MGII and MG2T GAS FRYER
SERVICE
L22-236 Rev. 2 (06/11)
9
2.2. Filter Troubleshooting
Drain valve is not fully open
Press down on the drain
valve handle and verify that it
is fully open
Drain Valve is open; the oil is
draining slowly or not at all
Drain is plugged with debris.
Use the clean out rod to clear
the drain valve opening. If this
does not clear the blockage,
close the drain valve.
Remove drain “T” to clear
blockage.
Red return valve handle is not
completely open.
Pull on the red return valve
handle to make sure it is
completely open.
Filter circuit breaker is tripped
or in the off position.
Reset the circuit breaker or
press it to the on position.
Filter motor thermal overload
is tripped.
Push the red reset button on
the end of the filter pump
motor.
Filter power cord is
unplugged or loose.
Check the power cord at the
rear of the fryer entrance box,
and at the rear of the pump
box and verify that the power
cords are pushed all the way
into their receptacles.
Pump return handle is pulled
out, but no pumping sound
can be heard.
Loose or defective sensor
switch
Check that the switch is tight
and has the correct gap.
Replace if defective.
Dirty filter media
Change filter paper/pad.
Pickup tube screen clogged
Remove and clean pickup
tube screen cap.
Filter pan not pushed in
completely
Push filter pan in to complete
connection.
Oil is returning to the tank
slowly or not at all.
O-rings not sealing on pickup
tube.
Check and replace o-rings if
defective.
Pickup tube screen not tight.
Tighten pickup tube screen
cap.
Pickup tube screen cap
missing
Locate and install pickup tube
screen cap.
Filter pan not pushed in
completely
Push filter pan in to complete
connection.
Excessive air bubbles are in
the oil being returned to the
tank.
O-rings not sealing on pickup
tube.
Check and replace o-rings if
defective.
Blue drain valve handle not
completely closed
Verify that drain valve handle
is completely closed.
Drain valve is closed, but the
computer controller still
displays “DRAINING”
Improperly adjusted or
defective drain switch.
Check that the switch is tight
and has the correct gap.
Replace if defective.
