Frymaster H55 Series Technical Reference Manual page 106

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When oil is low, the SIB, monitoring the Automatic Top

Off Probe, signals the Filter Interface Board, which causes

the Valve Interface Board to direct 24VDC to the rotary

actuator on the return valve of the aff ected vat. Th e FIB

also sends 24VDC to the top off pump.

Oil fl ows from the JIB until the Automatic Top Off probe

senses the oil. Th e SIB then signals to halt the fi lling. Th e

FIB then signals the VIB to close the return valve. It also

stops the top off pump.

Th e automated fi ltration has a similar sequence. Th e SIB

monitors cook cycles in most restaurant settings and the

fryers calls for a fi ltration when the programmed cook count is reached for the

product in question. In Taco Bell stores, the SIB signals for a fi lter twice a day,

AM and PM. Th e AM fi lter is longer and prompted cleaning steps are displayed

during the fi lter.

Aft er a Yes response to a displayed fi lter request, the SIB signals the FIB to

open the drain, via the VIB, on the aff ected vat. Oil drains to the fi lter pan. Th e

SIB, through the VIB's probe, notes a drop in temperature in the vat. Th e SIB

signals the FIB and it starts the fi lter pump.

Th e steps of the fi lter cycle and prompts for cleaning are displayed on the

touchscreen. When the timed fi lter cycle is complete, the FIB signals the VIB to

close the drain and open the return. Oil is pumped back to the frypot.

Th e temperature and AIF probes, monitored by the SIB, look for the oil to leave the frypot and also

for its return. Th e screen asks if the frypot is full when the cycle is complete. Pressing Yes causes the

frypot to heat the oil to setpoint.

See Pin Outs on pages 5-19—5-30

Data and power fl ow can be seen in the schematics on pages 5-5, 5-6. Th e FIB signals for 24VDC to go

to the valve actuators and the top-off pump.

A second 24VDC power supply operates the communication system, which takes data gathered by

the SIB and sends it, via the SUI board, to a router provided by the store. Th e communication system is

shown on page 5-15

Touchscreen-Equipped Fryers

5-3

The FQ4000 conﬁ gured for Taco Bell calls for

ﬁ lter cycles in the morning and evening. The

morning ﬁ lter is longer and includes cleaning.

Actuators showing Fault on

the Component check screen

are likely not receiving power.

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