dc30 040 qw 400, qw 420, qw 420 d, qw 420 s service manual r

Models QW-420, QW-420-S,and QW-420-D

Vertical Wall Stand/Frame

Service Manual

™

Manual Part No. DC30-040 Revision C

Vertical Wall FrameModel QW-400

This manual is copyrighted and all rights are reserved. No portion of this document may be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable form without prior consent in writing from Quantum Medical Imaging, LLC. (QMI)

Copyright© 2007 QMI

Made in U.S.A.Quantum Medical Imaging, LLC2002-B Orville Drive NorthRonkonkoma, New York 11779 USAPhone: (631) 567-5800Fax: (631) 567-5074E-mail: [email protected]

Revision History

Wall Stand/Frame - Service Manual Revision CQuantum Medical Imaging, LLC i

REVISION DATE TYPE OF MODIFICATION

A 5/24/04 Initial Release

B 10/5/04 Incorporated ECO# 1664, updated to new address

C 6/22/07 Incorporated ECO# 1761, 1788, 1824

PageNumber Rev

PageNumber Rev

PageNumber Rev

i - iv C

1-1 thru 1-12 C

2-1 thru 2-14 C

3-1 thru 3-4 C

4-1 thru 4-16 C

5-1 thru 5-4 C

Revision History

Revision C Wall Stand/Frame - Service Manualii Quantum Medical Imaging, LLC

THIS PAGE INTENTIONALLY LEFT BLANK

Table of Contents

Wall Stand/Frame - Service Manual Revision CQuantum Medical Imaging, LLC iii

Chapter 1 Specifications

PHYSICAL SPECIFICATIONS ................................................................................. 1-3ELECTRICAL SPECIFICATIONS .............................................................................. 1-4SYSTEM OPTIONS ............................................................................................... 1-4SYSTEM OPERATING ENVIRONMENT .................................................................... 1-5NON-OPERATING ENVIRONMENT ......................................................................... 1-5

Chapter 2 Assembly & Installation

OVERVIEW .......................................................................................................... 2-3UNPACKING ........................................................................................................ 2-3REQUIRED TOOLS ............................................................................................... 2-3ASSEMBLY/INSTALLATION INSTRUCTIONS ........................................................... 2-3

MODELS QW-420, QW-420-D, QW-420-S ASSEMBLY/INSTALLATION ................... 2-3

MODEL QW-400 ASSEMBLY/INSTALLATION ....................................................... 2-9

POST INSTALLATION CHECK ........................................................................... 2-13

Chapter 3 Theory of OperationOVERVIEW .......................................................................................................... 3-3

MECHANICAL OPERATION - MODELS QW-420, QW-420-D, QW-420-S ................. 3-3

MECHANICAL OPERATION - MODEL QW-400 ..................................................... 3-3

ELECTRICAL OPERATION - MODELS QW-420, QW-420-D, QW-420-S ................... 3-3

ELECTRICAL OPERATION - MODEL QW-400 ....................................................... 3-3

Chapter 4 Service InstructionsOVERVIEW .......................................................................................................... 4-3

SERVICE MAINTENANCE ................................................................................... 4-3

Cleaning .................................................................................................... 4-3

Visual Inspection ....................................................................................... 4-3

REMOVAL/REPLACEMENT PROCEDURES ............................................................ 4-4

Replacing the Vertical Pulley Assembly (Models QW-420, QW-420-D,QW-420-S Only) ........................................................................................ 4-4

Cassette Tray Removal Procedure ............................................................... 4-8

REPLACEMENT PARTS AND ORDERING INFORMATION .......................................... 4-8

Chapter 5 Diagrams

FIGURE 5-1. MODELS QW-420, QW-420-D, QW-420-S VERTICAL WALLSTAND/FRAME WIRING DIAGRAM ..................................................................... 5-3

FIGURE 5-2. MODEL QW-400 VERTICAL WALL FRAME WIRING DIAGRAM ........... 5-4

Table of Contents

Revision C Wall Stand/Frame - Service Manualiv Quantum Medical Imaging, LLC


Chapter

1-1

SPECIFICATIONS

1


Wall Stand/Frame - Service Manual Revision CQuantum Medical Imaging, LLC 1-3

PHYSICAL SPECIFICATIONS

The following are physical specifications of the Vertical Wall Stand/Frame (see Figures 1-1 through 1-6):

ModelQW-400

ModelQW-420

ModelQW-420-D

ModelQW-420-S

Height: 85.0 inches (2159 mm)

84.0 inches (2134 mm)

84.0 inches(2134 mm)

84.0 inches (2134 mm)

Width: 26.5 inches(673 mm)

27.5 inches (699 mm)


37.25 inches (947 mm)

Distance from Wall to Front of Receptor:


12.75 inches (324 mm)


8.0 inches(203 mm)

Distance from Front of Column to Front of Receptor:

N/A 4.5 inches(114 mm)*

4.5 inches(114 mm)*

8.0 inches(203 mm)

Receptor Front Cover Material:

Fiber Resin (phenolic)

Fiber Resin (phenolic)

N/A Fiber Resin (phenolic)

Front Cover Density: <1 mmAl <1 mmAl N/A <1 mmAl

Receptor Types: 14" x 17" grid or bucky,14" x 36" grid or bucky

14" x 17" grid or bucky,14" x 36" grid or bucky

CanonCXDI-40G, CMT SmartRad, IDC XplorerTM 1500

14" x 17" grid or bucky

Focal Spot-to-Floor Distance (with 14" x 17" receptor):

25.0 inches (635 mm) with fixed grid26.75 inches (679 mm) with bucky

13.75 inches (349 mm)

Receptor- dependent

13.75 inches (349 mm)

Focal Spot-to-Floor Distance (with 14" x 36" receptor):



N/A N/A


Revision C Wall Stand/Frame - Service Manual1-4 Quantum Medical Imaging, LLC

*Note: Up to 8.0 inches (196 mm) from front of column to front of receptor with optional extension QW-EX8

ELECTRICAL SPECIFICATIONSMode of Operation: Continuous

Locking System Type: Electromagnetic, Fail-Safe

Locking System Power: 24 VDC/1.0A

Power Supply Type: Double Insulated (or reinforced); must meet con-struction/performance criteria set forth in UL 2601-1

Note: Systems equipped with a bucky require separate 120/220-240 VAC power supply.

SYSTEM OPTIONSQW-HG20: Patient “Side-Mounted” Handgrips (Used on Model

QW-420 only)

QW-HG30: Patient “Overhead” Handgrip (Used on Models QW-420 and QW-420-S only)

Collimator Compatability:

Manual, Selectable, Automatic




Weight: Approx. 100 lbs (45.4 kg)

Approx. 225 lbs (98.0 kg)



Image Receptor Travel (14" x 17" cabinet)


60.5 inches (1537 mm)

Receptor- dependent


Image Receptor Travel (14" x 36" cabinet)



N/A N/A

ModelQW-400

ModelQW-420

ModelQW-420-D

ModelQW-420-S



QW-EX8: 8 inch Bucky Extension Bracket (Used on Models QW-420 and QW-420-D only)

QW-AT: Auto-Tracking Kit for synchronization with of Wall Stand with Siemens Motorized Tubestand

SYSTEM OPERATING ENVIRONMENTAmbient Temperature: +10°C to +40°C

Relative Humidity: 30 to 75%, non-condensing

Atmospheric Pressure: 700 hPa to 1060 hPa

NON-OPERATING ENVIRONMENTAmbient Temperature: -18°C to +70°C

Relative Humidity: 20 to 95%, non-condensing

Atmospheric Pressure: 500 hPa to 1060 hPa



Figure 1-1. Model QW-420 (with 14" x 17" Receptor) Dimensional Diagram



Figure 1-2. Model QW-420 (with 14" x 36" Receptor) Dimensional Diagram



Figure 1-3. Model QW-420-S Dimensional Diagram(Parallel Wall Mount Configuration)

13.75 MIN[349]

83.00[2108]

Ver

ti-Q

Verti-Q

34"[864]

3 1/4"[83]

23.50[597]

Ver

ti-Q

Verti-Q

1 "[46]

13/16

8"[203

1" [25]MIN.

CLEARANCE

74.25 MAX

[1886]

plan

efil

m

WA

LL

1"

WA

LL

1"

4"

1/2"

1/2"

DC80-019-1 REV. C

NOTES:



Figure 1-4. Model QW-420-S Dimensional Diagram(Perpendicular Wall Mount Configuration)

13.75 MIN[349]

.312 [8] DIA MOUNTING HOLES

3/4" [19] REF

1.00[25.4]

83.00[2108]

3/4" [19]REF

2"[51

4"[102

84.00[2134]REF

Ver

ti-Q

Verti-Q

34"[864

3 1/4"[83]

23.50[597]

Ver

ti-Q

Verti-Q

1 "[46]

13/16

8"[203]

WA

LL74.25 MAX

[1886]

plan

efil

m

DC80-019 REV. D

NOTES:



Figure 1-5. Model QW-400 Dimensional Diagram

18.25[464]

DETAIL A

MOUNTING STRAP

Ø.38 X .75 SLOT HOLE2X

39.88[1013]

[2362]

QW-400

FOCALSPOT

WALL FRAME[498]

7'-9" MIN

SEE NOTE 1 C

19.63

26.63[676]

SEE NOTE 1

34.94[887]

8'-9" MAX[2667]

Chi

ro -

X Chiro - X

76 [1929]

A

A A

LEG 2X

Ø.31 MOUNTING HOLE

2X SECTION A-A



Figure 1-6. Model QW-420-D Dimensional Diagram

Chapter

2-1

ASSEMBLY &INSTALLATION

2



OVERVIEW

This chapter describes the steps required to assemble, install and align the Vertical Wall Stand/Frame and how to install the completed assembly in your facility, including making all required electrical connections.

UNPACKING

The Vertical Wall Stand/Frame is shipped in separate pieces as follows:

• Vertical Wall Stand/Frame Assembly

• Associated system components, depending on the model and options - a Base Cover, Top Cap, trim weights, cable covering (with bucky and/or Ion Chamber equipped systems only), cassette tray, power input cable, hardware bag (including coil cord tie-down clamp and ground stud), patient handgrips (optional), and Operator and Service Manuals.

Open the crate or carton marked "packing list enclosed" first. Locate and remove the packing list. Do not dispose of packing material until packing list is matched with actual parts received. If any damaged parts are found, notify the shipping or freight company immediately (the manufacturer is relieved of any responsibility for damage during shipment after unit is picked up by the carrier). Should there be a shortage of parts, notify Quantum Medical Imaging’s Service Department.

REQUIRED TOOLS

The following tools and materials are required to complete the assembly and installa-tion procedures:

• Socket Wrench Set

• Assorted Phillips and slot blade screwdrivers

• Drill (and masonry bit if concrete construction)

• Bubble level

ASSEMBLY/INSTALLATION INSTRUCTIONS

The following paragraphs describe how to assemble the Verical Wall stand/Frame. Assembly instructions for Model QW-400 are described separately because of the dif-ferences in this device’s design and construction. Assembly instructions for Models QW-420, QW-420-D and QW-420-S are very similar in design and construction and are therefore combined into one set of instructions with model differences noted where necessary.

MODELS QW-420, QW-420-D, QW-420-S ASSEMBLY/INSTALLATION

To assemble the Model QW-420, QW-420-D or QW-420-S Vertical Wall Stand, refer to Figures 2-1 through 2-6 and proceed as follows:

1. Rest the bottom end of the Vertical Column on soft support material.

NOTE

Examine all car-tons and crates carefully at time of delivery. If damage is appar-ent, have deliv-ery driver write a "Damaged Ship-ment Note" on copies of freight bill, sign it, and file appropriate carrier claim. Should you dis-cover concealed damage, immedi-ately notify the transporting agent and ask for an "Inspection of Damage". Carrier will not accept concealed dam-age claim if filed after 15 days from date of receipt of mer-chandise.



2. Remove shipping bolt located in Flat Base Mounting Plate (see Figure 2-1).

Figure 2-1. Removing the Shipping Bolt

3. On Model QW-420-D only: Refer to the Digital Image Receptor Mounting Instruction Sheet for specific information for the receptor type (DC30-067 - CMT SmartRad, DC30-068 - Canon CXDI-40G, or DC30-069 - IDC Xplorer).

4. Carefully raise the Vertical Column to an upright position. The Receptor Cab-inet will rise up the column because of the pull of the counterweight.

5. Connect red and black wires from Quantum generator (Interface Board) or from a double (or reinforced) insulated 24 VDC power source (must meet construction/performance criteria per UL 2601-1) to Terminal Board TB1 ter-minals 1 and 2, respectively (see Models QW-420, QW-420-D, QW-420-S Electrical Wiring Diagram in Chapter 5, DIAGRAMS). Use cable ties, as required, to manage cable.

6. Install ground stud (supplied with system) into threaded hole on back side of Vertical Column. Connect #10AWG yellow/green ground wire between Verti-cal Wall Stand/Frame’s ground stud (located on back side of Vertical Column near base) and x-ray generator.

7. On systems equipped with a moving grid (bucky), connect bucky power cable to terminal block on bucky (refer to bucky manufacturer’s documentation, provided with system, for specific wiring instructions) and tie-wrap cable to inside of Receptor Cabinet along the bottom surface. Route cable through opening in rear side of Receptor Cabinet.

8. If Patient “Overhead” Handgrip option (QW-HG30) is supplied, install as fol-lows:

a. Loosen the small black thumbscrew located on the Patient Handle Mount Bracket until threads are no longer visible in mounting hole for Patient Handgrip.



b. While pulling the Index Plunger out, insert the Patient Handgrip into mounting hole in Patient Handle Mount Bracket and then release plunger (see Figure 2-2).

c. Tighten the small black thumbscrew located on the Patient Handle Mount Bracket.

Figure 2-2. QW-HG30 Patient "Overhead" Handgrip Mounting

9. If Patient “Side-Mounted” Handgrips option (QW-HG20) is supplied, mount each Side Handgrip to Receptor Cabinet using six (6) 10-32 x 1/2” pan head phillips screws and star washers.

Note: If Patient “Overhead” Handgrip option(QW-HG30) is also installed, add a Spacer (partnumber ME11-122, provided with handgrips)between the lower end of Side Handgrip thatattaches to the Overhead Patient Handle MountBracket. Secure handgrip on this side using six(6) 10-32 x 5/16” pan head phillips screws (seeFigure 2-3).

INDEX PLUNGER

THUMBSCREW

PATIENTHANDGRIP



Figure 2-3. QW-HG20 Patient "Side-Mounted" Handgrips Installation

10. Turn on the collimator light.

11. Align the collimator cross hair lines with the centerline on grid, cassette tray or digital receptor.

12. On Models QW-420 and QW-420-S only: Insert a 10 x 12 film cassette into tray in Receptor Cabinet.

13. Verify the counterweight is balanced properly so it provides a smooth up and down motion of the Receptor Cabinet. If additional counterweight is neces-sary, add trim weights as follows:

a. Bring the Receptor Cabinet down to minimum vertical travel position.

b. Remove two screws securing the Column Center Cover to top of the column (see Figure 2-4) and carefully tilt the center cover outward enough to gain access to Access Opening (see Figure 2-10).

SIDE MOUNTED HANDGRIP

SPACERREQUIRED

HERE IFOVERHEADHANDGRIP

ALSOINSTALLED



Figure 2-4. Column Center Cover Top Mounting Screws

Figure 2-5. Trim Weight Access Opening Location

COLUMN CENTER COVER

COLUMNCENTERCOVER

SCREWS(2X)



c. Adjust the vertical position of the Receptor Cabinet so the top of the counterweight is visible through the Access Opening.

d. Place trim weights (each weighs approximately 1.5 lbs.) inside com-partment on top of counterweight (see Figure 2-5) until proper bal-ance (motion) is achieved.

e. Re-install Column Center Cover mounting screws.

f. Re-check counterbalancing and adjust if necessary.

14. Secure the Vertical Column to the floor through the Flat Base Mounting Plate using appropriate hardware (must be capable of supporting 100 lbs. pull-load).

15. Secure the Vertical Column to the wall using the Wall-Mounting Bracket (and optional Wall-Mounting Bar) with appropriate hardware (must be capable of supporting 60 lbs. pull load) See Figure 2-6.

Figure 2-6. Vertical Wall Mounting Bracket

16. On top of the Vertical Column, remove the two (2) phillips head screws from standoffs. Install the Column Top Cap over top of column and secure by re-installing the two (2) phillips head screws.

17. Move Receptor Cabinet through its entire vertical movement, making sure the light beam remains on the center line on grid, cassette tray or digital receptor.

18. On Models QW-420 and QW-420-S only: Insert a film cassette into cas-sette tray in Receptor Cabinet.

19. Take a projection into the cassette/receptor for verification of compliance. (Refer to the calibration section of the Collimator manual.)

PULLEY/BRAKE

ASSEMBLY

WALL MOUNTING BRACKET



20. If equipped, dress bucky and AEC cables using corrugated tubing and cable tie-wraps as appropriate.

21. Attach Base Cover to Flat Base Mounting Plate using two (2) 6-32 x 1/4” pan head screws.

22. On Models QW-420 and QW-420-S only: Attach Front Cover to Receptor Cabinet and align centerline using collimator light.

MODEL QW-400 ASSEMBLY/INSTALLATION

To assembleand install the Model QW-400 Vertical Wall Frame, refer to Figures2-7 through 2-& and proceed as follows:

1. Lift off the fiber-resin (phenolic) Front Cover from the Vertical Wall Frame.

2. Typically, the Receptor Cabinet is pre-installed into the Vertical Wall Frame at the factory. However, instructions for assembly and installation of the Recep-tor Cabinet are provided in steps 2a through 2k if needed for service or replacement purposes:

a. Place the Receptor Cabinet on a flat surface with front side facing up, top end away, and bottom end toward you.

b. Loosely install the two (2) Spring-Loaded Bearing Brackets on the top and bottom non-film loading side of the Receptor Cabinet using two (2) 1/4-20 x 3/4” screws on each bracket.

c. Loosely install Bearing Bracket (without spring), part number ME10-013, on the bottom film-loading side of the Receptor Cabinet using two (2) 1/4-20 x 3/4” screws.

d. Loosely install Bearing Bracket (without spring), part number ME20-014, and Control Handle Mounting Bracket (part number ME20-012) on the top film-loading side of Receptor Cabinet using two (2) 1/4-20 x 3/4” screws.

e. Install Receptor Cabinet by sliding it onto Bearing Rails in the Vertical Wall Frame.

f. The slotted mounting holes in the Bucky Bearing Brackets are pro-vided to adjust tension on bearings (wheels). When adjusted prop-erly, the wheels on all four brackets should rotate throughout the entire travel distance of the Receptor Cabinet.

g. Slide Receptor Cabinet all the way down to bottom of Vertical Wall Frame.

h. Lift the counterweight so that the Pulley Cables slip over the Pulleys.

i. Secure the Pulley Cables to two top Bucky Bearing Brackets on Receptor Cabinet using 1/4-20 x 1" hex head bolts and flat washers.

j. Slowly allow the counterweight to pull Receptor Cabinet to top of Ver-tical Wall Frame.



k. Check bumper stops making sure that the Receptor Cabinet does not contact Vertical Wall Frame.

Figure 2-7. Receptor Cabinet Installed in QW-400 Wall Frame

3. Install the Control Handle with bracket to right side Bucky Bearing Bracket (for right-hand film loading) or left side Bucky Bearing Bracket (for left-hand film loading).

4. Connect the black coil cable wires to Terminal Board TB1 terminals 2 and 3 as shown in Model QW-400 Electrical Wiring Diagram in Chapter 5, DIAGRAMS.

5. On systems configured for right-hand film loading, tie-wrap coil cord cable as shown in Figure 2-8.

6. On systems configured for left-hand film loading, tie-wrap coil cord cable as shown in Figure 2-9.

7. Re-attach the Front Cover on the Vertical Wall Frame.

8. Stand the Vertical Wall Frame against wall in proper position. Level Vertical Wall Frame front-to-back and left-to-right using bubble level (use shims to level left-to-right, as necessary).

9. Turn on collimator light.

10. Align the collimator cross-hair lines to the center line on the Front Cover of the Vertical Wall Frame. Adjust position of Vertical Wall Frame as required.

11. Drill holes in the floor using the holes in the Vertical Wall Frame’s floor mount-ing bracket as a guide.



Figure 2-8. Model QW-400 Coil Cord Cable Routing (Right Hand Load Systems)

Figure 2-9. Model QW-400 Coil Cord Cable Routing (Left Hand Load Systems)

COIL CORD TIE-WRAPPED TO FRAME

COIL CORD TIE-WRAPPED TO COUNTERWEIGHT CABLE

COIL CORD TIE-WRAPPED TO FRAME



12. Secure the Vertical Wall Frame to the floor through the Floor Mounting Brack-ets using the appropriate hardware for floor construction (must be capable of supporting 100 lbs. pull-load) as shown in Figure 2-10.

Figure 2-10. Vertical Wall Frame Floor Mounting Brackets

13. Remove Front Cover from the Vertical Wall Frame.

14. Secure the Vertical Wall Frame to the wall through mounting plate in rear of Vertical Wall Frame using appropriate hardware (must be capable of support-ing 60 lbs. pull-load).

Figure 2-11. Vertical Wall Frame Wall Mounting Bracket

MOUNTING BRACKET HOLES (2X)

MOUNTING BRACKET

HOLES (2X)



15. Connect red and black wires from Quantum generator (Interface Board) or from a double (or reinforced) insulated 24 VDC power source (must meet construction/performance criteria per UL 2601-1) to Terminal Board TB1 ter-minals 1 and 2, respectively (see Model QW-400 Electrical Wiring Diagram in Chapter 5, DIAGRAMS). Use cable ties, as required, to manage and secure cable.

16. Ground the Vertical Wall Frame by connecting ground wire from system ground to the ground stud located on the left leg (rear side) of the Vertical Wall Frame Assembly.

17. If using a moving grid (bucky), connect bucky power cable to terminal block on bucky (refer to bucky manufacturer’s documentation, provided with sys-tem, for specific wiring instructions). Use cable ties to secure bucky cable along top of Receptor Cabinet and to Control Handle Coil Cable (leave a ser-vice loop to enable full travel of Receptor Cabinet).

18. Remove grid. Insert cassette into tray in Receptor Cabinet.

19. Move Receptor Cabinet to top of Vertical Wall Frame. Make sure that the Fail-Safe Brake is de-energized by pressing the LOCK RELEASE button on the con-trol handle attached to the Receptor Cabinet.

20. Line up the image receptor with collimator light field.

21. Tighten Bucky Bearing Brackets slightly.

22. Move Receptor Cabinet to the bottom of the Vertical Wall Frame.

23. Re-check alignment of the image receptor with the collimator light field.

24. Ensure that control handle coil cord remains in Vertical Wall Frame groove. Check for smoothness of Receptor Cabinet motion throughout range of travel. Adjust Bucky Bearing Brackets if necessary.

25. Fully tighten the Bucky Bearing Brackets.

26. Install grid.

27. Take projection into cassette for verification of compliance. (Refer to Collima-tor Manual for alignment procedures).

28. Re-attach Front Cover to Vertical Wall Frame Assembly.

POST INSTALLATION CHECK

All mounting procedures must be approved before, and checked after, installation by the hospital or facility engineering department and a registered, professional, structural engineer. It is recommended that a leakage current measurement be taken following installation to verify system meets allowable levels.

Chapter

3-1

THEORYOF OPERATION

3

Chapter 3 Theory of Operation


OVERVIEW

Models QW-400, QW-420, QW-420-D and QW-420-S feature sufficient vertical travel to accommodate all upright exams, and fail-safe electromagnetic locks for secure image receptor positioning.

MECHANICAL OPERATION - MODELS QW-420, QW-420-D, QW-420-S

Smooth vertical (upward and downward) image receptor movement is achieved by attachment of the receptor to a Vertical Trolley, which rides on eight spring-loaded radial ball bearings along with four metal shielded guide bearings bolted to it.

MECHANICAL OPERATION - MODEL QW-400

Smooth vertical (upward and downward) image receptor movement is achieved by attachment of the receptor to a set of fourspring-loaded Receptor Bearing Guides.

ELECTRICAL OPERATION - MODELS QW-420, QW-420-D, QW-420-S

See Figure 5-1 in Chapter 5, DIAGRAMS.

Two fail-safe brakes (24 VDC electromagnets) are located at the top of the vertical column (part of the Vertical Pulley/Brake Assembly). When the electromagnets are de-activated (i.e., the Receptor Cabinet Lock Release Button is not pressed), the fail-safe brakes "grab" the counterweight cable pulleys securely, locking the vertical motion of the receptor cabinet. Pressing the Receptor Cabinet Lock Release Button energizes the 24 VDC electromagnets, releasing the fail-safe brakes and allowing the counterweight cable pulleys to spin freely thereby enabling vertical motion of the receptor cabinet.

ELECTRICAL OPERATION - MODEL QW-400

See Figure 5-2 in Chapter 5, DIAGRAMS.

A fail-safe brake (24 VDC electromagnets) is located at the top right corner of the ver-tical frame. When the electromagnet is de-activated (i.e., the Receptor Cabinet Lock Release Button is not pressed), the fail-safe brake "grabs" the counterweight cable pulley securely, locking the vertical motion of the receptor cabinet. Pressing the Receptor Cabinet Lock Release Button energizes the 24 VDC electromagnet, releasing the fail-safe brake and allowing the counterweight cable pulley to spin freely thereby enabling vertical motion of the receptor cabinet.

Chapter 3 Theory of Operation



Chapter

SERVICEINSTRUCTIONS

4

4-1

Chapter 4 Service Instructions


OVERVIEW

This chapter provides instructions to assist the service technician in maintaining the smooth operation of the Vertical Wall Stand/Frame. The Vertical Wall Stand/Frame will function reliably when maintained according to the instructions provided in this chapter. Only properly trained service personnel should service or maintain this equipment. Safe equipment performance requires the attention of service personnel who are specifically trained and experienced with medical x-ray apparatus. Applicable preventive maintenance or any repair service should be performed by these skilled individuals. Failure to follow manufacturer’s or service personnel’s recommendations may result in serious injury.

WARNING! Personnel engaged in maintenanceactivities should exercise normal caution and carewhile working with electromechanical equipment.Only properly trained service personnel shouldservice or maintain this equipment. Failure to fol-low manufacturer's or service personnel's recom-mendations may result in serious injury. Beforeremoving or opening any electrical power panelsor covers, verify that the incoming power supply isturned OFF. In the event maintenance proceduresrequire power to be supplied to the unit, extremecare MUST be exercised to insure the safety ofservice or other personnel in the area.

SERVICE MAINTENANCE

WARNING! Always disconnect the equipmentfrom the main power supply prior to any cleaning.Verify that the equipment is properly groundedbefore attempting any electrical operation. Neveruse abrasive polish on this equipment.

Cleaning

The Vertical Wall Stand/Frame’s Front Cover surface should be wiped clean. Painted metal surfaces should be cleaned using a clean cloth slightly moistened in warm soapy water (use mild soap). Wipe dry with a clean wet cloth.

Visual Inspection

A complete series of inspections and functional checks was conducted at installation to insure proper operation of the system. However, periodic routine inspection and maintenance of the Vertical Wall Stand/Frame should be performed by a qualified service technician. The following inspection and adjustment procedures are recommended to maintain the system in its original operating condition:



Perform Every Six Months

• Visually inspect for wear and cleanliness

• Check for evidence of loose hardware or loose wires

• Check all bearings and bearing surfaces for cleanliness and corrosion

• Clean Bearing Tracks

• Conduct a general inspection for worn or damaged parts

• Check for smoothness of Receptor Cabinet motion

• Verify that all ground conductors are properly and securely installed and free of corrosion or damage

• Check all electrical cabling and wiring for wear and fraying

• Check external covers for proper fit; inspect for scratches that may indicate cover misalignment or damage caused by collisions with footstools, trolleys, or other equipment

• Verify vertical electomagnetic lock holding force exceeds 35 lbs. (Models QW-420, QW-420-S, QW-420-D) or 18 lbs. (Model QW-400).

REMOVAL/REPLACEMENT PROCEDURES

The following procedures provide step-by-step instructions for removal and replacement of the repairable components in the Vertical Wall Stand/Frame.

Replacing the Vertical Pulley Assembly (Models QW-420, QW-420-D, QW-420-S Only)

1. Remove the Top Cap and Base Cover from the Vertical Column (see Figure 4-1).

Figure 4-1. Top Cap, Base Cover and Center Column Cover Locations

2. Remove the Column Center Cover from the Vertical Column (see Figure 4-1).

COLUMN CENTER COVER

COLUMN BASE COVER

TOP CAP

NOTE: MODELQW-420 IS SHOWNIN THIS DIAGRAM,MODELS QW-420-D

AND Q W-420-SHAVE IDENTICALPART LOCATIONS



3. Remove all trim weights from counterweight tray.

4. Move the receptor cabinet to upper most vertical position.

5. Turn off power to Vertical Wall Stand. Disconnect +24 VDC power cable from terminal block TB1 located on top of Vertical Column.

6. Disconnect ground wire from ground lug on back side of Vertical Column.

7. If wall stand is equipped with a bucky and/or ion chamber, free up bucky/ion chamber cable drape to allow enough slack for wall stand to be laid down on floor. If sufficient drape cannot be attained, disconnect bucky power and/or ion chamber cables from wall stand.

8. Remove all remaining wires from terminal block TB1.

Figure 4-2. Removing Vertical Pulley Assembly Mounting Screws

9. Remove four (4) ¼-20 x 3/4” hex head screws securing the Verti-cal Column Wall Mount Bracket to Vertical Column (see Figure4-2). Retain hardware for re-assembly.

10. Remove hardware securing the Vertical Column Base to floor.

TERMINALBLOCK TB1

TOP BRACKET MOUNTING SCREWS (4X)



CAUTION! The Vertical Column requires two per-sons to lift. Before lowering the column, prepare aresting location for laying the column on; laydown two pieces of 2” x 4” lumber about threefeet apart (cover lumber with soft cloth or cush-ioning material to prevent damage to column orscratching of painted surfaces).

11. Carefully, slide the Vertical Column forward until clear of Wall Mount Bracket, then slowly lower column until horizontal on floor.

12. Remove two (2) ¼-20 x 3/4” screws securing Vertical Pulley Assembly to Vertical Column (see Figure 4-3).

NOTE: Before disconnecting counterweightcables, tag the cable on the left side “LEFT” andthe cable on the right side “RIGHT” (as viewedfrom top). This will ensure correct position ofcables on replacement Vertical Pulley Assemblyduring re-installation.

Figure 4-3. Removing Vertical Pulley Assembly Mounting Screws



Figure 4-4. Tilting the Vertical Pulley Assembly to Access Counterweight Cables

13. Tilt the Vertical Pulley out from Vertical Column enough to gain access to counterweight cable mounting hardware (see Figure4-4).

14. Remove two (2) ¼-20 x 7/8” screws securing each counterweight cable to Trolley Assembly.

15. Remove the Vertical Pulley Assembly from column.

16. Position the replacement Vertical Pulley Assembly on the Vertical Column and tilt forward as shown in Figure 4-4.

17. Route the LEFT and RIGHT counterweight cables over the appro-priate ends of the Vertical Pulley Assembly. (Do not cross left and right cables!). Secure each cable to Trolley Assembly using two 1/4-20 x 7/8” screws. Ensure screws are tightened securely.

18. Insert the Vertical Pulley Assembly fully into Vertical Column and secure to column using two (2) ¼-20 x 3/4” screws.

CAUTION! The Vertical Column requires two per-sons to lift.

19. Carefully lift Vertical Column to vertical position and slide into the location on floor where it was originally installed.

20. Install four (4) ¼-20 x 3/4” hex head screws securing the Vertical Column Wall Mount Bracket to Vertical Column (see Figure 4-2).

21. Install hardware to secure the Vertical Column Base to floor.



22. Return all previously removed trim weights to counterweight tray.

23. Re-connect wiring to terminal block TB1.

24. Return-bucky and/or ion chamber cables to original draping posi-tions. If disconnected, re-connect the bucky and/or ion chamber cables to wall stand.

25. Connect ground wire to ground lug on back side of Vertical Column.

26. Re-connect +24 VDC power cable to terminal block TB1.

27. Install the Column Center Cover, Top Cap and Base Cover on the Vertical Column (see Figure 4-1).

28. Turn on power to Vertical Wall Stand. Verify proper receptor vertical motion and locking functionality.

Cassette Tray Removal Procedure

To remove the cassette tray from the receptor cabinet housing for cleaning or repair, proceed as follows:

1. Pull the cassette tray out by the handle until it stops.

2. Grasp both sides of the tray with your right hand placed near the vertical wall stand/frame and your left hand towards the tray front.

3. Locate the finger hole on the right side of the tray bottom. A spring-loaded plate covers this hole. Press the plate with your right index finger, lift the cassette tray up slightly and pull the tray away from the housing.

REPLACEMENT PARTS AND ORDERING INFORMATION

Table 4-1 below provides a list of replaceable parts for the Vertical Wall Stand/Frame. See Figures 4-5 through 4-11 for locations of replaceable parts. Use only original replacement parts, as supplied or recommended by Quantum Medical Imaging, LLC.

ORDERING INFORMATION

To order replacement parts for the Vertical Wall Stand/Frame, contact the Service Department at;

Quantum Medical Imaging, LLC.2002-B Orville Drive NorthRonkonkoma, New York 11779 USAPhone: (631) 567-5800 (x2)Fax: (631) 567-5074e-mail: [email protected]

When ordering replacement parts, supply the following information:

•Model and serial number of equipment

•Part number



•Part description

•Quantity required

•P.O. Number

•Shipping Instructions

When ordering components or parts not listed in Table 4-1, a complete description of the part, including its function and location should be provided with the model number and serial number of the unit.

Table 4-1. Replaceable Parts

Item Description Part Number

Model(s) Used On

Qty Used in System

1 Switch, Gray Push button EL50-002 QW-400QW-420QW-420-DQW-420-S

1111

2 Handle Assembly AY20-022 QW-400QW-420QW-420-D*QW-420-S

1111

3 R6ZZ Bearing ME40-018 QW-420QW-420-DQW-420-S

444

4 1628-ZZ Bearing ME40-017 QW-420QW-420-DQW-420-S

888

5 Vertical Pulley Assembly AY20-081 QW-420QW-420-DQW-420-S

111

6 Brake, Fail-Safe EL80-002 QW-400QW-420QW-420-DQW-420-S

1222

7 Trim Weight (not shown) ME10-105 QW-420QW-420-DQW-420-S

As Req’d



*Note: On QW-420-D systems interfaced with IDC Xplorer receptor, use Handle Assembly part number AY20-201.

8 24-Volt Power Cable (not shown)

EL75-005 QW-400QW-420QW-420-DQW-420-S

35 feet

9 Chin Rest ME30-002 QW-420QW-420-S

11

10 Front Panel (phenolic), 14" x 17"

ME31-002 QW-420QW-420-S

11

11 Cover, Cabinet, Top ME10-048 QW-420QW-420-S

11

12 Cover, Cabinet, Bottom ME10-047 QW-420QW-420-S

11

13 Cover, Cabinet, Non-Load Side

ME10-049 QW-420QW-420-S

11

14 Cover, Cabinet, Load Side, Left Load Bucky ORCover, Cabinet, Load Side, Left Load Grid Cabinet

ME10-051

ME10-194

QW-420QW-420-S

1

15 Cover, Cabinet, Load Side, Right Load Bucky ORCover, Cabinet, Load Side, Right Load Grid Cabinet

ME10-032

ME10-195

QW-420QW-420-S

1

16 Switch, Pushbutton, Auto-Track Enable

EL50-030 QW-420 with QW-AT Option

1

17 Potentiometer, 5K, 10 Turn, Precision

EL20-024 QW-420 with QW-AT Option

1

18 Front Panel (phenolic) ME31-004 QW-400 1

19 12" Control Handle Retract-able Coil Cord

EL75-001 QW-400 1

20 Receptor Bearing Guides ME30-008 QW-400 4

Item Description Part Number

Model(s) Used On

Qty Used in System



Figure 4-5. Replaceable Parts Location Diagram - All Models

Figure 4-6. Replaceable Parts Location Diagram -Models QW-420, QW-420-D, QW-420-S

1

2

3

4 4



Figure 4-7. Replaceable Parts Location Diagram -Models QW-420, QW-420-D, QW-420-S

Figure 4-8. Replaceable Parts Location Diagram -Models QW-420, QW-420-S

5

6

9



Figure 4-9. Replaceable Parts Location Diagram -Models QW-420, QW-420-S

Figure 4-10. Replaceable Parts Location Diagram -Model QTW-420 (with QW-AT Option)

11

12

1314 15

LEFT SIDE LOAD RIGHT SIDE LOAD

10 10

16



Figure 4-11. Replaceable Parts Location Diagram -Model QTW-420 (with QW-AT Option)

Figure 4-12. Replaceable Parts Location Diagram - Model QW-400

17

18 2



Figure 4-13. Replaceable Parts Location Diagram - Model QW-400

20

6

19

Chapter

5-1

DIAGRAMS

5

Chapter 5 Diagrams


Figure 5-1. Models QW-420, QW-420-D, QW-420-S Vertical Wall Stand/Frame WiringDiagram

SW1

JR2

D1

D2

24 VDC FAIL SAFE VERTICAL BRAKES

65

4

32

1

-1

-2

HAND SWITCH

BUCKY WALL STAND

RED

GREEN/YELLOW TO X-RAY GENERATOR MAIN GROUND STUD

X-RAY GENERATOR

GROUND STUDCOM N/O

24 VDC

A9 INTERFACE BOARD

APTB2

RED

RED

BLAC

K

BLA

CK

BLACK

BLACK

BLACK

RED

24 RTN BLACK

1N40051N4005

BLAC

K

RED

BLACK

SC50-006T REV. C

Chapter 5 Diagrams


Figure 5-2. QW-400 Vertical Wall FrameWiring Diagram

dc30 040 qw 400, qw 420, qw 420 d, qw 420 s service manual r

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