Alarms In NOKIA FLEXI BTS

BY : Preetam Kumar Jangid

1.) 7401 Alarm

Syntex Mains FailureType N/CSeverity MajorColour Green & Green/WhitePin 7, 25Root

PIU DDF BTS

Root cause Alarm occurs when there is no AC power supply on siteCause 1. AC gets failure due to regular AC cut.

2. AC gets failure due to any s/c.3. AC gets failure due to any o/c.

Verification To check the alarm Switch off the mains MCB from PIU. To remove alarm turn on the mains mcb.

2.) 7402 Alarm

Syntex Rectifier FailType N/OSeverity MinorColour Blue & Blue /WhitePin 8, 26Root

Alarm panel Of P.P. DDF BTS

Root cause Alarm occurs when any one of the SMPS gets failure.Cause 1. Any SMPS gets failure.

2. Due to failure of MCB.3. Due to any s/c.

Verification To check the alarm firstly remove the rectifier from the SMPS or switch off the MCB of rectifier from SMPS. To remove alarm switch on the.MCB of the

rectifier moduleor insert the new rectifier module.

3.) 7403 Alarm

Syntex Low Battery VoltageType N/OSeverity CriticleColour Violet & Violet /WhitePin 9, 27Root

Alarm panel Of P.P. DDF BTS

Root cause Alarm occurs when Battery voltage reaches 46V/47V.Cause 1. When AC gets failure and D.G. is not working & site

on battery from last 3-4 hrs.2. When Battery is not fully charged and load on

battery.Verification To check the alarm set the o/p load vtg of battery

less then 48V & switch off the MCB & D.G.. To remove alarm switch on the.MCB (mains) or

switch on the D.G. if AC is not available.

4.) 7404 Alarm

Syntex Site On Battery

Type N/OSeverity MajorColour Gray & Gray /WhitePin 10, 28Root

Alarm panel Of P.P. DDF BTS

Root cause Alarm occurs when all SMPS & Rectifiers gets failure.Cause 1. When AC gets failure and D.G. does not start.

2. AC gets fail DG is off.3. DG is not working properly.4. AC gets failure & DG is not available at site.5. All SMPS & rectifires gets failure.

Verification To check the alarm switch off the mains MCB from PIU & switch off DG also. To remove alarm switch on the mains MCB or DG

(if mains is not available).

5.) 7405 Alarm

Syntex Site On DGType N/OSeverity MinorColour Pink & Pink /WhitePin 11, 29Root

PIU DDF BTS

Root cause Alarm occurs when load of site on DG.Cause 1. When AC gets failure due to cutting time.

2. AC gets fail due to s/c.3. MCB gets failure.

Verification To check the alarm switch off the mains MCB from

PIU & switch on the DG (if it is not in auto mode). To remove alarm switch on the mains MCB (if

mains is available).

6.) 7406 Alarm

Syntex DG LLOPType N/OSeverity CriticleColour Light Green & Black /GreenPin 12, 30Root

LLOP Sensor PIU DDF BTS

Root cause Alarm occurs when lube oil pressure gets below then specified level.

Cause 1. Due to leakage of lubricant.2. Due to overflow of lubricant.3. Due to no service on time.4. Due to no oil change on the time.

Verification To check the alarm switch off the mains MCB from PIU & switch off the DG also. To remove alarm maintain the lubricant oil

pressure till specified level.

7.) 7407 Alarm

Syntex Low Fuel LevelType N/OSeverity MinorColour Light Blue & Black /BluePin 13, 31

Root Fuel Sensor PIU DDF BTS

Root cause Alarm occurs when fuel level goes below then 40% of the capacity.

Cause 1. When site on DG from long time.2. When fuel tank is not fully filled.3. Tank have leakage.

Verification To check the alarm see if the desired fuel level of DG is set on 40% or not. To remove alarm fill the tank of DG.

8.) 7408 Alarm

Syntex DG Fails To StartType N/OSeverity MajorColour White & Black /WhitePin 13, 31Root

PIU DDF BTS

Root cause Alarm occurs when PIU is not able to start DG in 3 attempts.

Cause 1. Due to problem in self.2. Self battery is not charge.3. No fuel in DG.4. No connection b/w PIU & Self.

Verification To check the alarm switch off the mains mcb from PIU and check dg set is not in auto mode or remove the connection b/w PIU and Self. To remove alarm start DG in manual mode.

9.) 7409 Alarm

Syntex AC FailureType N/OSeverity MajorColour Light Gray & Black /light grayPin 15, 33Root

µC DDF BTS

Root cause Alarm occurs when both AC gets failure.Cause 1. Due to problem in µC.

2. Site on battery.3. Level of gas in AC goes below then the

specified level.4. Switching problem.

Verification To check the alarm switch off the AC’s. To remove alarm switch on/repair/replace AC’s.

10.) 7410 Alarm

Syntex Door OpenType N/CSeverity Minor/Major/Criticle (Accd. to condition)Colour Red/ Black & Red/BluePin 16, 34Root

Door Sensor PIU DDF BTS

Root cause Alarm occurs when Door is open.Cause 1. Unauthorisd person is in the shelter.

2. Work on progress inside the shelter.3. Someone (may be technician, engineer or guard)

forget to close the door.4. Sealing of door is not proper.

5. Lock of door is not correct.Verification To check the alarm open the door.

To remove alarm close and seal proper the door.

11.) 7411 Alarm

Syntex High Room Temp.Type N/OSeverity MajorColour Orange/Red & orange/Light grayPin 16, 34Root

Temp.Sensor µc of AC DDF BTS

Root cause Alarm occurs when Temp reaches 35° c.Cause 1. AC is not working.

2. Door of shelter is open.3. Site on battery.

Verification To check the alarm rub thermister in b/w hands . To remove alarm switch on the AC & set AC temp

on desired value.

12.) 7412 Alarm

Syntex Fire & Smoke.Type N/OSeverity CriticleColour Orange/Black & Orange/GreenPin 18, 36Root

F& S sensor PIU DDF BTS

Root cause Alarm occurs when Fire & Smoke at site.Cause 1. Fire & Smoke at site.

2. Due to any inflammable object at site.Verification To check the alarm create a small fire by paper or

jute. To remove alarm Reset smoke & fire sensor and

clean the smoke from the sensor.