3
3.
If the pump operates on a suction lift and no foot valve is provided, use a vacuum pump or ejector operated
by air, steam, water, etc. to evacuate air from the pump case and suction line by connecting the ejector to
the priming connection on top of the pump case.
Check direction of rotation before starting pump. Rotation should be the same as the direction
arrow on the case.
CAUTION:
Do not operate without liquid. Pump seals depend on the liquid being pumped for lubrication.
Make sure pump is primed and that no air is in the suction piping and the pump case.
Make sure all valves open or closed as required by your specific requirements.
Start driver:
Open discharge valve slowly when the pump is up to speed.
CAUTION:
Overheating and/or loss of prime will result if the pump is operated against a closed valve for
more than a few minutes.
NOTE:
Should the pump fail to build up pressure or discharge water when the discharge valve is
opened, stop the pump and read Section Locating Operating Difficulties.
4-2
Shutdown:
The pump may be stopped with the discharge valve open without causing damage. However, in
order to prevent water hammer effects, as a general recommendation the discharge valve should
be closed first.
1.
Close discharge valve.
2.
Stop driver.
3.
If danger of freezing exists, isolate the pump by closing a valve in the pump suction line, if fitted,
and drain the pump completely
