Clarke C32H User Manual

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3.5 ELECTRICAL SYSTEM
3.5.1 Wiring Diagrams (Only with Engine Gauge
Panel)
Drawing No.
Description
(DC Voltage)
Reference
Document
C073148
Instrument Panel
C07
3150
ECM Harness
C073151
C32H-all models
Engine Harness
Drawing No.
Description
(AC Voltage)
Reference
Document
C07
1613
Jacket Water Heater
3.5.2 Checking Drive Belt Tension and Adjustment
All drive belts must be adequately tightened to ensure
that the battery charging alternator is operating
efficiently. Refer to Figure #22.
A
Figure #22
To adjust Belt Tension:
Check belt tension:
- Give at arrow C must be approx. 0.5” (12.7mm).
To increase tension of the alternator driving belt:
- Loosen nut at D.
- Loosen nut B on adjustment rod.
- Tighten nut A to push the alternator to the right to
tighten the belt. Do NOT overtighten the belt.
- Tighten mounting nut B to lock adjustment
in place.
3.5.3 Engine Overspeed
In the event of an engine overspeed, the ECM signals
the main pump controller and also affects an engine
shutdown. Should an overspeed condition occur,
investigate the cause and make necessary corrections
before placing engine back in service. The engine
will be locked out from restarting and the PV380
display gauge will indicate an overspeed shutdown.
A red indicator LED will be illuminated. To reset the
engine and clear the overspeed fault, press the far-
right key on the PV380 display gauge. Then lift the
overspeed reset switch inside the panel. Once reset,
the engine will be ready to restart.
OVERSPEED VERIFICATION
Start the engine via the main pump controller. Hold
the OVERSPEED VERIFICATION switch in the
“up” position. This will provide the main pump
controller with an overspeed signal and engine
shutdown at 30 RPM’s below the rated RPM.
EXAMPLE
Rated Speed: 1760 RPM
Overspeed Shutdown: 2112 RPM (120% of
1760 RPM)
Verification Shutdown: 1730
CAUTION: After verification of overspeed, press
the OVERSPEED RESET button (far-right button on
the bottom of the display gauge) and then lift the
OVERSPEED RESET switch inside the panel to
reset the main pump controller to re-instate normal
operation of the engine and speed switch.
The over speed shut down set point is factory set,
programmed into the ECM, and not field adjustable.
Caution: Do not attempt to overspeed the engine to
verify overspeed shutdown.
3.5.4 Field Simulation of Pump Controller Alarms
Field simulation of pump controller alarms – Refer to
supplemental document C137716 for additional
information.
 Alarm 1: Over speed Shutdown: Follow
over speed verification steps above.
 Alarm 2: Low Oil Pressure: With the engine
running, lift the low oil pressure switch.
(Note: There is no engine mounted Low Oil
Pressure switch to jumper across).
 Alarm 3: High Engine Coolant Temperature:
With the engine running, lift high water
temperature switch. It may take up to 30
seconds to activate the alarm.

Clarke C32H Specifications

General

Brand	Clarke
Model	C32H
Category	Engine
Language	English