TECHNICAL INSTRUCTIONS
4853989
10/ 2003
Our policy is one of continuous improvement and we reserve the right to alter specifications of our products at any time.
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Check bearing lubrication is provided (see lubrication section). Also check driver lubrication.
If the pump has soft packed sealing, check that the stuffing box has been packed.
Close drain valves. Ensure that the pump is primed. Never run the unit dry. The liquid in the pump
serves as a lubricant for close running fits within the pump and the pump may be damaged if operated
dry. Vent and drain plugs are provided either in the casing, or in external piping.
Suction piping should have been flushed clean during installation.
Failure to do this is a common
reason for startup failures.
3.2
STARTING
Close valve in discharge line. Open fully all valves in the suction line.
Turn on seal water to the stuffing box where external pipe supplied.
Prime the pump and start the pump driver.
When the pump is operating at full speed, open the discharge valve slowly.
Do not operate the pump for prolonged periods with a closed discharge valve, so as to avoid overheating.
The pump should be shut down at once and the trouble corrected if the pump is running at its rated speed
and found to have any of the following defects:
a.
No liquid delivered.
b.
Not enough liquid delivered.
c.
Not enough pressure.
d.
Loss of liquid after starting.
e.
Excess vibration.
f.
Motor runs hot.
g. Pump bearing overheating.
3.3
RUNNING
While the pump is running, a periodic inspection should be made of:
a. Bearings - Check the bearings for temperature, which should not normally exceed 158
o
F (70
C)
,
af
t
er
running in period.
b. Stuffing Box (if Soft Packed) - Ensure there is sufficient leakage to lubricate the packing.
c. Suction and discharge gauge readings (if included).
3.4
STOPPING
a. Slowly close delivery valve, then shut down driving unit in accordance with manufacturer's
instructions.
b. Shut off external sealing liquid supply to relieve stuffing box pressure, where fitted.
Summary of Contents for HYF
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