Wells DABC-1PS Service Manual

DUAL ACCESS BISCUIT CABINET

WELLS MODELS DABC-1PS

and DABC-1TL

This equipment chapter is to be placed in the Holding Cabinets Section of the Equipment Manual.

MANUFACTURED EXCLUSIVELY FOR

McDONALD'S

BY

WELLS MANUFACTURING 2 ERIK CIRCLE VERDI, NEVADA 89439

PHONE: [phone] TOLL FREE: 1 [phone] FAX: [phone]

TABLE OF CONTENTS

WARRANTY........................................................................................................................ Page 2

INTRODUCTION................................................................................................................. Page 2

SAFETY................................................................................................................................ Page 2

PARTS IDENTIFICATION/FUNCTION/PHOTOS............................................................. Page 3

HARDWARE IDENTIFICATION........................................................................................Page 19

EQUIPMENT SET UP AND CLOSE PROCEDURES .................................................... Page 20

TROUBLESHOOTING...................................................................................................... Page 22

PARTS ORDERING/SERVICE INFORMATION............................................................. Page 24

NON-SCHEDULED MAINTENANCE .............................................................................. Page 24

WIRING PICTORIAL ......................................................................................................... Page 36

WIRING DIAGRAM ........................................................................................................... Page 38

This manual is for the exclusive use of licensees and employees of McDonald's Systems, Inc.

© 1987 McDonald's Corporation Printed in November Printed in All Rights

Reserved Reprinted in April, 1989 The United States of America

DUAL ACCESS BISCUIT CABINET

DABC

-

Models DABC-1PSP and DABC-1TL

PRODUCT FEATURES

• Fully adjustable water and air temperatures.

• Front and rear doors allow loading and unloading from
either end for efficient workflow.

• Adjustable solid-state electronic thermostat senses and
displays accurate temperature.

• Built-in three channel timer displays that can be operated
from both front and back of unit.

• Signal light located on both front and rear to indicate that
opposite door is open.

• Audible and visual low water indicator.

• Heat ON indicator lights for both air and water.

• LED digital temperature display (F or C) for air or water ­select by switch.

• Easy to clean water pan with one multi -function probe for
low water level and temperature.

• All stainless steel construction.

• Cabinet designed for floor installation. Shipped with
casters.

DIMENSIONS

MODEL

S

DABC-

1PSP

20 1/4"

INSTALLED SHIPPING

DIMENSIONS DIMENSIONS

W D H

29" 33" 175 27 3/8"

WEIGHT

W D H

33 3/4"

36

1/8”

WEIGHT

204

ELE CTRICAL INFORMATION
Model DABC-1PSP:

Voltage: 208V, three phase, four wire. Power: 1. 1 KW, for amperage
refer to table on reverse side. Cabinet is provided with a 10-foot cord
with pin-and-sleeve connector for power, and a 2-foot cord with pin-and­sleeve auxiliary receptacle for 15 amp, 120V unit only.

Model DABC-1TL: (Replacement only)
Voltage: 120V, single phase.
Power: 1. 1 KW, for amperage refer to table on reverse side. Cabinet is
provided with a 10-foot cord with a NEMA L5-20P twist-lock for power
and NO auxiliary appliance connection.

PRODUCT FINISH
Stainless steel top. front, sides and back.

PRODUCT WARRANTY
The DABC-1PSP and DABC-1TL Dual Access Biscuit Cabinets
manufactured by Wells are warranted to be free from defects in
materials and workmans hip for a period of one year from the date of
original installation and is for the benefit of the original purchaser only.
This warranty does not apply to damage resulting from fire, water,
burglary, accident, abuse, misuse, acts of God, faulty installation
including improper electrical supply.

THIS WARRANTY IS THE COMPLETE AND ONLY
WARRANTY, THERE BEING NO OTHER WARRANTIES,
EXPRESSED OR IMPLIED IN LAW OR IN FACT,
INCLUDING BUT NOT LIMITED TO, WARRANTIES OF
MERCHANT-ABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE, AND/OR FOR DIRECT,
INDIRECT. OR INCONSEQUENTIAL DAMAGES IN
CONNECTION WITH WELLS' PRODUCTS.

Wells' obligation under this warranty is limited to the repair of defects or
replacement without charge by a WELLS factory authorized service
agency or one of its sub-service agencies. This service will be provided
on customer's premises.

DUAL ACCESS BISCUIT CABINET

Models DABC-1PSP and DABC-1TL

MODEL VOLTS KW

DABC-1PSP

208

DABC-1TL 120 1. 1 - - - - 8. 8

NOTE: 4 WIRE 3 PHASE L3 NOT USED

Wells Manufacturing Company

2 Erik Circle, P. O. Box 280 • Verdi, NV 89439 [phone]

• FAX: [phone] TOLL-FREE FAX: [phone], for orders only

ELECTRICAL SPECIFICATIONS

AMPS PER LINE THREE PHASE

LI L2 L3 N

1. 1

10

15

AMPS

SINGLE

PHASE

-

1994 Wells Manufacturing Company Printed in U. S. A. Item No. 43958 B

25

-

WARRANTY STATEMENT

The Dual Access Biscuit Cabinet manufactured by Wells
is warranted to be free from defects in materials and
workmanship for a period of one year from the date of
original installation and is for the benefit of the original
purchaser only, BUT NOT AGAINST DAMAGE CAUSED
BY ABUSE, FAULTY INSTALLATION, INCLUDING IM­PROPER ELECTRICAL CURRENT. THIS WARRANTY
IS THE COMPLETE AND ONLY WARRANTY, THERE
BEING NO OTHER WARRANTIES, EXPRESSED OR
IMPLIED IN LAW OR IN FACT, INCLUDING BUT NOT
LIMITED TO, WARRANTIES OF MERCHANT ABILITY
OR FITNESS FOR ANY PARTICULAR PURPOSE,
AND/OR FOR DIRECT, INDIRECT OR CONSE­QUENTIAL DAMAGES IN CONNECTION WITH WELLS
PRODUCTS.

Wells' obligation under this warranty is limited to the
repair of defects or replacement without charge by a
WELLS factory authorized service agency or one of its
sub-service agencies. This service will be provided on
customer's request.

Please contact the Service Department: Wells
Manufacturing Company, P. O. Box 280, Verdi, Nevada
89439; to arrange service or for additional information
and other details concerning the product and/or this
warranty.

INTRODUCTION
The commercial Dual Access Biscuit Cabinet is designed

to hold food at a desired serving temperature and
moistness plus allow access to the food product from
either the front or the rear of the cabinet. Both models
have built-in 3 channel product timers that can be
activated from either the front or the rear of the cabinet.

The Model DABC-1 PS is configured with an IEC 309 Pin
& Sleeve plug and connector for the main power and
auxiliary device connection.

WARNING: The DABC-1 PS operates on 120 VAC. The
power connection has been designed for 208 VAC, 3­Phase-Y, 5-wire, 120/208 split, such that two
independent 120 VAC inputs are supplied to the unit.
The auxiliary connection is 120 VAC at 15 amp
maximum for other appliances, i. e. Marinator Model
MDMW-3.

The Model DABC-1TL is configured with a NEMA L5­20P twist-lock for the power supply connection and NO
auxiliary appliance connection is provided.

SAFETY

Knowledge of proper installation, operation and
maintenance procedures is essential to ensure safe
operation of any equipment. The instructions contained
herein are meant as guidelines; major considerations to
be kept in mind are:

1. Always have dry hands prior to turning the power
switch ON or OFF.

2. Turn OFF the power switch anytime the cabinet is
not in use.

3. If an electric shock is felt when touching the
cabinet, disconnect the power immediately and
call Wells Service Department for assistance and
service.

4. Have the electrical power installed by a licensed
electrician. Make sure that the equipment is
properly grounded.

5. If you find that the electrical cord is frayed, DO
NOT PLUG IT INTO THE ELECTRICAL POWER
RECEPTACLE. IF IT IS ALREADY PLUGGED IN,
DISCONNECT THE PLUG AFTER SHUTTING
OFF THE CIRCUIT BREAKER.

6. DISCONNECT THE POWER CORD BEFORE
ATTEMPTING ANY REPAIRS AND/OR
CLEANING THE UNIT WITH WATER.

7. Allow the unit to cool before cleaning.

8. DON'T EVER SPLASH WATER WITH A HOSE
OR OTHERWISE ONTO THE UNIT. WET
ELECTRICAL COMPONENTS AND WIRING
PRESENT A HIGH SHOCK HAZARD.

9. Follow the cleaning procedures described on the
Biscuit Cabinet (Wells) Planned Maintenance
System Card #64.

CAUTION: DO NOT OPERATE THE UNIT UNLESS
ALL FOUR CASTERS ARE INSTALLED. THE UNIT IS
SHIPPED WITH THE CASTERS IN PLACE AND THEY
SHOULD NOT BE REMOVED. PERSONAL INJURY
AND DAMAGE TO THE UNIT MAY RESULT.

2

PARTS IDENTIFICATION/FUNCTION/PHOTOS

(DABC-1PS Shown, DABC-1TL Same except as noted)

ITEM

PART

1 62385 Outer Cabinet Top 1 Covers and protects the controls, wiring and components.

2 63045 Front Door Handle 1

3 62391 Front Door Wrap 1 Provides an exterior cover for the cavity door assembly.

4 63042 Swivel Wheel with Brake 2

5 63425

NO.

DESCRIPTION QTY. FUNCTION

Provides access to the unit and secures the door when
closed.

Allows the unit to be moved about and secures it in place
when stationary.

Front Control Panel Sub­Assembly

1 Used to mount electrical control components.

3

ITEM

PART

NO.

6 63426

7 62370 Rear Door Wrap 1 Provides an exterior cover for the cavity door assembly.
8 63041 Ridged Wheel 2 Allows the unit to be moved about.

9 62389 Rear Door Handle 1 Provides access to the unit and secures the door closed.

DESCRIPTION QTY. FUNCTION

Rear Control Panel Sub­Assembly

1 Used to mount electrical control components.

4

ITEM

PART

NO.

DESCRIPTION QTY. FUNCTION

10 62405
11 62378 Electric Conversion Panel 1 Attaches plug/connector assemblies to the unit.

12 56307

13 62404
14 62384 Side Panel 2 Side cover of the unit. (1 per left and right side)
15 56313

56307

16 62412

60649 Plug L5-20P (DABC-1TL ONLY) 1

Cord Strain Relief DABC-1PS
DABC-1TL

Cord 14/3 STO (DABC-1PS
ONLY)

Female Connector (DABC-1PS
ONLY)

Cord 14/4 STO (DABC-1PS
ONLY)

Cord 14/3 STO (DABC-1TL
ONLY)

Plug 4-Wire P&S (DABC-1PS
ONLY)

2

Attaches cord to the conversion panel.

1

2 ft. Transfers electric power to secondary equipment,

Connects power to 120 VAC, 15 amp maximum secondary

1

equipment.

11 ft. Transfers electric power to the unit.

11 ft.

1 Connects the unit to the electrical power.

ITEM

17 62376

18 60787 Door Hinge 4

PART

NO.

DESCRIPTION QTY. FUNCTION

Blank Electrical Conversion
Panel

1 Opposite side cover for power conversion.

Mounts the doors to the cabinet and allows the doors to open
and close. (2 per front and rear door)

ITEM

19 63045 Front Door Striker Plate 1 Latches door to cabinet and houses the door ajar sensor.

PART

NO.

DESCRIPTION QTY. FUNCTION

20 63212 Tray Rack 2
21 60794 Crumb Shield 1 Prevents crumbs from falling into the water.

22 62373 Front Door Interior Panel 1 Secures the door gasket and protects the insulation.
23 60820 Front Door Gasket 1 Seal to retain the interior environment.

Holds biscuit tray. (1 for the left and 1 for the right sides of the
cavity)

7

ITEM

24 61776 Power On Switch 1 Turns the electrical power on or off to the unit.
25 60758 Power Telite (Red) 1 Indicates that the power is on to the unit.

26 60825 Rear Door Ajar Telite (L.E.D.) 1 Indicates when the front door is ajar.

PART

NO.

DESCRIPTION QTY. FUNCTION

27 62417 Timer Program Switch 1
28 62418 Timer Operate Switch 3 Starts and stops the internal product timer.

29 62411 Rear Door Gasket 1 Seal to retain the interior environment.
30 63206 Rear Door Interior Panel 1 Secures the door gasket and protects the insulation.

31 62364 Bottom Panel 2
32 62397 Rear Door Ajar Sensor 1 Detects when the rear door is closed or open.
33 62389 Rear Door Striker Plate 1

Programs the desired time into the internal product
timer.

Covers the front and rear lower frame members. ( 1 in
the front and 1 in the rear of the unit)

Latches door to cabinet and houses the door ajar
sensor.

8

ITEM

34* 60819

35* 60819

36 62392 Conduit Bushing 4

37 62393 Thermocouple Conduit 2

PART

NO.

DESCRIPTION QTY. FUNCTION

Front Door Insulation
(not shown)

Rear Door Insulation
(not shown)

1 Thermal seal for the front door.

1 Thermal seal for the rear door.

Guide for the front and rear thermocouple conduit. (2 each
door)

Conduit for the front and rear air thermocouple wires. (1
each, front and rear door)

38* 56315

*Not shown

Thermocouple Conduit
Insulation Tubing (not shown)

Abrasion barrier between the air sensor thermocouple wires

2

and the thermocouple conduit for the front and rear doors. (1
each front and rear door)

ITEM

39 62367 Front Door Air Sensor 1 Senses the air temperature inside the unit.
40 60789 Front Thermo Bracket 1 Protective guard for the air sensor.
41 62379 Front Air Probe Bracket 1 To hold biscuit oven probe.
42 62413 Rear Door Air Sensor 1 Senses the air temperature inside the unit.
43 60789 Rear Thermo Bracket 1 Protective guard for the air sensor.
44 62379 Rear Air Probe Bracket 1 To hold biscuit oven probe.

PART

NO.

DESCRIPTION QTY. FUNCTION

10

ITEM

45 62388 Front Door Ajar Sensor 1 Detects when the front door is closed or open.
46 63204 Cavity Assembly 1 Provides the interior surface of the unit.
47 62375 Air Heating Element 2 Heats the air within the cabinet. (1 each side)

48 60815
49 60807 Water Pan 1 Holds water for humidity.

50 60752 Element Clip 4 Holds the element in place. (2 clips per element)

51* 60799 Side Insulation (not shown) 2

PART

NO.

DESCRIPTION QTY. FUNCTION

Thermal/Low Water Sensor
Assembly

1 Senses temperature and water level within the water pan.

Thermal barrier for both sides of the cabinet, 1 piece per for
each side.

*Not shown

11

ITEM

52 60782 Outer Bottom Insulation 1 Thermal seal around the water pan.
53 62368 Base Rail 2 Base for the wheels to attach to. (1 per each side of the unit)
54 60751 Inner Bottom Insulation 1 Thermal seal around the water pan.
55 60527 High-Limit Water Thermostat 1

56 50002 Electrical Jumper 1
57 60768 Water Heating Element 1 Heats the water in the pan.
58 60810 Water Heater Element Retainer 1 Holds the water heating element in place.

PART

NO.

DESCRIPTION QTY. FUNCTION

Safety device which prevents excessive water pan
temperature.

Connects the water heating element to the high limit
thermostat.

59* 63044

*Not shown

Base Cover Assembly (not
shown)

1 Covers the water heating element and associated wiring.

12

ITEM

60 61056 Water Pan Gasket 1 Seals the water pan to the bottom of the cavity.
61 61030 Shoulder Washer 1 Water seal and upper sensor insulator.
62 61031 Washer 1 Water seal and lower sensor insulator.

PART

NO.

DESCRIPTION QTY. FUNCTION

SIDE VIEW (BOTTOM OF

CABINET)

CROSS SECTION A-A

13