Washtech XP Series User manual

XP
PASSTHROUGH DISHWASHER
SERVICE MANUAL

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Service Manual XP3
2
Revision 1F

Contents
Safety Instructions....................................................................................................................... 4
Installation....................................................................................................................................... 5
Installation Diagram ............................................................................ 7
Installation Checklist........................................................................... 8
Maintenance Checklist........................................................................9
Dishwashing Procedures..........................................................................................................10
Troubleshooting Chart............................................................................................................. 11
Operating Instructions ............................................................................................................. 12
Components................................................................................................................................. 13
Location and Access ...........................................................................13
Rinse Thermostat............................................................................... 14
Wash Thermostat................................................................................15
Solenoid Valve..................................................................................... 16
Pressure Switch...................................................................................17
Wash Pump.......................................................................................... 18
Detergent Pump................................................................................. 19
Rinse Aid Injector................................................................................20
Electronic Timer ..................................................................................21
Assembly & Electrical Diagrams............................................................................................26
Wiring Tray Assembly........................................................................26
Control Panel Assembly ................................................................... 27
Wash System.......................................................................................28
Rinse System........................................................................................29
Wash Arm Assembly.......................................................................... 30
Rinse Tank Assembly .........................................................................31
Door Link Assembly ...........................................................................32
Rack Slide Assembly ..........................................................................33
Schematic Diagrams..........................................................................34
Spare Parts....................................................................................................................................36
Accessories .................................................................................................................................. 38
Appendices....................................................................................................................................39
Rinse Pump Retrofit..................................................................................... 41
Drain Pump Retrofit........................................................................................42
Revisions ........................................................................................................................................41
Notes...............................................................................................................................42
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7
Machine Positioning
•Unpack machine, check for damage and complete delivery.
•Install machine on sound waterproof self-draining floor and use adjustable feet to level
machine.
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.
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 above 350kPa fit pressure limiter valve (LPV). Do not use small diameter plastic
supply lines.
•Consumption: Approximately 2.6 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.
Power
•Electrical supply required is 15A 240V 50Hz via switched outlet adjacent to machine.
•Easily upgradeable to three phase 15A 415V 50Hz.
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.
Installation Instructions
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Chemical
•This dishwasher is supplied with Detergent and Rinse Fluid injector pumps.
•To connect to chemicals, insert pump inlet hose into container 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 this along with your unique site
conditions and requirements.
Waste
•Connect drain pump hose supplied to upstand or sink waste connection.
•With a standard trap the drain connection height will be about 580mm below the bench
height on the model (320mm above floor with door open height at 900mm).
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 trap where the
water is further cooled before entering the drainage plumbing. We recommend
consulting your local authority to ensure your site remains compliant.
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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Installation Diagram
XPD Installation Diagram
•Part #: WXP0031
•Date: 16-07-19
•Version: 1-A
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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 (1P/15A 240V 50Hz)? VOLTAGE, CURRENT, CIRCUIT BREAKER ALL CORRECT
WASTE
CONNECTION TO STANDPIPE/SINK WASTE? CORRECT CONNECTION TO PLUMBING
SUITABLE AIR GAP? REFER INSTALLATION INSTRUCTIONS - WASTE
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 REGULARLY7
Installation Checklist
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Service Manual XP3
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