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Automatic Overfill Protection
The JohnDow Used Oil Storage System is equipped with an automatic
air shut-off valve that stops the air supply to the pump to prevent over-
filling and overflowing the tank. The air valve will engage when the tank
is at approximately 85% of capacity.
Do not attempt to override the shut-off valve as this may cause damage
to the valve assembly and result in overflowing the tank. Call your used
oil hauler immediately.
Double-Wall, 110% Secondary Containment
The double-wall tank design provides protection against oil leakage in
the unlikely event the inner tank should fail. The outer tank will contain
over 110% of the volume of the inner tank.
Two coupling on the extreme left end of the tank allows for inspection of
the outer tank containment chamber. Use caution to avoid pouring any
oil into the outer tank chamber.
Security Cover
The security cover protects the pump and shut-off valve from damage.
If it is necessary to remove this cover, the air supply must be discon-
nected from the back inside of the cover first. The quick disconnect air
fittings allow the air hose to be removed by simply depressing the grey
ring around the plastic hose and pulling the hose out. The reconnect,
push the hose into the fitting unit, it is secure.
U.L. Listed 1" Diaphragm Pump
The air diaphragm pump is designed to run efficiently at 60 psi. The air
regulator is pre-set at the factory and should not need adjustment.
If the pump fails to run:
• Make sure the air supply is properly hooked up.
• Make sure the tank is not full and automatic shut-off has cut the air
supply.
If the pump runs but is not pumping oil:
• Disconnect the intake hose from the pump and check for suction at
the hose connection point. If there is suction at the pump, then check
the quick disconnect coupler on the other end of the hose for debris
that could be blocking the flow.
• If there is no suction at the pump, call our Service Department at
1-800-433-0708 for help.
Operating Instructions
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