Frymaster H55 Series Technical Reference Manual page 84

Oil Quality Sensor
The Oil Quality Sensor, or OQS, was introduced in the fall
of 2015. The sensor is in line with the fl ow of oil as it is
fi ltered. The unit, available on McDonald's LOV or Filter-
Quick fryers, measures total polar material (TPM's). The
count, which is displayed on the controller, is a measure of
the oil quality and its service life. The type of oil used in
the restaurant, which effects how the readings are taken,
must be entered during the setup of the controller/OQS
system. The user is prompted to dispose of the oil as the
TPM count goes up. The conroller can display the actual
TPM count or a text message, indicating oil quality.
The oil sensor and its related in-line pre-fi lter are installed
above and adjacent to the fi lter pan (see arrow above).
Automatic Filtering Fryers
The sensor (arrow) is shown mounted adjacent
and above the oil pan.
Original CAN
cable
The sensor is wired in series
with the CAN bus. The exist-
ing CAN cable is discon-
nected from the second
controller from the left and
the sensor plugged in. The
OQS sensor cable is shown
on the right: black terminal
to existing CAN; gray to con-
troller and ground.
4-40
Video Content
OQS Terminal