Filter Pan Switch; Selector Valve - Henny Penny OFE 51X Service Manual

Henny Penny

Filter Pan Switch

After the user initiates a filter cycle, the F5 control system first checks to verify the filter pan is in
place. Filter pan position is confirmed through a circuit from the OMS PCB through a normally
open magnetic proximity switch and back to the OMS PCB. A 12 volt DC signal sent from the
OMS PCB to the magnetic proximity switch. With the filter pan fully inserted, the magnetic prox-
imity switch is actuated closed by the filter pan's magnet, and the 12 volt DC signal returns to the
OMS. If the filter pan is not fully inserted, the magnetic proximity switch is in its normally open
state and the 12 volt DC signal does not return to the OMS. The filter pan switch circuit must be
closed before the filter cycle can progress to the drain step.
Normally open magnetic proximity switch
l
Filter pan switch is actuated closed with pan inserted
l

Selector Valve

Orientation of the selector valve to the vat being filtered occurs as the first filter cycle action. By
first rotating the selector valve to the proper vat position this allows for immediate pump oil flow
and reduces filter idle time. The selector valve is a rotary valve with a fixed body and inner spool
that rotates. Selector valve bodies have four (4) SAE-12 inlet ports and four (4), six (6), or ten (10)
SAE-8 outlet ports. Each outlet port has an associated number engraved in the valve body. The
number of selector valve outlet ports depends on the F5 fryer's vat configuration. Home position
for the selector valve is Port 1 which is always plumbed to the bulk dispose line.
Rotation and positioning of the selector valve inner spool is provided by a motor/encoder
assembly. To rotate the selector valve spool a 24 volt DC signal is sent from the OMS PCB to the
selector valve motor. As the selector valve motor rotates, a pulsing 5 volt DC encoder position sig-
nal is returned to the OMS. Once the desired selector valve position is confirmed, the OMS PCB
removes the 24 volt DC signal, and the motor stops rotating. The selector valve motor will rotate
in either direction to achieve the desired position with shortest travel. The OMS PCB reverses 24
volt DC rotation signal polarity to change motor direction.
The selector valve spool and its motor/encoder shaft are connected by a mechanical coupling. A
cast aluminum housing mounts the motor/encoder and coupling on top of the selector valve.
Three (3) button head screws secure the motor/encoder housing to the selector valve body.
Filter System Sequence of
F5/ LOV 300Open Fryer
40 FM06-077 A 2023