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Service Manual

SUBWAY FRONT COUNTERS

Please read this manual completely before attempting

to install, operate or service this equipment

This document is prepared for trained Duke service technicians. It is not to be used by anyone not
properly qualiﬁ ed to perform these procedures.

This Service Manual is not all encompassing. If you have not been trained on servicing this product,
be sure to read the manual completely before attempting servicing. Be sure all necessary tools, test
equipment, and skills are available. Those procedures for which you do not have the proper skills
and test equipment must be performed only by a qualiﬁ ed Duke trained service technician.

This manual is Copyright © 2007 Duke Manufacturing Co. All rights reserved.

Reproduction without written permission is prohibited. Duke is a registered

trademark of the Duke Manufacturing Co.

Duke Manufacturing Co.

2305 N. Broadway

St. Louis, MO 63102

Phone: 314-231-1130

Toll Free: 1-800-735-3853

Fax: 314-231-2460

www.dukemfg.com

P/N 219206A

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Содержание SUB-GP-L

Страница 1: ...e manual completely before attempting servicing Be sure all necessary tools test equipment and skills are available Those procedures for which you do not have the proper skills and test equipment must...

Страница 2: ...BLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE WARNING DO NOT OPERATE THIS EQUIPMENT WITHOUT PROPERLY PLACING AND SECURING ALL COVER AND ACCESS PANELS CAUTION Observe the followi...

Страница 3: ...T FOOD UNIT 15 In nite Switch 15 Indicator Lamp 16 Heat Element 16 Capacitor 17 PURSE RAIL REPLACEMENT 17 DAYCOVER 19 Daycover Bulb Gasket 19 Gas Damper and Gas Shock Replacement 20 End Glass Tri Chan...

Страница 4: ...INUED SERVICE INFORMATION 33 Duke Service Bulletin 26 33 Refrigeration System Evacuation Process 33 TROUBLESHOOTING PROCEDURES 34 Troubleshooting Guide 34 Tri Channel Step One Troubleshooting Guide 35...

Страница 5: ...VOLTAGE AMPS PHASE SUB GP L Left to Right Tri Channel Cold Pan 120 VAC 60 Hz 220 VAC 50 Hz 7 9 4 4 1 1 SUB GP R Right to Left Tri Channel Cold Pan 120 VAC 60 Hz 220 VAC 50 Hz 7 9 4 4 1 1 SUB HF L Lef...

Страница 6: ...ions should be performed by a certi ed electrician and should comply with local electrical codes for your municipality The Tri Channel Cold Pan is pre wired with a NEMA 5 15 cord The Hot Food Unit is...

Страница 7: ...th curved glass these screws fasten the glass extrusion to the top of the front counter Loosen the screws above only one panel at a time 4 Lift up on the D cor Panel and pull the bottom of the panel a...

Страница 8: ...nifold and copper tube with foil tape 14 Install split insulation onto the manifold make sure the copper tube is exposed where it extends beyond the manifold to allow for new Thermostat Bulb insertion...

Страница 9: ...mounting brackets 6 Install the replacement Digital Thermostat NOTICE Do not kink Digital Thermostat probes 7 Install the Digital Thermostat probes onto the Evaporator Coil 8 Refer to the tags to rec...

Страница 10: ...et see the illustration above Un brazed Suction Line 6 Un brazetheSuctionLinefromtheCompressor see the illustration above NOTICE Care should be given to support the Condensing unit once out of the cag...

Страница 11: ...ed Capillary Tube 18 SecuretheCapillarytubingtotheVaportubing closest to the Accumulator This is necessary to allow the Courtesy Loop to extend out for future service Capacitor WARNING THE POWER MUST...

Страница 12: ...enser Cooling Fan WARNING THE POWER MUST BE TURNED OFF AND DISCONNECTED AT ALL TIMES DURING MAINTENANCE OR REPAIR FUNCTIONS Location of Condenser Cooling Fan The Condenser Cooling Fan is located in th...

Страница 13: ...5 Remove expansion valve and evaporator tubing from refrigeration assembly 6 Remove Refrigeration Assembly mounting hardware 7 Tag and disconnect wiring at Junction Box 8 Slide out Refrigeration Asse...

Страница 14: ...is now ready to receive refrigerant charge according to information on data plate CAUTION Never use oxygen or acetylene in place of dry nitrogen or refrigerant for leak testing A violent explosion ma...

Страница 15: ...and disconnect the unit from its power source Control Box Removed 2 Remove the 5 screws that secure the Control Box to the operator s side of the unit 3 Remove the 4 nuts that secure the Control Panel...

Страница 16: ...ontrol Box 4 DisconnecttheIndicatorLampwiringfromthe Thermostat 5 Remove the Indicator Lamp assembly which is held in place by crimp springs 6 Reverse this procedure to install a new Indicator Lamp He...

Страница 17: ...the unit 4 Tag and disconnect the wires connected to the Capacitor 5 Remove the faulty Capacitor 6 Reversethisproceduretoinstallareplacement Capacitor Capacitor Connected to Thermostat PURSE RAIL REP...

Страница 18: ...a piece of cardboard near each of the Light Cover mounting screws and remove the screws with the 5 16 nut driver 11 Remove the LightAssembly from the Purse Rail 12 Turn the D cor Panel over face down...

Страница 19: ...ED AT ALL TIMES DURING MAINTENANCE OR REPAIR FUNCTIONS Location of Daycover Gasket The Daycover Gasket is located on the operator s side of the Daycover and provides a seal when the Daycover is in the...

Страница 20: ...lower the Door to is fully closed position 2 Ensure that the Gas Damper or Gas Shock to be replaced is in extended position Gas Damper or Gas Shock Cap Opened 3 Using a at head screwdriver pry the Ga...

Страница 21: ...olds the piston in place Properly Installed Gas Dampers and Gas Shocks End Glass Tri Channel Unit WARNING THE POWER MUST BE TURNED OFF AND DISCONNECTED AT ALL TIMES DURING MAINTENANCE OR REPAIR FUNCTI...

Страница 22: ...k and inspect the End Glass Kit 2 Ensure that the Thermostat is in OFF position and disconnect unit from its power source 3 Remove and discard old glass gaskets and extrusion Extrusion Line up with ho...

Страница 23: ...2 Remove the End Glass from both sides of the Daycover Door that requires replacement Refer to END GLASS TRI CHANNEL replacement instructions in the PARTS REPLACEMENT section of this manual Fixed Glas...

Страница 24: ...S REPLACEMENT section of this manual 17 Ensure Daycover Door opens and closes properly Daycover Light WARNING THE POWER MUST BE TURNED OFF AND DISCONNECTED AT ALL TIMES DURING MAINTENANCE OR REPAIR FU...

Страница 25: ...mage Repair WARNING THE POWER MUST BE TURNED OFF AND DISCONNECTED AT ALL TIMES DURING MAINTENANCE OR REPAIR FUNCTIONS Additional reinforcement is required in case of corner damage to the Daycover Door...

Страница 26: ...LL 10 Use the 10 24 tap provided with the kit to tap the holes 11 Place the correct right or left bracket over the holes 12 Cover at least three full threads of each screw with the Loctite provided in...

Страница 27: ...ve the D cor Panel from the customer side of the unit Location of Daycover Mounting Bolts 3 Remove the 3 bolts from each end Pylon 4 Lift one of the Daycovers enough to expose the electrical connectio...

Страница 28: ...wire through Press the Grommet into position in the side hole 14 Attach a Grommet to the wire where it exits the top hole and press it into position 15 Remove the Front Filler from the side of the Pyl...

Страница 29: ...r is heavy a minimum of two people are required to lift it 6 Remove the Daycover 7 Reverse this procedure to install the new Daycover Daycover Retrofit Replacement Hot Food Unit WARNING THE POWER MUST...

Страница 30: ...available cut the terminal off the wire A new terminal will have to be installed if this method is used 14 Using an Extraction Tool remove the terminal from the end of the lamp wiring the extends out...

Страница 31: ...tains chloride For routine cleaning use warm water mild soap or detergent and a sponge or soft cloth For heavy duty cleaning use warm water a degreaser and a plastic stainless steel or Scotch Brite pa...

Страница 32: ...nt Cover Removed The condenser coil is located in and accessed to the front of the unit A vent cover protects the condenser from damage The condenser coil requires regular cleaning and should be done...

Страница 33: ...ry nitrogen if dry nitrogen is unavailable use the same type of refrigerant as used in the system Evacuate system to 1500 microns Break the vacuum to 2 psig with dry nitrogen if dry nitrogen is unavai...

Страница 34: ...or lter Find leak repair and recharge Cabinet too cold Thermostat set too high Thermostat switch is stuck in the closed position Set thermostat to a lower number for a warmer temperature Replace therm...

Страница 35: ...IAA or M4FL 0033 IAZ or M4FL 0040 IAZ circle one Condensing unit Serial ________________________ Thermostat setting ____________________ Voltage being delivered to the unit __________ Amperage _______...

Страница 36: ...TEP ONE TROUBLE SHOOTING GUIDE Condition Possible Cause Corrective Action All rail temperatures above 38 F High ambient temperature Improper air balance in the building Dirty condenser Correct restaur...

Страница 37: ...5 230 psi at 80 F 26 7 C and the above symptoms still exist the capillary drier assembly should be replaced Tri Channel Coolant Leak Testing This procedure tests for leaks on the suction side of the u...

Страница 38: ...Service Manual for Subway Front Counters 38 SCHEMATIC DIAGRAMS TRI CHANNEL HOT FOOD...

Страница 39: ...39 Service Manual for Subway Front Counters NOTES...

Страница 40: ...Service Manual for Subway Front Counters 40 Duke Manufacturing Co 2305 N Broadway St Louis MO 63102 Phone 314 231 1130 Toll Free 1 800 735 3853 Fax 314 231 2460 www dukemfg com P N 219206A...

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