SECTION 1
WARNINGS
The MSI Hybrid™ Well Service Pump is used in high-pressure and high flow well service applications. High
pressure equipment, if not used and maintained properly, can cause serious injury or death and damage to
equipment and property. Not taking proper precautions and failing to perform routine maintenance and
inspections can also contribute to loss of well control, and such loss could cause serious injury or death and
damage to equipment and property.
ALL OPERATORS AND MAINTENANCE PERSONNEL SHOULD BE THOROUGHLY TRAINED
IN THE SAFE OPERATION, MAINTENANCE, AND INSPECTION OF THIS EQUIPMENT.
Operating the equipment without safe-guards in place can result in serious injury or death and damage to
equipment and property. It is the responsibility of the packager to design and install all guards designed to keep
operators or maintenance personnel away from all moving parts.
Operating the equipment without an adequate, approved, properly maintained and correctly pre-set discharge
pressure relief valve can result in serious injury or death, damage to equipment and property, and will void the
factory warranty. It is the responsibility of the packager to select and install the relief valve. Be sure that no
valves are placed between the pump outlet and the pressure relief valve.
Starting the pump without previously starting the lubricating oil circulation system and the suction supercharge-
pump can result in damage to the equipment.
Running the pump without adequate oil at a safe lubrication pressure, flow, and temperature can result in
damage to the equipment.
Starting the pump with dry and un-lubricated fluid end plungers and packing can result in significant damage to
the packing. If the pump will be idle for more than 2 weeks, back out the packing nut one-half turn to prevent
the packing from taking a set.
Running the pump without adequate inlet pressure can result in cavitations and the premature loss of valves,
valve seats, and fluid ends. The resulting vibrations generated by the pump running while cavitating can also
result in damage to the pump and to adjacent equipment.
Running the pump at speeds or pressures beyond those published in this manual will result in mechanical
failures or pressure containment failures, including loss of well control. Such failures could cause serious injury
or death and damage to equipment and property.
Revision K 03/12/2019
MSI - A Division of Dixie Iron Works, Ltd. All rights reserved.
Page 1