Multiquip AP6 Series - Manual (Page 33)

AP6/AP8 SERIES TRASH PUMPS • OPERATION AND PARTS MANUAL — REV. #0 (06/11/14) — PAGE 33
OPERATION (MANUAL MODE)
Engine Shut-Down
1. Place engine throttle control in the idle position and
place the ignition key in the OFF position.
Pump Inspection After Use
2. It is recommended that the pump be inspected after
each use for damage or wear.
3. Drain and flush pump volute and priming system from
suction end.
4. Inspect impeller for wear or damage and measure
impeller clearance if it appears worn. Inspect interval
should be about every 1000 hours. This inspection
should be done when the pump is scheduled for
maintenance inspection.
5. Inspect discharge check valve for wear or damage.
Replace if necessary.
6. Inspect fuel tank and check for water by removing 0.5-
inch drain plugs. Do not overtighten when replacing.
7. Check oil reservoirs for contamination or water.
8. Do dry vacuum test to check seal and check valve
seal. This check should be done when the pump is
scheduled for maintenance inspection.
CAUTION -Disconnecting Discharge Hose
If pumping in a positive head (pumping up hill), be
sure to open discharge check valve drain and release
pressure before uncoupling hose.
Pump Storage
For storage of the pump for over 30 days, the following is
required:
„ Drain the fuel tank completely.
„ Run the engine until the fuel in the injection system is
completely consumed.
„ Completely drain used oil from the engine crankcase
and fill with fresh clean oil, then follow the procedures
described in the engine manual for engine storage.
„ Remove the drain plug from the pump and drain out any
water from left in the housing.
„ Remove the pump cover and clean inside of pump
housing. Coat inside of pump housing with a light film
of oil to reduce corrosion. A spray can of oil works well
for this application.
„ Cover suction and discharge ports with duct tape to
prevent any foreign matter from falling into pump.
„ Cover pump and engine with plastic covering or
equivalent and store in a clean, dry place.