Vulcan GPC12S Service Manual
SERVICE MANUAL
GPC SERIES GAS PASTA COOKERS
MODELS
GPC12 ML-126881
GPC12S ML-126883
GPC16 ML-126882
GPC16S ML-126884
– NOTICE –
This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly
qualified. If you have attended a Vulcan Service School for this product, you may be qualified to perform all the
procedures described in this manual.
This manual is not intended to be all encompassing. If you have not attended a Vulcan Service School for this product,
you should read, in its entirety, the repair procedure you wish to perform to determine if you have the necessary tools,
instruments and skills required to perform the procedure. Procedures for which you do not have the necessary tools,
instruments and skills should be performed by a trained Vulcan Service Technician.
Reproduction or other use of this Manual, without the express written consent of Vulcan, is prohibited.
For additional information on Vulcan-Hart Company or to locate an authorized
parts and service provider in your area, visit our website at www.vulcanhart.com
VULCAN-HART COMPANY, P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL. (502) 778-2791
FORM 31207 (April 2002)
TABLE OF CONTENTS
GENERAL .............................................................................................................................................................. 4
Introduction ............................................................................................................................................... 4
Installation ................................................................................................................................................ 4
Operation................................................................................................................................................... 4
Cleaning .................................................................................................................................................... 4
Lubrication................................................................................................................................................. 4
Specifications ........................................................................................................................................... 4
Electrical Data .................................................................................................................................... 4
Gas Data............................................................................................................................................. 4
Tools ......................................................................................................................................................... 4
Standard ............................................................................................................................................. 4
REMOVAL AND REPLACEMENT OF PARTS ..................................................................................................... 5
Covers and Panels ................................................................................................................................... 5
Cooker Control Panel ......................................................................................................................... 5
Rinse Station Control Panel ............................................................................................................... 5
Upper and Lower Lift Mechanism Panels .......................................................................................... 6
Control Panel Components ....................................................................................................................... 7
Indicator Light ..................................................................................................................................... 7
Rocker Switches ................................................................................................................................7
Optional Basket Lift Timer ................................................................................................................. 7
Relay ................................................................................................................................................... 8
Thermostat ......................................................................................................................................... 8
Water Fittings ..................................................................................................................................... 9
Control Box Housing ................................................................................................................................10
Gas Burners .............................................................................................................................................10
High Limit .................................................................................................................................................11
Burner Nozzle and Orifice .......................................................................................................................12
Pilot Ignitor Assembly .............................................................................................................................13
Gas Combination Valve ...........................................................................................................................14
Overflow Hoses ........................................................................................................................................15
Cooker Tank Hose .............................................................................................................................15
Rinse Tank Hose ...............................................................................................................................15
Doors ........................................................................................................................................................16
Optional Basket Lift Assembly................................................................................................................16
Lifting Rod and Bracket..................................................................................................................... 16
Cam ................................................................................................................................................... 17
Cam Switch .......................................................................................................................................17
Cam Arm and Motor ..........................................................................................................................17
Power Supply Box ...................................................................................................................................18
Power Supply Box Internal Components.................................................................................................19
Ignitor Module ....................................................................................................................................19
Transformer .......................................................................................................................................19
Cooker Tank .............................................................................................................................................20
Rinse Tank ...............................................................................................................................................21
© VULCAN-HART COMPANY, 2002
– 2 –
TABLE OF CONTENTS (Cont.)
SERVICE PROCEDURES AND ADJUSTMENTS ............................................................................................. 23
Gas Regulator Adjustment ..................................................................................................................... 23
Thermostat Calibration........................................................................................................................... 23
Optional Basket Lift Assembly ............................................................................................................... 24
Adjustment ....................................................................................................................................... 24
Timer Check ..................................................................................................................................... 24
Relay Check ..................................................................................................................................... 24
Micro Switch Check ......................................................................................................................... 24
Motor Check ..................................................................................................................................... 24
Transformer Check ................................................................................................................................25
High Limit Check .................................................................................................................................... 25
Verification of Spark at Ignitor ............................................................................................................... 25
ELECTRICAL OPERATION ................................................................................................................................26
Wiring Diagrams ..................................................................................................................................... 26
TROUBLESHOOTING ..........................................................................................................................................27
– 3 –
GENERAL
INTRODUCTION
Procedures in this manual will apply to all models
unless specified. Pictures and illustrations can be of
any model unless the picture or illustration needs to
be model-specific.
Models GPC12S and GPC16S are equipped with an
additional tank, which is plumbed to both hot and cold
water. Some models are equipped with an optional
basket lift.
INSTALLATION
Generally, installations are made by the dealer or
contracted by the dealer or owner. Detailed installation
instructions are included in the Installation and
Operation Manual, which is sent with each unit.
OPERATION
Detailed operation instructions are included with each
pasta cooker in the Installation and Operation manual.
Gas Data
ledoM sebuT.oN tupnIUTB htdiW
21CPG3 000,09511/2"
S21CPG3 000,09"13
61CPG4 000,021"12
S61CPG4 000,021"24
TOOLS
Standard
• Hand tools (standard set)
• VOM with AC current tester (any quality VOM
with a sensitivity of at least 20,000 ohms per
volt can be used)
• Temperature tester (thermocouple-type)
CLEANING
Detailed cleaning procedures are included in the
Installation and Operation Manual.
LUBRICATION
Motor bearings are sealed and prelubricated.
SPECIFICATIONS
Electrical Data
ledoM stloV ztreH esahP spmA
,S21CPG,21CPG
S61SPG,61CPG
021061 2.31
• Manometer
– 4 –
REMOVAL AND REPLACEMENT OF PARTS
COVERS AND PANELS
WARNING: DISCONNECT (UNPLUG) ELECTRICAL
POWER SUPPLY AND PLACE A TAG AT THE
DISCONNECT SWITCH INDICATING YOU ARE
WORKING ON THE CIRCUIT.
Cooker Control Panel
1. The control panel is secured with four hex
head screws, two on each side of the panel
and two under the flange. Remove these
screws.
3. Disconnect the main wire harness (two places)
and carefully remove the panel from the fryer.
4. Reverse the procedure to install.
Rinse Station Control Panel
WARNING: SHUT OFF WATER BEFORE
SERVICING.
2. Fold down the control panel.
1. The control panel is secured with four hex
head screws, two on each side of the panel
and two under the flange. Remove these
screws.
2. Lift the panel off.
– 5 –
3. Disconnect the water hoses and remove the
panel from the rinse station.
4. Reverse the procedure to install.
Upper and Lower Lift Mechanism Panels
WARNING: SHUT OFF THE GAS BEFORE
SERVICING.
WARNING: ALL GAS JOINTS DISTURBED DURING
SERVICING MUST BE CHECKED FOR LEAKS.
CHECK WITH SOAP AND WATER SOLUTION
(BUBBLES). DO NOT USE AN OPEN FLAME.
3. Remove hex head screws from the upper
panel.
4. Remove the head screws from the lower
panel.
1. Remove basket lift arm.
2. Disconnect tipping restraint. Disconnect gas
supply union at the rear of the pasta cooker.
5. Lift back up and over the lift mechanism.
6. Remove panel.
7. Reverse the procedure to reinstall panels.
– 6 –
CONTROL PANEL COMPONENTS
WARNING: DISCONNECT (UNPLUG) ELECTRICAL
POWER SUPPLY AND PLACE A TAG AT THE
DISCONNECT SWITCH INDICATING YOU ARE
WORKING ON THE CIRCUIT.
Indicator Light
1. Remove the cooker control panel as outlined
under Covers and Panels.
2. From the rear of the control panel, unscrew
the wire cap of the light to be replaced.
3. Press the tabs on both sides of the indicator
light being replaced and pull the light out
through the front of the panel.
Optional Basket Lift Timer
1. Remove the cooker control panel as outlined
under Covers and Panels.
2. Remove all the wiring associated with the
timer.
3. With an 1/8" Allen wrench, loosen the setscrew
and remove the knob.
4. Reverse the procedure to install indicator
light.
Rocker Switches
1. Remove the cooker control panel as outlined
under Covers and Panels.
2. Remove the wire leads from the rocker switch
terminals.
3. Press the tabs on both sides of the switch
and push it through the front of the control
panel. Retain the switch backup plate for
reassembly.
4. Reverse the procedure to install new rocker
switch.
4. Remove the timer mounting hardware and
remove the timer.
5. Reverse the procedure to install new timer.
– 7 –
Relay
1. Remove the cooker control panel as outlined
under Covers and Panels.
2. Remove all the wiring associated with the
relay.
3. Remove the two holding nuts and pull the
relay off of the panel.
4. Reverse the procedure to install new relay.
Thermostat
1. Drain all the water from the cooker tank.
5. Remove all the wiring associated with the
thermostat.
6. Follow the thermostat capillary to the packing
nut located on the bottom of the cooker tank.
7. Access to the packing nut can be gained
through the rinse station door on the right
side of the pasta cooker. Remove the packing
nut then remove the thermostat mounting
nut.
NOTE: If more room is required to reach the packing
nut, the right burner may be removed in front of the
cooker tank (see Gas Burners).
2. Remove the cooker control panel as outlined
under Covers and Panels.
3. Remove knob.
4. Remove the two screws securing the
thermostat to the panel.
– 8 –
8. Remove the thermostat bulb from the tank
mounting brackets.
9. Reverse the procedure to install new
thermostat.
Water Fittings
3. Disconnect the water hoses and remove the
control panel from the rinse station.
NOTE: When hose fittings are removed, inspect the
hose washers for cracking and wear. Replace with
new washers if needed.
4. Remove the two screws securing the water
fittings to the control panel and remove the
fittings.
WARNING: SHUT OFF WATER BEFORE
SERVICING.
1. Remove the rinse station control panel as
outlined under Covers and Panels.
2. With an 1/8" Allen wrench, loosen the
setscrews and remove the knobs.
5. Reverse the procedure to install new water
fittings.
– 9 –
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