6
macnaught
| instruction manual
INSTRUCTION MANUAL
ELECTRIC DIESEL PUMP KIT
AFP12A (12volt / Automatic Nozzle) | AFP12M (12volt / Manual Nozzle)
AFP24A (24volt / Automatic Nozzle) | AFP24M (24volt / Manual Nozzle)
Problem
Cause
Solution
Pump fails to start
1) Suction hose/tube has a blockage
1) Clear blockage from suction hose/tube
2) Outlet is blocked
2) Check outlet hose and nozzle for blockage
and correct operation
3) Bypass poppet not closing
3) Check bypass valve is closing correctly
4) Vanes sticking
4) Check vanes are sliding freely in the slots
(remove burrs or replace vanes if required)
5) Excessive vane or rotor wear
5) Replace rotor and/or vanes
6) Leak from front o’ring
6) Check o’ring for correct sealing, replace if
required
Pump vibrates but does not turn on
1) Dirt jammed inside the pump
1) Clean pump chamber
2) Faulty motor
2) Replace pump
3) Broken drive key
3) Replace drive key
Low Flow
1) Blocked strainer
1) Clean or replace strainer
2) Restriction on the inlet or outlet
2) Incorrect size hoses used on inlet or outlet
3) Excessive rotor or vane wear
3) Replace worn or damaged components
4) By pass poppet blocked
4) Check poppet valve for correct operation
5) Low fluid level in tank
5) Fill tank
Motor overheating
1) Fluid too thick (viscous)
1) Fluid to be no thicker than Diesel
2) Motor running longer than 30 minutes
2) Pump must only run for 30 minutes before
cooling
3) Blocked suction hose
3) Clean blockage from suction hose
4) Blocked strainer
4) Clean strainer
Motor not turning on
1) Poor electrical connection
1) Clean terminals and battery clamps
2) Battery low or faulty
2) Check battery
3) Blown or faulty fuse
3) Check pump and/or replace fuse
4) Faulty switch
4) Replace switch
Pump leaking out of weep hole
1) Worn or damaged shaft seal
1) Replace seal
2) Fluid compatibility
2) Only use compatible fluid
TROUBLE SHOOTING GUIDE
