Slurry Pump
WH15AM1AAA0EN_06B.DOC JAN 05-W02
Operation
2/2
• For short stoppage periods ONLY and where there is NO risk of the slurry settling out, or
solidifying in the system:
Pumps with expeller seal - immediately after shutting down, close the
isolation valves and then drain the pump
and the sump, if necessary.
Pumps with water flushed gland or
mechanical seal
leave the flush water ‘ON’ when shutting
down the pump, then close the isolation
valves and finally drain the pump and the
sump, if necessary.
Where there is a risk of slurry settling out, or solidifying, refer to the plant operation manual
for the appropriate shutdown procedure.
CAUTIONS
FORMATION OF ICE CAN BLOCK OR BURST THE PIPEWORK AND THE PUMP CASE. IN BELOW
FREEZING CONDITIONS, ENSURE THAT THE PUMP CASE, AND PUMP INLET AND OUTLET PIPEWORK IS
DRAINED OF ALL SLURRY FOR ANY LENGTHY SHUT-DOWN.
8.3 Running checks
During pump operation, the following checks should be made:
1. Check for leakage from the inlet and outlet connections, and from the gland seal.
NOTE: AN UNTIGHT INLET FLANGE MAY NOT BE EASILY NOTICEABLE DURING OPERATION, AS THE
PUMP COULD BE DRAWING AIR. CHECK FOR INLET-SIDE LEAKS BEFORE START-UP.
2. Check for excessive noise and vibration -see Description, section 2.
3. Check bearing temperature and lubrication –see Lubrication, sub-section 9.4.
4. Periodically verify that the shaft seal is correctly adjusted. If a water flush gland seal
is fitted, ensure that the water supply is at the correct pressure and flow rate. (Refer
to section 9.5.3 for shaft seal setting details.)
5. Check that the pump performance is satisfactory. (See Capacity Curves, section 2.7)
NOTE: IF THE RUNNING CHECKS ARE UNSATISFACTORY, PUMP ADJUSTMENT OR MAINTENANCE MAY
BE REQUIRED.
IMPORTANT NOTE: AFTER THE FIRST 100 HOURS OF OPERATION, CHECK AND ADJUST THE IMPELLER
AXIAL CLEARANCE. SEE SECTION 9.5.1.
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