Jul 23


Over one hundred years of centrifugal pump building experience along with a continuing quality assurance program combine to produce a pump which will stand up to the toughest pumping projects.

This manual will provide helpful information concerning installation, maintenance, and proper service guidelines.


Upon receiving the centrifugal pump, it should be inspected for damage or shortages.  If the manual is removed from the crating, do not lose or misplace.


Short Term – Crown pumps are manufactured for efficient performance following long inoperative periods in storage. For best results, pumps can be retained in storage, as factory assembled, in a dry atmosphere with constant temperatures for up to six (6) months.

Long Term – Any length of time exceeding six months, but not more than twenty-four months. The units should be stored in a temperature controlled area, a roofed over walled enclosure that provides protection from the elements (rain, snow, wind blown dust, etc.) If  the centrifugal pump extended high humidity is expected to be a problem, all exposed parts should be inspected before storage and all surfaces that have the paint scratched, damaged, or worn should be recoated with a water base, air dry enamel paint. All surfaces should then be sprayed with a rust-inhibiting oil.


B-1) Clearances:

B-2) Centrifugal Pump Suction

B-3) Base Mounted Units

B-4) Centrifugal Pump Discharge

B-5) Influent Pipe

B-6) Sump Liquid Level Controls


Such as pumps water, oil, mud, slurry, etc. Used in well drilling mud solids control. For whole drilling fluids processing system it is usually used as transit pump. Hold following centrifugal pump, vertical pump, horizontal pump, submersible pump, etc. According to usage will be shale shaker pump, desilter pump, desander pump, mud mixing pump, shearing pump.

Different centrifugal pump usage and different installation will hold different name and operations manner.


1. Before starting the Centrifugal pump:

A.) Check the pedestal for the proper amountof non-detergent oil.

Centrifugal pump

Centrifugal pump

B.) Place the self feeding grease lubricator in operation by turning the wing nut on the threaded plunger shaft counter clockwise as far as it will go. Do not force the plunger into the grease cup as this can cause a seal failure.

C.) For priming purposes, fi ll the pump case with water.

2. The centrifugal pump case will not freeze during cold weather operation as long as the pump is running. To avoid freezing during idle periods:

A.) Drain the pump case by removing the one or two drain plugs at the bottom of the pump case.

B.) Heat the room, the pump or the water in the pump. An electrical pump case heater is available from he factory as an option.

3. To obtain more capacity, increase the speed of the  centrifugal pump. To reduce capacity, lower the speed of the pump or restrict the discharge line by means of a valve. Increasing the speed will require more horsepower.

4. The discharge of a self-priming centrifugal pump may be closed without damaging the pump.

5. The pump should not be run without liquid in the pump case as the rotary shaft seal may be damaged.

6. If the pump has been idle for some time between uses, it may appear to be stuck or locked in place. This sticking may be caused by a fi lm of rust or dirt lodging between the impeller and the pump volute


Once a year, or whenever the suction line will not hold a column of water, remove the Easy-access elbow cover

 on the centrifugal pump suction and inspect the check valve. The rubber check valve may become torn or may deteriorate with use. Deposits may also build up between the rubber and the seat. When replacing, use a little grease on the rubber for proper sealing. If the impeller is ever removed for any reason when the mechinical seal is in good condition, do not disturb the seal other than removing or replacing the seal spring, otherwise the seal will leak and require replacing.


written by GN Shale Shaker \\ tags: , ,

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