Jackson / Dalton Dishwasher HorizonHZ-24 User manual

Brand: Jackson / Dalton Dishwasher

Model: HorizonHZ-24

Category: Dishwashers

Type: User manual

HORIZON HZ-24

INSTALLATION AND OPERATIONINSTALLATION AND OPERATION

MANUALMANUAL

November 16, 2000 P/N 7610-002-32-24

Visit Jackson on the Internet at:

www.jacksonmsc.com

HIGH TEMP SANITIZING

UNDERCOUNTER DISHMACHINE

MANUFACTURERS WARRANTY

ONE YEAR LIMITED PARTS & LABOR WARRANTY

ALL NEW JACKSON DISHWASHERS ARE WARRANTED TO THE ORIGINAL PURCHASER TO BE FREE FROM

DEFECTS IN MATERIAL OR WORKMANSHIP, UNDER NORMAL USE AND OPERATION FOR A PERIOD OF (1) ONE

YEAR FROM THE DATE OF PURCHASE, BUT IN NO EVENT TO EXCEED (18) EIGHTEEN MONTHS FROM THE

DATE OF SHIPMENT FROM THE FACTORY.

Jackson MSC agrees under this warranty to repair or replace, at its discretion, any original part which fails under normal use due to faulty

material or workmanship during the warranty period, providing the equipment has been unaltered, and has been properly installed, main-

tained and operated in accordance with the applicable factory instruction manual furnished with the machine and the failure is reported to

the authorized service agency within the warranty period. This includes the use of factory specified genuine replacement parts, purchased

directly from a Jackson authorized parts distributor or service agency. Use of generic replacement parts may create a hazard and void

warranty certification.

The labor to repair or replace such failed part will be paid by Jackson MSC, within the continental United States, Hawaii and Canada, dur-

ing the warranty period provided a Jackson MSC authorized service agency, or those having prior authorization from the factory, performs

the service. Any repair work by persons other than a Jackson MSC authorized service agency is the sole responsibility of the customer.

Labor coverage is limited to regular hourly rates, overtime premiums and emergency service charges will not be paid by Jackson MSC.

Accessory components not installed by the factory carry a (1) one year parts warranty only. Accessory components such as table limit

switches, pressure regulators, pre rinse units, etc. that are shipped with the unit and installed at the site are included. Labor to repair or

replace these components is not covered by Jackson MSC.

This warranty is void if failure is a direct result from shipping, handling, fire, water, accident, misuse, acts of god, attempted repair by unau-

thorized persons, improper installation, if serial number has been removed or altered, or if unit is used for purpose other than it was origi-

nally intended.

TRAVEL LIMITATIONS

Jackson MSC limits warranty travel time to (2) two hours and mileage to (100) one hundred miles. Jackson MSC will not pay for travel

time and mileage that exceeds this, or any fees such as those for air or boat travel without prior authorization.

WARRANTY REGISTRATION CARD

The warranty registration card supplied with the machine must be returned to Jackson MSC within 30 days to validate the warranty.

REPLACEMENT PARTS WARRANTY

Jackson replacement parts are warranted for a period of 90 days from the date of installation or 180 days from the date of shipment from

the factory, which ever occurs first.

PRODUCT CHANGES AND UPDATES

Jackson MSC reserves the right to make changes in design and specification of any equipment as engineering or necessity requires.

THIS IS THE ENTIRE AND ONLY WARRANTY OF JACKSON MSC. JACKSON’S LIABILITY ON ANY CLAIM OF ANY KIND, INCLUD-

ING NEGLIGENCE, WITH RESPECT TO THE GOODS OR SERVICES COVERED HEREUNDER, SHALL IN NO CASE EXCEED THE

PRICE OF THE GOODS OR SERVICES OR PART THEREOF WHICH GIVES RISE TO THE CLAIM.

THERE ARE NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING FOR FITNESS OR MERCHANTABILITY, THAT ARE NOT SET

FORTH HEREIN, OR THAT EXTEND BEYOND THE DURATION HEREOF. UNDER NO CIRCUMSTANCES WILL JACKSON MSC BE

LIABLE FOR ANY LOSS OR DAMAGE, DIRECT OR CONSEQUENTIAL, OR FOR THE DAMAGES IN THE NATURE OF PENALTIES,

ARISING OUT OF THE USE OR INABILITY TO USE ANY OF ITS PRODUCTS.

ITEMS NOT COVERED

This warranty does not cover cleaning or deliming of the unit or any component such as, but not limited to, wash arms, rinse arms or strain-

ers at anytime. Nor does it cover adjustments such as, but not limited to timer cams, thermostats or doors, beyond 30 days from the date

of installation. In addition, the warranty will only cover the replacement of wear items such as curtains, drain balls, door guides or gaskets

during the first 30 days after installation. Also, not covered are conditions caused by the use of incorrect (non-Commercial) grade deter-

gents, incorrect water temperature or pressure, or hard water conditions.

GENERAL PAGE

Specifications ............................................................................................... 1

Detail of the Data Plate................................................................................. 2

General Notes Section.................................................................................. 3

INSTALLATION INSTRUCTIONS

Unpacking..................................................................................................... 4

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

Electrical Connections.................................................................................. 4

Installation Checklist..................................................................................... 5

OPERATION INSTRUCTIONS................................................................................... 6

PROGRAMMING INSTRUCTIONS............................................................................ 9

ELECTRONIC CONTROLLER BOARD REFERENCE............................................. 10

SCHEMATIC

208-230 V, 50-60 Hz, 3 Phase .................................................................... 11

IMPORTANT INFORMATION DATA SHEET............................................................. 12

TABLE OF CONTENTS

PERFORMANCE/CAPABILITIES

OPERATING CAPACITY (RACKS/HOUR)

RACKS PER HOUR (NSF RATED) 30

DISHES PER HOUR 600

GLASSES PER HOUR 600

OPERATING CYCLE (SECONDS)

NORMAL CYCLE

WASH TIME 82

DRAIN TIME 10

RINSE TIME 11

TOTAL CYCLE TIME 120

PREWASH/PREHEAT CYCLE

PREWASH TIME 20

DRAIN TIME 10

RINSE TIME 11

WASH TIME 82

DRAIN TIME 10

RINSE TIME 11

TOTAL CYCLE TIME 150

TANK CAPACITY (GALLONS)

WASH TANK (MINIMUM) 1.3

BOOSTER TANK 3

TEMPERATURES

WASH---°F (MINIMUM) 150

RINSE---°F (MINIMUM) 180

ELECTRICAL REQUIREMENTS

WASH PUMP MOTOR HORSEPOWER 3/4

RINSE BOOSTER HEATER ELEMENT 10KW@230V

WATER REQUIREMENTS

INLET TEMPERATURE (Minimum) 140°F

GALLONS PER RACK 1.3

GALLONS PER HOUR(AT 80% CAPACITY) 31.2

WATER LINE SIZE I.P.S. (Minimum) 1/2”

DRAIN LINE SIZE I.P.S. (Minimum) 1”

FLOW PRESSURE P.S.I. (Optimum) 20

MACHINE DIMENSIONS

WIDTH

(

INCLUDING CHEMICAL DISPENSING EQUIPMENT)

30 1/2”

DEPTH 22 5/8”

DEPTH (WITH DOOR OPEN) 39 7/8”

HEIGHT 33 1/4” TO 34 1/4”

CLEARANCE HEIGHT INSIDE 15 1/4”

MINIMUM WALL CLEARANCE 3 1/2”

SPECIFICATIONS FOR THE HORIZON HZ-24

VOLTAGE

PHASE

MACHINE

TOTAL

AMPERAGE

REQUIRED

ELECTRICAL

CIRCUIT

208

45.3

60 Amp

230

49.5

70 Amp

208

28.7

40 Amp

230

31.1

40 Amp

The data plate is located on the right side front corner, directly on the shroud. Under no circumstances should the data plate be

removed from the unit. The data plate is essential in identifying the particular characteristics of your machine and is of great benefit

to installers, operators, and maintenance personnel. In the event the data plate is removed, copy the essential information on the

final page in this manual for reference before installation. Do not use the above data plate to represent your dishmachine. The data

plate above is a generic representation used only to show you where to locate information.

DETAIL OF THE HORIZON HZ-24C DATA PLATE

MODEL:

SERIAL #

WASH TEMPERATURE (MIN.)

RINSE TEMPERATURE (MIN.)

WASH CYCLE TIME

RINSE CYCLE TIME

FLOW PRESSURE

INCOMING WATER TEMPERATURE

150° F

180° F

82 SEC

10 SEC

15-25 PSI

110° F

Connect to minimum 50 ampere supply - circuit

protected with maximum 50 A nontime - delay

type fuse or overcurrent protector.

BOOSTER HEATER

WASH MOTOR 3/4 HP

230 VOLT 60 HERTZ 3 PHASE 3 WIRE

27.7 AMP

4.7 AMP

TOTAL LOAD 32.4 AMP

11.0 KW

MANUFACTURER’S

LOGO

MODEL DESIGNATION

(I.E. “HORIZON HZ-24C”)

AMPERAGE LOAD

INFORMATION

MINIMUM PARAMETERS

(SEE NOTE 1)

MANUFACTURERS

ADDRESS INFORMATION

NSF LOGO (SEE NOTE 3)

UL LOGO (SEE NOTE 2)

Before connecting, operating, or adjusting any of the dishmachines covered in this manual, please carefully read through the entire

manual to familiarize yourself with the machine and its proper operation. This manual contains important operating, safety, and main-

tenance information concerning your dishmachine. You must follow the instructions and guidelines provided in this manual to ensure

that your warranty remains in effect.

FOR SERVICE PERSONNEL: Jackson MSC Inc. provides technical support for all of the dishmachines detailed in this manual. We

strongly recommend that you refer to this manual before making a call to our technical support staff. Please have this manual with you

when you call so that our staff can refer you, if necessary, to the proper page. Technical support is available from 8:00 a.m. to 5:00 p.m.

(EST), Monday through Friday. Technical support is not available on holidays. Contact technical support toll-free at 1-888-800-5672.

Please remember that technical support is available for service personnel only. Non-service personnel should refer to the list of pro-

vided service agencies in this manual for local service support.

NOTES CONCERNING THE HORIZON HZ-24 DATA PLATE:

NOTE 1: This area of the data plate denotes the minimum parameters that must be met in order for your dishmachine to operate at the

designed level of efficiency. Not meeting the required parameters can result in substandard performance of the dishmachine. Do not

refer to the data plate example in this manual for the parameters of your machine; instead, refer to the data plate affixed to the machine.

If you are unsure of whether or not you are meeting the required minimum parameters, contact your nearest Jackson representative.

NOTE 3: The UL logo on the data plate indicates that this machine is Listed by Underwriters Laboratories Inc. Representative sam-

ples of this product have been evaluated by UL and meet applicable standards and requirements. Dishmachines are evaluated under

UL Standard 921. For more information concerning the UL logo and UL standards in general, you may write to: Underwriters

Laboratories Inc., 333 Pfingsten Road, Northbrook, IL., 70072; or you may visit their website at www.ul.com.

NOTE 3: The NSF logo on the data plate indicates that this machine has been approved to be listed under NSF Standard 3 by NSF

International Inc. All of ECOLAB’S standard 3 approved dishmachines are listed on the NSF website at www.nsf.org. For more infor-

mation concerning NSF International, their testing procedures and their standards in general, you may write to: NSF

International Inc., 789 Dixboro Road, Ann Arbor, MI., 48105.

GENERAL NOTES SECTION

VISUAL INSPECTION: Before installing the unit, check the con-

tainer and machine for damage. A damaged container is an indi-

cator that there may be some damage to the machine. If there is

damage to both the container and machine, do not throw away the

container. The dishmachine has been inspected and packed at

the factory and is expected to arrive to you in new, undamaged

condition. However, rough handling by carriers or others may

damage the unit while in transit. If this situation occurs, do not

return the unit to Jackson; contact the carrier and ask them to

inspect the damage to the unit and to complete an inspection

report. You must contact the carrier within 48 hours of receiving

the machine. Also, contact the dealer through which you pur-

chased the unit.

UNPACKING THE DISHMACHINE: Once the machine has been

removed from the container, ensure that there are no missing

parts from the machine. This may not be obvious at first. If it is dis-

covered that an item is missing, contact Jackson immediately to

have the missing item shipped to you.

LEVEL THE DISHMACHINE: Ensure that the unit is level from

side to side and from front to back before making any connec-

tions. The unit comes with adjustable bullet feet, which can be

turned using a pair of pliers or by hand if the unit can be raised

safely. Failure to level the dishmachine may cause premature

wear or decrease washing performance.

PLUMBING THE DISHMACHINE: All plumbing connections must

comply with all applicable local, state, and national plumbing

codes. The plumber is responsible for flushing the incoming water

line prior to connecting it to remove all foreign debris that may get

trapped in the valves or cause an obstruction. Any valves that are

fouled by matter left in the water line and the expenses resulting

are not the responsibility of the manufacturer.

CONNECTING THE DRAIN LINE: The drain for the Horizon HZ-

24 is a pumped (pressure) drain capable of pumping waste water

to a height of 24 inches from the floor to the kitchen’s drain sys-

tem. The dishmachine is supplied with an 8 foot long hose that

extends from the rear side of the machine. There must also be an

air gap between the machine drain line and the floor sink or drain.

If a grease trap is required by code, it should have a flow capaci-

ty of 12 gallons per minute.

WATER SUPPLY CONNECTION: Read the section entitled

“PLUMBING THE DISHMACHINE” above before proceeding.

Connect the flexible hose on the machine to the incoming water

supply line. The water supply is 1/2” pipe size (minimum). It is rec-

ommended that a water shut-off valve be installed between the

main supply and the machine to allow access for service. The

water supply line must be capable of 20 PSI “flow” pressure at the

recommended temperature indicated on the data plate.

In areas where the water pressure fluctuates or is greater than the

recommended pressure, it is recommended that a water pressure

regulator be installed.

Do not confuse static pressure with flow pressure. Static pressure

is the line pressure in a “no flow” condition (all valves and services

are closed). Flow pressure is the pressure in the fill line when the

fill valve is opened during the cycle.

It is also recommended that a shock absorber (not supplied with

the Horizon HZ-24) be installed in the incoming water line.

This prevents line hammer (hydraulic shock), induced by the sole-

noid valve, from causing damage to the equipment.

PLUMBING CHECK: Slowly turn on the water supply to the

machine after connecting the incoming fill line and the drain line.

Check for leaks and repair as required. Leaks must be repaired

prior to placing the machine in operation.

ELECTRICAL POWER CONNECTION: Electrical and grounding

connections must comply with the applicable portions of the

National Electrical Code ANSI/NFPA 70 (latest edition) and/or

other electrical codes.

Disconnect electrical power supply and place a tag at the discon-

nect switch to indicate that you are working on the circuit.

The dishmachine data plate is located on the right side and to the

front of the machine. Refer to the data plate for machine operat-

ing requirements, machine voltage, total amperage load and seri-

al number.

The Horizon model HZ-24 machine is equipped with a 10 foot

long, flexible cord for the incoming power. The end of this cord

must be connected to the corresponding terminals at the circuit

disconnect box by a qualified electrician according to local electri-

cal codes. The colors for the wires within this cable are L1=black,

L2=red, L3=white, Ground=green.

It is recommended that “DE-OX” or another similar anti-oxidation

agent be used on all power connections.

VOLTAGE CHECK: Ensure that the power switch is in the OFF

position and apply power to the dishmachine. Check the incoming

power at the terminal block and ensure it corresponds to the volt-

age listed on the data plate. If not, contact a qualified service

agency to examine the problem. Do not run the dishmachine if the

voltage is too high or low. Shut off the service breaker and mark it

as being for the dishmachine. Advise all proper personnel of any

problems and of the location of the service breaker. Replace the

control box cover and tighten the screws.

INSTALLATION INSTRUCTIONS

CHECK OFF THE FOLLOWING ITEMS AS THEY ARE COMPLETED BEFORE PROCEEDING TO OPERATION OF DISHMA-

CHINE.

Has the dishmachine been checked for concealed/hidden damage?

Has the dishmachine and the surrounding area been properly vented in accordance with all applicable codes?

Has the dishmachine been properly leveled?

Has the drain plumbing been installed with an air gap?

Has the service voltage been checked to ensure that it meets the electrical requirements listed on the dishma-

chine’s data plate?

Has the dishmachine been properly grounded?

Has the dishmachine circuit breaker/service breaker been sized correctly, given the dishmachine’s load, and has it

been marked clearly and identified to all pertinent personnel?

Has the incoming water supply been flushed for debris?

Is the hot water supply at the minimum temperature as indicated on the dishmachine data plate?

Is the incoming water supply at 20 PSI?

Is the incoming water supply line at 1/2” minimum?

Are the chemical supplies full and the chemical tubes installed in the proper supply containers?

Have the peristaltic-pumps been primed?

Have the pump intake strainers been installed?

Have the wash arms been installed?

Has the lower rinse arm been installed?

INSTALLATION CHECKLIST

OPERATIONAL START-UP & CHECK: Before proceeding with

start-up, verify the following:

1. Open the doors and verify that the wash tank strainer and

pump intake strainer are correctly installed in the sump.

2. Check that the upper rinse nozzles are securely screwed

into their receptacles.

3. Check that the plugs are securely screwed into the ends of

both wash arms and the rinse arm.

4. Check that the wash arms are securely screwed into the

stationary bases and that they rotate freely.

5. Check the levels in all chemical containers and replace if

necessary.

INSTALLATION/INITIAL START-UP PROCEDURE:

1. Turn on Dishmachine

a) Turn on the incoming power to the machine at the

circuit disconnect box. The display will indicate

OFF.

b) Turn on the dishmachine by pressing the PUSH

ON/PUSH OFF button. The red POWER light will

turn on.

2. Load Chemicals and Prime Dispensing Pumps.

a) The display will indicate REFILL CHEMICALS AND

PRIME PUMPS. Place detergent and rinse aid

chemical bottles in the holder. Place the pick-up

tube attached to the red chemical line in the deter-

gent bottle, and the pick-up tube attached to the

clear chemical line in the rinse aid bottle. Prime the

detergent pumps by pressing the DET. PRIME or

RINSE AID PRIME buttons. Hold the button until

a steady flow of chemical is seen exiting the corre-

sponding peristaltic pump. After both pumps are

primed, the display will indicate HEATER DISABLED.

3. Fill Rinse Booster Heater with Water

a) Before the heater element can be energized, the

rinse booster heater must be initially filled with

water. Damage to the heater element will occur if

the element is not submerged in water. To initially

fill the booster heater with water:

i) Press and hold the PROGRAM button.

ii) The display will indicate ENTER CODE. Press

CYCLES, DELIME, ENTER and CYCLES.

iii) The display will indicate PROG DRAIN/FILL.

Repeatedly press the PROGRAM button until

ENGINEERING is displayed. Press ENTER to

enter the engineering mode.

iv) Repeatedly press the PROGRAM button until

PRESS ENTER TO OPEN FILL is displayed.

v) Press and hold the ENTER button to turn on

the incoming water solenoid valve. Continue

holding the button until you hear water enter-

ing the wash chamber through the rinse arms,

then release the button. The rinse booster

heater is now filled with water.

vi) Press the PROGRAM button until PRESS

ENTER TO EXIT is displayed. Press the

ENTER button to exit the engineering mode.

vii) Repeatedly press the PROGRAM button until

EXIT is displayed. Press the ENTER key to

exit the programming mode.

4. Enable Heater Element

a) For the initial start-up only, the heater element must

be enabled. The machine is shipped from the facto-

ry with the heater element disabled. This is done to

ensure that the heater element is not damaged by

energizing the element without the element being

submerged in water. To enable the heater element:

i) Enter the programming mode by pressing and

holding the PROGRAM button.

ii) The display will indicate ENTER CODE. Press

CYCLES, DELIME, ENTER and CYCLES.

iii) The display will indicate PROG DRAIN/FILL.

Repeatedly press the PROGRAM button until

SYSTEM is displayed. Press ENTER to enter

the system programming mode.

iv) Repeatedly press the ENTER button until

HEATER ELEMENT IS DISABLED is dis-

played.

v) Press the DELIME button to change the dis-

play to HEATER ELEMENT IS ENABLED.

vi) Press the PROGRAM key to exit the system

programming mode. You should hear the

heater contactor close.

vii) Repeatedly press the PROGRAM button until

EXIT is displayed. Press the ENTER button

to exit the programming mode.

viii) The display will indicate HEATING WATER.

OPERATING INSTRUCTIONS

5. Adjust Dishmachine Fill Level.

a) Once the temperature in the rinse booster heater

has reached its preset value, the incoming water

solenoid valve will open to fill the wash tank with

water (FILLING, the time remaining for the fill, and

the incoming water PRESSURE will be displayed

during the fill sequence).

b) The display will then indicate OPEN DOOR. Open,

and then close the door. The display will indicate

PRESS START KEY TO START CYCLE. Press the

PRESS TO START button.

c) The machine will run a complete cycle. At the end

of the cycle, open the door and observe the water

level in the wash tank. The water level should be at

the top of the sump, just below the bottom of the

wash tank strainer.

d) In the programming section, increase or decrease

the FILL time (PROG DRAIN/FILL menu) as neces-

sary.

6. Adjust Dishmachine Drain Time.

a) Open the door, remove the wash tank strainer, and

observe the sump area immediately after the

machine has completed the drain cycle (just before

the start of the rinse cycle).

b) In the programming section, adjust the DRAIN time

(PROG DRAIN/FILL menu) as necessary. Allow

enough time for the machine to completely drain

before the rinse begins. Avoid making the drain

time too long, which will unnecessarily lengthen the

total cycle time.

7. Adjust Dishmachine Flush Time.

a) The FLUSH will rinse out the detergent residue and

soils in the wash tank before the rinse begins. The

FLUSH time is the time that the drain valve will

remain open at the beginning of the rinse cycle.

Avoid making the flush time too long, which will

increase the water usage per machine cycle.

b) In the programming section, increase or decrease

the FLUSH time (PROG DRAIN/FILL menu) as nec-

essary.

8. Measure and Adjust Chemical Concentrations (see pro-

gramming instructions).

9. Check all water and drain fittings for leaks.

10. Instruct machine operators on proper cleaning and

operating procedures.

GENERAL OPERATION SEQUENCE:

CAUTION: Water must be in the wash tank sump while the wash

pump is running in order to avoid damage to the pump seal.

Close the machine's door. Turn the machine on by pressing the

PUSH ON/PUSH OFF button. The red power light will be illumi-

nated. The display will indicate HEATING WATER while the rinse

water is heated in the booster heater. This heating process may

take several minutes, depending on how long the machine has set

idle.

If the water in the booster heater has not reached the specified

temperature after ten minutes, the booster heater will be turned off

and RINSE TANK ERROR, CALL FOR SERVICE will be dis-

played.

When the water in the booster heater reaches the specified tem-

perature, the machine will automatically fill the wash sump with

water (FILLING, the time remaining for filling, and the incoming

water flow PRESSURE will be indicated on the display). The min-

imum water level should be just at the top of the wash tank sump.

To adjust the water level, see programming instructions.

The display will indicate OPEN DOOR. Open the door and insert

a rack of soiled dishes. The display will indicate CLOSE DOOR.

Close the door and the display will indicate PRESS START KEY

TO START CYCLE. Press the PUSH TO START button to begin

the wash cycle. The wash cycle will begin and the yellow cycle

light will be illuminated.

The machine will not run if either supply of detergent or rinse aid

chemicals is depleted. When this happens, the display will indi-

cate REFILL CHEMICALS AND PRIME PUMPS. Refill or replace

the detergent or rinse aid chemical bottles in the holder. Place the

pick-up tube attached to the red chemical line in the detergent bot-

tle, and the pick-up tube attached to the clear chemical line in the

rinse aid bottle. Prime the detergent pumps by pressing the DET.

PRIME or RINSE AID PRIME buttons. Hold the button until a

steady flow of chemical is seen exiting the corresponding dis-

pensing pump.

The HORIZON HZ-24 dishwasher is equipped with a unique fea-

ture that helps to ensure proper sanitization of the ware during the

wash cycle.

The cycle begins with a prewash sequence. The display indicates

the PREWASH TEMPERATURE. Detergent is dispensed at the

beginning of the prewash sequence. After this prewash sequence,

which is 20 seconds long, if the temperature of the wash tank

water is below 150°F, the machine will automatically drain the

wash water, and refill the wash tank with heated rinse water

before the wash sequence will begin. This usually occurs after the

machine has been setting idle for some time and the wash cham-

ber and the water in the wash tank sump have been allowed to

cool. When the machine is used more often, the wash tank water

will remain above 150°F at the end of the prewash sequence, the

drain and fill steps will be skipped, and the prewash sequence will

immediately begin.

OPERATING INSTRUCTIONS (CONTINUED)

During the wash sequence, the display will indicate the WASH

TEMPERATURE. If the wash water was drained at the end of the

prewash sequence, detergent will be dispensed at the beginning

of the wash sequence. At the completion of the wash sequence,

the water in the wash tank sump will be drained (DRAINING will

be displayed). The dishes will then be rinsed with hot water from

the rinse tank booster heater (RINSE TEMPERATURE and

incoming water PRESSURE will be displayed). The rinse aid dis-

pensing pump will run during the entire rinse cycle to inject rinse

aid into the rinse water spraying system.

The HORIZON HZ-24 dishmachine is equipped with another

unique feature that helps ensure proper sanitization of the ware

during the rinse cycle.

At the end of the wash cycle, if the booster heater has not reached

the specified temperature (due to a problem with the heater ele-

ment or incoming water that is too cold), the machine will auto-

matically extend the wash cycle to allow time for the booster

heater to recover (EXTENDING WASH will be displayed) and then

the rinse cycle will be run.

If the water in the booster heater has not reached the specified

temperature after three minutes of extended wash, the machine

will stop and RINSE TANK ERROR, CALL FOR SERVICE will be

displayed. Turn off the machine and call for service.

The cycle is completed at the end of the rinse cycle. The CYCLE

LIGHT will be turned off and OPEN DOOR will be displayed.

Open the door, remove the clean dishes and allow them to air dry.

If the machine is equipped with a power vent option, the vent will

run at the end of the rinse cycle (VENTING will be displayed). The

cycle light will remain illuminated during the venting cycle, indicat-

ing to the operator that the door should not be opened. If the door

is opened during the venting sequence, the cycle will end, and the

cycle light will be turned off.

If the door is opened any time during a cycle, the cycle will restart

from the beginning of the wash cycle when the door is closed

again.

The cycle counter will only increment when cycles are fully com-

pleted. To display the number of cycles completed, ensure that the

machine is idle (between cycles), press the CYCLES button on

the keypad.

SHUT DOWN AND CLEANING: To turn off the machine, press

the PUSH ON/PUSH OFF button. The machine will automatically

drain the water from the wash tank sump (DRAINING will be dis-

played), and then the machine will turn off (OFF will be displayed

and the POWER light will turn off).

Remove, clean and reinstall the upper and lower wash arms.

Remove, clean and reinstall the lower rinse arm.

Periodically, remove, clean, and reinstall the upper rinse nozzles.

Remove, clean and reinstall the wash tank and wash sump strain-

ers.

PRIMING THE RINSE AID DISPENSING PUMP: To prime the

peristaltic pump that dispenses the rinse aid chemical, press and

hold the RINSE AID PRIME button on the keypad. The machine

must be idle (between cycles) for this prime button to be active.

PRIMING THE DETERGENT DISPENSING PUMP: To prime the

peristaltic pump that dispenses the detergent chemical, press and

hold the DET.(ERGENT) PRIME button on the keypad. The

machine must be idle (between cycles) for this prime button to be

active.

DELIMING OPERATIONS: The Horizon HZ-24 machine has a

pre-programmed delime sequence which will lead the operator

through the steps required to properly delime the machine.

To begin, the machine must be OFF. Press and hold the green

DELIME button on the keypad. The machine will automatically fill

with fresh water (FILLING will be indicated on the display). The

display will then indicate to OPEN DOOR - ADD LIME-A-WAY

(delime chemical agent). Open the door and add the delime chem-

ical agent. The display will indicate CLOSE DOOR TO START

DELIME. When the door is closed, the wash pump will turn on to

circulate the delime agent throughout the machine. At anytime,

the door can be opened in order to inspect the inside of the

machine. The wash pump will restart when the door is closed. The

display will indicate PRESS DELIME TO STOP CYCLE. When the

DELIME button on the keypad is pressed, the water in the sump

will be drained (DRAINING is displayed). The sump will then be

filled with fresh water (FILLING is displayed), and the wash pump

will be turned on in order to rinse the inside of the machine (RINS-

ING is displayed). At the completion of this rinse cycle, the sump

will be drained (FINAL DRAIN is displayed), and the machine

turned off.

OPERATING INSTRUCTIONS (CONTINUED)

PROGRAMMING INSTRUCTIONS

To access the programming mode, the machine must be ON, and

idle (between cycles). Press and hold the PROGRAM button on

the keypad. The display will prompt to ENTER CODE. At this

prompt, enter the keys corresponding to the access

code(CYCLES, DELIME, ENTER, CYCLES). Once in the pro-

gramming categories, the PROGRAM button is used to scroll

between the programming categories, the ENTER button is used

to select a program section or parameter. To change the value of

a parameter, use the DELIME button to increase the value of a

parameter, and the CYCLES button to decrease the value of the

parameter. To confirm a change to a programmable value, press

the ENTER button. To abort or escape out of a change, press the

PROGRAM button.

Once in the programming mode, if there have been no keypad

inputs for approximately 45 seconds, the system will automatical-

ly exit out of the programming mode.

All time adjustments are in seconds.

The following parameters can be adjusted in the programming

mode:

1. In the PROG(RAM) DRAIN/FILL section:

a) FILL TIME - Length of fill/rinse cycles. The minimum

water level should be just at the top of the wash

tank sump, just below the wash tank strainer.

b) FLUSH TIME - Time of overlap between drain and

fill times at the beginning of the rinse cycle.

c) DRAIN TIME - Time that drain is open after the

wash cycle.

2. In the PROG(RAM) CHEMICAL section:

a) RINSE AID - Rinse aid pump speed (as a percent

age of full speed) which controls the concentration

of rinse aid dispensed, (during the final rinse only-

rinse aid is not dispensed during the rinse after the

PREWASH cycle).

b) DETERGENT PREWASH - Time during the prewash

cycle that the detergent pump is on to dispense

detergent into the wash tank.

c) DETERGENT WASH - Time during the wash cycle

that the detergent pump is on to dispense detergent

into the wash tank.

3. In the SYSTEM section:

a) DETERGENT DELAY PREWASH - The delay time

from the start of the prewash cycle to the start of the

detergent dispensing.

b) DETERGENT DELAY WASH - The delay time from

the start of the wash cycle to the start of the deter-

gent dispensing.

c) RINSE AID DISPLAY - Delay time from the start of

rinse cycle to the start of the rinse aid dispensing.

d) DISPLAY IN FAHRENHEIT or CELSIUS - Selects

the unit of measurement for water temperature dis

play. The selection options are FAHRENHEIT and

CELSIUS.

e) RINSE TANK TEMPERATURE - When the water in

the rinse water booster heater reaches this value,

the heating element will be turned off.

f) ENABLE/DISABLE HEATER ELEMENT - Selects

whether or not the rinse water booster heater ele-

ment can be energized. The selection options are

ENABLE or DISABLE.

g) VENT TIME - Time after the completion of the rinse

cycle that the vent output signal will be energized.

4. The ENGINEERING section is used to when trouble-

shooting problems with the machine. In the ENGI-

NEERING section:

a) TOTAL WASH CYCLES - This counter accumulates

the total number of cycles which the machine has

been run. This counter cannot be reset.

b) PRESS ENTER TO:

i) RUN PUMP - Press and hold the ENTER but-

ton to run the pump motor. Release the

ENTER button to stop the pump.

ii) OPEN DRAIN - Press and hold the ENTER

button to energize (open) the drain valve.

Release the ENTER button to close the valve.

iii) OPEN FILL - Press and hold the ENTER but

ton to energize (open) the fill water valve sole-

noid. Release the ENTER button to de-ener-

gize the solenoid.

iv) OPEN VENT - Press and hold the ENTER but

ton to energize the vent output signal.

Release the ENTER button to de-energize the

signal.

5. RESET COUNTS - The system will display PRESS

ENTER TO CLEAR COUNTS. Press the ENTER

button on the keypad to reset the counter or press

the PROGRAM button to exit without resetting the

counter.

6. EXIT - Press the ENTER button on the keypad to

exit the programming mode.

The HORIZON HZ-24 dishmachine uses a microprocessor-based electronic controller to control function of the machine. The micro-

processor is pre-programmed at the factory to run a machine that is installed in a typical application. A LCD (liquid crystal display) dis-

play is used to indicate the status of the machine.

The electronic controller board with LCD display controls all timing functions. The controller board is connected to the interface board.

It sends signals to the interface board to turn components on and off. The remaining electrical control components in the machine are

connected to the interface board.

To aid in troubleshooting, the interface board contains six red LED (light emitting diodes). These diodes are illuminated whenever the

output signal to the corresponding control item is ON. The following example will illustrate the troubleshooting sequence that should be

used for all electrical control components. The wash pump runs at the first sequence of every cycle. The LED corresponding to the

wash pump motor contactor will be ON when the pump is to be On. If the LED is ON, and the pump motor is not running, measure the

voltage at the pump motor contactor coil (when the LED is on, meaning voltage should be applied to the coil from the interface board).

If there is no voltage, then replace the interface board. If there is voltage, then there is a problem in the pump motor and pump motor

contactor. If the display indicates that the machine is in a wash cycle, and both the pump motor is not running and the LED is not ON,

check the continuity of the cable that connects the controller board to the interface board. If continuity exists, replace the controller

board. If the controller board has been replaced and the problem still exists, replace the interface board.

The interface board contains six triacs, which are essentially electronic relays. Use a multimeter to verify that the interface board out-

put is supplying voltage to a control item (solenoid valve, peristaltic pump, motor contactor, etc.). During any troubleshooting, it is crit-

ical to remember that a 208-240 volt signal will always be measured at the outputs of the interface board (pins 1 through 8 on con-

nector J4) if the corresponding load (solenoid valve, peristaltic pump, motor contactor, etc.) is not connected to the output. To avoid

false readings, the control item that is being tested must be connected to the interface board output.

ELECTRONIC CONTROLLER BOARD REFERENCE

Drain Valve LED

Wash Pump LED

Rinse/Fill LED

Heater LED

Vent LED

Detergent Dispensing Pump LED

HORIZON HZ-24

ELECTRICAL DIAGRAM

208-240 volt, 50-60 hertz, 1 and 3 phase

Jackson / Dalton Dishwasher HorizonHZ-24 User manual

Brand: Jackson / Dalton Dishwasher

Model: HorizonHZ-24

Category: Dishwashers

Type: User manual

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Jackson / Dalton Dishwasher HorizonHZ-24 User manual

Jackson / Dalton Dishwasher HorizonHZ-24 User manual

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