12V Diaphragm Water Pump - PRP-125
5
Plumbing
•
Use flexible hose of a pressure rating that is compatible with the fluid to be pumped. The pump is
not designed to be connected directly to rigid pipes/tubes.
•
Tubing should be a minimum of 9.5mm (3/8") internal diameter (ID) and at least 500mm (20”) in
length to avoid excess stress on the pump parts.
•
Do not crimp or kink the tubing.
•
The use of check valves in the plumbing system could interfere with the priming ability of the pump.
If a check valve is installed, it must have a cracking pressure of no more than 2 PSI (0.14bar).
•
Use a minimum 40-mesh strainer or filter in the pump inlet line to prevent foreign debris from
entering the pump. Failures due to foreign debris entering the pump will not be covered under
warranty.
The pump comes with 90° tube connectors that can be used for easier
plumbing. To attach, firmly push the large diameter end of the 90° connector
to the required connector, then push the “U” clip through the holes in the
connector to secure.
Connector tubes to connectors and secure with appropriate clamps/clips.
The direction of flow is shown below:
Electrical Connection
The pump should be wired to an individual (dedicated) circuit, controlled with a certified double-pole
switch rated at or above the fuse ampere indicated on the pump motor label.
The red lead connects to the power source positive
+
terminal. The black lead is ground and connects
to the power source negative
-
terminal. Use minimum AWG T6 wire. Use a 5A fuse to protect the
system wiring and components.
