Frymaster Portable Filters MF90 Series - Manual (Page 25)

6-5
Blockage Between Filter Pan and Flex-Hose Valve
Disconnect oil line from
filter pan to pump at the
pump end.
Pump is clear; plug is
in the bottom of the
filter pan or in the line
from the pan to pump.
Disconnect line at filter pan.
Can you blow air through line
from pump to pan?
Turn pump ON and allow it to
operate for a few seconds to ensure
it does not run backwards.
Put your finger over the
pump inlet. Is suction
present?
Remedy problem and continue
filtration process.
Blockage is in pump or in
the discharge line.
Possible blockage
between filter pan
bottom and flex-hose
disconnect.
Yes
No
Yes
Line is blocked. Remove
line, soften and clear
solidified shortening. No
Reconnect line and
operate pump. If still
no oil flow, blockage
is in bottom of pan.