7
2. Remove the coupling guards (use a screwdriver).
3. Remove the couplings.
4. Remove the bolts that fasten the motor to the pump.
5. Turn the motor to the required position (in quarter-turn
increments).
6. Follow steps 10 - 20 under “Motor Replacement”, on
Page 9.
Field Wiring
All wiring connections and wiring sizes must meet National
Electrical Code and local requirements.
Motor Protection
See the motor nameplate for electrical connection/wiring
diagram.
Berkeley pumps must be used with the proper size and type
of motor starter to ensure protection against damage from
low voltage, phase failure, current imbalances, and
overloads. The overload should be sized to trip at the full-
load current rating of the motor.
OPERATION
Priming
Hazardous pressure. Do not run the pump
with the discharge valve closed; the water in the pump may
boil, causing risk of explosion and steam burns to anyone
nearby.
Hazardous voltage. Disconnect all power to
the pump before servicing or working on the pump. Make
sure that the power is locked out and that the pump cannot
be accidentally started.
NOTICE: Under no circumstances should the pump be
operated without flow through the pump. Never operate
the pump dry.
Operation of closed systems or open systems with the
liquid level above the pump priming plug:
1. Close the discharge isolating valve and loosen the
needle valve located in the assembly in the pump head
(Figure 8). Do not remove the needle valve.
NOTICE: On BVMI(X)2/4 models, remove the coupling
guard for access to the vent plug.
Risk of water damage and injury. Watch the
direction of the priming plug and make sure that the liquid
escaping from it does not injure persons nearby or damage
the motor or other components. In hot water installations,
pay particular attention to the risk of injury from scalding
hot water.
2. Slowly open the isolation valve in the suction pipe until
a steady stream of liquid runs out the vent in the priming
port.
3. Tighten needle valve to 25 inch-pounds. Completely open
isolation valves.
NOTICE: Please turn to “Starting”, Page 8, before
proceeding any further.
Operation of open systems with the liquid level below the
top of the pump:
NOTICE: The suction pipe requires a check valve or
isolation valve.
1. Close the discharge isolation valve.
2. Remove the vented priming plug.
3. Pour liquid through the priming port until the suction
pipe and the pump are completely filled with liquid.
4. Replace the vented priming plug and tighten it securely.
5. Repeat steps 1-4 until the pump is primed.
NOTICE: Please turn to “Starting”, Page 8, before
proceeding any further.
Checking Direction of Rotation
NOTICE: Do not disconnect the motor from the shaft to
check the direction of rotation. If you remove the coupling,
then you must adjust the shaft position when you reinstall
it. This must be done before starting the pump.
Arrows on the pump head show the correct direction of
rotation. When seen from the motor fan, the pump should
rotate counterclockwise (). For pump motors without a
fan remove one of the coupling guards and look at the
coupling to determine the direction of rotation. Turn off the
pump and replace coupling guard.
NOTICE: Do not check the direction of rotation until the
pump has been filled with liquid. See “Priming”, at left and
above.
1. Switch power off.
2. Remove the coupling guard and rotate the pump shaft to
be certain it can turn freely. Replace the coupling guard.
3. Verify that the electrical connections are in accordance
with the wiring diagram on the motor.
4. If the fan is visible, turn on and off to verify rotation.
5. To reverse the direction of rotation, first switch OFF the
power supply.
