Owner manual

Motor/Electrical
Install the motor according to NEC requirements and local electri-
cal codes. The motor should have an overload protection circuit.
Wire the motor for counter-clockwise rotation when facing the
fan end of the motor.
CAUTION: Do not operate the pump to check rotation until
the pump is full of liquid.
Check all electrical connections with the wiring diagram on the
motor. Make sure the voltage, frequency, phase and amp draw
comply with the supply circuit.
If motor is supplied by Finish Thompson please use the following
wiring diagram:
If utilized, verify that the power monitor has been properly
installed according to the manufacturers instructions.
To verify correct rotation of the motor:
1. Install the pump into the system.
2. Fully open the suction and discharge valves.
3. Allow fluid to flow into the pump. Do not allow the pump to
run dry. PTFE or ceramic bushings can’t be run dry without
damage to pump components.
4. Jog the motor (allow it to run for 1-2 seconds) and observe
the rotation of the motor fan. Refer to the directional arrow
molded into the housing.
NOTE: A pump running backwards will pump but at a greatly
reduced flow and pressure.
Section III - Start- up and Operation
1. This pump must be filled from a flooded suction tank (grav-
ity) or primed with liquid from an outside source. DB Series
pumps are not self-priming.
2. Open the inlet (suction) and discharge valves completely and
allow the pump to fill with liquid.
3. Close the discharge valve.
4. Turn the pump on. Slowly open the discharge valve. Adjust
the flow rate and pressure by regulating the discharge valve.
Do not attempt to adjust the flow with the suction valve.
5. Use of a power monitor is strongly recommended for pumps
with PTFE bushings. The power monitor will stop the pump
and help prevent damage if the pump should run dry.
Shutdown
Use the following procedure to shutdown the pump.
1. Slowly close the discharge valve.
2. Turn off the motor.
3. Close the suction valve.
Flush Systems
CAUTION: Some fluids react with water; use compatible flush-
ing fluid.
1. Turn off the pump.
2. Completely close the suction and discharge valves
3. Connect flushing fluid supply to flush inlet valve.
4. Connect flushing fluid drain to flush drain valve.
5. Open flushing inlet and outlet valves. Flush system until the
pump is clean.
Section IV - Maintenance
Recommended Maintenance Schedule
The recommended maintenance schedule depends upon the na-
ture of the fluid being pumped and the specific application. If the
pump is used on a clean fluid, it is recommended that the pump
be removed from service and examined after six months of op-
eration or after 2,000 hours of operation. If the pump is used on
fluids with solids, high temperatures, or in other conditions that
could cause accelerated wear, then this initial examination should
be sooner.
After the initial examination of the internal components and wear
items are measured, a specific maintenance schedule can be de-
termined. For best results, it is recommended that the pump be
removed from service annually for examination.
Section V - Disassembly
WARNING: Rotating Parts. This pump has components that
rotate while in operation. Follow local safety standards for locking
out the motor from the power supply during maintenance or service.
WARNING: Chemical Hazard. This pump is used for trans-
ferring many types of potentially dangerous chemicals. Always
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