Frymaster Enodis MRE14 SERIES - Manual (Page 18)

1-10
If the pump motor overheats, the thermal overload will trip and the motor will not start until it is
reset. If the pump motor does not start, press the red reset switch (button) located on the rear of the
motor.
If the pump starts after resetting the thermal overload switch, then something is causing the motor to
overheat. A major cause of overheating is when several frypots are filtered sequentially, overheating
the pump and motor. Allow the pump motor to cool at least 30 minutes before resuming operation.
Pump overheating can be caused by:
• Solidified shortening in the pan or filter
lines, or
• Attempting to filter unheated oil or
shortening (cold oil and shortening are
more viscous, overloading the pump
motor and causing it to overheat).
If the motor runs but the pump does not return
oil, there is a blockage in the pump. Incorrectly
sized or installed paper/pads will allow food
particles and sediment to pass through the filter
pan and into the pump. When sediment enters
the pump, the gears bind, causing the motor to
overload, again tripping the thermal overload.
Shortening that has solidified in the pump will
also cause it to seize, with the same result.
A pump seized by debris or hard shortening can
usually be freed by manually moving the gears
with a screwdriver or other instrument.
Disconnect power to the filter system, remove the input plumbing from the pump, and use a
screwdriver to manually turn the gears.
● Turning the pump gears in reverse will release a hard particle.
● Turning the pump gears forward will push softer objects and solid shortening through the
pump and allow free movement of the gears.
Incorrectly sized or installed paper/pads will also allow food particles and sediment to pass through
and clog the suction tube on the bottom of the filter pan. Particles large enough to block the suction
tube may indicate that the crumb tray is not being used. Pan blockage can also occur if shortening is
left in the pan and allowed to solidify. Blockage removal can be accomplished by forcing the item
out with an auger or drain snake. Compressed air or other pressurized gases should not be used to
force out the blockage.
1.9.2 Replacing the Filter Motor, Filter Pump, and Related Components
1. Remove the filter pan and lid from the unit. Drain the frypots into a McDonald’s Shortening
Disposal Unit (MSDU) or other appropriate metal container.
Sediment Particle
Oil Flow
Up for reverse
Down for forward
Sediment Particle