MSI QI-1000, Technical Manual, Page: 6 / 56

nuts, valve stop, springs and valve covers from the fluid end and blow all moisture out. Wear proper
protective gear while blowing out moisture to prevent contact with the well service fluid. Generously
mist the inside of the fluid end with a suitable lubricant to displace trapped water and create a
protective film on the metallic components. Replace the valve covers, springs, valve stop, and cover
nuts. Seal off all inlet and outlets with mechanical blind seals. CAUTION: Well service fluid will be
trapped between the inlet and outlet valves and will spill out when removing the suction valve covers.
Preparation for spillage is important for safety and environmental reasons. A catch pan and appropriate
absorbent materials will be needed.
For the Power End:
If the pump has been in service, moisture from humidity can enter through the oil cap/breather and will
accumulate in the inside bottom of the power end. If this occurs, remove the back access panel and
wipe out the accumulated moisture with a suitable absorbent. Do not use granulated absorbents inside
the pump. Replace the back cover after moisture has been removed. To further protect the pump from
humidity while in storage, especially when stored near large bodies of water or in areas of high
humidity, use duct tape to seal off the oil cap/breather. Sealing in this manner will be more effective if
the air inside the pump is warmer than outside air prior to sealing the oil cap/breather. If the cap on the
lubricating oil reservoir is a breather style cap, it should also be sealed at this time.
Outdoor Storage:
If the used pump is to be stored outdoors, it should be placed in a covered location that will protect the
pump from direct exposure to moisture and sunlight. If a covering is not available, the pump should be
covered and tied with a heavy duty tarp.
Preservation Between Jobs:
The internal fluid end components can oxidize and corrode after exposure to well service fluid,
especially if the well service fluid contained water, brine, or acids. If possible, remove the valve covers
and use compressed air to blow out moisture from the fluid end (see CAUTION statement above).
After removing the valve covers, generously mist the inside with a suitable lubricating oil to displace
moisture and create a protective film on the metallic components. Wear proper protection when
working with compressed air on the inside of the fluid end. Covering all exposed discharge or suction
openings will help in further preventing ingress of moisture to the pump.