Master JetAtmosphericFryers

The flame rides twoinches above the burnermanifold in an atmosphericfryer.

Types of Master Jet FryersTypes of Master Jet Fryers

ModelModel Oil CapacityOil Capacity BTUBTU Fries / HourFries / Hour ControlsControls

J1CJ1C 15 - 20 lbs. 45,000 30 lbs. Millivolt

MJ35MJ35 35 - 40 lbs. 110,000 65 lbs. Millivolt

MJ45 & 47MJ45 & 47 40 - 50 lbs. 122,000 80 lbs. 24 Volt

MJCFMJCF 70 - 80 lbs. 150,000 100 lbs. Millivolt

MJCFEMJCFE 70 - 80 lbs 150,000 100 lbs. 24 Volt

Master Jet FryerMaster Jet Fryer

Robertshaw & Honeywell Millivolt gas valvesRobertshaw & Honeywell Millivolt gas valves are powered by a thermopile and do not require an

external electrical source to operate.

Robertshaw Millivolt Gas Valve Honeywell Millivolt Valve

The pilot flame heatsthe thermopile, whichproduces sufficientcurrent to power thefryer’s gas valve.

A thermopile contains bits ofdissimilar metal, which, when heated,emit a tiny amount of electricity.

Alignment of the targets on the burneris critical to the fryer’s efficiency.

Frypot

¾ -inch(side)

1-inch(rear)

1

B urner m an ifo ld D eflector ta rge t

G asva lve

Target assem bly

S tandoff

Burner components

A structural standoff is providedon later MJ series fryers.

Orifices Pilot Assembly

Burner components

The pilot assembly provides ignition for the fryer and heats the thermopile.

The Fenwal thermostat, which extendsinto the frypot, is sensitive toone-degree changes.

Fenwal Thermostat

Millivolt CircuitMillivolt Circuit

Gas Valve

Operator Magnet

Pilot MagnetOperating T-Stat

High-Limit

Thermopile

Pilot

Gas Valve

Operator Magnet

Pilot Magnet

Operating T-Stat High-Limit

Thermopile

Pilot

Line Voltage

ON / OFF Switch

24 Volt Circuit for MJ-45 & MJCFE

24-Volt Circuit

Computer in 24-Volt CircuitP robe

H igh-L im it

M ain Valve M agnet

P ilo t M agnet

Therm opile

P ilo t

G as V a lve

24V A C T ransform er

L ine V o ltage

In terface B oardH eat R elay

12V A CTransform er

C om puter

Computer Interface BoardComputer Interface Board

1

3

2

96

131074

1512

5 8 11 14

24 VAC

COMP

1

2

3

AC

AC

COM

HOT

COM

HOTK1K2K1SOUND

J2

GV AL 24V COMP

Interface Board

Probe Circuit

J1

Gas Valve22-28 VAC

Transformer 24 volts (22-28)

Transformer12 volts(12-18)

Interface Board

Computer Basket L ift T imer Analog Contro lle r D ig ita l Contro ller

SoundD evice

Optional pressure switchNormally open

Safety drain optionSee inset

G as valvePilo t generator

O perationa l co il

120VAC

120VAC

Probe

G as valvere lay

H TO

FIL

TER

H TO

NEX

T FR

YER

NH

1

2

3

4

5

6

7

8

1 C2 C

2 1 C 2 2 C

9

10

11

12

17

18

20

19

13

14

16

15

4 C

7 C

6 C

5 C

Probe circuit

Line voltage

12 VDC

24 VAC

12 VAC

Sound Device or 24 VDC

3 C

7

8 C

1 232895

9 C

1 0 C

1 1 C1 3 C

1 8 C

1 9 C

1 6 C

2 4 V A C 1 2 V A C

2 4 V A C

1 2 V A C

6141 11 0

1 1

1 1

9

9

7

7

5

5 4

4 1 0

1 0

2

2

1 4

1 4

1 3

1 3

1

1

3

3

Safety drain option

20C36C

12C17C

N OC

N C

9

10

12

11

17

18

20

19

13

14

16

15

D 2

D 1

D 3

D 4

C

MasterJet “45” Series Wiring Diagram