12V Diaphragm Water Pump - PRP-125
7
Maintenance and Troubleshooting
Take precautions to prevent injury due to contact with chemicals. • If the pump has been
used to pump chemicals, flush it with clean water or neutralizing agent before servicing
.
Disassembly/Assembly (Pump Head)
No. Qty. Description
No. Qty. Description
1
2
Switch cover screw
5
2
Electrical connection lead
2
2
Pump head screw
6
1
Pressure switch
3
1
Pump head
7
2
Pressure switch screw
4
1
Motor
8
1
Pressure switch cover
1. Disconnect power to the pump motor.
2. Remove the pressure switch cover screw (
1
) and then remove the cover (
8
).
3. Disconnect the red wires (
5
) from the pressure switch.
4. Remove the screws (
2
) from the front of the pump head (
3
).
5. Slide the pump off the motor (
4
) assembly.
Reassembly (Pump Head to Motor)
1. Align the pump head (
3
) screws tabs to the motor (
4
) and secure it with the pump head screws (
2
).
Tighten the screws, being careful not to over-tighten as the material is ABS plastic.
2. Reconnect the red wires (
5
) to the pressure switch (
6
). Wires can be connected to either terminal.
3. Install the pressure switch cover (
8
) with the pressure switch cover screw (
1
). Tighten the screw,
being careful not to over-tighten as the material is ABS plastic.
4. Reconnect the pump plumbing.
5. Follow the start-up procedure.
