Genset

General

If your engine does not start?

Question 1. Does the engine crank over when the start key is turned?

• If not check the battery voltage and check wiring connections to ignition switch and starter motor
• Ensure ‘open door’ switches and or emergency stop buttons have been activated
• Check oil level in engine and attempt to turn over engine by hand

Question 2. If the engine cranks over

• Check fuel supply to filters and pumps
• Bleed or change filters if required
• Check voltage supply to electric pump solenoids
• Repair or replace as necessary

Question 3. Engine runs but shutsdown

• Ensure fuel system is in good working order
• Are any warning lamps illuminated while engine running
• Test shut down sensors by isolating, then run the engine

Generators

Question 1. No output

• Is the engine running smoothly and at maximum speed
• Service or repair the engine as required
• Use a hand held multi meter to test for voltage near the input side of the main breaker switch
• If there is a difference in voltage between input and output connections of the breaker switch, replace the switch
• If there is no voltage measured at breaker, isolate wiring at main alternator connection and check for out put at alternator terminals
• If there is no voltage recorded – re excitation test to be carried out
• If no voltage is measured after these tests replacement or repair of main alternator is required

Welders

Question 1. No output

• Is the engine running
• Service or repair
• Test for voltage at incoming side of main breaker
• Is there a voltage difference
• If there is no voltage present – dis-connect and isolate main supply cables to rectify bridge (No11) and disconnect main welding panel (Large P.C.B)
• Run engine and check for voltage at auxillary sockets
• If auxillary power has returned re connect welding panel and re- test, then re connect rectify supply cables and re test. Replace faulty component
• If no out put is recorded, re excite alternator at capacitor connections
• If no out put is measured replacement is required

Question 2. Poor control over welding amperage

• Check security of wiring to control units, i.e potention meter, welding panel (refer to wiring diagram if necessary)
• Test voltage at auxillary sockets
• Full voltage from generator must be available for welding circuit to work
• Measure open circuit D.C volts (engine at full speedd) 70 volts required
• If voltage low, check engine max speed
• Check capacitors for effeciency
• If low voltage recorded
• Check operation of voltage transformer supplying current to welding panel (19v supply to panel required)
• If voltage supply is good, either welding panel replacement or rectifier bridge replacement is required.

If none of the above solve the problem please contact the service department for further assistance on 01639 777021 or email service@genset.co.uk