Champion W-DH Service Manual

Technical Manual

Hood Type Dishwasher

Model: W-DH

High Temperature with Built-in Booster

Machine Serial No.

March, 2003 Manual P/N 113365 Rev B

P.O. Box 4149 2674 N. Service Road Winston-Salem, North Carolina 27115-414 Jordan Station, Ontario, Canada L0R 1S0 336/661-1556 Fax: 336/661-1660 905/562-4195 Fax: 905/562-4618

www.championindustries.com

Complete the information below so it will be available for quick reference.

Model Number Serial Number

Voltage and Phase

Champion Service Agency Phone

Champion Parts Source Phone

Champion Service:

Champion (USA) Phone: 1 (336) 661-1556

1 (800) 858-4477

Fax: 1 (336) 661-1660 E-mail service@championindustries.com

We strongly recommend that you Fax or e-mail your orders.

NOTE: When calling to order parts, be sure to have the model number, serial number,

voltage and phase of your machine.

Machine Data Plate with model & serial number located on the front of the lower panel.

REVISION RECORD

Revision History

Revision Revised Serial Number Comments Date Pages Effectivity

09/01/01 — First issue of manual and replacement parts 06/10/02 3 Inserted electrical wiring diagrams. 3/28/03 16, 17 Inserted revised drawing and parts list.

TABLE OF CONTENTS

CONTENTS

Page

REVISION HISTORY .................................................................................................................... i

GENERAL....................................................................................................................................... 1

INSTALLATION ............................................................................................................................ 2

Unpacking........................................................................................................................... 2

Electrical Connections ........................................................................................................ 2

Plumbing Connections........................................................................................................ 4

Ventilation Connections ..................................................................................................... 4

Chemical Connections ........................................................................................................ 5

Completing Installation ...................................................................................................... 5

OPERATION................................................................................................................................... 6

MAINTENANCE ............................................................................................................................ 7

Daily Cleaning .................................................................................................................... 7

Maintenance........................................................................................................................ 7

TROUBLESHOOTING .................................................................................................................. 9

REPLACEMENT PARTS...............................................................................................................11

ELECTRICAL SCHEMATICS....................................................................................................... 23

LIST OF FIGURES

Figure 1— Front Panel..................................................................................................................... 2

Figure 2— Wiring Connection ........................................................................................................ 3

Figure 2— Wash Tank Assembly.................................................................................................... 12

Figure 3— Wash and Rinse Assemblies .......................................................................................... 14

Figure 4— Rinse Booster Assembly and Rinse System .................................................................. 16

Figure 5— Control Cabinet ............................................................................................................. 18

Figure 6— Control Panel ................................................................................................................. 20

iii

GENERAL SPECIFICATION

GENERAL SPECIFICATIONS

About this manual

All information, illustrations and specifications contained in this manual are based upon the latest product information available at the time of publication. Champion constantly improves its products and reserves the right to make changes at any time or to change specifications or design without notice and without incurring any obligation.

Organization of Manual

This manual is divided into seven parts:

• General Specifications

• Installation

• Daily Operation

• Cleaning and Maintenance

• Troubleshooting

• Replacement Parts, contains parts diagrams and parts list.

• Electrical Schematics

NOTE:

Unless noted otherwise, dimensions, capacities, temperatures, etc., given in this manual are U.S. Customary Measures and the Metric Equivalent of the U.S. Customary measures.

Model

The W-DH model is a high temperature (180F/82°C rinse) sanitizing model with booster.

Standard Equipment

• Automatic operation

• Built-in electric booster heater

• Field convertible to corner model

• Electric tank heat

• Extended wash/de-lime switch

• Low-water tank heat protection

• 1-hp drip-proof pump motor

• Splash-proof control console

• Door safety switch

• Common utility connections

• Detergent/chemical connection provisions

• Balanced door lift system

• Stainless steel front and side panels

• Interchangeable upper and lower spray arms

• International symbols on controls

INSTALLATION

Unpack the dishwasher

CAUTION:

Care should be taken when lifting the machine to prevent damage.

NOTE:

The installation of your machine must meet all applicable health and safety codes.

1. Immediately after unpacking the machine, inspect for any shipping damage. If damage is found, save the packing material and contact the carrier

immediately.

2. Remove the dishwasher from the skid. Move the machine to its permanent location.

3. Machine must be placed on a sound self-draining floor.

4. Level the machine (if required) by placing a level on the top of the machine and adjusting the feet. Level the machine from front-back and side to side.

5. Refer to Fig 1. Remove (2) screws that hold the front panel. Remove the front panel in preparation for service connections.

Figure 1

Remove Front Panel

Electrical Connections

WARNING:

Electrical grounding connections must comply with all applicable Electrical Codes.

WARNING:

When working on the dishwasher, disconnect the electric service and place a tag at the disconnect switch to indicate work is being done on that circuit.

1. A qualified electrician must compare the electrical power supply with the machine electrical specifications before connecting to the incoming service through a fused disconnect switch.

2. Recommended electrical supply is three phase, permanently wired via wall switch mounted adjacent to machine. Machine may also be installed on 25A single phase (15A single phase with reduced rinse heating). Easy on site conversion of standard machine for any of these requirements.

3. A knock out is provided at the lower right rear corner (as viewed from the front) for electrical service connection. A fused disconnect switch or circuit breaker (supplied by others) is required to protect the power supply circuit.

4. Remove (2) lower screws from the front panel of the machine to expose the electrical controls.

5. Three phase or single phase incoming wire connections are made at the bottom of the machine’s main terminal block. The main terminal block is located on the side of the front right post of the dishwasher.

SINGLE PHASE CONNECTION

INSTALLATION

Connect (1) Hot wire to either L1, L2 or L3

THREE PHASE CONNECTION

L2 L3

208/240V

L2 L3

Connect the second Hot wire to "N" terminal

NOTE: Remove Jumper wires for 3 phase applications.

Ground

Earth Ground

Ground

208/240V

Connect (3) Hot wires to L1, L2 and L3

Figure 2

Wiring Connections

208/240V

Connect the Neutral wire to "N" terminal

{

Earth Ground

INSTALLATION

INSTALLATION (CONT.)

Plumbing Connections

NOTE:

Plumbing connections must comply with all applicable sanitary and plumbing codes.

Water Connections

1. All W-DH dishwashers require a single, hot water supply.

2. The hot water connection to the dishwasher is 1/2” BSP male.

3. The connection is made from underneath the dishwasher.

4. The recommended minimum water temperature is 140F/60°C.

5. A manual shut-off valve for water (supplied by others) should be installed in the supply line to allow for servicing of the machine. The shut-off valve should be the same size or larger than the supply line.

6. Install a pressure reducing valve (PRV) in the water supply line if flow pressure exceeds 20-22 PSI/138-151.8kPa.

Drain Connections

1. The dishwasher is a gravity drain machine equipped with 1-1/2” O.D. hose connection point.

2. The maximum drain flow rate is 15 gallons/min-56.8 liters/min.

3. Drain height for the dishwasher must not exceed 11” (280mm) above the floor level.

4. The drain connection is made to the dishwasher from behind the machine or through an access hole in the base of the machine.

Ventilation

NOTE:

Ventilation must comply with local sanitary and plumbing codes.

CAUTION:

Exhaust air should not be vented into a wall, ceiling, or concealed space of a building. Condensation can cause damage.

INSTALLATION (CONT.)

Chemical Connections

NOTE:

Consult a qualified chemical supplier for your chemical needs.

1. A chemical signal terminal block is supplied for chemical dispensing equipment.

2. The terminal block is located below the control panel fuse block.

3. The detergent signal is limited to a maximum load of 1 Amp. Signal voltage is 115VAC.

4. The Rinse aid signal is limited to a maximum load of 1 Amp. Signal voltage is 115VAC.

5. The feeder units must have separate neutrals for detergent and rinse aid connections.

INSTALLATION

6. A 1/2” detergent injection point is provided at the rear and left side of the dishwasher.

7. Detergent may be added manually, put in three tablespoons of powdered domestic detergent into the wash tank after the machine has been filled, then add another tablespoon full after every fourth or fifth cycle. This is not recommended except in a temporary situation, ex: dispensing equipment is down, out of chemical and awaiting supplier, etc.

8. Rinse aid injectors can be purchased separately. There is a 1/4” NPT rinse aid injection point provided in the final rinse manifold. Use a liquid rinse aid. Contact your local chemical supplier about product type for factors such as water hardness etc.

Peristaltic Detergent Pump

To prime the peristaltic pump:

1. Insert pump inlet hose into the detergent container.

2. Close machine door and switch machine on.

3. Allow wash tank to fill up then press detergent pump prime switch to prime inlet and outlet hose.

4. Stop priming when detergent reaches machine.

Machine will not fill unless READY light is on and door is shut. Turn power off before opening door as machine will cycle again when door is closed. Pump operates during the wash cycle and is set to run for approximately 10 seconds. Use yellow adjusting tool, supplied with the instructions, to adjust cam 6 to vary this time. Increase cam gap (away from 0 mark) to increase pumping time.

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