Pitco SGH50 Handbuch Seite 7

controller for continuity.
•If display reads "Prob" "HI", ohm test the temperature
probe and the wires and connectors between the probe
and controller for a short.
•If display reads "drn" "tUrn" "oFF", verify that the drain
valve is closed, check the proximity switch on the drain
valve.
Primary Solid State Control:
Note: All controller test points are at connector P/J3 (the
12 pin connector at the controller).
•24 VAC is supplied to the controller at pin #1(24VAC
supply) and pin # 5 (24 VAC input from DVI),
•With the controller turned on, there will be a 24 VDC
output at pin #9 (side on) and the green indicator will be
illuminated.
•When the controller calls for heat, there will be a 24 VDC
output at pin #8 (heat demand), the yellow indicator on
the left will be illuminated and there will be a 24 VAC input
at pin #6 (heat feed back).
•When the controller receives the 24 VAC input at pin #6,
the yellow indicator on the right will illuminate. If the con-
troller does not receive the 24 VAC input at pin #6, the
indicator will not illuminate. This would indicate a break in
the heat demand or heat feed back circuit.
1. Check the hi-limit switch (is it open or tripped).
2. Check the ignition module (sensing pilot flame,
locked out, 24 VAC at MV terminal).
3. Check the heat demand relay (H.D.) on the relay
board (is heat demand relay energized, continuity
through COM and NO contacts).
•If the green indicator and the yellow indicator on the left
come on and shut off when the controller is turned on, that
indicates an open or shorted probe or wires in between
the probe and the controller.
•If none of the indicators illuminate when the controller is
turned on, verify that the drain valve is closed and that the
magnetic proximity switch has continuity when the drain
valve is closed. Also verify that there is 24 VAC at pin #1
(24 VAC supply) and pin #5 (24 VAC input from DVI).
Backup Solid State Control:
The backup solid state control works the same as the pri-
mary solid state control, with the exception of the 24 VAC
supply passing through the solid state backup transfer
switch to the computer or solid state digital control.
If the transfer switch is set to backup or if the backup
controller has been unplugged, the primary controller will
not work. The jumper must be installed on the relay board
(connection J33) to allow the primary controller to func-
tion if the backup controller is removed.
Optional Basket Lift:
•The basket lift is a self contained unit that requires a 120,
208 or 240V supply. With most fryer configurations, the
power is supplied from the entrance box at the back of the
fryer but some cofigurations will require power direct from
a wall outlet.
•When supply voltage is applied to the basket lift assem-
bly, it goes through a voltage selector switch to a multi tap
24V, 80VA transformer. The transformer supplies 24 VAC
to the driver board at connection J54.
Note: When power is supplied to basket lift assembly, the
baskets will lift to the up position.
•When a timer is activated, it will send a 24 VDC signal to
pin #1 (24 VDC+) at connector J51 on the driver board.
The driver board will generate a 24 VDC output at J53 to
the basket lift motor, lowering the basket.
Note: For the purpose of testing, jumping pins #1 and #2
at connection J5 on the driver board will simulate a 24
VDC signal from the controller, lowering the basket.
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L22-235 Rev 0 (04/03)