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INSTRUCTION MANUAL
(4) Rotor
(a) After checking the oil, put your hand through the pump discharge and
(b) If the impeller resists or feels locked, the pump requires overhaul.
6.3.3 Reinstallation
After the pump has been thoroughly inspected, reinstall it by reversing the lifting
procedure.
If dirt is caught in the elbow, lift the pump back a little and operate pump for 2 or 3
seconds to blow off the dirt.
6.4 Overhaul
Whenever the pump requires overhaul due to operational problems, poor insulation or
as a result of inspection, returns it to us for the job.
Pumps should be overhauled for general inspection every second year to prevent
major troubles even if there are no apparent problems.
(1) Cable disposition
When the pump is lifted for overhaul, it is necessary to disconnect all cables
from the control panel terminal board. At this time, if the cables are pulled out
from the floor-level elbow, reinstallation becomes difficult.
To prevent this, pull the cables with their ends tied with string. When the
cables are put back into their original position after overhaul, tie the cables
ends again with the same string and pull from the opposite side.
(2) Details of overhaul
Overhaul consists of the following work (to be done at our shop) :
(a) Complete disassembly, inspection and cleaning of pump.
(b) Inspection of starter coil and insulation test.
(c) Replacement of worn and damage parts.
(d) Functional tests.
(e) Performance tests. (If required)
6.5 Disassembly and Reassembly
WARNING : WHEN DISASSEMBLING THE PUMP, WARNING SIGNS MUST
!
BE POSTED NEARBY TO PREVENT MISOPERATION BY THIRD PARTIES.
FAILURE TO OBSERVE THIS PRECAUTION CAN RESULT IN DAMAGE OR
SERIOUS ACCIDENTS.
PM32U
turn the impeller. If it turns smoothly, the rotating components should be
in satisfactory condition.
P.29
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