Flowserve Pump Division - 6
Section I: Introduction and General Description
INTRODUCTION
The Flowserve Pump Division MSX Series 2 non-clog submersible pump is a volute-type centrifugal
pump designed for handling sewage and industrial waste. The pump is driven directly by a motor. This
pump is suitable for use in wet or dry pit applications.
MOTOR
The Flowserve Pump Division submersible motor is a three-phase, squirrel cage motor with a watertight
stator housing designed specifically for the operation of Flowserve Pump Division non-clog pumps. The
power supply cable is brought into the motor through a watertight cable gland. The rotor is impregnated
under vacuum with a baked-on varnish to protect it against corrosion and is then dynamically balanced.
The motor is constructed to meet the requirements of the ANSI/NFPA 70 (National Electric Code) Class
1, Division 1, Group C & D explosion proof service. However, only motors nameplated Class 1, Division
1, Group C & D are certified as explosion proof.
CAUTION: MOTORS NAMEPLATED CLASS 1, DIVISION 1, GROUP C & D MUST BE SERVICED
BY CERTIFIED FLOWSERVE PUMP DIVISION SERVICE PERSONNEL. SERVICE BY
PERSONS OTHER THAN FLOWSERVE PUMP DIVISION PERSONNEL VIOLATES
SAFETY REGULATIONS, NEGATES THE EXPLOSION PROOF CERTIFICATION AND
VOIDS THE FACTORY WARRANTY.
Prior to installing or operating your MSX Series 2 pump, become familiar with the following:
1. NEMA Publication MG-1 (or latest release) Safety Standards for Construction and Guide
for Selection Installation and Use of Electric Motors and Generators
2. The National Electric Code
3. Local codes and practices
COOLING SYSTEM
The MSX Series 2 motor has a self-contained, closed-loop cooling system, which makes it suitable for dry
pit as well as wet pit applications. A secondary impeller is used to pump the cooling fluid through a heat
exchanger plate, transferring heat to the pumped fluid. The fluid then flows around the stator housing
removing heat from the motor and back to the circulating impeller.
CAUTION: THE OPERATION OF THE COOLING SYSTEM IS DEPENDENT UPON THE USE OF
THE PROPER COOLING FLUID. THE USE OF A NON-APPROVED COOLING FLUID
WILL INCREASE THE INTERNAL TEMPERATURE OF THE MOTOR, WHICH MAY
RESULT IN PRODUCT DAMAGE AND WILL VOID THE FACTORY WARRANTY.
CAUTION: THE USE OF FLOWSERVE PUMP DIVISION REPLACEMENT PARTS IS CRITICAL
TO THE PROPER OPERATION OF THIS COOLING SYSTEM. PRECISE
TOLERANCES, METALLURGY, MANUFACTURING PROCESSES AND HEAT
TREATMENT ARE IMPORTANT FACTORS IN THE DESIGN OF EACH COMPONENT
AND THE SERVICE IT WILL PROVIDE. THE USE OF NON-OEM PARTS MAY
RESULT IN PRODUCT DAMAGE AND WILL VOID THE FACTORY WARRANTY AND
EXPLOSION PROOF CERTIFICATION.
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