Computer Control - Older Controls - Vulcan-Hart GR Series Service Manual

GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND
COMPUTER CONTROL - OLDER
CONTROLS
Operation
Refer to Installation & Operations manual for specific
operating instructions.
Service Programming
The computer control's Service Programming mode is
used to perform system diagnostic tests or to edit
program items that affect the fryer's operation.
NOTE: If a product key is active (timing), Service
Programming cannot be entered.
Error Messages
For information on computer control error messages,
refer to COMPUTER CONTROL under
TROUBLESHOOTING.
Program Item
• Press 1 to view offset temperature. To
edit, enter the desired offset temperature
Temperature
(range 0 to 20°F).
Offset
• Press V to accept selection.
• Press Toggle key to select the direction of
the temperature offset (positive or
negative).
Melt Cycle On/
• Press 2 and set melt cycle on time.
Off Times
• Press Left or Right Timer arrow key and
set melt off time.
• Press 5 to enter diagnostic mode (outputs
Diagnostic
for heat, basket lifts, and cooking timers
Mode
turned off).
• Press 1 to toggle left basket lift output; left
basket lift lowers. LED toggles on/off.
• Press 2 to toggle right basket lift output;
right basket lift lowers. LED toggles on/off.
• Press and hold 3 to temporarily activate
heat demand (heat on); release to
deactivate heat demand (heat off). LED
toggles on/off.
• Press 5 to test drain valve interlock.
Change valve position (open/close) and
press 5 again to update display.
Drain valve closed.
Drain valve open.
ADJUSTMENTS
Key Sequence
7
1
Page 29 of 56
Enter Service Mode
1. Press V key, and enter password (default: 1972).
Use product key numbers (1 though 0) to enter
values.
A. "SERVICE" is displayed in the left window,
and the LED lamps above the product keys
1, 2, 4, 5, 6, 7, and 8 come on.
B. Beeper chirps on each successful key
press. If a key is not pressed within 2
minutes, the computer will automatically exit
Service Programming (except in diagnostic
mode).
2. To exit a Program item after making a selection,
press V to accept and return to Service
Programming.
3. To exit Service Programming and return to
operation mode, press V key twice.
LED Status
ON OFF
all OFF 00 F
POSITIVE OR
NEGATIVE
all MLTON:02
MLTOFF:13
5, 7 DIAGNOST
5, 7 L BASKET
5, 7 R BASKET
5, 7 HEAT DEM
5, 7
5, 7 DRN ON
7 5 DRN OFF
8
Display
Left Right
DEGREES
DEGREES
MELT ON
MELT OFF
DIAGNOST
L BASKET
R BASKET
HEAT DEM
DRN ON
DRN OFF
F35660 Rev. A (0717)