Range AT 900 Quick start guide

DISHWASHERS
RANGE AT 900
INSTALLATION, USE
AND MAINTENANCE
English
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WARNINGS
The appliance is to be used for washing dishes, glasses, cutlery, and trays in the kitchen.
·Read the instructions carefully before installation, use and maintenance of the appliance.
·The installation has to be performed by qualified personnel following the manufacturer's
instructions given in the provided manual.
·The appliance should only be used by trained personnel.
·In the event of breakdown or malfunction, switch off the appliance and seek help exclusively
from an authorized technical assistance centre.
·Only use genuine spare parts; otherwise no liability is assumed by the manufacturer.
INSTALLATION
Noise level <70 dB (A)
WATER CONNECTION
The appliance installation requires the connection of hydraulic flexible pipes, supplied together with
the appliance and in particular:
·3/4" water supply hose GAS;
·Ø1½ " drain hose (Ø1" in case of appliances with built-in drain pump).
Except for models with built-in drain pump, connect the drain hose of the appliance to a suitable
drain waste system, through a siphon on the floor near the appliance itself. Connect the filling pipe
with a 3/4" GAS water supply protected by an interception valve.
Before proceeding with the water connection, check the following conditions:
·The water supply pressure, measured with open valve, has to vary between 2 and 4 bars. If the
water supply pressure is lower than 2 bars, install a booster pump with delivery of 30 litres/min;
if it is higher than 4 bars, a pressure reducer set at 4 bars maximum has to be installed.
·The water hardness has to be between 8° and 14° F (0,8 - 1,4 mmol/l). If the water is harder,
install a water softener suitable for the water quantity used by the appliance containing 6 litres of
resin at least.
·If the appliance is not provided with a built-in detergent dispenser, it is possible to install one
outside the appliance by qualified personnel. The pipe coming out of the dispenser has to be
connected to the appropriate stainless steel connection Ø6 mm, which is welded on the back part
of the tank.
WARNING: If the appliance works continuously with short cycles, it is necessary to connect
the appliance to hot water at 50° C.
ELECTRIC CONNECTION
The appliance is not supplied with a plug: it has to be connected to the electric mains only by
qualified personnel through a main switch, in order to have the possibility to exclude the appliance
from the electric mains during the preliminary operations or the maintenance.
The appliance has to be connected also to a equipotential system of compensation through a screw,
placed on the lower part of the appliance back and marked .
The appliance is conceived to work under the following specifications:
·400 V (3N~) 50 Hz
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·230 V (3~) 50 Hz
·230 V (1~) 50Hz
The manufacturer's arrangement matches the first specification (that is: 400V, 3-phases, with
neutral); the others can be achieved following the provided wiring diagram.
The electric connection has to be made by interposing a general switch on the wall with fuses
having a capacity no lower than 25 A.
WARNING: While electrically connecting appliances working with 3-phase alternating current,
check the rotating direction of the pump motor.
WARNING: We highly recommend that the appliance is properly earthed.
The manufacturer assumes no liability for damage resulting from not observing this safety rule.
The manufacturer also assumes no liability for damage resulting from faulty electric connection.
USE
PRELIMINARY STEPS
Before starting the appliance, perform the following operations:
·Check that the filling and draining hoses supplied with the appliance are connected to the water
mains.
·The appliance is provided with a rinse aid dispenser and, on request, also with a detergent
dispenser, which are already set during the testing of the appliances by the manufacturer.
Connect the dispensers to their respective tanks, containing chemicals, which have necessarily to
be low-viscosity fluids; otherwise the dispensers may obstruct or break. Use only detergents
suitable for commercial dishwashers. Totally avoid foaming products.
·If present, check the right positioning of the detergent probe, because using the dispenser dry can
damage or break the device.
·Check the right positioning of the pump intake filter and of the surface filters.
·Check that the overflow pipe is in its right place.
·Lower the hood of the appliance and open the water cock.
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WATER FILLING AND HEATING
Picture 1
A Main switch
B Lamp “machine on”
C Lamp “machine ready”
D Lamp “cycle on”
E Boiler thermometer
With reference to picture 1, the appliance is switched on by turning the main switch (A) clockwise
into position (1); at the same time the warning lamp (B) lights on.
The appliance automatically fills water into the tank up to the set level and it switches on the boiler
and tank heating elements. When the right temperatures are achieved, the lamp (C) lights on, so to
show that the appliance is ready for starting the washing cycle. Check that the boiler thermometer
(E) is at the pre-set temperature.
N.B. The internal thermostats are set by the manufacturer at the following temperatures:
·boiler water temperature: 82,5 °C;
·tank water temperature: 55 °C.
WASHING CYCLE
·Lift up the hood of the appliance and pour some detergent into the tank (except for versions with
built-in detergent dispenser). The tank capacity is of 20 litres; therefore, the detergent shall be
poured into according to its manufacturer's prescriptions.
·Remove all the solid remainders from the dishes and put them inside the baskets.
·Select the washing cycle simply by turning the main switch (A). If it is in position (2), the
appliance will carry out the short cycle; if it is in position (3), it will carry out the long cycle; if it
is in position (4), it will work continuously, a washing cycle that is suitable for very dirty dishes
and glasses. In this last case it is necessary to turn the switch in position (3) or (2) in order to stop
washing and pass to the rinsing cycle.
·Slide the basket into the appliance and lower its hood. The appliance automatically starts the
washing and then the rinsing cycle, as shown by the lamp (D), starting also the rinse aid
80
c
9
0
12
3
4
5
A
D
C
B
E
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dispenser. Between the washing and the rinsing cycle the appliance makes a dripping pause.
When the cycle is finished, the lamp (D) turns off.
·On demand, it is available a device called “THERMOLOCK”, which lengthens the washing
cycle until when the water in the boiler achieves the pre-set right temperature.
·In order to start the following cycle, repeat all the operations, considering that the detergent has
to be added every 3 –4 washing cycles.
·To switch off the appliance, make sure that it has finished its working cycle and then turn the
main switch (A) into the position (0). This operation is shown by the turning off of the lamp (B).
MODELS WITH BUILT-IN DRAIN PUMP
In the versions with built-in drain pump, the drain pump works under the following conditions.
·When the filling solenoid valve is working. This is the normal working condition of the drain
pump, which drains the exceeding water in the tank through an overflow pipe during the water
filling or the rinsing phase.
·When the water in the tank is completely drained. Check that the appliance has finished the
washing cycle (the lamp (D) is off) and remove the overflow pipe. Keep the hood lifted; then
turn the main switch (A) anticlockwise into the position (5). When the water in the tank is
completely drained, turn the main switch (A) clockwise in the previous position.
SAFETY SYSTEMS
·The lifting of the hood stops every operation of the appliance, except for the heating of the water
in the boiler and in the tank. The lowering of the hood re-starts any interrupted operation.
·The level switch checks the water level in the tank automatically and it enables the appliance to
work only when the heating elements are below the water level both in the boiler and in the
tank.
·The washing pump is provided with a thermal control, which stops its working in case of
thermal overload.
·An overflow pipe drains the exceeding water that has been brought in during the rinsing cycle
and it enables a continuous change of water in the tank. It also avoids the water overflowing in
case of bad working of the pressure switch.
It is highly recommended to turn off the tap of filling water when the appliance is not working.
MAINTENANCE
Before any cleaning or performing any maintenance always disconnect the appliance from the
power supply.
DRAINING AND CLEANING
At the end of the working day it is necessary to carry out the following operations.
·Drain the water from the tank by removing the overflow pipe from its place. (For the models
with built-in drain pump follow also the instructions in the MODELS WITH DRAIN PUMP
section).
·Switch off the appliance, first turning the main switch (A) into position (0) and then the main
switch on the wall.
·Clean the internal part of the tank, removing the solids on its bottom.
·Check the openings of the washing arms carefully and clean them if they are obstructed.
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·Remove the filters and clean them carefully. As for the models with built-in drain pump, clean
the drain pump filter by unscrewing its tap from the frontal lower base of the appliance.
STAINLESS STEEL PARTS CLEANING
Clean all the stainless steel parts accurately by using soaped water or common degreasing products.
Do not use abrasive powders or iron wool.
When cleaning, avoid direct or high-pressure water sprays on the appliance: this might
damage electric appliances.
PERIODIC MAINTENANCE
Periodically check the openings of the rinse jets and remove any possible blockages.
When necessary, descale and disinfect the tank by using products normally available on the market.
This operation is particularly recommended for the good working of the heating elements.
DRAIN PUMP
After draining the appliance through the drain pump, clean the drain pump filter by performing the
following operations.
·Switch off the appliance and disconnect it from the power supply.
·Remove the drain pump filter and hold the water that is inside the pump.
·Clean the drain pump filter carefully; then, put it back on its place checking that the bayonet
coupling is well fixed.
Information for electrical and electronic devices used in EU countries
According to EU directives, devices marked with the following symbol may not be disposed of together with
normal household waste.
To dispose of your used device, please use the locally available differentiated collection system or consult your retailer
when you buy an equivalent product.
By actively using the provided collection systems, you are contributing to the reuse, recycling and enhancement of
electrical or electronic devices and protecting the environment and health.
Abusive product disposal is punishable by law in accordance with current legislation.
The packaging materials (plastic bags, polystyrene, cardboard, etc.) have to be collected according to the type of
material (e.g. cardboard, wood, plastic materials, etc.) and be disposed of in compliance with the norms in force.
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