Washtech UD User manual

UD
Operator Manual
UD High Performance Undercounter
Dishwasher

WARNING
Before installation and commissioning, you must read the safety instructions and
warnings carefully and all the warning labels attached to the equipment.
IMPORTANT
Failure to comply (even partially) with the instructions given in this manual will
invalidate the product warranty and relieves the manufacturer of any responsibility.
IMPORTANT
The alteration of machine operation, design or the replacement of parts not
approved by the manufacturer may void warranties and approvals.
We have checked that the contents of this document correspond to the model described. There may be
discrepancies nevertheless, and no guarantee can be given that they are completely identical. The information
contained in this document is reviewed regularly and any necessary changes will be included in the next
edition. We welcome suggestions for improvement.
Document 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 the author / publisher.
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Safety Instructions
WARNING
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
Use qualified, skilled personnel
Follow installation instructions
Connect to correct voltage and supply current
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
This appliance is not 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
Power Cord Replacement
If the supply cord is damaged, it must be replaced by the manufacturer
or its service agent or a similar qualified person in order to avoid a
hazard

Installation
WARNING
Installer must be suitably qualified and ensure compliance with all local codes and
standards including AS/NZS 3500.1.
Failure to comply even partially with installation instructions may void the
warranty.
Positioning
Unpack machine, check for damage and complete delivery. Install machine on
sound waterproof self-draining floor and use adjustable feet to level machine.
Adjacent surfaces should be heat resistant and moisture proof, especially benchtop
lower surfaces above undercounter machines. Allow room for detergent to one
side of machine or in adjacent cupboard. 20litre container requires about 450H x
250W x 350D, but smaller containers are available from many suppliers.
Hot Water Supply
Temperature 65°C ± 5°C
Pressure 200 KPa = 30 Psi.
Connection 20 mm (3/4” BSP) male
Flow rate minimum 20 litres per minute
Water consumption 2.6 litres per cycle approximately
Backflow prevention DCV = Dual Check Valve supplied with machine
Pressure limiter may be required. Don’t use small diameter plastic supply lines.
FLUSH supply line before connection. Connect supplied DCV to water supply.
Poor quality supply or excessive water hardness may affect performance or damage
machine – filtration and/or softening is recommended.
Waste Drain pump is fitted – refer installation diagram.
Power Electrical supply required is 15A 240V 50Hz via switched outlet adjacent to
machine, which is supplied with cord set including 15A plug.
Detergent Insert detergent pump inlet hose into container of commercial low foam detergent.
The detergent hoses will be primed during filling of the wash tank.
Detergent pump is set to operate for 12 seconds at the beginning of the wash
cycle. This time can be adjusted in User Settings of the keypad controller. Press
both Up and Down keys on the keypad for a few seconds to access the User
Setting menu and follow onscreen instructions.
Commercial detergents can be hazardous – read instructions and handle with care.
Rinse Aid
Insert injector inlet hose into rinse aid container. Check amount of fluid rising up
inside pipe during pulse at start of rinse cycle. Rotate Adjusting screw clockwise to
reduce flow and anticlockwise to increase flow.
Installation Checklist
Complete attached Installation Checklist to ensure machine is installed and
running correctly, and operator is familiar with operating procedures.
Troubleshooting
If machine doesn’t fill after switching on power, check and ensure that hot water
supply tap is open, water supply pressure is not below specification and Dual
Check Valve is correctly installed (arrows on the dual check valve’s body specify
water flow direction).
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Installation Checklist
CHECK OK / NOTES
Delivery
Supplied complete no transit damage
Position
Level and stable on sound, waterproof, self draining floor
Water
Isolator valve fitted Accessible, all fittings sound, no leaks
DCVs fitted (Washtech only) Correct direction
Temperature 65 ± 5°C
Flow rate Minimum 20 litres per minute
Pressure 200-350 kpa, limiter fitted if above this range
Booster fitted if below this range
Cold water when required Pressure not above 350 kpa
Hardness Filter or softening if required
Power
Isolating switch Fitted, functional and accessible
Supply as specified Voltage, current, circuit breaker
Waste
Usually 40 mm Sound, no leaks
Air gap on pumped drain
Chemicals
product name container no leaks primed conc.OK
Detergent
RinseAid
Machine operation
Run several cycles
Confirm correct operation Including correct fill levels
Operator training
Confirm Operator has copy of Operator Manual and is familiar with procedures
Start-up Model / Serial
Pre-rinse and racking Owner
Machine operation Location
Drain Technician
Clean Date
Shut-down Signed

UD Operating Instructions
Start up Fit scrap tray, wash pump filter and upstand, and shut door.
Turn wall power switch on and press machine ON/OFF Button for 1 second.
START/STOP button glows white and machine fills automatically.
Machine starts heating when wash tank is full.
START/STOP button glows orange while heating.
START/STOP button glows green when machine ready for operation.
Operation Select Light, Medium, Heavy or Manual cycle by pressing UP or DOWN keys.
Light, Medium and Heavy cycles correspond to 60, 120 and 180 seconds cycles
accordingly.
Load rack into machine and shut door.
Press START/STOP button to start the cycle.
The START/STOP button glows red while machine operates.
Pressing the START/STOP button during operation will terminate the cycle.
When red light goes out, cycle is complete.
If Manual cycle is selected machine will continue washing until START/STOP
button is pressed again. The following rinse will complete the cycle.
Remove rack. Close door.
NOTE: The cycle time might be longer than specified if water supply
temperature is below required.
Shut down every night
Select Drain cycle by pressing UP or DOWN keys.
Remove drain upstand, close door and press START/STOP button.
Machine will drain for 100 seconds with a cleaning rinse in a middle of cycle.
When drain & clean are complete machine will go in to standby mode.
Remove filter, scrap tray, and rinse clean.
Replace scrap tray, filter and drain upstand.
Scrap tray & filter arrangement
Ensure scrap trays, upstand bracket, filter and upstand are placed as shown

Dishwashing Procedures for bestresults
Note: these are general instructions to assist in getting the best performance from Washtech dishwashers –
some comments and / or illustrations may not apply to every unit.
Installation
Read the Operator Manual. Correct installation, including an adequate supply of
water at the correct temperature and pressure is essential for effective operation of
your machine. Refer installation instructions for details. Drain hose outlet height
is important on some models. Always install on a sound self-draining floor.
Water softening is recommended in hard water areas - especially for glasswashing
Pre-rinsing
Pre-scraping of dishes is required by hygiene regulations.
The best method is to pre-rinse with a pre-rinse spray unit -
or alternatively by scraping or dunking in water.
Cutlery Procedures
Pre-soak cutlery in warm water, preferably containing cutlery
pre-soak compound - refer your chemical supplier.
Do not overfill cutlery containers. Cutlery should be loose with
handles down. Sort after washing rather than before. Cutlery
of only one type nests together and obscures wash water.
Racking Procedures
Do not overload racks, minimize the overlap
of crockery. Cycle times are short and water
consumption per cycle low - so there is no
advantage in overloading racks.
Cycle Times
For multi-cycle machine use the longest
cycle whenever possible. Note that water
consumption does not increase with
longer cycles. Only choose shorter, faster
cycles when necessary.
Detergent Use of correct type and quantity of low foaming detergent is
essential to machine performance. Ask a professional chemical
supplier to recommend the best types and concentrations of
detergent, rinse fluid and cutlery soak for your situation. Note
that detergents are hazardous. Poorly formulated detergents,
particularly those containing chlorine, can shorten the life of
dispensing systems and the machine itself.

Dishwashing Procedures for bestresults
Drying
Single tank commercial dishwashers do not have a drying
cycle. However, the machines do rinse at high temperatures
which promote fast drying particularly when drying agents are
used. We recommend prompt removal of the rack from the
machine - leave the rack on the bench for 2 to 3 minutes
before emptying. This time will be reduced with correct use
of drying agent (rinse fluid) which reduces water surface
tension and allows water to drain quickly from washware.
For advice on drying agents and injectors refer to your
chemical supplier.
Daily Cleaning
It is essential that the machine is drained and cleaned at the end of each day. Drain
the machine then remove, clean and replace filters as per the operating
instructions. Regularly check the wash and rinse jets and clean them if necessary –
see below.
Regular Cleaning
Remove scrap traysand wash pump inlet filter, where
fitted, and rinse or brush clean.
Remove wash and rinse arms by undoing the central
thumbscrews. If necessary, remove the end cap screws
from the wash arms and the end screwsfrom the rinse
arms and flush the arms with water and/or use a toothpick or
paperclip to clear jets.
Note: arms and filters vary with model and may appear
different from this illustration e.g. those models with plastic
wash arms have removable jets for ease of cleaning
Regular Servicing
Regular servicing is essential for optimum performance and
long machine life. Maintenance is recommended at least
once every six months – especially when chemical injectors
are fitted.
Please contact Moffat or your Authorised Service Provider
to organize regular servicing of the dishwasher - discuss a
Preventative Maintenance Agreement.
Note: these are general instructions to assist in getting the best performance from Washtech dishwashers –
some comments and / or illustrations may not apply to every unit.

Notes

ISO9001
All Washtech products are designed and manufactured
by Washtech using the internationally recognised
ISO9001 quality management system, covering design,
manufacture and final inspection, ensuring consistent
high quality at all times.
In line with policy to continually develop and improve
its products, Washtech reserves the right to change
specifications and design without notice.
© Copyright Washtech 2013
Distributed in Australia
by Moat Pty Limited
P 03 9518 3888
F 03 9518 3818
E vsales@moat.com.au
740 Springvale Rd
Mulgrave 3170
Victoria
Service 1 800 622 216
Parts 1 800 337 963
www.moat.com.au