FrancisFrancis A2541, FR380 manual Failure of Lamp to light, Failure of Remote Focus

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7- Fault Finding

All fault finding must be conducted by a competent person or qualified Electrical Engineer.

Failure of Lamp to light

Causes:

1)Power not supplied;

2)Fuse blown;

3)Failed lamp

Remedy:

1)Check voltage at supply. If supply is not present the fault is at the customer supply. If power is present, see remedy 2;

2)Check fuse for visual failure. If none noticeable check fuse for continuity using a multi-meter. If fuse found to be faulty, replace with new part and test equipment again for correct working order. If found to be working correctly see remedy 3;

3)Firstly, check supply at lampholder connecting block (within searchlight barrel). If supply is present, disconnect unit from power supply before removing the lamp. If noticeable damage to filament is present, the lamp will have failed. The lamp can also be checked for continuity using a multi-meter. Replace lamp ensuring all precautions and instructions previously outlined in this manual are adhered to.

Failure of Remote Focus

Causes:

1)Power not supplied;

2)Faulty connections;

3)Failed motor/transformer

Remedy:

1)Check voltage at supply. If no supply present fault is at customer supply. If power is present see remedy 2;

2)Check all wiring connections on motor, transformer and terminal rail, in accordance with the wiring diagram. If found to be correct, see remedy 3;

3)Remove focus motor and apply 24v DC directly across terminals. If motor does not rotate the unit has failed. A new focus motor should be fitted to the lampholder assembly. If the motor is working correctly, check output of transformer (mounted in the Motor Gearbox).

NOTE: If a fault occurs on the pan and tilt gearbox, the unit should be returned to Francis Searchlights Limited for fault evaluation and repair.

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Contents User Instruction & Installation Manual Contents Introduction Safety Precautions Technical Information Preparing the Mounting Position Unpacking and Installation InstructionsSafety Precautions Method of Electrical Connection Back To Top Operating Instructions Testing When fitting the lampFailure of Remote Focus Failure of Lamp to lightMaintenance and Servicing Drawing Number Description Wiring Diagrams and General AssemblyPage Page Page Page Page Page Back To Top Part Number Description