Field Simulation Of Pump Controller Alarms; Battery Requirements; Engine Speed Adjustment - Clarke C18H Instruction Manual

Start the engine via the main pump controller; the
speed switch will generate an overspeed signal and
shutdown protecting both the engine and pump.
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 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 C138127 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 180
seconds to activate the alarm.
(Note: There is no engine mounted High
Coolant Temperature switch to jumper
across).

Alarm 4: Over crank:
Lift and hold the OVERSPEED RESET
SWITCH for 5 seconds prior to initiating the
6 crank cycles from the fire pump controller.
Ensure that the OVERSPEED RESET
SWITCH is held for the entire duration of
each of the 6 crank attempts. Each time,
while the engine is resting for 15 seconds
between cranking attempts, release the
OVERSPEED RESET SWITCH for 3
seconds. Before the engine cranks again,
activate the OVERSPEED RESET SWITCH
and continue holding throughout the crank
attempt, releasing in between each attempt.
NEVER shut off the fuel supply to the
engine to prevent it from starting. Shutting
off the fuel supply will cause an air lock
condition in the fuel system and possibly
cause fuel system component damage. At
the test conclusion, plug the BASE auto-
switching device back into the 26-pin
connector. ENSURE THE CONNECTOR
LATCHES. Toggle the ECM SELECTOR
SWITCH to Alternate ECM and back to
Primary ECM. Verify the 6-up display on
the PV380 display gauge populates data for
all 6 parameters with both Alternate ECM
and Primary ECM selected. NOTE: It may
take a couple seconds for the 6-up display to
sync with the ECM selected.

Alarm 5: Low Engine Coolant Temperature:
With engine at rest, lift low coolant
temperature switch for 25 seconds.

Alarm 6: ECM Warning: Lift the
OVERSPEED RESET SWITCH for 2
minutes with engine not running to verify
ECM Warning Alarm; note engine will
automatically switch to alternate ECM.

Alarm 7: ECM Failure: After ECM Warning
Alarm has been tested, continue lifting
OVERSPEED RESET SWITCH for
additional 2 minutes with engine not running
to verify ECM Failure Alarm. After
activation of both ECM Warning and Failure
Alarms, activate the ECM Failure Reset
Switch inside the engine control panel.

3.5.5 Battery Requirements

All Clarke engine models require 8D batteries, as
sized per SAE J537 and NFPA20. The battery
should meet the following criteria:
Cold Cranking Amps (CCA @ 0°F): 1400
Reserve Capacity (minutes): 430
Refer to Clarke drawing C131885 (see Page 5)
for additional information on Clarke supplied
batteries.
3.6

ENGINE SPEED ADJUSTMENT

All governor and speed control functions are
programmed into each ECM at the factory. During
Start-Up Inspection, some minor speed adjustment
may be required.
43