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TROUBLESHOOTING
Vibration induced by sea conditions or transporting may cause plumbing or pump hardware to loosen.
Check for system components that are loose. Many symptoms could be resolved by simply tightening.
Check the following items along with other particulars of the system.
PUMP WILL NOT START/ BLOWS CIRCUIT:
Is the motor hot? Thermal breaker may have triggered; it will reset when cool.
Electrical connections, fuse, main switch, and ground. (corrosion)
Is voltage present at the switch? Bypass the pressure switch. Does the pump operate?
Charging System for voltage (±10%) and good ground.
For improper fuse rating or wire size.
For an open or grounded circuit, or motor.
For seized or locked drive/diaphragm assembly.
WILL NOT PRIME/SPUTTERS: (No discharge/Motor runs)
Is the strainer clogged with debris?
Is there debris in the through hull fitting?
Is the inlet plumbing sucking in air at tubing connections (vacuum leak)?
Is inlet/outlet plumbing severely restricted or kinked?
Proper voltage with the pump operating (±10%).
For debris in pump inlet/outlet valves or swollen/dry valves.
Pump housing for cracks or loose drive assembly screws.
PUMP WILL NOT SHUT-OFF / RUNS WHEN NOZZLE IS CLOSED:
Output side (pressure) plumbing for leaks.
For air trapped in outlet side or pump head.
For correct voltage to pump (±10%).
For loose drive assembly or pump head screws.
Is the internal check valve held open? Are the valves swollen or held open by debris?
Pressure switch operation/adjustment incorrect.
NOISY OR ROUGH OPERATION:
For plumbing which may have vibrated loose.
Is the pump plumbed with rigid pipe causing noise to transmit?
Does the mounting surface multiply noise (flexible)?
For mounting feet that are loose or compressed too tight.
For loose pump head or drive screws.
The motor with pump head removed (3 long screws). Is noise from motor or pump head?
LEAKS FROM PUMP HEAD OR SWITCH:
For loose screws at switch or pump head.
Switch diaphragm ruptured or pinched.
For punctured diaphragm if water is present in drive assembly.
Check for damaged pump head (cracked).
FRONT VIEW
1/2" NPT-14 (F) X
1/2" -14 NPT (Male)
911-738 Rev F
HEX-WING FITTINGS AVAILABLE
HEX-WING
244-2946
1/2" NPT-14 (F) X
1/2" NPT-14 (F) X
3/4" Barb Straight
5/8" Barb Straight
244-3366
244-3946
1/2" NPT-14 (F) X
1/2" NPT-14 (F) X
3/4" Barb Elbow
5/8" Barb Elbow
244-2936
244-2926
1/2" NPT-14 (F) X
1/2" NPT-14 (F) X
1/2" Barb Straight
3/8" Barb Straight
244-3936
244-3926
1/2" NPT-14 (F) X
1/2" NPT-14 (F) X
1/2" Barb Elbow
3/8" Barb Elbow
244-2916
244-2906
1/2" NPT-14 (F) X
1/4" Barb Straight
244-3916
244-3906
1/2" NPT-14 (F) X
1/4" Barb Elbow
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