Installation
© 2021 EMP Inc.
11
Hose Clamps
When making the inlet and outlet hose connections to the pump it is recommended to use SAE20CT worm drive
type hose clamps. Torque worm drive clamps to 45 in-lbs per SAE J1508. Spring type clamps are not
recommended.
System Fill Procedure
CAUTION: Do not run the pump without fluid present. If run dry even for a short period the seal will
be damaged.
CAUTION: Pump may start running upon connection of power, ground and ignition. Do not make
electrical connections until pump and system are filled with fluid.
CAUTION: Systems that are not properly filled may leave air in the pump, creating a condition that
may damage the seal due to low lubrication.
CAUTION: When air becomes trapped in the pump, the pump will not circulate fluid with the potential
to cause damage to components in the system.
CAUTION: EMP warranty does not cover seal damage due to low lubrication.
Approved Fluids
1. Fluids must conform to ASTM D6210-10 or ASTM D3306 for quality and maintenance.
2. Use of coolants containing silicates and phosphates can lead to reduced pump seal life and gel formation in
cooling system components.
3. Use of organic acid technology (OAT) coolants that are silicate and phosphate free will maximize pump seal
life.
4. Customer must verify all WP120 fluid contacting parts are compatible with system components and the
coolant selected for the application.
5. For best results cooling system materials, coolant working life, operating temperature range and other system
details should be reviewed with coolant manufacturer to ensure the proper coolant selection.
NOTE: Use distilled water to dilute coolant or use pre-mix coolant.
CAUTION: Use of “Stop Leak” or radiator cleaner style system additives is not approved.
Each time the cooling system is drained
Caution must be taken to ensure the system is refilled properly to prevent running the pump in a dry state.
1. Install pump and piping according to installation instructions.
2. Ensure flow path is open through the entire system.
3. Fill the system with fluid such that the pump is full of fluid and there are no air pockets in the piping leading
to the pump.
4. Run the pump at 4600 rpm, ensuring fluid levels are topped off as air is pushed out of the system.
CAUTION: Do not allow the pump fluid supply to become empty. The fluid level in the surge tank will
drop rapidly at top speed.
5. Verify the pump is moving fluid by observing the input power of the pump during the fill process using
EMPower Connect service tool or a quality amp meter. With the pump operating at 4600 rpm, the input
power must be above 200W (28V and 7A or 14V and 14A). If the pump is below 200W within 1 minute, turn
off pump, purge system air and restart the procedure.
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