Lesson 2/Learning Event 1
During-operation Services.
Use the
following steps
to
perform during-
operation services on the pump unit.
Step 1.
Check that the gages and tachometer work and are reading correctly:
Vacuum Gage: 0 - 15 inches
Pressure Gage: 60 - 120 psi
Oil Pressure Gage: 0 - 60 psi
Tachometer: 3850 RPM or less
CAUTION
Do not operate the pump for more than two minutes with a 0
pressure indication. If more time is needed to correct the fault
shut down.
Step 2.
Check for
fuel
leaks
around
the
fuel
tank,
fuel
lines,
and
carburetor areas.
Step 3. Check the engine for oil leaks. Check for unusual noises or any
abnormal operation during the idling period. The engine should be crisp and
evenly timed Observe the engine exhaust for unusual or excessive smoke. See
that the engine responds smoothly to the throttle.
Step 4.
Check for leaks in the pump pipes, and valves.
Step 5. Check that the prime-detergent tank has liquid in it while valve
No. 4 is open. Close valve No. 4 after the pump is primed and operating.
under pressure.
Step 7.
Check that the nozzles work without leaks.
Step 8.
Check all hoses and couplings for leaks.
Step 9.
During M2 Water Heater operation, check that the pump and fan
motors are working.
Step 10. During M2 Water Heater operation, check for leaks from the pump,
filter, piping, valves, and hose connections while operating the heater
control switch in the PURGE-ON mode. Shut down if leak is found and repair
it, if possible.
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