User Guide

Symptom Possible Cause Resolution
Pump will not start Fluid level in tank is low
Add correct fluid. Check for cause of system
fluid loss
Thermal fuse tripped
Allow pump sufficient time to cool down.
Pumps are designed for intermittent duty
Power unplugged or loose electrical
connections
Plug in power or correct faulty electrical
connection
Pressure switch out of adjustment
Adjust pressure switch according to the
manufacturers recommendations
Faulty pressure switch on pump
Obtain pump from reseller and replace
Pump failure
Obtain pump from reseller and replace
Pump will not shut off
Air lock in pump
Turn purge/mixing valve to prime pump
Leak in system or pump
Inspect system and repair leak
Faulty pressure switch on pump
Obtain pump from reseller and replace
Pump will not prime Fluid level in tank is low
Add correct fluid. Check for cause of system
fluid loss
Strainer on inlet hose is blocked
Clean strainer
Product in tank is too thick or Congealed
glycol
Clean strainer and check concentration of
glycol mixture
Inlet tubing leak is drawing air
Replace tubing and repair leak
Inlet/Outlet tube severely restricted (Kinked)
Replace tubing
Noisy / Rough operation
Pump is overloaded and pump pressure
switch not cutting out or cutting out at very
high pressure
Obtain Replacement pump from reseller and
install
Pump pressure switch cutting out at very high
pressure
Adjust pressure switch to lower pressure.
Loose pump head or drive screws
Tighten screws
Feeder is plumbed with rigid pipe causing
noise to transmit
Plumb with PEX or plastic pipe
Feeder Leaking
Loose fittings
Tighten fittings
Pump has punctured diaphragm
Obtain Replacement pump from reseller and
install
System pressure low Fluid level in tank is low
Add correct fluid. Check for cause of system
fluid loss
Breaker
Flip breaker
Pressure switch out of adjustment
Adjust pressure switch according to the
manufacturers recommendations
PRV adjusted to low pressure
Loosen jam nut and adjust hex screw
clockwise to increase pressure
PRV plugged
Open bottom, remove screen if it is still there
and clean thoroughly
Faulty pressure switch
Obtain Replacement pump from reseller and
install
Power unplugged or loose electrical
connections
Plug in or correct faulty electrical connection
Pump failure
Obtain pump from reseller and install
SF100 trouble shooting chart