19
February 2007
Part No. 891817 Rev A
SYMPTOM
DIAGNOSIS & CORRECTIVE ACTION
Pump dispenses
product when not turned
on.
•
Installation has positive head pressure and proper valves are not
installed
o
If the product level is above the pump, verify that a solenoid valve is
installed at the top of the tank and a pressure regulator valve is
installed underneath the pump (see Section 2.2.2).
•
Vacuum breaker is defective (only available on Model 720).
o
Disconnect vapor return line and with a plastic container available to
catch any product, determine if product is coming out the vent. If so,
clean or replace the vacuum breaker.
o
Note: On other 700 Series models without the vacuum breaker, it is
possible to siphon product through the pump.
