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ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION
NOTE: Pins 1 and 2 on the main
harness are used to monitor the
power switch "status" of the vat(s).
Pin 1 is the power status input on a
full vat or right side split vat and pin 2
is the input for the left side split vat
only. These inputs tell the computer
which vat(s) are turned ON or OFF.
3.
Computer control evaluates input from
thermistor at pins 3 and 4 (full vat or right side
split vat).
NOTE: Pins 1 and 2 (left side split vat only) on
temperature probe harness.
A.
Computer control evaluates the input from
thermistor then activates the 24VAC
output from pin 15 and power is applied to
R2 control relay.
1)
R2 control relay is energized and the
N.O. contacts CLOSE.
a.
2CON and 4CON are energized
and heating elements are
powered.
NOTE: Pin 15 and 16 on the main
computer harness are the heat
outputs. Pin15 is the full vat or right
side split vat output and pin 16 is the
left side output on a split vat only.
4.
Oil temperature reaches set temperature.
A.
Computer turns OFF heat output and
control relay R2 de-energizes.
B.
2CON and 4CON are de-energized and
power is removed from heating elements.
5.
Computer cycles heat output on oil temperature
until power switch is turned OFF, heating
elements are raised or a high limit condition
occurs.
NOTE: Steps 5A and 5B discuss OPEN high limits.
For additional information on computer control error
messages, refer to "COMPUTER CONTROL
BOARD DIAGNOSTICS" under "SERVICE
PROCEDURES AND ADJUSTMENTS".
If the oil reaches 410 F ±5, the display will
A.
indicate "HI TEMP" as an alarm to the
operator only.
If the second high limit (435 F ±15)
B.
OPENS or the tilt switch operates, the
control relay R1 and contactors 1 thru 4
are de-energized.
1)
Power is removed form the heating
elements and heating stops.
F24696 (May 2001)
2)
NOTE: If the second high limit trips for the
left side split vat only, R3 and contactors 3
and 4 are de-energized. Power is removed
form the left side vat heating elements
only and heating stops. R3 contacts OPEN
and remove power from pin 2 ( left side
split vat only). The display will indicate
"OFF" for the left side vat.
NOTE: The filter valve handle and the discard valve
handle are connected to a mechanical valve and
switch assembly to route the flow of oil filtering
system and supply power to the pump motor.
Kleenscreen Filtering System
For Solid State Control, refer to schematic diagram
TSP1567C for both the "Fryer Controls" operation
and the "Kleenscreen Filtering system" operation.
For Computer Control, refer to schematic diagrams
TSP1571C for the "Fryer Controls" operation and
TSP1587C for the "Kleenscreen Filtering system"
operation.
1.
Conditions
A.
Fryer connected to correct supply voltage
(separate connections are required for
each section of the battery).
B.
Fryer properly grounded.
C.
Power switch to fryer section controls
turned OFF.
D.
Frying oil below 300°F.
E.
Filter drawer assembly installed properly.
F.
Filter power switch turned OFF.
G.
Filter valve handle (red) retracted.
1)
H.
Discard valve handle (white) retracted.
1)
2.
Set temperature control between 300°F
(minimum) and 350°F (maximum).
NOTE: Oil should not be filtered outside of this
temperature range. At lower temperatures the oil is
thicker which may increase filtering time and place a
greater load on the pump. At higher oil
temperatures, oil seal life is deceased.
3.
Turn the power switch ON, to the fryer section
to be filtered.
Page 12 of 56
R1 contacts OPEN and remove
power from pin 1 (full vat or right side
split vat). The display will indicate
"OFF".
Filter valve switch N.O. contacts
OPEN.
Discard valve switch N.O. contacts
OPEN.
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