COMENDA LP360 User manual

35
Instruction manual for
dishwashers
LP360
LP360A
LC380
LC380A

36
FOREWORD
1. Read the instructions contained in the enclosed booklet carefully, because it
contains important information on installation, operation and maintenance
safety. Store this booklet carefully for any further consultation by other
operators.
2. Having removed the packing material, check that all the equipment is
present.
If there is any doubt, do not use it and contact qualified personnel.
The packing elements (plastic bags, foam polystyrene, nails, etc.) should be
kept away from children, because they are dangerous.
3. Before switching the equipment on, make sure that the model plate data
conforms to that of the electrical and water distribution network.
4. Installation should be carried out by qualified personnel according to the
manufacturer's instructions.
5. This equipment should be destined to the use which it has been conceived
for. Any other application should be considered improper and consequently
dangerous.
6. The equipment should only be used by personnel trained for its use.
7. Operators must strictly follow all hygienic requirements in the handling of
clean dishware and cutlery.
8. Do not leave the machine in an environment at temperatures lower than
0°C.
9. The protection of the machine is IP X3, therefore it should not be washed
with high pressure directed water jets.
10.Qualified personnel only can access the control panel, after having
disconnected the machine from the primary current supply.
11.The appliance is made according to EEC 89/336 regarding radio noise
suppression and electromagnetic compatibility.
12.According to EEC directive nr.23 of 19/02/1973 and the law of actuation
nr.791 of 18/10/1987, our appliances are built-up according to the good
technique norms in force.
13.Noise level of the machine, less than 67dB(A)

37
INSTRUCTIONS FOR USE

INSTRUCTIONS FOR THE USER
38
OPERATION AND USE
1)Before washing make sure that:
•the wall-mounted on/off switch is switched on;
•the water tap is open;
•water is present in the distribution network;
•the pump protection filters are installed in their respective positions;
•the overflow in inserted;
•all rotating parts are free;
•the rinse aid dispenser is full;
•make sure that dishware is in good conditions as it may cause cleaning
difficulty and haven bacteria.
2)Set switch "A" to position 1 to enable the automatic wash tank filling and
the consequent triggering of the heating element. The lamp “B” is on.
3)As soon as visual indicator "C" is ON, pour about 30 gr. of detergent
directly into the tank, paying attention to distribute it uniformly on the filters,
the quantity being according to supplier's instructions. Add 15 gr. every 7
cycles to achieve a concentration of 1,5 gr./lt. In order to respect our
environment, use only the correct amount of detergent.
When using chlorinated detergent, it is suggested to use an automatic
dispenser; otherwise, brownish spots might appear on the surfaces due to
chlorine reactions. Detergent should always be placed near the pump filter.
4)Then, introduce the glasses or the cups to wash, after having removed the
solid waste and having placed them into the proper racks. The cups and the
glasses should be turned upside down, while the cutlery should be put
vertically into the proper container, and the same applies to dishware.
5)By means of switch “A” select the wash cycle according to conditions of the
dishware:
•with glasses or cups select the short cycle (pos.1)
•with normally dirty dishes or cutlery select the medium cycle (pos.2)
•with particularly dirty dishes or deep dishes select the long cycle (pos.3)
A manual wash and rinse is possible by operating main switch "A" in the
respective positions "5" and "4". Excessive use of the manual rinse may lead
to the cooling of the water in the tank causing problems while washing and
subsequently with drying. For that reason ensure that the dishwasher is
attended while the manual rinse is working (we recommend max. time of 30
seconds).

INSTRUCTIONS FOR THE USER
39
6)To start the wash cycle simply close the side doors or hood, the end of
which will be indicated by the switching off of the "D” lamp.
N.B.: Machine in conformity with the existing hygienic standards,
guaranteeing a final rinse at 82°C. Wash cycle automatically lengthened
if final rinse temperature is not reached.
7)Remove the rack and slightly incline it to permit a perfect drain; allow
dishware to dry and after having washed one’s hands, handle the rack in order
not to touch the dishware inside then place the rack on hygienically clean
shelves.
8)At the end of washing, switch "A” in position "0"; empty out the tank by
taking out the overflow tube, then close the door and put the switch "A” in
position "1" for a few minutes to wash the machine. Then again put the switch
"A" in position "0" and wait until the tank is completely empty. At this point,
the filters can be taken out, in order to be washed, then replace its with the
overflow in its place.
For any further information concerning equipment cleaning, read chapter
"USEFUL SUGGESTIONS".
9)When the washing is finished, switch off the equipment by turning off the
main supply through the general wall switch and close the water supply.
INSTRUCTIONS DURING THE WASHING
1)Do not plunge bare hands into the water containing the detergent. If this
happens, wash them immediately and abundantly with fresh water.
2)When the machine is operating, do not open the door too rapidly.
3)Use only specific anti-foaming detergents.
4)Disconnect the equipment in case the machine is out of order or it does not
work properly. For the repairs consult a technical assistance centre authorised
by the manufacturer and ask only for an original spare parts.
5)Never modify the thermostat settings.
6)Check that lamp "C" is on.
7)Wash tank water should be changed at least twice a day or according to
daily wash requirements.
8)Do not subject clean dishware to any further cleansing treatment such as
brushes or drying towels.
If these instructions are not followed, the safety of the equipment can be
compromised.

INSTRUCTIONS FOR THE USER
40
USEFUL SUGGESTIONS
1) MAINTENANCE
IMPORTANT: Before carrying out the cleaning and maintenance operations,
disconnect the equipment from the electric supply.
Frequently check and clean the nozzles. The frequency of this operation will
depend on the quantity of residues, which may result in an unsatisfactory
washing result.
For the inside and outside cleaning of the machine, do not use corrosive
products such as sodium hypochlorite (bleach) savelling water and
hydrochloric acid, acids, steel wool or steel brushes.
The presence of calcium and magnesium salt in the water can compromise
machine performance, thus ask qualified personnel to remove the deposits
periodically.
In order to avoid some oxidation risks, or chemical reactions, generally the
stainless steel surfaces have to be well cleaned.
2) OPTIMAL RESULTS:
A possible wash deficiency can be noticed when residue remains.
Marks can be caused by an insufficient rinse: in this case check that the rinse
nozzles are clean and that there is sufficient water supply pressure.
In case of dishware residue check that:
•the washing nozzles are clean
•the water temperature is around 60°C
•there is detergent
•the pump suction filter is clean
•the racks are suitable for the dishes and cutlery that are to be washed
•the position of the cutlery and the dishes in the racks are correct
3) TEMPORARY MACHINE NON-USE
In case the machine is stopped for some weeks, it is recommended before
closing it to fill the tank and run the machine with clean water, then empty it
out, in order to avoid the forming of bad odour and that any residue remains in
the pump.
If necessary repeat this operation until the water leaving the machine is clean.
If the machine is stopped for many weeks, it is recommended to oil the
stainless steel surfaces with paraffin oil and to discharge the water from the
boiler and the electric pump.
4)SANITISING THE MACHINE
Sanitising the machine at least once a week is of the utmost importance in
order to guarantee hygiene even when the machine is not in use.
It is advisable to use a disinfecting product suggested by an authorised
detergent dealer.
The use of this product will satisfy hygienic requirements, even during
machine non use.
Before switching off the machine run the machine briefly with clean water.

INSTRUCTIONS FOR THE USER
41
5)HARD WATER CONDITIONS
If a hard water supply is present, mineral deposits will form within the
machine and also on dishware.
In order to avoid the above conditions a periodic removal of these deposits is
necessary.
The frequency and method of this operation upon consultation by your
detergent supplier.
CONTROL PANEL
AMain switch
0Machine off
1Short cycle
2Medium cycle
3Long cycle
4Continuos rinse
5Continuos wash
BPilot lamp “MACHINE ON"
CPilot lamp “MACHINE READY"
DPilot lamp “MACHINE WORKING"
IRegulating screw for rinse aid injector

42
INSTALLATION AND MAINTENANCE
INSTRUCTIONS
The following instructions are addressed to a qualified personnel the only one
authorised to carry out checks and repairs, if any.
The manufacturer declines any responsibility in the case of interventions made
by a non qualified personnel or the use of spare parts other than those supplied
by the Manufacture.

INSTRUCTIONS FOR TECHNICAL PERSONNEL
43
INSTALLATION
During installation, carry out proper machine levelling, which is a prerequisite
for a correct operation thereof (max. tolerance 2°).
In order to prevent any damage caused by steam going out of the machine,
make sure that the surrounding materials do not deteriorate in its presence.
After machine installation check thermostat settings, booster 85°C, tank 60°C.
1)ELECTRICAL CONNECTION
The electrical safety of this equipment is only assured if it is connected as
follows.
It is necessary to connect the equipment to an effective earthing as specified
by the electrical safety regulations in force. Check that this basic requirement
is complied with, in case of any doubt ask for a careful check of the
installation by a qualified personnel.
In the case the earthing is not efficient there will be a dispersion due to the
suppresser.
The machine shall be included in a correctly dimensioned equipotential, whose
effectiveness is to be very tight in accordance to the procedures set for in the
applicable safety standards. The connection shall be performed through a
screw marked by a plate ( ) near the rear side of the appliance.
The manufacturer declines any responsibility for any damages caused by lack
of an effective ground installation. For the electrical power supply have
available a wall circuit breaker switch with multiple phase protection
according the following table with contact aperture distance, equal to or not
exceeding 3mm and a supply cable no less than 2.5mm².
model Supply 380V 3N Supply 220V/3 Supply 220V/1
LP360 16A 16A 32A
LC380 20A 32A 63A
For other supplies the cable cross section and the circuit breaker switch must
be calculated according to voltage and length of cabling. If cabling too long
adjust cable size to Amp rating; do not pull on supply cable or install it under
tension. If cable needs to be replaced use type H07RN-F.

INSTRUCTIONS FOR TECHNICAL PERSONNEL
44
2)WATER CONNECTION
Install a 55°C water tap in a well accessible place, terminating in a 3/4" fitting,
which the pipe strainer and inlet hose shall be connected to.
Carefully comply with any national or regional regulations in force.
The operating pressure should be neither less than 2 bars or greater that 4 bars
(200/400 kPa). If water pressure is inferior then 2 bar, a pressure increase
pump is necessary. If water pressure exceeds 4 bar, a pressure reducer is
necessary.
In order to obtain best results, it is suggested that the water supply have a
hardness not greater that 15°F.
3)WATER DRAIN
Arrange a water drain towards the floor with siphon and connect the machine
with the flexible tube given with the machine, so that it leans towards the
drain.
Moreover, make sure that the hose does not have constrictions.
Make sure that the building drain tubing withstands temperatures up to 70°C.
4)RINSE AID DOSAGE
Make sure that rinse aid suction hose is correctly installed in it’s proper
container. The dosage is automatic with the adjusting of the screw "I", which
after screwing to a full stop unscrew two turns.
At this point the machine automatically takes the necessary liquid for every
rinse: during the washing operations, check that the liquid of the container
does not run short.
For filling the dosing tube, start the machine without plugging the overflow in:
at that point switch the machine on (pos.1) and off (pos.0).
Repeat this operation several times at intervals of few seconds, until the rinse
aid reaches the injector.
Wait until the machine reaches the correct temperature (lamp “C” on). Make
some empty cycles, then try to wash: if the objects washed show some drops,
this means that the rinse aid is insufficient.
On the contrary, the presence of marks can mean that there is too much rinse
aid or the water is too hard.
The regulation can change according to the kind of rinse aid.

INSTRUCTIONS FOR TECHNICAL PERSONNEL
45
5)DETERGENT DOSAGE (for machines with built-in detergent dispenser)
With the screw on the side of the detergent pump, close completely the
product intake, then slowly open the screw until the desired intake quantity has
been reached. The correct quantity is indicated by the detergent supplier.
Check that the intake of the pipe during the rinse cycle is as preset. (8cm = 1g
approximately). Maximum intake or delivery distance: 2 meters.
ENERGY CONSUMPTION
Model
Wash tank
capacity
(l)
Rinse
water
consumpt.
(l)
Tank
heater
(W)
Booster
heater
(W)
Wash
pump
(W)
Total
electric
load
(W)
Output in racks
per hour with
55°C inlet
water
Output in
racks per
hour with
12°C inlet
water
LP360 25 3.5 3000 4200 750 4800 40/30/20 10
LC380 42 3.5 3000 6000 1500 10500 48/30/20 10
In the event of low water supply temperature, there will be a subsequent
machine output drop.

INSTRUCTIONS FOR TECHNICAL PERSONNEL
46
WIRING DIAGRAM
A1 Main switch
A5 Drain switch (if required)
B1 Pilot lamp power on
B2 Pilot lamp machine ready
B3 Pilot lamp machine working
B5 Pilot lamp drain cycle (if required)
C1 Wash pump contactor
C2 Booster heater contactor
C2bis Safety contactor of booster heater
C3 Tank heater contactor
C4 Relay
D1 Wash timer
D2 Wash timer
E1 Hot rinse solenoid valve
F1 Door switch
G1 Condensator
G2 Anti noise filter
H1 Junction
H2 Junction for Detergent dispenser (if required)
M1 Wash pump
M2 Rinse booster pump (if required)
M3 Detergent dispenser (if required)
M5 Drain pump (if required)
P1 Pressure switch
R2 Booster heater
R3 Tank heater
T2 Booster thermostat
T2bis Booster safety thermostat
T3 Tank thermostat
The manufacturer declines any responsibility for any printing errors contained
in this booklet. The manufacturer also reserves the right to make any
modifications to its products that do not affect the basic characteristics thereof.

INSTRUCTIONS FOR TECHNICAL PERSONNEL
47
REFER TO ELECTRICAL DRAWING