Washtech STARLINE XU 4 Series User manual

OPERATOR MANUAL
XU

GENERAL WARNINGS
Non-compliance with warnings or failure to follow the instructions in this manual can result in
loss of life, severe personal injury and / or serious damage to property.
Before installation, commissioning and / or repair of the machine you must carefully read the
safety instructions and warnings and all warning labels attached to the machine.
Hazards can include high surface temperatures, hot water, caustic detergent, sharp edges
including broken glass and knives left in the wash chamber, and dangerous electrical voltages.
All service work must be carried out by qualified personnel only who ensure compliance with all
local codes and standards including AS/NZS 3500.1.
The electrical supply must be turned off at the wall before accessing the machine for servicing.
All electrical terminals must be covered at all times to prevent access to the terminal.
Appropriate electrical tests must be carried out after any and all service repairs.
IMPORTANT INFORMATION
Failure to comply even partially with the instructions given in this manual will invalidate the
product warranty and relieve the manufacturer of any responsibility. This includes failure to
supply the machine with good quality water at suitable pressure as specified.
The alteration of machine operation or design or replacement of parts not approved by the
manufacturer may void warranties and approvals.
This machine is intended for commercial use only. It is designed for the cleaning of fresh food
waste from cutlery, crockery, glassware, containers and food preparation equipment. Consult
the manufacturer regarding suitability for other applications.
No part of the machine is designed to be stepped upon.
This machine is not a waste disposal unit.
It is essential that operating procedures are followed including adequate pre-rinsing or
scraping of loose soil or waste from washware before it is placed in the machine, and regular
cleaning and maintenance of the machine.
Regular servicing is essential for optimum performance and long machine life. Maintenance by
a dishwasher technician is recommended every 6 months or 15,000 cycles to ensure all
systems are operating correctly and consumable items –such as chemical squeeze tubes –
are replaced prior to degradation of performance and/or failure.
The information contained in this document is checked, reviewed and updated regularly to ensure that it is
accurate and relevant to the model described. However, discrepancies and errors can occur. We welcome your
feedback.
This document is subject to change without prior notice.
Information supplied in this manual is copyright. No part of this work may be reproduced or copied in any form or
by any means, electronic or mechanical without the express permission of Washtech.
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WARNINGS

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2. Warning
3. Contents
4. Safety Instructions
5. Installation Diagram
6. Installation Instructions
8. Installation Checklist
9. Installation Troubleshooting
10. Operator Use Guide
11. Operator Troubleshooting
12. Schematic Diagram
13. Accessories
14. Spare Parts List
15. Notes
CONTENTS

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INSTALLATION
•Use qualified, skilled personnel.
•Follow installation instructions.
•Connect to correct voltage and supply current, and (if applicable for the model) check that the phase rotation
is correct.
•Provide fully accessible Electrical Isolation Switch & water supply valves.
TRAINING AND SUPERVISION
•Read and Understand the Operating instructions and train all staff.
•This appliance must not be operated by children or infirm persons.
•Machine panels must only be removed by suitably qualified and trained personnel –internal hazards include
live electrics and very hot surfaces.
•No part of this appliance is intended for use as a stepladder.
HOT SURFACES
•Some surfaces may be hot or very hot.
CHEMICALS
•Commercial dishwashing detergents are hazardous –handle with care.
•Read and follow the safety information found on the labels of detergent containers and Material Safety Data
Sheets.
•Use protective eyewear and clothing if decanting containers.
HOT WATER
•Do not put hands in wash water which may be over 60°C and contain hazardous caustic detergent.
•Rinse water can be over 90°C.
•Door safety switches are designed for emergency use only.
CLEANING
•Do not hose down the machine or splash water over the exterior.
•Watch for broken glass etc. when cleaning the inside of the machine.
SERVICE/REPAIR
•Under no circumstances should the user attempt to carry out repairs.
•All service/repair work must be carried out by qualified personnel only.
POWER CORD REPLACEMENT
•If the supply cord is damaged, it must be replaced by the manufacturer or its service agent
or a similarly qualified person in order to avoid a hazard.
WARNINGS
Equipment contains dangerous voltages and can be hazardous if installed or operated
incorrectly. Non-compliance with Warnings or failure to follow the instructions contained in this
manual can result in loss of life, severe personal injury or serious damage to property.
Installation and servicing must be carried out by a suitably qualified person in compliance with
all local codes and standards including AS/NZS 3500.1.
SAFETY INSTRUCTIONS

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INSTALLATION DIAGRAM
XU SERIES-4
•Part #: XU4 INST
•Date: 2/8/2023
•Version: 3-A
SERVICES
•A Hot Water 200-350kPa 3/4"
•B Waste Flexihose supplied 25mm
•C Electrical Connection 230V, 50Hz, 1P-N+E~ 15A

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MACHINE POSITIONING
•Unpack machine, check for damage and complete delivery.
•Install machine on sound waterproof self-draining floor
•Use the adjustable feet/legs to ensure that the machine is level.
NOTE: Failure to level the machine correctly may result in leaking during the cycle, overflowing from the
door sill, poor hygiene through the wash tank not being able to drain correctly, and/or visibly uneven
door.
•Allow room for detergent to one side of machine or in adjacent cupboard. 20 litre container requires
approximately W 250mm x D 350mm x H 450 mm, but smaller containers are available from many suppliers.
•Where being installed into cabinetry, allow at least 15mm around the sides and top of the machine to allow the
heat generated by the machine to escape.
•Where installed under benchtops made from laminate, timber or other materials not intended for exposure to
steam ensure machine is installed proud of the benching and/or fit a suitable flashing above.
Isolating switches and valves must be easily accessible and not directly behind the machine.
WASTE
•Connect drain pump hose supplied to vented upstand or sink waste connection.
•To optimise drainage the drain hose will ideally be travel directly up from the machine to >650mm and then
down to a lower drain connection point at approximately no more than 600mm high.
NOTE: Avoid leaving the drain hose coiled on the ground and rising only to reach the connection. This
will result is excess water flowing back into the machine and reduce the expect life of the drain hose.
NOTE: Either copper or PVC may be used for the waste connection –PVC is more resistant to some
harsh detergents. Some authorities suggest that copper is required because the machine rinses at up to
90°C. It is important to note that rinse water mixes with the 65°C wash water before discharge and then
flows into the sink trap where the water is further cooled before entering the drainage plumbing. We
recommend consulting your local authority to ensure your site remains compliant.
POWER
•Electrical supply required as per specification via switched outlet adjacent to machine.
NOTE: Equipment contains dangerous voltages and can be hazardous if installed or
operated incorrectly. Non –compliance with warnings or failure to follow the instructions contained in
this manual can result in loss of life, severe personal injury or serious damage to property.
NOTE: The switch must be easily accessible and therefore not directly behind the machine.
INSTALLATION INSTRUCTIONS

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INLET WATER
Incoming water should be within the following standard requirements:
•Temperature: 65°C.
NOTE: Low temperatures will increase the recovery time between cycles and depending on the
chemical being used, may result in excessive foaming if the machine is started before the wash water is
up to a suitable temperature.
NOTE: Excessively high temperatures may damage the solenoid which can result in flooding should this
component fail. High temperature solenoids are available and can be retrofitted if necessary.
•Connection: 20 mm (3/4” BSP) male – flexible hose supplied.
NOTE: Flush supply line before connection. Poor quality supply or excessive water hardness may affect
performance or damage machine –filtration and/or softening is recommended.
•Flow rate: minimum 20 litres per minute.
•Pressure: between 200 and 350 KPa.
NOTE: If water pressure is above 350kPa fit pressure limiter valve. Do not use small diameter plastic
supply lines.
•Consumption: Approximately 1.5 litres per cycle.
•Backflow prevention: Atmospheric Vacuum Breaker (AVB) fitted standard.
WATER QUALITY REQUIREMENTS
The incoming water should also be within the following parameters:
Hardness ppm pH
min 20 7
max 100 8
Ions Cl- SO4Fe Mn Cu Cl2
Max mg/L 100 400 0.1 0.5 0.05 0.1
NOTE: Levels above or below the stated requirements can be expected to increase component wear
and reduce the expected useful life of the dishwasher. If in doubt, it is best to consult a water specialist
and have the incoming water professionally tested and treated if necessary.
CHEMICAL
•This dishwasher is supplied with Detergent and Rinse Fluid injector pumps which are factory pre-set to a
standard detergent injection
•To connect to chemicals, insert pump inlet hose into containers of commercial low foam detergent and rinse
fluid.
NOTE: Externally adjustable chemical pumps are fitted and pre-set at an average level, these need to
be calibrated on site according to the chemical being used and site specific conditions such as the
water quality and how the machine is being used. Failure to do so may result in excessive dosing which
can result in foaming and overflowing, or insufficient dosing which can cause inferior wash results and
impact components through a build up of grease. If in doubt, contact your chemical company for
assistance.
NOTE: Commercial detergents can be hazardous –read instructions, store safely and handle with care.
Care needs to be taken when changing chemicals, ensuring that the detergent is not accidentally
connected to the rinse fluid inlet line.
NOTE: If uncertain, please consult a chemical specialist for assistance in selecting the right chemicals
and calibrating machine settings to suit these along with your unique site conditions and requirements.
INSTALLATION CHECKLIST
•Complete attached Installation Checklist to ensure machine is installed and running correctly, and operator is
familiar with operating procedures.
INSTALLATION INSTRUCTIONS

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CHECK NOTES
DELIVERY
SUPPLIED COMPLETE? CHECK THERE HAS NOT BEEN ANY TRANSIT DAMAGE
POSITION
LEVEL AND STABLE? ON SOUND, WATERPROOF, SELF-DRAINING FLOOR
WATER
ISOLATOR VALVE FITTED? ACCESSIBLE, ALL FITTINGS SOUND, AND NO LEAKS
TEMPERATURE CORRECT? HOT WATER INLET 65˚C
PRESSURE CORRECT (200 –350 kPa)? LIMITER FITTED IF ABOVE RANGE
FLOW RATE CORRECT (≥ 20L PER MIN)? FLOW RATE AT OR ABOVE MINIMUM RANGE
QUALITY WITHIN REQUIREMENTS? FILTER OR SOFTENER IN PLACE IF OUTSIDE REQUIREMENTS
POWER
ISOLATING SWITCH? FITTED, FUNCTIONAL AND ACCESSIBLE
CORRECT SUPPLY? VOLTAGE, CURRENT, CIRCUIT BREAKER ALL CORRECT
WASTE
CONNECTION TO STANDPIPE/SINK WASTE? CORRECT CONNECTION TO PLUMBING
CHEMICALS
CHEMICAL NAME CONTAINER NO LEAKS PRIMED CALIBRATED
DETERGENT
RINSE FLUID
MACHINE OPERATION
MACHINE RUNNING CORRECTLY? MULTIPLE CYCLES RUN, NO ISSUES
CHEMICAL DOSAGE CORRECT? CORRECTLY FLOWING INTO MACHINE, NO FOAMING
ALL OPERATIONS CORRECT? FILL LEVEL CORRECT, NO DRAINAGE ISSUES
OPERATOR TRAINING
ENSURE THAT THE CUSTOMER HAS BEEN GIVEN THE OPERATION MANUAL AND WALL CHART, AND IS AWARE OF THE IMPORTANCE OF
BOTH USING AND CLEANING THE MACHINE CORRECTLY.
START UP
PRE-RINSE AND RACKING BETTER TO RINSE PLATES THAN REMOVE WASTE FROM MACHINE
MACHINE USE AND CYCLE SELECTION USE LONG CYCLE WHERE POSSIBLE
DRAINING THE MACHINE DRAIN THE MACHINE DAILY
SHUT-DOWN AND DAILY CLEANING CHECK WASH ELEMENTS HAVE COOLED BEFORE CLEANING
WEEKLY MAINTENANCE FULL MACHINE CLEAN INCLUDING WASH/RINSE ARMS
PLANNED SERVICNG IMPORTANCE OF HAVING MACHINE SERVICED REGULARLY
INSTALLATION CHECKLIST

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INSTALLATION TROUBLESHOOTING
DOOR NOT CLOSING PROPERLY
•Level the dishwasher.
MACHINE NOT STARTING OR FILLING
•Ensure water supply to machine is turned on.
•Ensure power supply to machine is turned on.
•Check that the water inlet hose is not twisted or kinked.
CYCLE TAKING TOO LONG
•This machine ships with Thermostop enabled, which allows a cycle to be started at any time, even if the rinse
water is not up to required temperature. To ensure a hygienic result, the wash cycle continues to run until the
rinse temperature reaches the required 83˚C. Then the machine will begin rinsing and complete the cycle.
•Check inlet water temperature is not too low as per our specifications.
•Check power supply, uprating will increase heating power and reduce recovery times.
POOR WASH RESULTS
•Check that there are adequate pre-rinse processes in place and staff use longer cycle options for more
heavily soiled items.
•Ensure high quality non-foaming commercial dishwasher detergent has been connected at the correct
dosage for your site, water quality and application. If uncertain, consult a chemical specialist.
•Check that the wash arm is spinning freely and is not being obstructed.
•Ensure that the wash temperature is between 60°C and 65°C.
•Ensure that water quality is adequate. Consult with a water specialist if not.
CHEMICAL RESIDUE AFTER CYCLE
•Check that nothing is obstructing the wash and rinse arms jets and/or rotation.
•Check detergent dosage is within the requirements.
•Check the rinse fluid dosage is not too high. If uncertain, consult your chemical specialist.
DISHWASHER FOAMING
•Check that water pressure and flow rate to the machine are adequate. Insufficient water supply will effectively
overdose the chemicals, and compromise the rinse performance.
•Ensure there is no other soap being transferred into the machine from the sink.
•Ensure high quality non-foaming commercial dishwasher detergent has been connected at the correct
dosage for your site and application. If uncertain, please consult a chemical specialist.
•Allow wash water to heat to at least 60˚C prior to starting the first cycle as some commercial dishwasher
chemical will foam at low temperatures.
OTHER UNITS HAVE WATER FILTERS AND/OR SCALE ISSUES
•Due to the high temperatures in dishwashers, scale will build up in the wash tank, on the arms and in the rinse
tank. The incoming water should be treated. If uncertain, please consult a water specialist.
•As with combi-ovens, high chloride levels will do irreversible damage to a number of the components inside a
commercial dishwasher. The incoming water should be appropriately treated. If uncertain, please consult a
water specialist.
CYCLE TIMES NOT SUITABLE FOR ITEMS BEING WASHED
•Some sites may require longer or shorter cycles depending on the items being washed and the soil levels.
•Cycle lengths can be adjusted by a qualified service agent. For adjustment instructions refer to the
adjustment section of the service manual for this model.

OPERATOR USE GUIDE
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START
•Turn on at wall.
•Ensure the Wash / Drain Filter Basket (1) is in place and shut the door.
•Press the Power switch, the switch will glow red and the machine will fill automatically.
OPERATION
•Load rack into the machine and shut door.
•Press either Cycle 1 (1min) or Cycle 2 (2min) to start the dishwasher.
•Cycle button glows green while machine operates.
•When Cycle light goes out, the cycle is complete.
NOTE: The machine may be started while the rinse water is being heated –the machine will continue to run
the wash cycle until the rinse water is up to temperature.
SHUT DOWN - EVERY NIGHT
•Open the door, press the Drain switch and leave the door open.
•Allow to drain for approximately 1 minute or until the tank is empty.
•Turn the Drain and then the Power switches off.
•Once the machine has cooled down, clean the wash tank, then remove and rinse Wash / Drain Filter
Basket (1)
•Check and clear any waste from inside the drain sump.
•Replace Wash / Drain Filter back into machine.
CLEANING –AT LEAST ONCE A WEEK
Remove, rinse and replace when machine has cooled down:
Wash / Drain Filter Basket 1
Wash / Rinse Arm Thumbscrew 2
Rinse Arms 3
Wash Arms 4
Unscrew thumbscrew (3) to remove Wash/Rinse Arm.
Inspect and clear all jets in the arm using a small object
such as a toothpick where necessary to remove any
blockages prior to rinsing.
SUGGESTED BEST PRACTICE
Pre-rinse Scrape and/or rinse trays, plates & glasses in cool water.
Chemical Use a good quality non foaming commercial detergent and drying agent –do
not use domestic detergents which will cause the machine to foam.
Service Commercial dishwashers should be serviced at least every 6 months or 15,000 cycles.

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OPERATOR TROUBLESHOOTING
⚫Likely cause Possible cause
* For issues most likely due to incorrect chemical dosages or other chemical issues, we recommend you consult
your chemical supplier and/or a local chemical expert prior to calling in a dishwasher technician.
** For issues that are likely due to poor water quality (scale building up, filters being required on other kitchen
equipment etc.), we recommend you consult a local water specialist prior to calling in a dishwasher technician.
IF PROBLEMS PERSIST CONTACT YOUR SERVICE PROVIDER
ISSUE CAUSE
POOR PRE-SCRAPING CARRY OVER OF SOAP FROM SINK OVERLOADING RACKS INADEQUATE MACHINE CLEANING INSUFFICIENT WATER PRESSURE/FLOW INSUFFICIENT WASH TEMPERATURE WASH/RINSE JETS BLOCKED WASH/RINSE ARMS NOT ROTATING DETERGENT DOSAGE LOW/HIGH* RINSE FLUID DOSAGE LOW/HIGH* POOR WATER QUALITY**
DISHES NOT CLEAN ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ 
STAINING ⚫ ⚫ ⚫
FOAMING ⚫⚫ ⚫  
PROTEIN BLOOM   ⚫  
DIRTY MACHINE ⚫ ⚫    
FOOD RESIDUE ON WARE ⚫   ⚫
FILM/SPOTS ON WARE   ⚫⚫ ⚫ 
DETERGENT RESIDUE ⚫⚫ ⚫
GREASY FILM/NO FIZZ ⚫
HIGH DETERGENT USE ⚫
HIGH RINSE FLUID USE ⚫
WET WASHWARE ⚫⚫ ⚫
SCALE BUILD UP IN MACHINE ⚫⚫
FILTERS ON OTHER EQUIPMENT ⚫

XV/XU SCHEMATIC
•Part #: 120130
•Date: 31/8/2022
•Version: 1-A
SCHEMATIC DIAGRAM
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XU SERIES-4
•Part #: XU4 ACS
•Date: 2/08/2023
•Version: 1-A
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ACCESSORIES

DESCRIPTION PART NO
CABINET & DOOR
•Front Panel 288 20010
•Lower Rear Panel 288 20004
•Door 288 10006
•Door Catch Plunger Assembly 400 10104
CONTROLS & INDICATOR
•Door Reed Switch 600 30183
•Drain Switch 600 30517
•Power Relay 600 30223
•Power Switch 600 30567
•Pressure Switch 600 30478
•Relay 2 pole 240V 600 30080
•Relay Base 600 30081
•Start Button 600 30566
•Temperature Controller 600 30640
•Temperature Display 600 30643
•Temperature Display Loom 600 30646
•Terminal Strip 4 Way 32271
•Timer Electronic 600 30513
HEATING COMPONENTS
•Over Temperature Thermostat 600 30088
•Rinse Element 3 kW 600 30495
•Rinse Tank Assembly 217 10021
•Wash Element 2.5 kW 600 30226
HOSES
•Detergent Hose 600 30148
•Pressure Switch Hose 3067
•Rinse Hose 600 60073
•Drain Hose 600 60105
•Drain Pump Inlet Hose 6197
•Drain Pump Outlet Hose 600 60109
•Wash Pump Inlet Hose 6196
•Wash Pump Outlet Hose 400 90121
PUMPS AND SOLENOIDS
•Detergent Pump 600 30526
•Detergent Squeeze Tube 600 30134
•Rinse Aid Injector 600 30324
•AVB 600 60053
•Solenoid Valve 3342
•Wash Pump
•Drain Pump 600 60102
WASH TANK COMPONENTS
•Drain Pump Filter Assembly 400 10437
•Wash Arm Assembly 400 10458
•Rinse Arm Assembly 400 10457
•Wash / Rinse Arm Bush 400 40064
•Wash Spindle 600 40007
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SPARE PARTS

NOTES
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Information supplied in this manual is
copyright. No part of this work may be
reproduced or copied in any form or by
any means, electronic or mechanical
without the express permission of the
author/publisher
All Washtech products are designed and
manufactured using the internationally
recognised ISO9001 quality management
system, covering design, manufacture
and final inspection, ensuring consistently
high quality.
Washtech continually seeks to develop
and improve our products, thus Washtech
reserves the right to change specifications
and design without prior notice.
Manufactured in New Zealand by:
Washtech Limited
414 Rosebank Road
Avondale
Auckland 1026
NEW ZEALAND
[phone]
[email protected]
washtech.co.nz
©2021 Washtech Limited.
All rights reserved.