Product Manual

Installation

Step One: Mounting

• This NorthStar pump is self-priming.

• The pump should be located in an area that is dry and provides adequate ventilation.

• The pump may be mounted in any horizontal position. DO NOT mount pump vertically, doing so

will prevent the Motor Armor system from operating correctly.

• Secure the rubber base with #10 fasteners. DO NOT compress the base, as doing so will reduce

the ability to isolate vibration and noise. Note: Fasteners are not included.

Step Two: Plumbing

• See table below for port size and recommended hose sizes.

o Remove shipping plugs from pump ports.

o Use NorthStar quick connect fittings to connect flexible high-pressure tubing to the quick

connect ported pumps.

o To insert quick connect fittings, lubricate O-ring with water and twist fitting while inserting

into pump port.

Pump model

Ports

Minimum inlet hose size

Minimum outlet hose size

157145

3/4" Quick Connect

1/2" (13mm) Inside diameter

3/8" (9.5mm) Inside diameter

157147

3/4" Quick Connect

1/2" (13mm) Inside diameter

157153

3/4" Quick Connect

1/2" (13mm) Inside diameter

• Tubing should be compatible with the spraying fluid. At least 18" [450mm] length is suggested to

minimize stress on the fitting/ports and reduce noise. Allow for the shortest possible tubing route

and avoid sharp bends that may kink over time.

• Installation of a 50-mesh strainer is recommended to prevent foreign debris from entering the

system. Failures due to foreign debris are not covered under the warranty.

NOTE: Restrictions on the inlet may cause a loss in performance. Inlet pressure must not exceed 30 psi [2.1

bar]

• If a check valve is installed in the plumbing, it must have a cracking pressure of no more than 2

psi [.14 bar].

CAUTION

DO NOT locate the motor near low temperature plastics or combustible material. The surface

temperature of the motor may exceed 250°F [121°C].

Correct orientation

Incorrect orientation