Hale 80FC - Manual (Page 62)

❑ Preventive Maintenance
62 Pump Ends
p/n: 029-0020-61-0
5. STOP the priming pump and observe the gauge. If the vacuum falls more
than 10” Hg. in 5 minutes, it is an indication of at least one air leak.
Vacuum leaks can often be detected by ear if the apparatus engine is
turned OFF. Correct leaks immediately before returning the pump to ser-
vice.
6. Test the suction hose as follows:
❑ Attach the suction hose to the pump.
❑ Place a suction tube cap on the end of the hose in place of a strainer.
❑ Close all valves and drains. Cap all suction openings and the outlet of the
suction side relief valve (if so equipped).
❑ Connect a calibrated vacuum gauge or manometer to the intake test
gauge connection on the pump panel.
❑ Engage the priming pump until the gauge indicates at least 22” Hg vac-
uum.
❑ Watch the gauge. If the vacuum falls more than 10”Hg. in 5 minutes, it
indicates at least one air leak.
❑ Verify the test gauge and the apparatus gauge display the same readings.
Repair or replace any gauges that do not display the correct pressure.
IMPORTANT !
IF LEAKS CANNOT BE DETECTED BY FOLLOWING THE PROCEDURE, IT IS
ADVISABLE TO TEST THE PUMP HYDROSTATICALLY. TO TEST:
❑ OPEN ALL VALVES
❑ PLACE CAPS ON ALL VALVES
❑ CONNECT A POSITIVE PRESSURE SOURCE
❑ INSPECT THE PUMP FOR LEAKS
4.6 ANNUALLY
Annual maintenance consists of post-operation, weekly, and monthly mainte-
nance, plus the following tasks:
❑ Pump head bearing lubrication - see page 63.
❑ Replacing the pump gearbox oil - see page 63.
❑ Replacing the pump pedestal oil - see page 64.