Weir SPM QWS 2500 XL, Operation Instruction And Service Manual, Page: 36 / 44

36 of 44
Document P/N: 2P137414
Release Date: 05/29/2017
Revision: IR
Routine Preventative Maintenance:
Maximum service and trouble-free operation can be obtained from the SPM
®
well service plunger pump by
establishing a thorough preventive maintenance program as follows:
During The First 100 Hours of New Pump Operation:

Change power end lube oil filters every 25 hours (or more often if required) to prevent filter bypass.

Thoroughly clean the power end lube oil suction strainer after the first 50 hours and 100 hours
operation.

Change the power end lube oil after the first 100 hours operation and clean the lube oil reservoir.

Change the power end lube oil filters.
Daily Preventive Maintenance:

Check the oil level in the power end lube oil reservoir.

Check the oil level in the plunger lube oil reservoir.

Check the plunger pump for oil leaks and/or fluid leaks.

Check the power end lube oil system for leaks.

Check the plunger lube system for leaks.

Check the supercharge piping for leaks.

Visually check for loose fasteners in the following locations:

Power End mounting bolts.

Stay Rods, and fluid end attachment nuts.

Discharge Flanges.

Companion Flange.

Packing Nuts.

Retainer and Discharge Nuts.

If the suction stabilizer has a nitrogen filled bladder, check the nitrogen charge pressure and
correct as needed. Follow the manufacturer’s charging pressure recommendations, usually 60%-
80% of suction inlet pressure.
Weekly Preventive Maintenance:

Check all items on “daily” list.

Check all valves, inserts, valve seats, and springs.

Check all discharge and suction cover seals.

Check suction pulsation dampener for correct pre-charge.
Monthly (or every 200 hours) Preventive Maintenance:

Check all items on “daily” and “weekly” lists.

Check all fluid cylinder mounting bolts to insure that they are tight with a torque wrench.

Check all plunger pump-mounting bolts to insure that they are tight.

Change power end lube oil filters.

Check all supplies needed for routine maintenance such as o-rings, fluid seals, valves, valve inserts,
valve seats, valve springs, packing, oil seals, filter elements, etc.

Check condition of valve springs; check weight and tension.
Quarterly (or every 600 hours) Preventive Maintenance:

Check all items on “daily”, “weekly”, and “monthly” list.

Change the power end lube oil and refill with the proper grade of gear oil for upcoming ambient
conditions.
SECTION III: MAINTENANCE AND REPAIR