Harrington Generators International
29
498-1084 HRD060D Diesel Generator
Maintenance
Check Operation of MCBs
No maintenance can be carried out on MCBs other
than a physical check to ensure the MCB latches in
the On position and no sign of external damage can
be seen.
Adjust Valve Clearance
Valve Clearances should be checked after the rst 6
months or 600hrs. The clearance for both the intake
and exhaust valves should be 0.15mm when the en-
gine is cold. Ret the rocker cover with a new gasket.
Alternator
Ensure that the cooling air vents do not become
blocked by dirt, debris etc. and that the cooling fan is
not damaged.
Control Module Safety Shut Down
This module will prevent the generator from starting or
shut it down if faults occur. Check the following:-
Hours Run Counter; conrm counter is working.
Low Oil Pressure; with the engine off, remove the
connection to the normally closed oil pressure switch
and attempt to start the engine. The Control Module
should see an open circuit representing oil pressure
when there should be none and prevent starting.
With the engine running short the oil pressure switch
to the generator chassis to simulate loss of oil pres-
sure and the module should shut down the engine and
show an alarm.
Low Fuel Level; with the engine off disconnect the
3 way plug and socket to the optical fuel level sensor
and attempt to start the engine. It should recognise no
fuel present and prevent starting and show an alarm.
Reconnect the sensor and start the engine normally
and disconnect the sensor to simulate
low fuel level. The module can be set by a small
switch on the back to sound an alarm AND shut
down on low fuel or just sound an alarm
(preferred for welders and similar). The Control
Module should sound the alarm and stop the
engine depending on how the switch is set.
Battery Charger
Stop and start the engine a few times if needed to
draw off the battery.
Start the engine and allow running for 5 minutes, then
checking that the battery charger is delivering at least
13.2V DC into the battery.
Starter Motor
These are normally sealed for life but should be
inspected and serviced in accordance with the engine
manufacturers instructions.
Exhaust System
Inspect the exhaust system and silencer at the exible
sections and joints in particular.
Check the exhaust is adequately supported and
secured. Check for leaks and signs of burning of the
insulation. Replace insulation if necessary.
If the engine has run on low load for a considerable
period the exhaust may be sooted up. Run the engine
on low load for 10 minutes and gradually increase to
full load for 30 minutes to blow and burn any soot out
of the exhaust. Care should be taken that hot soot
does not land on combustible material.
Canopy and Trolley
Check security of xings and fasteners on the
machine. Lubricate hinges and latches with light
machine oil.
Ensure that the inlet and outlet louvres are kept clean
and unimpeded at all times. Check that no sound
insulation has become loose and obstructed them.
Grease wheel axles and check tyre pressure if
pneumatic tyres are tted (40PSI / 2.7 bar).
With the lower air outlet box removed to reveal the
alternator bearing end, check the cooling fan is secure
and not damaged.
The engine should be sucking in air from outside the
canopy. With the front panel removed to reveal the
battery check the foam seal is complete all around this
compartment and air can only be drawn from outside
and cannot re-circulate.
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