Moyer Diebel 201HT M4, 201LT M4 Operation Manual

Installation/Operation Manual with Service Replacement Parts

Undercounter Dishwashers

M4 Series

201HT
High Temperature Wash
Refresh with built-in booster
and Pumped Final Rinse

201HT

201LT
Low Temperature Chemical
Sanitization Wash Refresh
with Pumped Final Rinse

201LT

3765 Champion Blvd.,
Winston-Salem, NC 27105
[phone] Fax: [phone]
Toll-free: [phone]

Issue Date: 7.17.15

Manual P/N 115743 rev. _

For machines beginning with S/N W150350341 and above

2674 N. Service Road, Jordan Station
Ontario, Canada L0R 1S0
[phone] Fax: [phone]
Toll-free: [phone]

Printed in the USA

For future reference, record your dishwasher information in the box below.

Model Number__________________________ Serial Number_______________________

Voltage________________Hertz_____________ Phase__________________

Service Agent __________________________________ Tel:______________________

Parts Distributor _________________________________ Tel:______________________

National Service Department

In Canada:
Toll-free: [phone]
Tel: [phone]
Fax: [phone]
email: [e-mail]

The model no., serial no., voltage, Hz

and phase are needed to identify your

machine and to answer questions.

Please have this information ready

ATTENTION:

The machine data plate is located

on the lower front panel.

if you call for service assistance.

The USGBC and the CaGBC Member Logos are trademarks owned by the U.S. Green Building Council and The Canadian Green

Building Council, respectively, and are used by permission. The logos signify only that Champion is a USGBC member and a

CaGBC member; USGBC and CaGBC do not review, certify nor endorse the products or services offered by its members.

COPYRIGHT © 2015 All rights reserved Printed in the USA

PRODUCT REGISTRATION

ONLINE

Connect to the internet and enter the URL below to
register your machine.

IN CANADA:

http://www.championindustries.com/canada/register

PRODUCT REGISTRATION

BY FAX

COMPLETE THIS FORM AND FAX TO:

[phone] in the USA

1 [phone] in Canada

PRODUCT REGISTRATION CARD

Model

Date of Installation:
Company Name:

Address:
Telephone #: ( ) ---

(Street)

Serial #

State

or Province

Zip or

Postal Code

Contact:

Installation Company:
Address:
Telephone #:
Contact:

FAILURE TO REGISTER YOUR PRODUCT MAY VOID YOUR WARRANTY

IMPORTANT IMPORTANT

Revision History

Revision History

A revision might be a part number change, a new instruction, or other information that was
not available at print time. We reserve the right to make changes to these instructions without
notice and without incurring any liability by making the changes. Equipment owners may
request a revised manual, at no charge, by calling 1 [phone] in the USA or by
calling 1 [phone] in Canada.

Revision Revised Serial Number Revision
Date Pages Effectivity Description

7.9.15 --- W150350341 Released First 201HT Edition
W150350281 Released FIrst 201LT Edition

i

Limited Warranty

Limited Warranty

LIMITED WARRANTY

Moyer Diebel. (herein referred to as The Company), 3765 Champion Blvd., Winston-Salem, North Carolina 27105, and P.O.
Box 301, 2674 N. Service Road, Jordan Station, Canada, L0R 1S0, warrants machines, and parts, as set out below.

Warranty of Machines: The Company warrants all new machines of its manufacture bearing the name "Moyer Diebel"

and installed within the United States and Canada to be free from defects in material and workmanship for a period of one (1)
year after the date of installation or fifteen (15) months after the date of shipment by The Company, whichever occurs first. [See
below for special provisions relating to glasswashers.] Warranty registration must be submitted to Moyer Diebel within ten (10)
days after installation either online on the Moyer Diebel website (http://www.moyerdiebel.com/register/) in the USA or
http://www.championindustries.com/canada/register in Canada or by fax on the form provided at the front of this manual.
If warranty registration is not returned to The Company within such period, the warranty will expire after one year from the
date of shipment. The Company will not assume any responsibility for extra costs for installation in any area where there are
jurisdictional problems with local trades or unions. If a defect in workmanship or material is found to exist within the warranty
period, The Company, at its election, will either repair or replace the defective machine or accept return of the machine for full
credit; provided; however, as to glasswashers, The Company's obligation with respect to labor associated with any repairs
shall end (a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event that Moyer Diebel
elects to repair, the labor and work to be performed in connection with the warranty shall be done during regular working hours
by The Company's authorized service technician. Defective parts become the property of The Company. Use of replacement
parts not authorized by The Company will relieve The Company of all further liability in connection with its warranty. In no event
will The Company's warranty obligation exceed The Company's charge for the machine. The following are not covered by The
Company's warranty:

a. Lighting of gas pilots or burners.
b. Cleaning of gas lines.
c. Replacement of fuses or resetting of overload breakers.
d. Adjustment of thermostats.
e. Adjustment of clutches.
f. Opening or closing of utility supply valves or switching of electrical supply current.
g. Cleaning of valves, strainers, screens, nozzles, or spray pipes.
h. Performance of regular maintenance and cleaning as outlined in operator’s guide.
i. Damages resulting from water conditions, accidents, alterations, improper use, abuse,
tampering, improper installation, or failure to follow maintenance and operation procedures.
j. Wear on Pulper cutter blocks, pulse vanes, and auger brush.

Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior or interior finish
as a result of the above, (2) Use with utility service other than that designated on the rating plate, (3) Improper connection to
utility service, (4) Inadequate or excessive water pressure, (5) Corrosion from chemicals dispensed in excess of recommended
concentrations, (6) Failure of electrical components due to connection of chemical dispensing equipment installed by others, (7)
Leaks or damage resulting from such leaks caused by the installer, including those at machine table connections or by connection
of chemical dispensing equipment installed by others, (8) Failure to comply with local building codes, (9) Damage caused by
labor dispute.

Warranty of Parts: The Company warrants all new machine parts produced or authorized by The Company to be free from
defects in material and workmanship for a period of 90 days from date of invoice. If any defect in material and workmanship is
found to exist within the warranty period The Company will replace the defective part without charge.

DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. THE COMPANY'S WARRANTY
IS ONLY TO THE EXTENT REFLECTED ABOVE. THE COMPANY MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED, TO ANY WARRANTY OF MERCHANTABILITY,
OR FITNESS OF PURPOSE. MOYER DIEBEL SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSE­QUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE THE EXCLUSIVE REMEDIES FOR ANY
DEFECTS FOUND TO EXIST IN THE COMPANY'S DISHWASHING MACHINES AND THE COMPANY'S
PARTS, AND ALL OTHER REMEDIES ARE EXCLUDED, INCLUDING ANY LIABILITY FOR INCIDENTALS
OR CONSEQUENTIAL DAMAGES.

Moyer Diebel does not authorize any other person, including persons who deal in Moyer Diebel dishwashing machines to change this warranty
or create any other obligation in connection with Moyer Diebel Dishwashing Machines.

ii

Table of Contents

Table of Contents

ModelS 201HT, 201LT

Revision History
Limited Warranty

........................................................................................................ i

...................................................................................................... ii

Installation - Model 201HT ..................................................................... 1

Receiving - 201HT .................................................................................................. 1

Placement - 201HT ................................................................................................. 1

Water Connections - 201HT .................................................................................... 2

Drain Connections - 201HT ..................................................................................... 3

Electrical Connections 201HT 1 Phase w/o Booster - 201HT ....................................... 6

Electrical Connections 201HT 1 and 3 PH Wiring Diagrams - 201HT ........................... 7

Connecting Incoming Power to the Main Terminal Block (1 and 3 PH) - 201HT .............. 8

Booster Heater Conversion from 1 to 3 PH - 201HT .................................................. 11

Booster Fill Switch - (Filling the booster for the first time) - 201HT ................................. 14

Chemical Connections - 201HT .............................................................................. 16

Pumps and Injection Points - Detergent and Rinse-aid Dispensing Pumps - 201HT ................... 17

Pump Priming - Detergent and Rinse-aid Dispensing Pumps - 201HT............................ 19

Fill Adjustments - Detergent and Rinse-aid Dispensing Pumps - 201HT ................................... 21

Operation - Model 201HT ................................................................................. 22

Loading Dish Racks - 201HT ................................................................................. 22

Normal Wash Mode - 201HT ............................................................................... 24

Scrub Mode - 201HT ........................................................................................... 25

Rinse Sentry Mode - 201HT .................................................................................. 26

Drain Mode - 201HT ........................................................................................... 26

Cleaning - Model 201HT ....................................................................... 28

Cleaning the Wash Tank - 201HT ........................................................................... 28

Cleaning the Wash Arms - 201HT .......................................................................... 29

Cleaning Scrap Screen and Sump Strainer - 201HT..................................................31

De-liming - Model 201HT ...................................................................................... 32

Maintenance - Model 201HT .................................................................. 34

Daily, Weekly, Monthly ........................................................................................ 34

(continued on next page)

iii

Table of Contents

Table of Contents

Model 201LT

Installation - Model 201LT...................................................................... 37

Receiving - 201LT ................................................................................................. 37

Placement - 201LT ................................................................................................ 37

Single Phase Electrical Connections - 201LT ............................................................. 38

Water Connections - 201LT .................................................................................... 39

Drain Connections - 201LT ..................................................................................... 40

Pumps and Injection Points - Detergent and Rinse-aid Dispensing Pumps - 201LT .................... 42

Pump Priming - Detergent and Rinse-aid Dispensing Pumps - 201LT ............................. 44

Fill Adjustments - Detergent and Rinse-aid Dispensing Pumps - 201LT ..................................... 45

Operation - Model 201LT .................................................................................. 46

Loading Dish Racks - 201LT .................................................................................. 46

Normal Wash Mode - 201LT ................................................................................ 47

Vari-Cycle Mode - 201LT ...................................................................................... 48

Drain Mode - 201LT ............................................................................................. 49

Cleaning - Model 201LT ........................................................................ 50

Cleaning the Wash Tank - 201LT ............................................................................50

Cleaning the Wash Arms - 201LT ...........................................................................50

Cleaning Scrap Screen and Sump Strainer - 201LT ................................................... 51

De-liming - Models 201LT ......................................................................................52

Maintenance - Model 201LT ................................................................... 54

Daily, Weekly, Monthly ........................................................................................ 54

Troubleshooting - Models 201HT, 201LT .............................................................. 57

Service Replacement Part - Models 201HT, 201LT .......................................... 69

Electrical Schematics - Models 201HT, 201LT ................................................ 107

Timing Charts - Models 201HT, 201LT

................................................................. 110

iv

Receiving and Placement - Installation

Counter-top

Wall

3" [8cm] Min.

34"

[86cm]

Min.

Floor

Receiving - 201HT

NOTE:

The installation of your dishwasher must be performed by qualified service personnel familiar
with food service equipment and must comply with all local health codes.
Problems due to improper installation are not covered by the Limited Warranty.

NOTE:

The installation of the dishwasher must comply with all local electrical, plumbing, health and
safety codes or in the absence of local codes, installed in accordance with the applicable
requirements in the National Electrical Code, NFPA 70, Canadian Electrical Code (CEC),
Part 1, CSA C22.1; and the Standard for Ventilation Control and Fire Protection of
Commercial Cooking Operations, NFPA 96.

Placement - 201HT

CAUTION:

Be careful when lifting and moving the dishwasher to prevent damage to the machine.

1. Inspect the outside of the dishwasher carton for signs of damage.

2. Remove the carton and inspect the dishwasher for damage.

3. Check for any options or accessories that may have shipped with your dishwasher.

4. Compare the installation site utility connections with the dishwasher utility connections
and make sure they are the same.

5. The dishwasher can be installed as a free-standing unit or under a counter-top.
The typical counter-top height in most locations is 34" [86cm].

6. It is highly recommended that the
underside of the counter-top be clad
in metal.

7. Under counter installations should
provide storage space for the
dishwasher chemical supply
containers. Do not elevate the
containers above the finished floor.

8. Chemical supply containers should
be placed as close to the machine as
possible and the chemical tubing
taped to the back of the machine
should be repositioned before
permanently placing the machine.

9. Place the dishwasher in its permanent
location.

10. The dishwasher has 4 adjustable feet
for leveling.

11. Level the dishwasher front-to-back and side-to-side.

1

Installation - 201HT

Water Connections - 201HT

NOTE:

The installation of your dishwasher must be performed by qualified service personnel familiar
with food service equipment. Problems due to improper installation are not covered by the
Limited Warranty.

The installation of the dishwasher must comply with all local electrical, plumbing, health and
safety codes or in the absence of local codes, installed in accordance with the applicable
requirements in the National Electrical Code, NFPA 70, Canadian Electrical Code (CEC),
Part 1, CSA C22.1; and the Standard for Ventilation Control and Fire Protection of
Commercial Cooking Operations, NFPA 96.

! CAUTION !
Plumbing connections must be made BEFORE the electrical installaion is performed.
Damage to the machine's water heaters will occur if the power is turned on to the
machine without an adequate water supply.

! ATTENTION !
It is the installing plumber's responsibility to flush the incoming line to remove debris
before connecting to the dishwasher. Failure to do so may void the machine warranty.

1. All models have a 6 ft. flexible hot water fill hose with a 3/4" female garden hose connector.

2. A 1/2" or larger main incoming supply line must be installed to the dishwasher.

3. A 1/2" or larger shut-off valve should be installed in the main water supply, as close to the
dishwasher as possible for servicing.

The 201HT without booster has a built-in flow control. The flowing incoming hot water supply

pressure must be between 25-95 psi. The hot water supply must provide a minimum of
180°F/82°C, measured at the dishwasher.

The 201HT with booster has a built-in flow control. The flowing incoming hot water supply
pressure must be between 25-95 psi. The hot water supply must provide a minimum of
140°F/60°C, measured at the dishwasher for 40°F/22°C rise booster or 110°F/43°C for
70°F/39°C rise booster.

4. A water hardness of 3 grains/gal (US) [5.3 mg/L] or less is recommended. Excessively hard
water may need a water softener or other means of water treatment to prevent lime build-up.

2

201HT - Installation

Drain Connections - 201HT

! VERY IMPORTANT !

Do not connect the drain hose to a disposer. The dishwasher will not drain correctly.

Refer to the photo below.

1. All models are equipped with a 6 ft.. 5/8" I.D. drain hose. The maximum drain
height connection must not exceed 3 ft.[1 m] and must be vented to prevent
the wash tank from siphoning.

2. The drain hose is located at the rear of the dishwasher, and is secured to the rear of
the machine by two clamps to maintain an anti-siphoning loop in the drain hose.

3. A 3/4" hose barb fitting is strapped to the drain hose prior to shipment.
The service part number for the hose barb is P/N 0512321.

4. Additional plumbing parts must be supplied by the plumbing installer.

5. The maximum drain flow is 15 US gpm/12.4 imp gpm/60 lpm.

! ATTENTION !

FAILURE TO FOLLOW THE DRAIN CONNECTION INSTRUCTIONS MAY VOID THE WARRANTY.

DO NOT REMOVE HOSE CLAMPS

NOR STRETCH HOSE

3/4" DRAIN HOSE BARB FITTING

STRAPPED TO DRAIN HOSE

3

Installation - 201HT

Drain Connection - 201HT (continued)

DO NOT REMOVE THE CLAMPS HOLDING THE DRAIN HOSE TO THE

BACK OF THE DISHWASHER.

DO NOT CONNECT THE DRAIN HOSE TO A DISPOSER.

DO NOT REDUCE THE SIZE OF THE DRAIN HOSE CONNECTION NOR USE A DOMESTIC

DRAIN FITTING.

DO NOT ADD ADDITIONAL LENGTH TO THE DRAIN HOSE.

DO NOT ALLOW THE DRAIN HOSE TO KINK.

For a Direct Drain Connection:

1. Install the drain hose to an 1-1/2" or larger vented "WYE" drain fitting.

2. CONNECTION TO A "TEE" FITTING WILL PREVENT THE DISHWASHER FROM
DRAINING COMPLETELY.

Drain Hose

Clamp

(Supplied by others)

3/4" NPT Hose Barb

Fitting

Drain
Adapter
Fitting

WYE
Fitting

DO

connect the dishwasher flexible drain

hose to a vented WYE drain fitting.

4

DO NOT

connect the dishwasher flexible

drain hose to a TEE drain fitting.

201HT - Installation

Drain Connection - 201HT

For an Indirect Drain Connection:

1. A 1" [25.4mm] minimum air gap must be provided between the outlet of the dishwasher
drain hose and the flood-level rim of the floor drain, floor sink or any other locally
approved drain receptacle. (See illustration below.)

Dishwasher
Drain Hose

Minimum
Air Gap
1” [25.4mm]

Floor

Floor Drain

! VERY IMPORTANT !

IMPROPER INSTALLATION OF MACHINE DRAIN HOSE.

Machine drain problems are often the result of improper installation and may not

be covered by the limited warranty.

5

Installation - 201HT

L1 N

115VAC

15A

4 ft. power cord w/plug supplied

SINGLE PHASE POWER CONNECTION

Model 201HT

without Booster

Electrical Connections - 201HT 1PH without Built-in Booster

WARNING:
Electrocution or serious injury may result when working on an
energized circuit.

Disconnect power at the main breaker or service disconnect switch
before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to
indicate that work is being performed on the circuit.

Refer to the connection diagram below for single a phase machine without a built-in booster.

1. A three prong 4 foot power cord and plug is prewired with the machine for connection to a
115VAC power source.

201HT models without a built-in booster are equipped with a 4 ft. power cord and plug. These

models require a 115VAC,15A receptacle.

A qualified electrician must connect the main incoming power to the dishwasher in

accordance with all local codes and regulations or in the absence of local codes in

accordance with the National Electrical Code or the Canadian Electrical Code.

6

! ATTENTION !

! ATTENTION !

201HT - Installation

L1 L2 L3 N

208-230

VAC

0 VAC

0 VAC

115VAC

GRD

SINGLE PHASE POWER CONNECTION

Model 201HT with Booster

Do not connect power to L3

HOW TO CONNECT 1 PHASE POWER

! VERY IMPORTANT !

1. Check the data plate on the front of the

dishwasher for the phase of the machine.

.

2. Remove the lower access panel.

3. Pull power connection box forward and out.

4. The Main Terminal Block has connections

for L1, L2, L3, Neutral and Ground.

5. Connect ground, then connect

L1, L2 to 208-230VAC.

6. Connect a current carrying neutral to N.

7. Main Power connections are complete.

If the data plate says the machine is 1 Phase,

then connect a 1 PH power supply.

DO NOT CONNECT POWER TO L3.

THE ELECTRICAL POWER MUST BE A

3-WIRE PLUS GROUND SUPPLY WHICH

INCLUDES A CURRENT CARRYING NEUTRAL.

Electrical Connections - 201HT with Built-in Booster

1PH and 3PH Wiring Diagrams

! ATTENTION !

ALL DISHWASHERS ARE SHIPPED FROM THE FACTORY WIRED FOR SINGLE PHASE

OPERATION UNLESS SPECIFIED AT THE TIME OF ORDER.

IF YOU ARE CONVERTING A SINGLE PHASE MACHINE TO THREE PHASE BE SURE

TO FOLLOW THE BOOSTER WIRING INSTRUCTIONS ON PAGES 11-13.

THREE PHASE POWER CONNECTION

Model 201HT with Booster

GRD

L1 L2 L3 N

INCLUDES A CURRENT CARRYING NEUTRAL.

HOW TO CONNECT 3 PHASE POWER

1. Check the data plate on the front of the

dishwasher for the phase of the machine.

If the data plate says the machine is 3 Phase,

.

2. Remove the lower access panel.

3. Pull power connection box forward and out.

4. The Main Terminal Block has terminals for

L1, L2, L3, Neutral and Ground.

5. Connect ground, then connect

L1, L2, L3 to 208-230VAC.

6. Connect a current carrying neutral to N.

7. Main power connections are complete.

THE ELECTRICAL POWER MUST BE A

4-WIRE PLUS GROUND SUPPLY WHICH

then connect a 3 PH power supply.

208-230

VAC

208-230

VAC

208-230 VAC

! VERY IMPORTANT !

115VAC

7

Installation - 201HT

Connecting Incoming Power to the Main Terminal Block
for 1PH and 3PH Machines with Boosters- 201HT

WARNING:
Electrocution or serious injury may result when working on an
energized circuit.

Disconnect power at the main breaker or service disconnect switch
before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to
indicate that work is being performed on the circuit.

! VERY IMPORTANT !

PROVIDE A 3 FEET/1 METER SERVICE LOOP IN THE POWER SUPPLY

CABLE TO SERVICE THE DISHWASHER.

! SINGLE PHASE POWER REQUIREMENT !

SINGLE PHASE 201HT

The electrical power must be a 3-wire plus ground supply which

includes a current carrying neutral.

! THREE PHASE POWER REQUIREMENT !

THREE PHASE 201HT

The electrical power must be a 4-wire plus ground supply which

includes a current carrying neutral.

8

201HT - Installation

Connecting Incoming Power to the Main Terminal Block

for 1PH and 3PH Machines with Boosters- 201HT

Refer to the photo below:

1. Remove the lower front dishwasher panel.

2. Remove the retaining fasteners (A) from the swing-out brackets and swing the chemical
pump bracket (B) and the chemical circuit board bracket (C) out of the way as shown.

(continued on next page)

A

B

C

A

Main Terminal Block Cover

9

Installation - 201HT

Connecting Incoming Power to the Main Terminal Block
for 1PH and 3PH Machines with Boosters

(continued from previous page)

Refer to the photo below:

3. Provide a 3 foot/1 meter service loop in the power supply cable to service the machine

4. Route the power cable from the rear of the machine to the terminal block making sure
the cable does not touch the booster tank.

5. Connect the power cable to the terminal block bracket using a suitable strain relief
connector.

6. Connect the power wires according to the wiring diagrams on page 3 for either
single phase or three phase operation.

7. Swing the chemical pump bracket and the chemical board back into position and
secure with the existing fasteners.

Main Terminal Block Cover Main Terminal Block

10

201HT - Installation

Booster Heater Conversion from 1PH to 3 PH Operation

! VERY IMPORTANT !

THE BOOSTER HEATER IS WIRED FOR 1PH OPERATION WHEN SHIPPED.

FOLLOW THE INSTRUCTIONS BELOW TO WIRE THE BOOSTER FOR 3PH.

WARNING:
Electrocution or serious injury may result when working on an
energized circuit.

Disconnect power at the main breaker or service disconnect switch
before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to
indicate that work is being performed on the circuit.

1. To convert the booster heater from single phase to three phase operation, locate the
booster wire labeled 1H3 that is cable-tied to the booster hose.

2. Remove the shrink insulation from the terminal and connect to the booster heater
element as shown in the wiring diagram on page 7.

The three phase booster wire (1H3) is cable-tied to the hose adjacent to the booster tank.

11

Installation - 201HT

Booster Heater Conversion from 1PH to 3 PH Operation (continued)

! VERY IMPORTANT !

THE BOOSTER HEATER IS WIRED FOR 1PH OPERATION WHEN SHIPPED.
FOLLOW THE INSTRUCTIONS BELOW TO WIRE THE BOOSTER FOR 3PH.

3. Disconnect the existing booster heater wires and change the booster heater element

jumpers as shown in the illustration below

4. Connect wires 1H1, 1H2, and 1H3 as shown below.

Booster Heater

Connected for 1PH

Wire not

connected

1H2

1H1

1H3

1H3

Wiring Diagram - Booster heater element connections shown for 1 phase and 3 phase operation.

Booster Heater

Connected for 3PH

1H1

1H2

5. A replacement 3PH data plate is stowed on the back of the lower front access panel.

6. Replace the existing 1PH data plate on the front of the panel with the new 3PH data plate.

Discard the 1PH data plate.

7. Refer to the instructions on page 3 to connect the main incoming power to the

machine.

12

201HT - Installation

Completing the 1PH to 3PH Electrical Conversion

! ATTENTION !

CHANGE THE DATA PLATE ON THE LOWER FRONT PANEL OF THE MACHINE

AFTER THE MACHINE IS WIRED FOR 3PH AND THE BOOSTER HEATER IS CONNECTED

FOR 3PH.

1. The data plate on the dishwasher lower front panel must be changed after the

machine is converted from single phase operation to three phase operation.

2. Locate the replacement data plate stowed on the back of the lower front panel.

3. Remove the paper backing from the label and carefully place it over the existing

data plate label making sure it covers the label completely.

4 Re-install the lower front panel to complete the conversion.

A three phase data plate is located on the back of the lower front panel.

13

Installation - 201HT

Booster Fill Switch - 201HT
(Filling the booster tank for the first time)

! CAUTION !

AVOID PERMANENT DAMAGE TO THE BOOSTER HEATER

DO NOT TURN THE DISHWASHER POWER SWITCH

ON WHEN FILLING THE BOOSTER FOR THE FIRST TIME.

THE BUILT-IN BOOSTER TANK WAS DRAINED BEFORE SHIPMENT AND

MUST BE REFILLED BEFORE OPERATING THE DISHWASHER.

THE BOOSTER FILL SWITCH IS LOCATED BEHIND THE LOWER FRONT PANEL ON THE

RIGHT SIDE OF THE MACHINE.

To refill the booster for the first time:

1. Turn the main breaker or disconnect switch to the dishwasher ON.

2. DO NOT PUSH THE DISHWASHER ON-OFF/DRAIN POWER SWITCH TO THE ON POSITION.

3. Locate the booster fill switch and note the switch is in the OFF position.

(continued on next page)

1

14

201HT - Installation

Booster Fill Switch - 201HT

(Filling the booster tank for the first time)

4. PUSH AND HOLD the booster fill switch in the FILL position until water starts filling
inside the wash compartment.

5. Release the FILL switch.

2

6. PUSH the booster fill switch to the ON position and release.

7. The booster fill operation is complete.

8. Replace the lower front panel on the machine.

3

15

Installation - 201HT

Chemical Connections - 201HT

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT.

PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE.

DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier must

adjust the chemical dispensing pumps for water hardness and food soil types.

Chemical Dispensing Pumps

1. The detergent and rinse-aid pumps are located on the lower left-side of the machine
behind the lower-front access panel.

2. Each pump is equipped with 6 feet [1.8 m] of pick-up tubes consisting of supply tubing,
stiffener tubes, and strainers.

3. The pick-up tubes are stowed on the back of the machine for shipping.

4. A red label marked DETERGENT and a blue label marked RINSE-AID identify the
chemical lines.

RINSE-AID

DETERGENT

The 201HT pumps are located on

the left-side behind the lower front panel

16

of the dishwasher.

201HT - Installation

Detergent and Rinse-aid Pumps and Injection Points - 201HT

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT.

PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE.

DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

Injection Point Locations

1. For 201HT, the detergent and rinse-aid enter the wash tank compartment
through a fitting on back right corner of the wash compartment.

201HT

DETERGENT

and

RINSE-AID

INJECTION

POINT

(continued on next page)

17

Blank Page

This Page

Intentionally

Left Blank

18

201HT - Installation

Detergent and Rinse-aid Pumps and Injection Points - 201HT

Priming the Dispensing Pumps

! VERY IMPORTANT !

The chemical dispensing pumps must be primed before operating the dishwasher and

whenever the chemical container is changed.

201HT Control Panel

1. The chemical dispensing pump supply lines must be primed before they will pump the
chemicals properly.

2. Make sure the chemical containers are full and the correct pick-up tubes are in their
containers.

3. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher
will fill with water.

4. Open the dishwasher door, then push
and hold the prime push button UP to the
DETERGENT position until detergent is
observed entering the wash tank compartment
through the fitting located on the back right
corner of the tank. Release the push button.

5. Push and hold the prime push button DOWN
to the Rinse-aid position until you see air
bubbles moving through the rinse-aid tubing
coming out of the chemical container. Release
the push button.

6. Close the door to complete the priming operation.

DETERGENT

RINSE AID

PRIME

(continued on next page)

19

Installation - 201HT

Detergent and Rinse-aid Pumps and Injection Points - 201HT

! ATTENTION !

The amount of dispensed chemical is determined by the run time of the dispensing pump.

Refer to the photo below:

1. The chemical dispensing pump run and the tank fill adjustment screws are located on the

end of the chemical circuit board swing-out bracket.

2. It is not necessary to swing the bracket out to make adjustments, but if desired, remove
the mounting nut (A) and swing the bracket (B) out and to the right.

3. Refer to the next page for adjustment instructions.

! VERY IMPORTANT !

INSPECT & REPLACE THE CHEMICAL DISPENSING PUMP SQUEEZE TUBES EVERY SIX MONTHS.

A

B

B

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The

chemical supplier must adjust the chemical dispensing pumps for water

hardness and food soil types.

20

Detergent and Rinse-aid Pumps and Injection Points - 201HT

Refer to the photo below:

To adjust the amount of chemicals dispensed
by the pumps:

1. Make sure the chemical containers are full and
the pick-up tubes are in their proper containers.

3. Turn the dishwasher power switch ON.
The switch will illuminate and the dishwasher
will fill with water.

4. Run a normal dishwasher cycle and test
detergent and rinse-aid concentrations
according to the chemical supplier's
instructions.

201HT - Installation

CAUTION:
Excessive pressure to the potentiometers when
adjusting can result in bent or broken adjusting
screws.

5. Each dispensing pump has a clearly marked
adjustment screw. Turn the screw CW to
increase the run time of the dispensing pump
and CCW to reduce the run time.

Fill Adjustments

To adjust the tank fill:

1. The fill adjustment screw will provide a
small change in the tank water level.

2. If a large adjustment is needed, check the
incoming water pressure and make sure the fill
hose is not kinked.

3. If the above items are okay then the size
of the incoming water supply should be
checked. The incoming water supply line must
be a minimum of 1/2" or larger.

Use a 4mm

blade

screwdriver

Fill Adjustment

For 201HT

21

Operation - 201HT

Operation - 201HT

Loading Dish Racks

! VERY IMPORTANT !

DO NOT OVERLOAD THE DISH RACK.

LOAD ONE DISH RACK INTO THE MACHINE AT A TIME.

1. Prescrap and rinse the wares before loading to remove large food particles.

2. Load soiled wares into the dish rack. Place plates and glasses in a peg rack. Place
cups and bowls in a flat bottom rack. Place utensils in a single layer in a flat-bottom rack.
Place pots and pans in a flat-bottom rack.

Do not overload the dish rack. Wash one dish rack at a time.

3. Slide one dish rack into the wash compartment making sure that wares do not interfere
with the rotating spray arms. Do not wash more than one dish rack at a time.

Prescrap and rinse wares before

loading into the machine.

Load plates and glasses in a peg

rack.

22

201HT - Operation

Loading Dish Racks (continued)

Load pots and pans in a

flat-bottom rack.

Load utensils in a single layer in a

flat-bottom rack.

Load cups and bowls in a

flat-bottom rack.

NEVER stack dish racks.

Wash one dish rack at a time.

23

Operation - 201HT

Operation - 201HT

Normal Wash Mode

201HT Control Panel

ON-OFF/DRAIN

Power Switch

Wash Temperature

Digital Display

Final Rinse Temperature

Digital Display

Prime

Push button

1. Close the dishwasher front door.

2. Push the dishwasher Power Switch UP to turn the power ON.

3. The power switch will illuminate and the machine will fill with water.

4. Wait until the wash temperature gauge indicates a minimum of 150ºF/66ºC.

PLACE AN EMPTY DISHRACK IN THE MACHINE AND RUN THE FIRST
CYCLE EMPTY TO HEAT THE WASH TANK INTERIOR.

5. Load the dish rack into the machine. Wash one dish rack at a time.

Scrub

Delime

Pushbutton

In-cycle Light Start

Push button

6. Close the door, then press the START BUTTON for 1 second. The green in-cycle
light will illuminate and the wash cycle will begin. The total cycle is approximately
141 seconds.

7. Opening the door during a cycle will stop the dishwasher. If the door is open more than 5
seconds the cycle will restart from the beginning, if open less than 5 seconds the cycle
will resume where it left off when the dishwasher door is closed.

8. The final rinse cycle begins at the end of the wash cycle. The machine drains and then
refills with fresh water hot water. Check the rinse temperature gauge during the final rinse.
It must indicate a minimum of 180-195ºF/82-91ºC. The final rinse water is retained
for the next wash cycle.

9. When the green cycle light goes out, open the door and remove the rack of clean wares.

! ATTENTION !

DOOR LEFT OPEN DURING WASH CYCLE

If the dishwasher door is left open for more than 5 seconds during the normal wash mode, then

the dishwasher cycle will reset to the beginning of the normal wash cycle.

! ATTENTION !

RINSE SENTRY MODE WILL EXTEND WASH CYCLE TIME

In the event that the final rinse temperature has not reached 180-195ºF/82-91ºC after the

wash cycle, the rinse sentry will extend the wash cycle time until the booster reaches

180-195ºF/82-91ºC. If the proper temperature is not reached within 5 minutes, the machine

will leave the rinse sentry mode and complete the cycle.

24

Operation - 201HT

Scrub Mode - 201HT

The Scrub Mode is used to wash heavily soiled items such as pots, pans and other wares that
require more washing time than the standard Normal Wash Mode.
The dishwasher will remain in the Scrub Mode until the operator exits the mode
or 15 minutes has elapsed.

1. Load a dish rack into the dishwasher, close the door and press the START button.

2. The green in-cycle light will illuminate and the dishwasher will begin a normal wash cycle.

3. Wait 10 seconds for the detergent to enter the wash compartment before pressing the
SCRUB button.

Press the Scrub/Delime button to place the

machine into the extended wash mode to

clean heavily soiled wares.

SCRUB

D E L I M E

4. Press the SCRUB button to place the dishwasher in the Scrub Mode.

5. The green extended wash light will illuminate indicating that the machine is in the
Scrub Mode.

6. The dishwasher will continue to wash for a maximum of 15 minutes or until the operator
presses the SCRUB button again whichever occurs first.

7. Press the SCRUB button. The green extended wash light will go out indicating that
the dishwasher has returned to the Normal Wash Mode.

8. The dishwasher will finish the wash cycle and perform a final rinse of the wares.

25

Operation - 201HT

Rinse Sentry Mode - 201HT

! ATTENTION !

DOOR LEFT OPEN DURING WASH CYCLE

If the dishwasher door is left open for more than 5 seconds during the normal wash mode, then

the dishwasher cycle will reset to the beginning of the normal wash cycle.

! ATTENTION !

RINSE SENTRY MODE WILL EXTEND WASH CYCLE TIME

In the event that the final rinse temperature has not reached 180-195ºF/82-91ºC after the

wash cycle, the rinse sentry will extend the wash cycle time until the booster reaches

180-195ºF/82-91ºC. If the proper temperature is not reached within 5 minutes, the machine

will leave the rinse sentry mode and complete the cycle.

Drain Mode

The dishwasher will enter the drain mode whenever the Power Switch is pushed down to the
OFF/DRAIN position.

(DRAIN)

POWER

Place the Power Switch in the OFF/(DRAIN) position

26

(continued on next page)

201HT - Operation

201HT - Operation

Drain Mode (continued)

1. Push the illuminated power switch down to the OFF/(DRAIN) position.
The power switch light will go out.

2. The cycle light will illuminate and the machine will drain.

3. The machine, will flush, perform 3 short drain cycles and then drain completely.

4. The cycle light will go out indicating that the drain cycle is complete. Do not open
the door until the light goes out.

! VERY IMPORTANT !

Draining Problems Related To Improper Installation.

Problems with draining are often the result of improper installation. The drain hose

is looped and clamped as shown in the photo below and must not be changed.

The drain hose is looped and
clamped and must not be
changed. Altering the drain
hose routing may result in the
machine's inability to drain
or may cause the machine to
siphon the water out of the
machine.

27

Cleaning - 201HT

Cleaning - 201HT

! VERY IMPORTANT !

DRAIN AND CLEAN THE DISHWASHER EVERY 2 HOURS OF CONTINUOUS

OPERATION, AFTER EACH MEAL PERIOD, AND AT THE END OF THE DAY.

Cleaning the wash tank:

1. Remove the upper and lower spray arms and flush clean in a sink.

2. Remove the scrap screen taking care that debris does not fall off the screen and into the
wash tank or sump. Flush the screen clean in a sink. Be sure to back-flush the screen.

3. DO NOT strike the scrap screen on solid surfaces.

4. Check the sump for foreign material.

5. Clean the pump intake strainer in the bottom of the sump.

6. DO NOT scrub the interior with metal scrub pads.

7. Check the sump heating element for lime deposits and gently remove with a scouring
pad. DO NOT USE METALLIC SCRUB PADS.

8. Wipe the exterior of the dishwasher with a soft clean cloth and a mild detergent.

9. Leave the door open to aid in overnight drying.

! ATTENTION !

DO NOT USE METALLIC SCRUB PADS TO CLEAN THE MACHINE.

DO NOT SPRAY THE EXTERIOR OF THE MACHINE WITH WATER.

28

201HT - Cleaning

201HT - Cleaning

Cleaning the wash arms:

1. Unscrew the retaining screw from the upper and lower interchangeable spray arms.

2. Flush the spray arms clean in a sink. Be sure to flush the wash arm bearings.

Retaining

Screw

Wash Arm

Bearing

201HT

29

Cleaning - 201HT

Cleaning - 201HT

Scrap Screen and Sump Strainer

1. Lift the scrap screen straight up and out of the
machine to prevent food particles from falling
into the tank sump.

2. Flush the scrap screen in a remote sink making
sure to back-flush both side of the screen.

3. Wipe the tank sump of water and debris.

4. Carefully inspect the pump intake strainer. This
strainer is not removeable but must be thoroughly
cleaned before reinstalling the scrap screen.

Sump

Strainer

Scrap

Screen

Tank

Sump

! ATTENTION !

A CLOGGED OR

RESTRICTED SUMP

STRAINER WILL

PREVENT THE

PROPER WASHING,

RINSING AND

DRAINING OF THE

MACHINE.

WIPE THE EXTERIOR OF THE MACHINE WITH A SOFT CLOTH AND MILD

DETERGENT. DO NOT SPRAY THE EXTERIOR WITH WATER OR BLEACH.

LEAVE THE DOOR OPEN TO AID IN OVERNIGHT DRYING.

30

! ATTENTION !

Blank Page

This Page

Intentionally

Left Blank

31

De-liming - 201HT

De-liming - 201HT

DANGER:

Death or serious injury may result when de-liming solution is mixed with sodium hypochlorite
sanitizing agent. Mixing may cause hazardous gases to form. De-liming solution and other acids
must never be mixed with chlorine, iodine, bromine, or fluorine.

CAUTION:

Skin contact with de-liming solutions can cause severe irritation and possible chemical burns.
Always wear eye protection, rubber gloves and protective clothing when handling chemicals.

De-lime Mode - 201HT

The SCRUB/DELIME switch is used to the de-lime the machine.

SCRUB

D E L I M E

Model 201HT

Scurb/Delime Push button

32

201HT - De-liming

De-liming - 201HT

A de-liming agent must be used in accordance with your chemical supplier's instructions.

Follow the steps below to de-lime the 201HT:

1. Open the dishwasher door and remove any dish racks.

2. Turn the power switch on the dishwasher to the ON position.

3. Remove the detergent and rinse-aid, and sanitizer chemical supply tubing from their
chemical supply containers.

4. Place the tubing in a container of hot water.

5. Press and hold the prime switch UP in the DETERGENT position to flush the detergent from
the supply tubing. Release the switch.

6. Press and hold the prime switch DOWN in the SANITIZER position to flush the sanitizer
from the supply tubing. Release the switch.

7. Press and hold the rinse-aid prime switch UP in the RINSE AID position to flush the rinse-aid
from the supply tubing. Release the switch.

8. Turn the dishwasher power switch to OFF/DRAIN to drain the wash tank. The green cycle
light will go out in about 2 minutes.

9. Always wear eye protection, rubber gloves and protective clothing when handling
chemicals.

10. Open the door and carefully add the de-liming chemical to the wash tank in accordance
with your chemical supplier's instructions. Be careful to avoid splashing.

11. Close the door and press the SCRUB/Delime push button three times.

12. The SCRUB green indicator light will illuminate and the machine will run for 23 minutes.

13. Check the de-liming results and if scale is still present repeat steps 9-11.

14. Push the power switch ON to refill the machine and return the dishwasher to normal
operation.

15. Run 4 empty cycles to flush any de-liming chemicals from the machine.

16. Return chemical supply tubing to their containers and prime the chemical lines.

17. Return the dishwasher to normal operation.

33

33

Maintenance - 201HT

Maintenance - 201HT

Follow the maintenance schedules below to keep the dishwasher operating most efficiently.
Daily Maintenance

1. Make sure the water supply is on and that the drain is not clogged.

2. Check the temperature gauges and/or displays to ensure they are operating.

3. Make sure the dish racks are in good condition.

4. Check the chemical containers and refill as required.

5. Follow the cleaning procedures provided in the Cleaning Section.

Weekly Maintenance

1. Perform Steps 1-5 in the Daily Maintenance.

2. Inspect water lines for leaks.

3. Check for water leaks underneath the dishwasher.

4. Make sure the flexible water fill and drain hoses are not kinked.

5. Make sure that the dishwasher is level.

6. Clean accumulated lime deposits from the wash tank heating element.

7. Inspect the scrap screen and replace it if damaged.

8. Check the spray arms and replace or repair if damaged.

Monthly Maintenance

1. Perform the Daily and Weekly Maintenance listed above.

2. Clean the chemical dispenser pick-up tubing for the chemical dispensing pumps.

To clean the pick-up tubing:

1. Remove the pick-up tubes from their containers.

2. Place each tube in a separate container of hot water.

3. Press and hold the PRIME buttons UP and DOWN until water flows into the wash tank
compartment.

4. Return the pick-up tubes to their containers.

5. Run 3 empty dishwasher cycles to flush any chemicals from the dishwasher wash
compartment.

6. Return the pick-up tubes to their containers and prime the chemical lines.

There are no lubrication points on the dishwasher.

34

NOTE:

Model 201LT Low Temperature Undercounter Dishwasher

Model 201LT Low Temperature
Undercounter Dishwasher

35

Blank Page

This Page

Intentionally

Left Blank

36

Receiving and Placement - Installation

Counter-top

Wall

3" [8cm] Min.

34"

[86cm]

Min.

Floor

Receiving - 201LT

NOTE:

The installation of your dishwasher must be performed by qualified service personnel familiar
with food service equipment and must comply with all local health codes.
Problems due to improper installation are not covered by the Limited Warranty.

NOTE:

The installation of the dishwasher must comply with all local electrical, plumbing, health and
safety codes or in the absence of local codes, installed in accordance with the applicable
requirements in the National Electrical Code, NFPA 70, Canadian Electrical Code (CEC),
Part 1, CSA C22.1; and the Standard for Ventilation Control and Fire Protection of
Commercial Cooking Operations, NFPA 96.

Placement - 201LT

CAUTION:

Be careful when lifting and moving the dishwasher to prevent damage to the machine.

1. Inspect the outside of the dishwasher carton for signs of damage.

2. Remove the carton and inspect the dishwasher for damage.

3. Check for any options or accessories that may have shipped with your dishwasher.

4. Compare the installation site utility connections with the dishwasher utility connections
and make sure they are the same.

5. The dishwasher can be installed as a free-standing unit or under a counter-top.
The typical counter-top height in most locations is 34" [86cm].

6. It is highly recommended that the
underside of the counter-top be clad
in metal.

7. Under counter installations should provide
storage space for the dishwasher chemical
supply containers. Do not elevate the containers
above the finished floor.

8. Chemical supply containers should be placed
as close to the machine as possible and the
chemical tubing
taped to the back of the machine should be
repositioned before permanently placing the
machine.

9. Place the dishwasher in its permanent location.

10. The dishwasher has 4 adjustable feet for
leveling.

11. Level the dishwasher front-to-back and side-to-side.

37

Installation - 201LT

(Single Phase) Electrical Connections - 201LT

WARNING:
Electrocution or serious injury may result when working on an
energized circuit.

Disconnect power at the main breaker or service disconnect switch
before working on the circuit.

Lock-out and tag the breaker or service disconnect switch to
indicate that work is being performed on the circuit.

! ATTENTION !

A qualified electrician must connect the main incoming power to the dishwasher in

accordance with all local codes and regulations or in the absence of local codes in

accordance with the National Electrical Code or the Canadian Electrical Code.

Refer to the connection diagram below for single a phase machine without a built-in booster.

1. A three prong 4 foot power cord and plug is prewired with the machine for connection to a
115VAC power source.

SINGLE PHASE POWER CONNECTION

Model 201LT

L1 N

115VAC

15A

4 ft. power cord w/plug supplied

Model 201LT is equipped with a 4 ft. power cord and plug. These models require a

38

! ATTENTION !

115VAC,15A receptacle.

201LT - Installation

Water Connection - 201LT

! VERY IMPORTANT !

Make sure that the flexible water supply and drain hoses are not kinked.

Plumbing connections must allow the machine to be pulled out for service and cleaning.

Plumbing connections must comply with national, provincial local plumbing and sanitary codes. Only

qualified service personnel familiar with food service equipment should install the machine.

The installing plumber must thoroughly flush the water supply line to remove all debris

BEFORE connecting the water supply line to the machine.

1. All models have a 6 ft. flexible hot water fill hose with a 3/4" female garden hose

connector.

2. A 1/2" or larger main incoming supply line should be installed to the dishwasher.

3. We recommend that a 1/2" or larger shut-off valve be installed in the main water supply,

as close to the dishwasher as possible for servicing.

4. The 201HT has a built-in flow control which requires that the incoming hot water supply

pressure must be between 25-95 psi.

5. The hot water supply must provide a minimum of 120°F/49°C, measured at the

dishwasher; however, 140°F/60°C is recommended.

6. A water hardness of 3 grains/gal (US) [51.3 mg/L] or less is recommended. Hard

water can adversely affect wash results.

Drain Connection - 201LT

1. All models have a 6 ft.. 5/8" I.D. drain hose. The maximum drain height connection
must not exceed 3 ft.[0.9 m].

2. A 3/4" hose barb tting is strapped to the drain hose to connect the drain hose to a

wye drain tting. The service part number for the hose barb is P/N 0512321.

3. The maximum drain ow is 15 US gpm/12.4 imp gpm/60 lpm.

DO NOT REMOVE HOSE

CLAMPS

NOR STRETCH HOSE

3/4" DRAIN HOSE BARB FITTING

STRAPPED TO DRAIN HOSE

39

Installation - 201LT

Drain Connection - 201LT (continued)

NOTE

Plumbing connections must comply with national, provincial local plumbing and sanitary codes.

DO NOT REMOVE THE CLAMPS HOLDING THE DRAIN HOSE TO THE

BACK OF THE DISHWASHER.

DO NOT CONNECT THE DRAIN HOSE TO A DISPOSER.

DO NOT REDUCE THE SIZE OF THE DRAIN HOSE CONNECTION NOR USE A DOMESTIC

DRAIN FITTING.

DO NOT ADD ADDITIONAL LENGTH TO THE DRAIN HOSE.

DO NOT ALLOW THE DRAIN HOSE TO KINK.

For a Direct Drain Connection:

1. Install the drain hose to an 1-1/2" or larger "WYE" vented drain fitting.

2. CONNECTION TO A "TEE" FITTING WILL PREVENT THE DISHWASHER FROM
DRAINING COMPLETELY.

Drain Hose

Drain
Adapter

Clamp

Fitting

(Supplied by others)

3/4" NPT Hose Barb

Fitting

WYE
Fitting

DO

connect the dishwasher flexible drain

hose to a WYE drain fitting.

40

DO NOT

connect the dishwasher flexible

drain hose to a TEE drain fitting.

201LT - Installation

For an Indirect Drain Connection:

1. A 1" [25.4mm] minimum air gap must be provided between the outlet of the dishwasher
drain hose outlet and the flood-level rim of the floor drain, floor sink or any other locally
approved drain receptacle. (See illustration below.)

Dishwasher
Drain Hose

Minimum
Air Gap
1” [25.4mm]

Floor

Floor Drain

! VERY IMPORTANT !

IMPROPER INSTALLATION OF MACHINE DRAIN HOSE.

Machine drain problems are often the result of improper installation and may not

be covered by the limited warranty.

41

Installation - 201LT

Pumps and Injection Points - Detergent, Rinse-aid and Sanitizer
Dispensing Pumps - 201LT

! VERY IMPORTANT !

ALWAYS USE A COMMERCIAL-GRADE NON-CHLORINATED DETERGENT.

PLACE THE CHEMICAL SUPPLY CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE.

DO NOT ELEVATE THE CHEMICAL CONTAINERS ABOVE THE FINISHED FLOOR.

! VERY IMPORTANT !

Contact a chemical supplier for detergent and rinse-aid chemicals. The chemical supplier

must adjust the chemical dispensing pumps for water hardness and food soil types.

1. The chemical dispensing pumps are located on a center bracket behind the lower-front
access panel.

2. Each pump is equipped with 6 feet [1.8 m] of supply tubing, stiffener tubes, and strainers.

3. A RED label marked DETERGENT, a BLUE label marked RINSE-AID and a WHITE Label
marked SANITIZER identify the chemical lines.

4. The chemicals enter the wash tank compartment through a fitting located on the rear right­hand side of the wash compartment.

201LT

DETERGENT

RINSE-AID

and
SANITIZER
INJECTION

POINT

On the 201LT, chemicals enter the wash tank
through a fitting on the rear wall of the tank.

CHEMICAL

PICK-UP

TUBES

The chemical dispensing pick-up tubes are stowed at

the rear of the dishwasher.

42

201LT - Installation

Pumps and Injection Points - Detergent, Rinse-aid and Sanitizer

Dispensing Pumps - 201LT

! VERY IMPORTANT !

CHEMICAL SQUEEZE TUBES

SHOULD BE INSPECTED AND

REPLACED EVERY 6 MONTHS

RINSE-AID

SANITIZER

DETERGENT

The chemical dispensing pumps are located on the bracket behind

the lower-front access panel.

! VERY IMPORTANT !

5.25% sodium hypochlorite (chlorine beach) must be used as a sanitizing agent to provide

a minimum concentration of 50 ppm in the final rinse for the USA and 100 ppm in Ontario,

Canada. The 50 ppm or 100 ppm concentration must be

checked using chlorine test strips to make sure that the proper concentration is maintained.

43

Installation - 201LT

Pump Priming - Detergent, Rinse-aid and Sanitizer Dispensing Pumps

201LT Control Panel

140

120

160

100

180

40

60

20

0

-20

0

80
100

1110

NSF

120

C

F

Prime

200

210

220

80

60

40

20

Push button

1. Make sure the chemical containers are full and the correct pick-up tubes are in their
containers.

2. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher

will ll with water.

3. Refer to the illustration below and note the two momentary push buttons provided to

prime the detergent, sanitizer and rinse aid pumps.

4. Open the dishwasher door and observe the inlet chute on the rear right-hand side of
the wash tank.

5. Push and hold the PRIME push button UP to the DETERGENT position until detergent

is observed entering the wash tank compartment. Release the push button.

6. Push and hold the same push button DOWN until sanitizer is observed entering the

wash tank compartment. Release the push button.

7. Push and hold the other push button UP to the RINSE AID position until air bubble

are observed moving in the pick-up tube, then hold the button for another 2 minutes
Release the push button.

8. Priming is complete.

44

201LT - Installation

Pump and Tank Fill Adjustments

! ATTENTION !

The amount of dispensed chemical is determined by the run time of the dispensing pump.

1. Adjustment screws are provided for the
dispensing pumps and for the wash tank fill.
They are located on the right-hand side of
the dishwasher behind the lower front access
panel.

2. Make sure the chemical containers are full
and the pick-up tubes are in their proper
containers.

3. Turn the dishwasher power switch ON.
The switch will illuminate and the dishwasher
will fill with water.

Use a 4mm

blade

screwdriver

4. Run a normal dishwasher cycle and test
chmical concentrations according to the
chemical supplier's instructions.

CAUTION:

Excessive pressure to the potentiometers when

adjusting can result in bent or broken adjusting

screws.

5. Each dispensing pump has a clearly marked
adjustment screw. Turn the screw CW to
increase the run time of the dispensing pump
and CCW to reduce the run time of the
dispensing pump.

6. The Fill adjustment screw will provide a
small change in the tank water level. If
a large adjustment is needed, check the
incoming water pressure and make sure the
fill hose is not kinked. If the above items are
okay then the size of the incoming water
supply should be checked.
The incoming water supply line must be a
minimum of 1/2" or larger.

45

Operation - 201LT

Operation - 201LT

Loading Dish Racks

! VERY IMPORTANT !

Prescrape and rinse wares before loading

into the machine.

! VERY IMPORTANT !

DO NOT OVERLOAD THE DISH RACK.

LOAD ONE DISH RACK INTO THE MACHINE AT A TIME.

Load plates and glasses in a peg rack.

Load utensils in a single layer in a flat bottom

rack.

Load cups and bowls in a flat bottom rack.

Load pots and pans in a flat bottom rack.

1. Prescrape and rinse the wares before loading to remove large food particles.

2. Load soiled wares into the dish rack. Place plates and glasses in a peg rack. Place

cups and bowls in a at bottom rack. Place utensils in a single layer in a at-bottom

rack.
Place pots and pans in a at-bottom rack.

Do not overload the dish rack. Wash one dish rack at a time.

3. Slide one dish rack into the wash compartment making sure that wares do not interfere

with the rotating spray arms. Do not wash more than one dish rack at a time.

46

UL130 - Operation

Operation - 201LT

Normal Wash Mode

140

120

160

100

180

40

60

80

60

40

20

0

200

80

20

100

210

1110

0

NSF

120

-20

C

220

F

Cycle Light

Push button

ON-OFF/DRAIN

Power Switch

Combination Wash and Final

Rinse Temperature Gauge

Prime

Push buttons

Vari-Cycle

Delime Switch

and Light

1. Close the dishwasher front door.

2. Push the dishwasher Power Switch UP to turn the power ON.

3. The power switch will illuminate and the machine will fill with water.

4. Wait until the wash temperature gauge indicates a minimum of 120ºF/49ºC.

RUN THE FIRST CYCLE WITH AN EMPTY DISH RACK TO HEAT
THE WASH TANK INTERIOR.

5. Load the dish rack into the machine. Wash one dish rack at a time.

6. Close the door, then press the START BUTTON for 1 second. The green in-cycle
light will illuminate and the wash cycle will begin. The total cycle is approximately
141 seconds.

7. Opening the door during a cycle will stop the dishwasher. If the door is open more
than 5 seconds the cycle will restart from the beginning, if open less than 5 seconds
the cycle
will resume where it left off when the dishwasher door is closed.

Start

8. The final rinse cycle begins at the end of the wash cycle. The machine drains and
then refills with fresh water hot water. Check the rinse temperature gauge during
the final rinse. It must indicate a minimum of 120ºF/49ºC. The final rinse water is
retained for the next wash cycle.

9. When the green cycle light goes out, open the door and remove the rack of clean
wares.

5.25% sodium hypochlorite (chlorine beach) must be used as a sanitizing agent to

provide a minimum concentration of 50 ppm in the final rinse for the USA and 100 ppm

in Ontario, Canada. The 50 ppm or 100 ppm concentration must be

checked using chlorine test strips to make sure that the concentration is maintained.

! VERY IMPORTANT !

47

Operation - 201LT

Vari-Cycle Mode - 201LT

The Vari-Cycle Wash Mode is used to wash heavily soiled items such as pots, pans and other
wares that require more washing time than the standard Normal Wash Mode. The dishwasher
will remain in the Vari-cycle Mode until the operator exits the mode or 15 minutes has elapsed.

1. Load a dish rack into the dishwasher, close the door and press the START button.

2. The green in-cycle light will illuminate and the dishwasher will begin a normal wash cycle.

3. Wait 10 seconds for the detergent to enter the wash compartment before pressing the
Vari-cycle/Delime button.

Press the Vari-Cycle button to increase the
wash time for clean heavily soiled wares.

4. Press the Vari-cycle/Delime button to place the dishwasher increase the wash time.

5. The green vari-cycle light will illuminate indicating that the machine is in the
vari-cycle mode.

6. The dishwasher will continue to wash for a maximum of 15 minutes or until the operator
presses the vari-cycle button again whichever occurs first.

7. Press the vari-cycle button. The green vari-cycle light will go out indicating that
the dishwasher has returned to the Normal Wash Mode.

8. The dishwasher will finish the wash cycle and perform a final rinse of the wares.

48

The dishwasher will enter the drain mode whenever the Power Switch is
pushed down to the OFF/DRAIN position.

(DRAIN)

POWER

1. Push the illuminated power switch down to the OFF/DRAIN position.
The power switch light will go out.

201LT - Operation

Drain Mode

2. The cycle light will illuminate and the machine will drain.

3. The machine, will flush, perform 3 short drain cycles and then drain completely.

4. The cycle light will go out indicating that the drain cycle is complete.

! VERY IMPORTANT !

Draining Problems Related To Improper Installation.

Problems with machine draining are often the result of improper installation. The drain hose

is looped and clamped as shown in the photo below and must not be changed.

The drain hose is looped and
clamped and must not be
changed. Altering the drain
hose routing may result in the
machine's inability to drain
or may cause the machine to
siphon the water out of the
machine.

49

Cleaning - 201LT

Cleaning - 201LT

Retaining

Screw

Wash Arm

Bearing

!

VERY IMPORTANT !

DRAIN AND CLEAN THE DISHWASHER EVERY 2 HOURS OF CONTINUOUS

OPERATION, AFTER EACH MEAL PERIOD, AND AT THE END OF THE DAY.

Cleaning the wash tank:

1. Remove the upper and lower spray arms and flush clean in a sink.

2. Remove the scrap screen taking care that debris does not fall off the screen and into the
wash tank or sump. Flush the screen clean in a sink. Be sure to back-flush the screen.

3. DO NOT strike the scrap screen on solid surfaces.

4. Check the sump for foreign material.

5. Clean the wash pump strainer in the bottom of the sump.

6. DO NOT scrub the interior with metallic scrub pads.

7. Check the sump heating element for lime deposits and gently remove with a scouring
pad. DO NOT USE METALLIC PADS.

8. Wipe the exterior of the dishwasher with a soft clean cloth and a mild detergent.
DO NOT USE BLEACH.

9. Leave the door open to aid in overnight drying.

Cleaning the wash arms:

1. There are two combination wash/rinse arms in the wash tank. They are interchangeable.

2. The wash arms are should be removed and thoroughly flushed clean in a sink.

3. Special attention should be paid to the cleaning and inspection of the wash arm
bearings making sure they are clean and free of excessive wear.

4. If the bearings are damaged, contact an authorized service agent for replacement.

50

201LT - Cleaning

Cleaning - 201LT (continued)

1. Lift the scrap screen straight up and out of
the machine to prevent food particles from
falling into the tank sump.

2. Flush the scrap screen in a remote sink
making sure to back-flush both side of the
screen.

3. Wipe the tank sump of water and debris.

4. Carefully inspect the sump strainer. This
strainer is not removable but must be
thoroughly cleaned before reinstalling the
scrap screen.

Scrap Screen and Sump Strainer

Scrap

Screen

Tank

Sump

! ATTENTION !

A CLOGGED SUMP

STRAINER WILL

PREVENT THE

PROPER WASHING,

RINSING AND

DRAINING OF THE

MACHINE.

Sump

Strainer

! ATTENTION !

WIPE THE EXTERIOR OF THE MACHINE WITH A SOFT CLOTH AND MILD

DETERGENT. DO NOT SPRAY THE EXTERIOR WITH WATER.

LEAVE THE DOOR OPEN TO AID IN OVERNIGHT DRYING.

51

De-liming - 201LT

De-liming - 201LT

DANGER:

Death or serious injury may result when de-liming solution is mixed with sodium hypochlorite
sanitizing agent. Mixing may cause hazardous gases to form. De-liming solution and other acids
must never be mixed with chlorine, iodine, bromine, or fluorine.

CAUTION:

Skin contact with de-liming solutions can cause severe irritation and possible chemical burns.
Always wear eye protection, rubber gloves and protective clothing when handling chemicals.

De-lime Mode - 201LT

The Vari-cycle/Delime switch is used to the de-lime the machine.

Model 201LT

Vari-Cycle/Delime Push button

52

201LT - De-liming

201LT De-liming

Follow the steps below to de-lime the 201LT:

1. Open the dishwasher door and remove any dish racks.

2. Turn the power switch on the dishwasher to the ON position.

3. Remove the detergent and rinse-aid, and sanitizer chemical supply tubing from their
chemical supply containers.

4. Place the tubing in a container of hot water.

5. Press and hold the prime switch UP in the DETERGENT position to flush the detergent from
the supply tubing. Release the switch.

6. Press and hold the prime switch DOWN in the SANITIZER position to flush the sanitizer
from the supply tubing. Release the switch.

7. Press and hold the rinse-aid prime switch UP in the RINSE AID position to flush the rinse-aid
from the supply tubing. Release the switch.

8. Turn the dishwasher power switch to OFF/DRAIN to drain the wash tank. The green cycle
light will go out in about 2 minutes.

9. Always wear eye protection, rubber gloves and protective clothing when handling
chemicals. Open the door and carefully add the de-liming chemical to the wash tank in

accordance with your chemical supplier's instructions. Be careful to avoid splashing.

10. Close the door and press the Vari-cycle/Delime push button three times.

11. The Vari-cycle/Delime green indicator light will illuminate and the machine will run for 23
minutes.

12. Check the de-liming results and if scale is still present repeat steps 9-11.

13. Push the power switch ON to refill the machine and return the dishwasher to normal
operation.

14. Return chemical supply tubing to their containers and prime the chemical lines.

53

Maintenance - 201LT

Follow the maintenance schedules below to keep the dishwasher operating most efficiently.

Daily Maintenance

1. Make sure the water supply is on and that the drain is not clogged.

2. Check the temperature gauges and/or displays to ensure they are operating.

3. Make sure the dish racks are in good condition.

4. Check the chemical containers and refill as required.

5. Follow the cleaning procedures provided in the 201LT Cleaning Section.

Weekly Maintenance

1. Perform Steps 1-5 in the Daily Maintenance.

2. Inspect water lines for leaks.

3. Check for water leaks underneath the dishwasher.

4. Make sure the flexible water fill and drain hoses are not kinked.

5. Make sure that the dishwasher is level.

6. Clean accumulated lime deposits from the wash tank heating element.

7. Inspect the scrap screen and replace it if damaged.

8. Check the spray arms and replace or repair if damaged.

Monthly Maintenance

1. Perform the Daily and Weekly Maintenance listed above.

2. Clean the chemical dispenser pick-up tubing for the chemical dispensing pumps.

To clean the pick-up tubing:

1. Remove the pick-up tubes from their containers.

2. Place each tube in a separate container of hot water.

3. Press and hold the PRIME buttons UP and DOWN until water flows into the wash tank
compartment.

4. Return the pick-up tubes to their containers.

5. Run 3 empty dishwasher cycles to flush any chemicals from the dishwasher wash
compartment.

6. Return the pick-up tubes to their containers and prime the chemical lines.

There are no lubrication points on the dishwasher.

54

NOTE:

201HT, 201LT - Troubleshooting Chart and Timing Charts

Models 201HT, 201LT
Troubleshooting Charts

55

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Intentionally

Left Blank

56

Troubleshooting

201HT, 201LT

Illustrations Page

Troubleshooting Chart - 2101HT, 201LT .................................................................60

Wash Display Codes Temperature Display Board - 201HT Only

Rinse Display Codes Temperature Display Board - 201HT Only

Booster Display Codes Temperature Display Board - 201HT Only

Timer Board Connection Diagram - 201HT, 201LT

Timer Board Diagnostic Testing - 201HT, 201LT

Temperature Display Board Power Terminal Connections - 201HT, 201LT

Temperature Display Board M3-M4 Selector Slide Switch - 201HT, 201LT

Temperature Display Board Diagnostics - 201HT, 201LT

Booster/Wash Tank Heater Interlock Circuit Operation - 201HT Only

....................................................64

........................................................65

............................................ 68

.................................61

.................................. 62

............................... 63

......................... 69

....................66

................... 67

57

Troubleshooting - 201HT, 201LT

Condition Cause Solution

Dishwasher will not run.

Low or no water.

Chemicals won’t feed into
dishwasher.

Door not closed.
Main power OFF.
Dishwasher OFF.

Main water supply off.
Fill hose kinked.
Low incoming water pressure
Solenoid valve defective.
Solenoid strainer clogged.
Circuit board fuse blown.

Chemical supply low.
Supply tubing damaged.
Supply tubing kinked.
Pick-up tube clogged
Chemical circuit board fuse blown.

Close door completely.
Check breaker on panel.
Turn dishwasher power switch ON.

Open supply valve.
Straighten fill hose.
Set flowing water pressure to 20-22 PSI.
Install repair kit or replace.
Clean strainer.
Contact service agent..

Refill chemical container.
Replace tubing.
Straighten tubing.
Clean/replace tube.
Contact service agent.

Low water pressure
pumped from wash spray
arms.

Clogged scrap screen.
Clogged spray arms.

Clogged pump intake screen.

Clean scrap screen.
Clean spray arms.

Inspect sump and clean pump intake
screen.

Dishwasher stays in
wash cycle.

201HT-Incoming water supply cold
Rinse Sentry extends wash mode
for a maximum time of 5-minutes
to allow final rinse water booster

temperature to reach 180˚F/82˚C.

201LT- Vari-Cyle button was pressed
and vari-cycle light is on.

Raise incoming water temperature.
Adjust/replace final rinse booster

thermistor.
Press Vari-cycle button to exit and

return to the normal wash mode.

Poor wash results.

Excessively hard water.
Water temperature low.

Thermistor defective.
(See chemicals won’t feed

above.)
(See low or no water above.)
Detergent injector defective.

Chemical circuit board fuse blown.
Wares incorrectly loaded.

in dishrack.

Booster high limit tripped.
Wash tank high limit tripped.

Contact chemical supplier.
Raise incoming water

temperature to 140°F
Replace thermistor.
(See chemicals won’t feed

above.)
(See low or no water above.)
Replace squeeze tube.

Replace injector motor.
Clean tubing and pick-up.

Contact service agent.
Reposition wares or reduce amount of

wares in dish racks.

Reset or replace high limit.
Reset or replace high limit.

Water has drained out of
the wash tank while the
dishwasher was idle.

Anti-siphon loop in drain
hose has been removed.

Drain hose clamp is not
holding the drain hose
in proper position.

Building plumbing does not
provide correct air vent
to prevent siphoning.

Re-route drain hose.
DO NOT STRETCH HOSE

Replace/adjust hose clamp
making sure goose-neck
is maintained.

Contact service Agent
and/or plumber.

58

Wash Display Codes

201HT Only - Digital Temperature Display Codes

Digital Temperature Display Codes

Display codes that appear in the display windows indicate the operating condition of the machine.
Refer to the illustrations below for the meaning of the codes.

WASH DISPLAY CODE

L o

WASH TEMP

H1 8 6

WASH TEMP RINSE TEMP

HH

1 8 8

RINSE TEMP

CAUSE

Wash temperature

is below 100˚F

Wash temperature

is above 180˚F

Wash tank is empty and tank
heater is on.

WASH TEMP

E1 7 9

WASH TEMP

1 7 1

RINSE TEMP

RINSE TEMP

CAUTION:

The tank may be extremely hot.

Defective wash thermistor or
open, broken, wire between
thermistor and board or loose
connection.

59

Digital Temperature Display Codes - 201HT Only

Rinse Display Codes

RINSE DISPLAY CODE

1 5 9

WASH TEMP

1 5 6

WASH TEMP RINSE TEMP

L o

RINSE TEMP

HHH

CAUSE

Rinse temperature

is below 100˚F

Rinse temperature

is above 200˚F

1 4 9

WASH TEMP

WASH TEMP

RINSE TEMP

E1 4 6

RINSE TEMP

Booster tank is empty
& booster heater is on.

CAUTION:

Temperature in the booster
may be extremely hot

Defective rinse thermistor or
open, broken, wire between
thermistor and board or loose
connection.

60

201HT Only - Digital Temperature Display Codes

Booster Display Codes

Error Codes for Booster and Final Rinse Thermistors Only.

DISPLAY CODES

1 5 0

WASH TEMP

RINSE TEMP

H

1 5 0

WASH TEMP RINSE TEMP

CAUSE

Booster overtemp lockout
because booster temperature
is greater than 210˚F.

NOTE: Booster is locked out
for 10 minutes before being
re-energized.

Booster therrmistor is
defective or disconnected,
broken wires.

NOTE: After the therrmistor
is reconnected, there is a 5
second delay before the
display is re-energized.

1 5 0

WASH TEMP

RINSE TEMP

Both booster and final rinse
display thermistors are
defective, unplugged, or open
or broken wires between the
display and thermistor.

NOTE: After a therrmistor
is reconnected, there is a 5
second delay before the
display is re-energized.

61

Timer Board Connection Diagram - 201HT, 201LT 

62

201HT, 201LT - Timer Board Diagnostic Testing

Diagnostic Testing for the Solid State Timer Board, P/N 0712105

Beginning with S/N W150350341 and above

Before testing, Press the dishwasher power switch to OFF/DRAIN and allow the machine
to complete the drain cycle.

1

Check the incoming voltages.

With the Power switch in the OFF/DRAIN position,
press the START button 2 times.

2

If the drain valve opens and closes 5 times
then the DRAIN VALVE is okay.

Open the door.

If the green cycle indicator light blinks continuously

3

for 10 seconds, then the DOOR SWITCH and the
CYCLE LIGHT are okay.

Press and release the START button.

If the green cycle indicator light flashes then the

4

START BUTTON is okay.

With the Power switch in the OFF/DRAIN position,
press the START button 3 times.

The timer board and the following components
are okay if the components run consecutively for
a few seconds in the following order:

ON

OFF

(DRAIN)

POWER

PRESS START TWO TIMES

Indicator light

Indicator light

PRESS START AND RELEASE

PRESS START THREE TIMES

START

START

START

START

5

1. Fill Valve

2. Detergent Pump

3. Rinse-aid Pump

4. Drain Valve opens and then closes

5. Wash Pump

6. Drain Pump or Sanitizer Pump

Troubleshooting - See below if one or more of the components in Step 5 did not run.

CONDITION

A single component in Step 5 does not run. Check the component that did not run.

Wash pump only component that runs (Except UH330B, 601HT) Check timer bd 4A fuse. (All except UH330B & 601HT)

6

Wash pump only component that runs (UH330B, 601HT ONLY)

Wash pump only component that won’t run. 4A/8A fuse okay.

None of the components in Step 5 run. Check neutral wire - see troubleshooting guide.

POSSIBLE CAUSE/SOLUTION

Check timer bd 8A fuse. (UH330B & 601HT ONLY)

Check pump/motor - see troubleshooting guide.

0512979 rev. B

63

Digital Temperature Display Board - 201HT, 201LT

Power Neutral

Power Terminals.

for display board

120VAC input

A

for booster control

120VAC input

B

Undercounter Temperature Display Board — P/N 0512106-1

Booster OUT

to booster contactor coil

120VAC ouput

F

Wash

Heater OUT

Booster IN

to wash tank heater

240VAC output

Heater

IN

Fuse 20A

Wash

E

for wash tank heater

240VAC input

C

for wash tank heater

20 Amp fuse

D

64

M4

M3

201HT, 201LT - Digital Temperature Display Board

Undercounter Temperature Display Board — P/N 0512106-1

M3 - M4 Model Selector Slide Switch

M3 Setting

Slide the selector switch to the M3 position

M4 Setting

Slide the selector switch to the M4 position

NOTE:

The machine will not operate properly if the

selector switch is set to the wrong position.

for machines equipped with thermistors only.

for machines equipped with thermostats.

Before installing a new version display board,

you must select the model type using the

M3 - M4 Switch located at the bottom center

of the circuit board.

! ATTENTION — VERY IMPORTANT !

65

Digital Temperature Display Board - 201HT, 201LT

Pushbutton

Rinse Test

B

for Wash and Rinse

Thermistors

Pushbutton

Wash Test

C

Wire Harness Plug

A

Undercounter Temperature Display Board

P/N 0512106-1

booster temperature. Full range

is 3/4 turns 180-200°F. DO

wash temperature. Full range is

3/4 turns 120-160°F. DO NOT

FORCE PAST THE STOPS.

NOT FORCE PAST THE STOPS.

E - Turn clockwise to increase the

D - Turn clockwise to increase the

When performing diagnostics the values are

displayed in °F even if the display is set for °C.

A F/C Slide switch is provided on the board

to change the display from the factory default

setting of °F to the optional °C.

is operating normally.

should appear in the wash

temperature display window

indicating the circuit board

Temperature Adjustments

SETTING

ONLY

SETTING

ONLY

in the rinse temperature display

window indicating the circuit

pushbutton for 10 seconds

A numerical value of 140

board is operating normally.

C - Push and hold the wash test

Temperature

Adjust

M4

Temperature

Adjust

M4

pushbutton. A numerical value

of 179-180 should appear

Booster

D

Wash

E

operation, disconnect the harn-

ess from this plug. The wash and

rinse displays will display E.

B - Push and hold the rinse test

A - When testing the circuit board

Diagnostics

66

201HT Only - Booster Heater/Wash Tank Heater Interlock Circuit Operation

heater is connected for 1 PH

heater is connected for 1 PH

k

No power
when booste
heater is
connected fo
1 PH

Auxiliary

Contactor

Booster Heater/Wash Tank Heater Interlock Circuit Operation

For Model 201HT, the booster heater/wash tank heater interlock circuit removes
power from the wash tank heater whenever the booster heater contactor energizes.
The illustration below shows how the booster heater contactor is wired.

The booster heater contactor is located on the center of the base behind the lower front access
panel.

Interlock Circuit Operation

1. The dishwasher fills with water when the main power switch on the dishwasher is turned on.
The booster heater thermistor calls for heat which energizes the booster heater contactor.

2. The auxiliary contact on the top of the contactor opens and removes power from the
wash tank heater.

3. When the booster heater thermister is satisfied, the booster heater contactor de-energizes
and the auxiliary contacts close applying power to the wash tank heater.

4. This operation is repeated whenever the booster thermistor calls for heat.

1H3

1H1

1H2

To booster heater
1 PH 208-230VAC

r
r

To wash
tank heater
115VAC

Booster Heater

Contactor

L3

No power when booster
heater is connected for 1 PH

L1
N

L2

L1

From
main
terminal block
115 VAC

From
main
terminal bloc
1 PH
208-230VAC

Main Terminal Block (MTB)

L1 L2 L3 N

Auxiliary

To booster

heater contactor

Contactor

115VAC

1PH

208-230VAC

No power when booster

To

No power when booster

67

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68

201HT, 201LT - Service Replacement Parts

Models 201HT, 201LT
Service Replacement Parts

69

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This Page

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Left Blank

70

Service Replacement Parts

Service Replacement Parts

Illustrations Page

Wash Pump/Motor Assembly - 201HT, 201LT ....................................................................74

Base Assembly - 201HT, 201LT

Fill Piping Assembly - 201HT, 201LT

Fill Solenoid Valve - 201HT, 201LT

Fill Chute Assembly - 201HT, 201LT

Chemical Dispensing Pumps - 201HT Only

Chemical Dispensing Pumps - 201LT Only

Booster Assembly - 201HT Only

Power Input Block and Cord Assemblies - 201HT, 201LT

Timer Control Board Assembly - 201HT, 201LT

Wash/Rinse Spray Arm and Drain Valve - 201HT, 201LT

Control Panel - 201HT Only

Control Panel - 201LT Only

Panels - 201HT, 201LT

Door Assembly - 201HT, 201LT

Dish racks - 201HT, 201LT

................................................................................................... 102

......................................................................................... 76

.................................................................................. 80

....................................................................................82

...................................................................................84

......................................................................... 86

.......................................................................... 88

........................................................................................90

...................................................................94

.............................................................................................98

.............................................................................................100

....................................................................................... 104

.............................................................................................106

...................................................... 92

..................................................... 96

71

Wash Pump/Motor Assembly - 201HT, 201LT

14

15

1

13

5

6

7

8

9

10

2

4

3

12

11

72

201HT, 201LT - Wash Pump/Motor Assembly

Item Part Description Qty.
No. No.

1 0512347 CAPACITOR 40µF 1

2 0512101 PUMP/MOTOR ASSEMBLY COMPLETE 1
115VAC/60/1

3 0313394 BRACKET, WASH PUMP 1

4 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST 2

5 110285 GASKET 1

6 114139 SEAL 1

7 0512345 IMPELLER 1

8 0501478 WASHER, PLAIN, 17/64" 1

9 106482 WASHER, LOCK, 1/4" 1

10 114144 NUT, M6 1

11 0512340 SCREW, M4, PHIL, PAN HD. 9

12 0512341 VOLUTE, PUMP 1

13 114137 BACKPLATE, PUMP 1

14 107337 NUT, M4 9

15 0513131 COVER, REAR MOTOR FAN 1

NOTE: The pump motor is not sold separately.

73

Base Assembly - 201HT, 201LT

23

11

13

22

3

To upper
wash hub

20

21

20

2

1

4

5

7

6

8

6

10

9

201LT Only

13

12

5

15

14

6

16

17

18

201LT Only

19

18

19

74

25

26

27

24

24

13

25

28

29

30

31

201HT, 201LT - Base Assembly

Item Part Description Qty.
No. No.

1 0512136 SCREEN, SCRAP ASSY. 1

2 0513324 FLANGE, PUMP SUCTION 1

3 0513677 O-RING A/R

4 0512169 HEATER, 120VAC 750W (201LT) 1

----- 0512426 HEATER, 240V 2kW (201HT) 1

5 201029-1 NUT, LOCK 1/2 INCH NI PLATED A/R

6 0512099 O-RING 1

7 0508872 ADAPTOR, THERMOMETER (201LT Only) 1

8 0512107 THERMOMETER, WASH TANK (201LT Only) 1

9 108954 NUT, GRIP 6-32 WITH NYLON INSERT SST 2

10 113604 THERMOSTAT, HI-LIMIT BI-METAL SNAP, 212°F 1

11 0508808 CLAMP, SS GEAR 2

12 0512299 ADAPTOR, THERMISTOR 1

13 0513310 THERMISTOR, 10 KΩ, 2 WIRE ASSY (201HT Only) 1

14 0509302 HOSE, 5/8" ID X 1" OD X 6" LG. A/R

15 0507323 THERMOSTAT, WASH (201LT Only) 1

16 0513329 GASKET, PUMP SUCTION 1

17 0513325 ELBOW, PUMP SUCTION 1

18 0501476 WASHER 6

19 107967 NUT, 1/4-20 W/NYLON INSERT SST 6

20 0502571 CLAMP, HOSE 1-1/16" - 2" 2

21 0513328 HOSE, PUMP SUCTION 1

22 0512119 HOSE, PUMP DISCHARGE 1

23 0512101 PUMP/MOTOR COMPLETE 115/60/1 1

24 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST 1

25 0512985 CLAMP, HOSE 1

26 0504952 VALVE, FILL 5.0 GPM 1

75

Base Assembly - 201HT, 201LT

Item Part Description Qty.
No. No.

27 0509526 HOSE, 1/2" X 7 FT. FEM. GARD. ADAPT. 1

28 0501379 SWITCH, 15A 1

29 0512792 SCREW, 10-32 X 1/4" RD. HD. PHILL. SST 2

30 0508752 SCREW, 4-40 X 5/8" RH. HD. PHILL. SST 2

31 0313432 BRACKET, DOOR SWITCH 1

76

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Left Blank

77

Fill Piping Assembly - 201HT, 201LT

Note:
This is a 3/4"
garden hose fitting

From Hot Water

Supply

8

Fill Valve Assembly

on Next Page

7

9

5

6

2

1

4

6

2

3

2

78

To Fill Chute

201HT, 201LT

201HT, 201LT - Fill Piping Assembly

Item Part Description Qty.
No. No.

1 0502653 ELBOW, 90° 3/8" MPT X 1/2" HOSE 1

2 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8" SST 4

3 0300065 SUPPORT, VALVE 1

4 0300203 CLAMP, VALVE 1

5 0502618 HOSE BARB, 1/2" X 3/8" MPT 1

6 0512985 CLAMP, HOSE 1

7 0509526 HOSE, 1/2" X 7 FT. FEM. GARD. ADAPT. 1

8 0505320 WASHER, 1” OD GARDEN HOSE 1

9 0504952 VALVE, FILL, 3/8" NPT 1

79

Fill Solenoid Valve - 201HT, 201LT

8

7

6

5

9

4

3

1

80

2

201HT, 201LT - Fill Solenoid Valve

Item Part Description Qty.
No. No.

1 0504952 VALVE, FILL 5.0 GPM 1

2 0502803 SCREEN, VALVE STRAINER 1

3 0502804 GASKET, CAP 1

4 0504958 WASHER, FLOW 5.0 GPM 1

5 0502811 KIT, REBUILD 1

6 0505229 GUIDE 1

7 0501406 SCREW, SLOT SS RH 8-32 X 1/2" 3

8 0505235 COIL, 115V 60HZ 10W 1

9 0502807 GASKET, OUTLET (COPPER) 1

81

Fill Chute Assembly - 201HT, 201LT

18

20

19

21

17

1

17

2

10

3

7

9

17

8

4

5

6

17

16

15

14

13

11

12

82

201HT, 201LT - Fill Chute Assembly

Item Part Description Qty.
No. No.

1 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R

2 0502666 HOSE, 1/8" ID X 1/4" OD PVC A/R

3 0502667 HOSE, 1/4" ID X 3/8" OD PVC A/R

4 100194 NUT, GRIP 10-32 W/NYLON INSERT 2

5 0503722 NUT, HEX 10-32 SST 4

6 0507709 WASHER, FLAT #10 SST 4

7 0508867 CHUTE, INLET 1

8 0509048 GASKET, INLET CHUTE 1

9 0308822 CLAMP, EMT 1/2" 1

10 0509302 HOSE, 5/8" ID X 1" OD PVC BRAIDED A/R

11 0306363 TUBE, STIFFENER A/R

12 0501869 STRAINER A/R

13 0509526 HOSE, FILL 1/2" X 7 FT. FEM. GARD. ADAPT. 1

14 0503695 LABEL, DETERGENT HOSE 1

15 0505483 LABEL, RINSE-AID HOSE 1

16 0503694 LABEL, SANITIZER HOSE (201LT ONLY) 1

17 0512369 CLAMP, CONDUIT 4

18 0502571 CLAMP, HOSE GEAR A/R

19 0512120 HOSE, WASH 1

20 106090 TIE PLATE 2

---- 0501518 TIE, NYLON 5-1/2" 2

21 0512757 CONDUIT, 1/2" A/R

--- 0512758 CONDUIT, 3/8" A/R

83

Chemical Dispensing Pumps - 201HT Only

9

5

3

2

2

4

1

6

DETERGENT

7

7

7

8

11

10

6

12

16

15

IMPORTANT:
Check Items 9 and 20
every 6 months and replace
if stretched or worn.

7

20

21

19

12

13

14

18

RINSE-AID

17

84

201HT Only - Chemical Dispensing Pumps

Item Part Description Qty.
No. No.

1 0501869 STRAINER 2

2 0306363 TUBE, 3/8" ID X 12" LG. STIFFENER 1

3 0505483 LABEL, RINSE-AID HOSE 1

4 112883-1 TUBING, 1/8" OD X 1/16" ID A/R

5 0503695 LABEL, DETERGENT HOSE A/R

6 0502667 HOSE, 1/4" ID X 3/8" OD PVC A/R

7 0501519 TIE, NYLON 4" 7

8 0512369 CLAMP, HOSE 2

9 114202 TUBE, PUMP 3/16" ID X 3/8" OD X 9" LG. 1

10 114203 PUMP HD KIT, PERISTALIC 2

11 0502644 ELBOW, 1/4" HOSE BARB 2

12 100007 SCREW, 10-32 X 3/8" TRUSS SST 3

13 0313644 PIN, HINGE 1

14 0513645 HOLDER, CABLE 4

15 0313393 BRACKET, CHEMICAL PUMP 1

16 0510870-1 GEARMOTOR, 115/60/1 2

17 0503756 MOTOR, INJECTOR PUMP 1

18 0313431 BRACKET, HINGED PANELS 1

19 0502666 HOSE, 1/8" ID X 1/4" OD PVC A/R

20 0706635 TUBE, ELEMENT 45 CC 1

21 0707142 ROTOR 1

85

Chemical Dispensing Pumps - 201LT Only

5

4

3

4

6

2

1

4

8

SANITIZER

4

9

8

9

7

10

10

IMPORTANT:
Check Items 9 and 13
every 6 months and
replace if stretched
or worn.

11

11

RINSE-AID

12

20

22

18

21

17

19

16

17

7

8

15

17

17

DETERGENT

17

17

18

86

8

13

14

201LT Only - Chemical Dispensing Pumps

Item Part Description Qty.
No. No.

1 0501869 STRAINER 2

2 0306363 TUBE, 3/8" ID X 12" LG. STIFFENER 1

3 0505483 LABEL, RINSE-AID HOSE 1

4 0502666 HOSE, 1/8" ID X 1/4" OD PVC A/R

5 0503694 LABEL, SANITIZER HOSE A/R

6 0503695 LABEL, DETERGENT HOSE A/R

7 0502667 HOSE, 1/4" ID X 3/8" OD PVC A/R

8 0501519 TIE, NYLON 4" 8

9 0706635 TUBE, ELEMENT ASSEMBLY 45CC 1

10 0707142 ROTOR 1

11 0503756 MOTOR, INJECTOR PUMP 1

12 0502644 ELBOW, 1/4" HOSE BARB 2

13 114202 TUBE, 3/16" ID X 3/8" OD X 9" LG. 1

14 114203 PUMP HD KIT, PERISTALIC 1

15 0512369 CLAMP, HOSE 1

16 0313393 BRACKET, CHEMICAL PUMP 1

17 0504822 SCREW, 8-32 X 1/2" PAN HD. SST 4

18 100007 SCREW, 10-32 X 3/8" TRUSS SST 3

19 0510870-1 GEARMOTOR, 115/60/1 1

20 0313644 PIN, HINGE 1

21 0313431 BRACKET, HINGED PANELS 1

22 0513645 HOLDER, CABLE 4

87

Booster Assembly - 201HT Only

3

1

1

4

15

14

6

5

4

13

7

8

9

10

11

12

2

2

1

88

201HT Only - Booster Assembly

Item Part Description Qty.
No. No.

1 0512985 CLAMP, SS GEAR-MIN. 1/2" 4

2 107417 HOSE, RUBBER 1/2" ID X .84" OD A/R

3 0513314 TEE, RINSE 1

4 0513310 THERMISTOR 10 kΩ, 2-WIRE 2

5 110562 THERMOSTAT, HIGH LIMIT 240°F 1

6 108954 NUT, GRIP 6-32 W/NYLON INSERT SST 2

7 0512185 BOLT, HEX FLANGE, 1/4-20 X 3/8" SST 2

8 109985 SEAL, BOOSTER ELEMENT 1

9 111235-1 BOOSTER, ELEMENT 5 KW, 40°F RISE 1

--- 111233 BOOSTER, ELEMENT 9 KW, 70°F RISE 1

10 106482 WASHER, LOCK 1/4" SPLIT SST 3

11 100003 NUT, PLAIN 1/4-20 SST 6

12 111885 INSULATOR 1

13 107908 COVER, ELEMENT 1

14 0713333 TANK, BOOSTER SST 1

15 0508817 PLUG, 1/8" 1

---- 0513538 HARNESS, BOOSTER THERMISTOR 2

--- 0513537 HARNESS, WIRING (UH130B NOT SHOWN) 1

89

Power Input Block and Cord Assemblies - 201HT, 201LT

201HT

5

16

6

1

4

2

3

7

90

10

201LT

8

9

15

14

13

11

12

201HT, 201LT - Power Input Block and Cord Assemblies

Item Part Description Qty.
No. No.

1 0313396 COVER, BOX WIRING 1

2 0501411 SCREW, 10-32 X 1/4", TRUSS HD. 2

3 0512432 CONTACTOR, 3-POLE 120VAC COIL 1

4 0509527 BLOCK, TERMINAL, 4-POLE (201HT Only) 1

5 103310 LUG, GROUND 1

6 0313395 BOX, WIRING 1

7 107964 BUSHING, STRAIN RELIEF, SMALL A/R

8 201029-1 NUT, LOCK 1/2 INCH NI PLATED A/R

9 0512099 O-RING 1

10 0513312 CORD AND PLUG, 115VAC (201LT Only) 1

11 0507323 THERMOSTAT, WASH (201HT Only) 1

12 0503647 RELIEF, STRAIN 1

13 0501450 SCREW, 6-32 X 3/16" NIBS, RH PHIL. SST 2

14 0313410 BRACKET, POWER CORD 1

15 0512185 BOLT, HEX FLANGE, 1/4-20 X 3/8" SST 1

16 0503592 LABEL, GROUND 1

91

Timer Control Board Assembly - 201HT, 201LT

1

2

Front View

4

4

5

6

7

2

8

4

11

9

10

Rear View

14

12

92

13

3