APW Wyott CHDT-5 Service Manual
R
INSTALLATION
AND
OPERATING
INSTRUCTIONS
CHDT Series
Drop-In Hot & Cold Pans
Models: CHDT-2, CHDT-3, CHDT-4, CHDT-5 & CHDT-6
INTENDED FOR OTHER THAN HOUSEHOLD USE
RETAIN THIS MANUAL FOR FUTURE REFERENCE
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this manual for the life of the equipment. For
Warranty Service and/or Parts, this information is required.
Model Number Serial Number Date Purchased
WARNING: Improper installation, adjustment, alteration, service or maintenance can
cause property damage, injury or death. Read the Installation, Operating and
Maintenance Instructions thoroughly before installing or servicing this equipment.
This equipment has been engineered to provide you with year-round dependable service when used
according to the instructions in this manual and standard commercial kitchen practices.
!!
Phone: +1 (307) 634-5801
Fax: +1 (307) 637-8071
Toll Free: +1 (800) 752-0863
Website: www.apwwyott.com
E-mail: info@apwwyott.com
1
P/N 8802715 11/08
APW WYOTT
P.O. Box 1829
Cheyenne, WY 82003
APW Wyott takes pride in the design and quality of our products. When used as intended and with proper
care and maintenance, you will experience years of reliable operation from this equipment. To ensure best
results, it is important that you read and follow the instructions in this manual carefully.
Installation and start-up should be performed by a qualified installer who thoroughly read, understands and
follows these instruction.
If you have questions concerning the installation, operation, maintenance or service of this product, write
Technical Service Department APW/Wyott Foodservice Equipment Company, P.O. Box 1829, Cheyenne,
WY 82003.
SAFETY PRECAUTIONS
Before installing and operating this equipment be sure everyone involved in its operation are fully trained
and are aware of all precautions. Accidents and problems can result by a failure to follow fundamental rules
and precautions.
The following words and symbols, found in this manual, alert you to hazards to the operator, service
personnel or the equipment. The words are defined as follows:
DANGER: This symbol warns of imminent hazard which will result in serious injury or death.
!
X XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX X XX XX XX XX X
WARNING: This symbol refers to a potential hazard or unsafe practice, which could result in
!
serious injury or death.
CAUTION: This symbol refers to a potential hazard or unsafe practice, which may result in minor or
moderate injury or product or property damage.
!
NOTICE: This symbol refers to information that needs special attention or must be fully understood
even though not dangerous.
!
CAUTION: These models are designed, built, and sold for commercial use. If these models are
positioned so the general public can use the equipment make sure that cautions, warnings, and
!
operating instructions are clearly posted near each unit so that anyone using the equipment will
use it correctly and not injure themselves or harm the equipment.
WARNING: Check the data plate on this unit before installation. Connect the unit only to the voltage
!
& frequency listed on the data plate. Connect only to 1 phase with neutral as listed on the data plate.
!
!
!
!
!
!
NOTICE: The unit when installed, must be electrically grounded and comply with local codes, or in
the absence of local codes, with the national electrical code ANSI/NFPA70- latest edition.
!
Canadian installation must comply with CSA-STANDARD C.22.2 Number 0 M1982 General
Requirements-Canadian Electrical Code Part II, 109-M1981- Commercial Cooking Appliances.
NOTICE: Local codes regarding installation vary greatly from one area to another. The National
Fire Protection Association, Inc. states in its NFPA96 latest edition that local codes are “Authority
Having Jurisdiction” when it comes to requirement for installation of equipment. Therefore,
!
installation should comply with all local codes.
WARNING: Disconnect device from electrical power supply and place a Tag Out-Lockout on the
!
power plug, indicating that you are working on the circuit.
2
!
!
!
WARNING: Install per the spacing requirements listed in the installation section of this manual. We
strongly recommend having a competent professional install the equipment. A licensed electrician
should make the electrical connections and connect power to the unit. Local codes should always
!
be used when connecting these units to electrical power. In the absence of local codes, use the
latest version of the National Electrical Code.
!
CAUTION: Maintenance & repair should be handled by a factory authorized agent. Before doing
!
any maintenance or repair, contact APW Wyott.
WARNING: SHOCK HAZARD - Do not open any panels that require the use of tools.
!
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read the Installation, Operating and Maintenance Instructions
thoroughly before installing or servicing this equipment.
WARNING: Appliance must be connected by an earthing cable to all other units in the complete
!
installation and thence to an independent earth connection.
WARNING: Never clean any electrical unit by immersing it in water. Turn off before cleaning
!
surface.
WARNING: SHOCK HAZARD - De-energize all power to equipment before cleaning the
!
equipment.
!
!
!!
!
!
!
CONTENTS
Safety Precautions 2
Electrical Specifications 4
Features & Operating Controls 4
Precautions & General Information 5
Agency Listing Information 5
Installation 6
Operation 11
Cleaning Instructions 12
Troubleshooting Suggestions 13
Maintenance Instructions 14
Parts Lists & Exploded Views 16
Wiring Diagram 20
Warranty 23
LOCATION OF DATA PLATE:
The data plate for the Hot & Cold Pans is located on the right side of the control box.
IMMEDIATELY INSPECT FOR SHIPPING DAMAGE
All containers should be examined for damage before and during unloading. The freight carrier has
assumed responsibility for its safe transit and delivery. If equipment is received damaged, either apparent
or concealed, a claim must be made with the delivering carrier.
A) Apparent damage or loss must be noted on the freight bill at the time of delivery. It must then be signed
by the carrier representative (Driver). If this is not done, the carrier may refuse the claim. The carrier can
supply the necessary forms.
B) Concealed damage or loss if not apparent until after equipment is uncrated, a request for inspection
must be made to the carrier within 15 days. The carrier should arrange an inspection. Be certain to hold all
contents and packaging material.
Installation and start-up should be performed by a qualified installer who thoroughly read, understands and
follows these instructions.
3
ELECTRICAL SPECIFICATIONS
WARMER REFRIGERATION
POWER SUPPLY
MODEL VOLTS KW 1Φ AMPS HP VOLTS 1Φ AMPS REFRIGERANT
CHDT-2
CHDT-3
CHDT-4
CHDT-5
CHDT-6
240/208
60Hz
240/208
60Hz
240/208
60Hz
240/208
60Hz
240/208
60Hz
2.5/1.9
4.0/3.0
5.0/3.8
8.0/6/0
8.0/6.0
10.4/9.0
16.7/14.4
20.8/18.1
33.3/28.9
33.3/28.9
1/4
1/3
1/2
I i
3/4
3/4
120
60Hz
120
60Hz
120
60Hz
120
60Hz
120
60Hz
5.5
7.0
7.5
15.3
15.3
R-134a
#10 AWG min. 60°C
R-404a
#10 AWG min. 60°C
R-404a
#10 AWG min. 60°C
R-404a
#8 AWG min. 60°C
R-404a
#8 AWG min. 60°C
NOTE: For equipment and cut-out dimensions, refer to the Installation Instructions (pages 9 and 10).
FEATURES & OPERATING CONTROLS
REQUIREMENT
3-wire: L1, L2, N
3-wire: L1, L2, N
3-wire: L1, L2, N
3-wire: L1, L2, N
3-wire: L1, L2, N
Water Level Probes
(Inside Pan)
Autofill Backflow Preventer
Electrical Supply Inlet
Control Assembly
(Rotated 90° to show detail)
Water Supply Connection
Manual Reset Over-Temp Safety
NOTE: Reset is on bottom of
element and is accessible from
outside bottom of tank.
Temperature Control Hot Operation
NOTE: Model CHDT-3 shown. Others are similar.
Autofill
Tube
Autofill Tube
Connection
COLD OPERATION
Set selector to COLD position
Cold pan temperature factory set
Run until 30 minutes before adding
pre-chilled product
HOT OPERATION
Set selector to HOT position
Turn thermostat dial to desired
water bath position
Pan fills with water automatically
SWITCHING FROM HOT TO COLD OPERATION
Set selector to OFF position
Drain hot water and allow to cool
NEVER SELECT COLD OPERATION
WHEN WATER REMAINS IN PAN
APW Wyott, Cheyenne, WY
APW Wyott, Cheyenne, WY
R
R
COLD
8
10
0
4
1
0
OFF
02
Element Cover
HOT
OFF
CONTROL
PANEL
Pan Rail Support
Heating Element
A FL
I
R O
Indicator - Cold Operation
Selector - Cold - Off - Hot
Indicator - Hot Operation
Indicator - Heating
LCD Readout
“Set” Key
“ “ Key (Increase)
“ “ Key (Decrease)
REFRIGERATION
REFRIGERATION
TEMPERATURE
TEMPERATURE
CONTROL
CONTROL
Pan Rail (NSF 4 Position)
Pan Rail (NSF 7 Position)
Drain Screen
Drain
Drain Valve
Refrigeration Condenser
W
Refrigeration Temperature Control
88
SET
4
PRECAUTIONS AND GENERAL INFORMATION
WARNING: ELECTRIC SHOCK HAZARD. All servicing requiring access to non-insulated
electrical components must be performed by a factory authorized technician. DO NOT open any
!
This appliance is intended for use in commercial establishments only, and is intended to hold previously
prepared food for human consumption. Food may be held either hot or cold. No other use is recommended
or authorized by the manufacturer or its agents.
Operators of this appliance must be familiar with the appliance use, limitations and associated restrictions.
Operating instructions must be read and understood by all persons using or installing this appliance.
For hot operation, the appropriate water level must be maintained at all times. Food must be kept in
appropriate inserts. Never place food directly into the tank.
Cleanliness of this appliance is essential to good sanitation. Read and follow all included cleaning
instructions and schedules to ensure the safety of the food product.
access panel which requires the use of tools. Failure to follow this warning can result in severe
electrical shock.
CAUTION: RISK OF DAMAGE. DO NOT connect or energize this appliance until all installation
instructions are read and followed. Damage to the appliance will result if these instructions are not
!
followed.
CAUTION: HOT SURFACE. Exposed surfaces can be hot to the touch and may cause burns.
!
!
!
!
Disconnect this appliance from electrical power before performing any maintenance or servicing.
DO NOT submerge this appliance in water. This appliance is not jet stream approved. Do not direct water jet
or steam jet at this appliance, or at any control panel or wiring. Do not splash or pour water on, in or over any
controls, control panel or wiring. Do not wash floor around this appliance with water or steam jet.
Exposed surfaces of this appliance during hot operation can be hot to the touch and may cause burns.
Do not operate this appliance if the control panel is damaged. Call your Authorized Wells Service Agent for
service.
The technical content of this manual, including any wiring diagrams, schematics, parts breakdown
illustrations and/or adjustment procedures, is intended for use by qualified technical personnel.
Any procedure which requires the use of tools must be performed by a qualified technician.
This manual is considered to be a permanent part of the appliance. This manual and all supplied
instructions, diagrams, schematics, parts breakdown illustrations, notices and labels must remain with the
appliance if it is sold or moved to another location.
This appliance is made in the USA. Unless otherwise noted, this appliance has American sizes on all
hardware.
AGENCY LISTING INFORMATION
This appliance is performance tested to NSF Standard 4 for holding hot foods. This
appliance conforms to NSF Standard 4 for sanitation only if installed in accordance with the
supplied Installation Instructions and maintained according to the instructions in this
manual.
STD 4
This appliance performance tested to NSF Standard 7 for storage of potentially hazardous
foods. This appliance meets NSF Standard 7 only when pan rails are installed in the lowest
position.
Components used in the manufacture of this unit are Underwriters Laboratory recognized.
5
STD 7
INSTALLATION
CAUTION: This device should never be positioned upside down or on its side. If the unit arrived or
was stored in any position other than “THIS END UP” as marked on the shipping container, then
allow the unit to set upright 24 hours before applying power or turning on the unit. Failure to do this
!
will cause the unit to function incorrectly. The unit will not be able to cool to the desired temperature.
NOTE: DO NOT discard the carton or other packing materials until you have inspected the
appliance for hidden damage and tested it for proper operation. Refer to SHIPPING DAMAGE
!
CLAIM PROCEDURE on page 3 of this manual.
WARNING: RISK OF INJURY. Installation procedures must be performed by a qualified
technician with full knowledge of all applicable electrical and plumbing codes. Failure can result in
!
personal injury and property damage.
IMPORTANT: Unit must remain in an upright position during installation to prevent damage to the
!
refrigeration system.
IMPORTANT: Refrigeration system is air cooled. Recommend louvered grills or equivalent
openings on left and right side of condensing unit, with a minimum size of twice the condenser area
!
(each opening) in order to provide adequate air circulation.
IMPORTANT: DO NOT block air openings. Damage to the compressor will result. Damage caused
!
by improper air circulation is NOT covered by warranty.
IMPORTANT: Access is required for the operation of the drain valve and for maintenance of the
!
refrigeration unit. Provide adequate access to the drain valve and refrigeration unit.
!
!
!
!
!
!
!
UNPACKING & INSPECTION
Carefully remove the appliance from the carton. Remove all protective plastic film, packing materials and
accessories from the appliance before connecting electrical power or otherwise performing any installation
procedure.
Carefully read all instructions in this manual and the Installation Instruction Sheet packed with the
appliance before starting any installation.
Read and understand all labels and diagrams attached to the appliance.
Carefully account for all components and accessories before discarding packing materials. Store all
accessories in a convenient place for later use.
COMPONENTS
(2 Ea.) Pan Rail, Side (2 Ea.) Pan Rails, End
(1 - 5 Ea.) Pan Rails, Intermediate ( Qty Differs With Unit) (1 Ea.) Drain Screen
(1 Ea.) Backflow Preventer Assembly (1 Ea.) Drain Valve
PREPARATION
Cutout dimensions for tank units and control panels are listed on the Installation Instructions provided with
the unit.
Countertop must be flat and level before the unit is installed. After cutout is made, add stiffeners or bottom
braces to counter as required to support unit weight.
Provide louvered grills and service access below control panel.
Verify that provided sealants are applied to the underside of the top flange prior to setting the unit into the
cutout.
After installation, apply a thin bead of food-grade silicone sealant around the flange to seal it to the counter.
6
IMPORTANT: Unit flange must be sealed to the counter top. Damage caused by leaks due to
improper installation is NOT covered by warranty.
For installation in plastic (e.g. Corian®) counter tops, the counter material must be protected from
!
the heat of the warmer in order to prevent discoloration and/or deterioration. The installer should
contact the manufacturer or distributor of the countertop material for specific installation
instructions.
Avoid storing flammable or combustible materials in, on or near the appliance.
!
ELECTRICAL INSTALLATION
WARNING: ELECTRIC SHOCK HAZARD. All servicing requiring access to non insulated
electrical components must be performed by a factory authorized technician.
!
DO NOT open any access panel which requires the use of tools. Failure to follow this warning can
result in severe electrical shock.
CAUTION: RISK OF DAMAGE. DO NOT connect or energize this appliance until all installation
instructions are read and followed. Damage to the appliance will result if these instructions are not
!
followed.
CAUTION: ELECTRICAL SHOCK HAZARD. The ground lug of this appliance must be connected
!
to a suitable building ground.
IMPORTANT: Contact a licensed electrician to install and connect electrical power to the appliance.
!
IMPORTANT: Damage due to being connected to the wrong voltage or phase is NOT covered by
!
warranty.
1. Refer to the nameplate. Verify the electrical service power. Voltage and phase must match the
nameplate specifications. Wiring the unit to the wrong voltage can severely damage the unit or
cause noticeably decreased performance.
!
!
!
!
!
2. Available electrical service amperage must meet or exceed the specifications listed on the
specification sheet provided with the unit. Connect to the terminal block in the control unit. Wiring
must be secured to the control unit with an appropriate strain relief (provided by installer).
IMPORTANT:
* L1 to L2 must be 208 to 240 volts AC.
* L2 to Neutral must be 120 volts AC
3. Tank and control unit must be connected to an appropriate building ground. Ground connection will
be marked “GND” or “ G” .
NOTE: Wire gauge, insulation type and temperature rating , as well as type, size and construction of
conduit, must meet or exceed applicable specifications of local codes and of the National Electrical
Code.
PLUMBING INSTALLATION
IMPORTANT: All plumbing installations must be performed by a qualified plumber.
NOTE: Plumb connections must be made in compliance with all Federal, State and Local Plumbing
Codes and Ordinances.
NOTE: All water line connections are made OUTSIDE of the control unit.
1. Install provided 1" drain valve on unit drain. Plumb to an appropriate waste as required by local
plumbing and sanitation ordinances.
7
2. Install provided backflow preventer assembly to the tank water inlet. Attach water outlet tubing from
water connection (located on bottom left of control unit) to the inlet of the backflow preventer.
NOTE: While a backflow preventer is incorporated into the unit, local codes may require an
additional backflow preventer or vacuum breaker in the water inlet line.
3. The unit must be connected to a potable cold water supply line with average pressure between 20
PSI and 90 PSI. If your water pressure exceeds 90 PSI at anytime, a pressure regulator must be
installed in the water supply line to limit the pressure to not more than 90 PSI in order to avoid
damage to lines and solenoid. Install water supply to inlet fitting (located on left side of control unit)
with a 1/4" female flare.
4. A water shut-off valve should be installed on the incoming water line in a convenient location (Use a
low restriction type valve, such as a 1/4-turn ball valve, to avoid loss of water flow thru the valve.
5. Test the operation of the autofill in the HOT operation mode.
8
Loading...