Washtech Al8 Operating instructions

Before installation and commissioning, you must read the safety instructions and
warnings carefully and all the warning labels attached to the equipment.
Failure to comply (even partially) with the instructions given in this manual will
invalidate the product warranty and relieves the manufacturer of any responsibility.
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.
Safety Instructions
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.
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
 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
 Do not hose down the machine or splash water over the exterior
 Watch for broken glass etc when cleaning the inside of the machine
 Under no circumstances the user should attempt to carry out repairs
 All service/repair work must be carried out by qualified personnel only
Installer must be suitably qualified and ensure compliance with all codes and
standards including AS/NZS3500.1.
Failure to comply even partially with installation instructions may void the
Unpack machine, check for damage and complete delivery. Install machine on
sound waterproof self-draining floor and use adjustable feet to level machine.
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.
Refer Bench Details diagram.
Corner installation is not recommended for this model. We recommend sink
smaller than rack with guide to prevent rack falling into sink. Align sink with
dishrack path as shown.
Water Supply
Hot water temperature
Flow rate minimum
Consumption per cycle
Backflow prevention
65°C ± 5°C
20 mm (3/4" BSP Male)
20 litres per minute
3.5 litres approximately
DCV = Dual Check Valve fitted standard
200-400 KPa = 30-60 Psi.
Above this range fit pressure limiter. Don’t use small diameter plastic supply lines
especially below this range when optional rinse booster pump may be required.
FLUSH supply line before connection. Poor quality supply or excessive water
hardness may affect performance or damage machine – filtration and/or softening
is recommended.
40 mm gravity drain – refer point B on installation diagram – run waste directly
behind the machine or through open side panels or base.
Machine requires 3 Phase, Neutral and Earth, 400/415V, 25A/ph, 50Hz,
permanently wired via wall switch mounted adjacent to machine. Wash pump
rotation must be checked after installation to ensure correct direction (causes
excessive noise and damage).
Installation Checklist
Complete attached Installation Checklist to ensure machine is installed and
running correctly, and operator is familiar with operating procedures.
If the machine doesn’t fill after switching on the power, check and ensure that the
hot water supply tap is open, water supply pressure is not below specification and
Dual Check Valve is not faulty and correctly installed (arrows on the dual check
valve’s body specify water flow direction).
Installation Checklist
Supplied complete
Level and stable
Isolator valve fitted
DCVs fitted (Washtech only)
Flow rate
Cold water when required
Isolating switch
Supply as specified
Usually 40 mm
Air gap on pumped drain
product name
Rinse Aid
Machine operation
Run several cycles
Confirm correct operation
Operator training
no transit damage
on sound, waterproof, self draining floor
Accessible, all fittings sound, no leaks
Correct direction
65 ± 5°C
Minimum 20 litres per minute
200-350 kpa, limiter fitted if above this range
Booster fitted if below this range
Pressure not above 350 kpa
Filter or softening if required
Fitted, functional and accessible
Voltage, current, circuit breaker
Sound, no leaks
no leaks
Including correct fill levels
Confirm Operator has copy of Operator Manual and is familiar with procedures
Pre-rinse and racking
Machine operation
Model / Serial
Dishwashing Procedures
for best results
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.
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-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.
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 best results
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 trays1 and wash pump inlet filter2, where
fitted, and rinse or brush clean.
Remove wash and rinse arms by undoing the central
thumbscrews3. If necessary, remove the end cap screws4
from the wash arms and the end screws5 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 of the dishwasher is absolutely essential to
keep the machine in top working condition and obtain the
best performance.
Please contact Moffat or your Authorised Service Provider
to organize regular servicing of the dishwasher - discuss a
Preventative Maintenance Agreement for optimum
performance and long machine life.
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.
Operating Instructions
Start up
Fit drain upstand, wash pump filter,
scrap trays and shut door.
Turn wall power switch on and select
any cycle (1, 2 or 3).
Power light glows red and machine fills
Wash Ready light (water symbol) glows
amber when wash tank is ready.
Rinse Ready light (tick symbol) glows
amber when the machine is up to
required temperature and ready to run.
Select required cycle (1, 2 or 3 for
2, 4 or 6 minutes cycle accordingly).
Try cycle 3 initially and switch to faster
cycles only if necessary.
Load rack into machine and close door
to start the machine.
Cycle light glows green while machine
When Cycle light goes out, cycle is
Open door and remove rack.
After removing rack from maching, DO NOT shut door as machine
will start again.
NOTE: Machine will not operate unless Ready lights are on.
Shut down every night
Turn machine and wall power switches off.
Remove drain upstand to drain wash tank.
Remove scrap trays and wash pump filter and rinse clean.
Replace drain upstand, filter and scrap trays.