ICE CUBES MAKERS Range
SPRAY Technology
CONTENTS
Introduction
Warnings........................................................................................................................................3
Description – Operating Principles.................................................................................................5
Operating principle following the electric diagram..........................................................................6
Specifications
Diagrams of connections and dimensions......................................................................................9
Consumptions, weights, packaged dimensions and volume.........................................................10
Technical Data............................................................................................................................11
Production Figures......................................................................................................................12
Reception of the machine
Packaging - Housing – Specifications plate.................................................................................16
Installation
Required conditions for placement of unit - Water and drainage..................................................17
Connection to water mains (water condensing ) – Connection to drain – Electrical connection....18
Starting
Preliminary checking...................................................................................................................19
Starting.......................................................................................................................................20
Adjustments
Fan pressostat (air condensing)...................................................................................................21
Security pressostat......................................................................................................................22
Maintenance and cleaning instructions and procedures
Maintenance chart.......................................................................................................................23
Water condenser – Air condenser - Evaporator / Water tray........................................................24
Storage bin – Housing - Pipes and nozzles..................................................................................25
Water Filter – Water leaks control...............................................................................................26
Special advises of use R404A Refrigerant................................. ............................................................26
Troubleshooting .....................................................................................................................................27
2
INTRODUCTION
Thank you for choosing ITV's NG DP Ice Cube Maker.
You have purchased one of the most reliable ice-making products on the market today.
Carefully read the instructions contained in this manual since they provide important
information relative to safety during installation, use, and maintenance.
WARNINGS
- This appliance should be installed by approved Technical Service Personnel.
- This plug should be accessible at all times.
- To reduce the risk of electrical shock, ALWAYS disconnect the machine BEFORE
cleaning or maintaining the equipment. Do not attempt to install, service, or modify this
machine.
- Improper use by other than specially trained technicians is extremely dangerous
and may result in a fire or electric shock.
- This product has not been designed for any uses other than producing ice cubes
with drinking water.
- It is extremelly dangerous to modify or try to modify this appliance. Besides it would
automatically cancel the warranty totally.
- This appliance is not intended for use (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have
been given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
- Children should be supervised to ensure that they do not play with the appliance.
- This machine should not be placed outdoors or exposed to rain.
- Connect to drinking water mains.
- Connect only with the powerd supply cord supplied with the machine.
- This appliance is not intended to be connected to a fix canalization.
- Please follow the instructions given by the manufacturer in order to guarantee the
efficiency of this machine and a proper operation. THE CLEANING AND MAINTENANCE
should be carried out by trained personnel in most of the cases.
3
IMPORTANT:
- Do not attempt to service this machine yourself. Improper use by other than
specially trained technicians is extremely dangerous and may cause severe damage to the
unit. In case of breakdown contact an authorised distributor. We strongly recommend using
only original replacement parts.
- Waste and other material should be disposed in accordance to local regulations
and procedures for waste disposal.
CLEANING AND MAINTENANCE OPERATIONS ARE NOT COVERED BY THE
WARRANTY AND WILL BE INVOICED BY THE INSTALLER..
4
DESCRIPTION
Main features:
− Stainless steel body AISI 304 and chapa galvanizada.
− Anti-blocking spray nozzles.
− Pump without seals.
− High pressure safety pressostats even in air-cooled machine.
− Large condensers (work well at high ambient temperatures; and reduce cooling water
consumption in water-cooled machines).
− TRANSPARENT CUBES with most of the water mains.
ALFA CUBE GALA CUBE DELTA CUBE SUPER STAR CUBE
OPERATING PRINCIPLE
WHEN SWITCHING ON THE MACHINE FOR THE FIRST TIME, THE MACHINE SHOULD
BE PLACED ON THE DEFROSTING STAGE. To do so, turn the wheels on the timer until
the microswitches are depressed.
- At this moment, the compressor is working; the water inlet valve and hot gas inlet
valve are both open. The water bin fills with water, any excess is lost via the maximum level
overflow.
- After a period of time controlled by the timer the hot gas valve and water inlet valve
are closed. The pump then sends water to the evaporator where the ices cubes are
gradually formed. The evaporation temperature slowly descends until it reaches a point
where the cycle thermostat is connected and starts the timer. Once this time has elapsed,
the defrosting stage (3-4 minutes) begins. The pump is off and the hot gas and water
valves are open. Some water is sent to the top of the evaporator to help the cubes unstick.
- Once the defrosting stage is over, the cycle begins again, and so it continues until
the bin is full of ice, and contact between the bin thermostat situated at the top of the bin
and the ice will stop the machine. The bin thermostat will never stop the machine in midcycle.
5
OPERATING PRINCIPLE FOLLOWING THE ELECTRIC DIAGRAM (TIMER ON
DEFROST - MICROSWITCHES DEPRESSED).
- The ITV model NG has two switches:
1st In the frontal side of the machine (with led). This turns the machine on or off when we
press it.
2nd The second switch is located in the electrical panel. This one stops the condensing unit,
but keeps the hydraulic part in operation and allows to do the cleaning of the machine
(except in NDP20 model).
- Current reaches the machine via the line connecting the blue (1) and brown (2)
terminals. The brown wire connects the compressor and timer motor. The blue wire
connects bin thermostat T1 which closes the circuit with 2. A different blue wire goes to 2
on terminal G1 which at this moment is connecting 1 and 4.
- A red wire connects bin thermostat T1 and micros G1 and G2 which close the
circuit with 4 and provide current via G1 to the timer G.
- At this point the following are connected:
v COMPRESSOR (S)
v WATER INLET VALVE (P)
v HOT GAS VALVE (Q)
v TIMER MOTOR (G)
- Since the motor of the timer (G) is working, during 1÷3 minutes the roler of micro of the
second water inlet coil (cleaning valve drive) is depressed until the pins release the micro,
closing this valve..
- After 2 to 4 minutes micros G1 and G2 will open and close circuits 1-2.
- Via terminal 2 on micro G2, current reaches the pump. Circuit 4 on micro G2 which
provides current to the hot gas valve (Q) and water inlet valve (P) will be interrupted. Since
the thermostat is between 1 and 3 the timer will receive no current. The compressor
continues switched on.
6
- Air-cooled machines have a fan (R) which is controlled by the pressostat (F).
- In water-cooled models without pressostatic valve, pressostat (J) opens and closes
the condenser electrovalve (K).
- Evaporator temperature decreases until the cycle thermostat (T2) set point is
reached, at this temperature circuit 1-2 will be closed and timer motor (G) will switch on.
- Once the cycle is over, the pins on the timer wheels will force the micros to change
circuits, stopping the pump and opening the hot gas valve and water valve. The combined
effect of hot gas and water sprayed on the top of the evaporator will release the ice cubes
and change the position of the cycle thermostat (T2).
- The ice production and defrosting cycle will continue until the ice storage bin is full, at
which point cycle thermostat (T1) will disconnect the machine, but never during a cycle, but
at the beginning of the defrosting stage, since during the production cycle, current will
reach the pump via terminals 1-2 of micro G1.
- The machine will remain disconnected until the level of ice in the bin drops below the
thermostat because of ice consumption. At this point the bin thermostat T1 changes and
the machine will start a new production cycle automatically.
7
8
SPECIFICATIONS
Models:
NDP 20
NG DP 30 - 150.
9
NG MDP 150
VOLUME
805
775
625
DP 45 A
CONSUMP. CONSUMP. CONSUMP. NET DIMENSIONS DIMENSIONS GROSS
WATER
COND..
L/HOUR (1) PROD. L/HOUR (1)
WATER
L/HOUR (1)
TOTAL
WATER
WEIGHT MACHINE PACKAGING WEIGHT
(KG) X*Y*Z (KG) (M3)
5.1 5.1 36 350x474x592 420x540x725 35 0.20
18 5.1 23.1 36 350x474x592 420x540x725 35 0.20
14 14 39 405x560x770 485x610x790 45
20 14 34 39 405x560x770 485x610x790 45
14 14 42 465x595x795 525x645x920 50
20 14 34 42 465x595x795 525x645x920 50
22,4 22,4 70 775x625x805 820x700x825 80
24 18.8 42.8 45 465x595x795 525x645x920 53
28.8 28.8 48 535x595x795 595x645x920 67 0.40
30 28.8 58.8 48 535x595x795 595x645x920 67 0.40
14.6 10.6 58 715x595x945 780x670x1055
54 14.6 68.6 58 715x595x945 780x670x1055
17.2 17.2 89 715x700x1050 780x780x1070
59 17.2 76.2 89 715x700x1050 780x780x1070
22.4 22.4 95 860x700x1050 925x780x1070
62 22.4 84.4 95 860x700x1050 925x780x1070
62 22,4 84,4 70 775x625x805 820x700x825 80
18.8 18.8 45 465x595x795 525x645x920 53
78 0.57
78 0.57
100
100
105
105
10
MODEL
NDP 20 A
NDP 20 W
NG 30 A
NG 30 W
NG 35 A
NG 35 W
NG 45 A
NG 45 W
NG DP 60 A
NG DP 60
W
NG DP 80 A
NG DP 80 W
NG 110 A
NG 110 W
NG 150 A
NG 150 W
MDP 150 A
MDP 150 W
REFRIGER. LOW FUSE POWER
CHARGE PRESSURE SECURITY COMPRESSOR
HIGH PRESSURE
TOTAL
INTENST.
AMPS
POWER
ABS
MIN. MAX. AVERAGE -2 -1 -2
(GR) (A) (A) (W) (W)
345 2 1/5 355
285 2 1/5 355
320 2 1/4 423
300 2 1/4 423
360 2 1/4 540
310 2 1/4 540
420 3 3/8 550
365
420
350 3.5 3/8 650
470 3 1/2 780
355 3 1/2 780
1000 4 7/8 1150
1000 4 7/8 1150
1000 4 13/8 1350
1000 4 13/8 1350
1200
1200
15´5 bar 18 bar 2´5 bar
3
3.5
5.5
(TO INSTALL)
10
3/8 550
3/8 650
13/8 1500
13/8 1500
(1) Data obtained at room temperature (20°C), water introduced at 15°C; water quality = 500ppm
(2) Maximum consumption obtained at room temperature=43°C, according to UNE climate classification Class T
(TROPICALISED)
NOTE: Expansion controlled by capillary except in modulars models where it is controlled by means of an
expansion valve.
11
PRODUCTION CHARTS (Kg/Day)
NDP20
Tw/Tr 45 40 35 30 25 20 15 10
35 8 10 13 14 16 17 17 17
30 12 15 17 19 20 21 21 21
25 15 18 20 22 24 24 25 25
20 19 21 24 25 27 28 28 28
15 22 24 27 28 30 20 31 31
10 24 27 29 31 32 33 33 33
5 26 29 31 33 34 35 35 35
NG 30
Tw/Tr 45 40 35 30 25 20 15 10
35 12 16 19 22 24 25 26 26
30 18 22 25 28 30 31 32 32
25 23 28 31 34 36 37 38 37
20 28 32 36 38 40 42 42 42
15 33 37 40 43 45 30 47 47
10 36 40 44 46 48 50 50 50
5 39,6 43 47 49 51 53 53 53
12
NG 35
Tw/Tr 45 40 35 30 25 20 15 10
35 14 19 22 26 28 29 30 30
30 21 26 30 33 35 37 37 37
25 27 32 36 39 42 43 44 44
20 33 38 42 45 47 49 50 50
15 38 43 47 50 52 35 55 54
10 42 47 51 54 56 58 59 59
5 46 51 54 58 60 61 62 62
NG 45
Tw/Tr 45 40 35 30 25 20 15 10
35 18,3 24,4 29,5 33,5 36,5 38,5 39,4 39,4
30 27,5 33,6 38,7 42,8 45,8 47,7 48,7 48,6
25 35,8 41,9 47 51,1 54,1 56 57 56,9
20 43,2 49,3 54,3 58,4 61,4 63,4 64,3 64,2
15 49,5 55,7 60,7 64,8 67,8 45 70,7 70,6
10 55 61,1 66,1 70,2 73,2 75,2 76,1 76
5 59,4 65,5 70,6 74,6 77,7 79,6 80,6 80,5
13
NG 60
Tw/Tr 45 40 35 30 25 20 15 10
35 24,4 32,5 39,3 44,7 48,7 51,3 52,6 52,5
30 36,7 44,9 51,6 57 61 63,7 64,9 64,8
25 47,8 55,9 62,7 68,1 72,1 74,7 76 75,9
20 57,6 65,7 72,5 77,8 81,9 84,5 85,8 85,6
15 66,1 74,2 81 86,4 90,4 60 94,3 94,2
10 73,3 81,4 88,2 93,6 97,6 100,2 101,5 101,4
5 79,2 87,4 94,1 99,5 103,5 106,2 107,4 107,3
NG 80
Tw/Tr 45 40 35 30 25 20 15 10
35 32 43 52 59 64 68 70 70
30 49 59 68 76 81 84 86 86
25 63 74 83 90 96 99 101 101
20 76 87 96 103 109 112 114 114
15 88 98 108 115 120 80 125 125
10 97 108 117 124 130 133 135 135
5 105 116 125 132 138 141 143 143
14
NG 110
Tw/Tr 45 40 35 30 25 20 15 10
35 44 59 72 81 89 94 96 96
30 67 82 94 104 111 116 119 118
25 87 102 114 124 132 137 139 139
20 105 120 132 142 150 154 157 157
15 121 136 148 158 165 110 172 172
10 134 149 161 171 178 183 186 185
5 145 160 172 182 189 194 197 196
NG 150
Tw/Tr 45 40 35 30 25 20 15 10
35 61 81 98 111 121 128 131 131
30 91 112 129 142 152 156 162 162
25 119 139 156 170 180 186 190 189
20 143 164 181 194 204 211 214 214
15 165 185 202 215 225 150 235 235
10 183 203 220 233 244 250 253 253
5 198 218 235 248 258 265 268 268
15
DELIVERY & UNPACKING
Upon receipt, thoroughly inspect the packing container. If there appears to be damage to
the container contact the shipper immediately.
Unpack the unit in presence of the forwarder noting any damage on the delivery note or
CMR or in an additional document. ITV packing bears the “Green Point” on all models
since January 1st 1998 according to the European Directives on management of Packaging
and Waste Disposal.ITV.
Be sure to include model name and serial number on all claims. Serial number is located in
the following three places:
Packing
There is a label stick onto the cardboard packing bearing this serial number (1).
Machine body
On the back of the machine (1).
Rating plate and serial number
Located at the back of the machine (1).
Water cooled machines: check that the
drainage hose at the back of the machine is
in good condition.
Verify that the instalation kit is inside the
bin, and has the following pieces: scoop,
3/4’ water hose, two small filters and user
WARNING: DO NOT LEAVE PACKING MATERIALS (PLASTIC BAGS, CARDBOARD
16
BOXES, ETC.) IN REACH OF CHILDREN.
17
INSTALLATION
Required conditions for placement of unit
IMPORTANT:
The NG machines are intended to work at room temperature between 5ºC and 43ºC
and with water temperature between 5ºC and 35ºC.
Difficulties during harvest cycle can appear below these minimum temperatures.
Above the maximum temperatures the life of the compressor becomes shorter and the
production decreases considerably.
IMPORTANT:
The new box-type frame in NG models allows a better ventilation in the air-cooled
machines, due to the fact that the condensers are placed in oblique position in the front
part of the machine.
The machines will work properly even if they are located in places with little
ventilation at the rear and lateral sides. The air is expelled by the front grill.
Bear in mind the previous remarks if the premises where the machine is located is very
dusty or smoky
The floor on which the machine will be place should be solid and as leveled as
possible.
Water and drainage
Water quality influences on ice hardness, flavour, and quality as well as condenser life.
Keep in mind the following points:
a) WATER IMPURITIES:
Major impurities are eliminated by filters provided. Filters should be cleaned
regularly depending on purity of water. For minor impurities we recommend installing a 5micron filter (Provided with the unit:. Part # ITV 7499).
18
b) WATER WITH MORE THAN 1000 PPM:
Ice will be less hard and tend to adhere. Cubes with white spots may appear. Lime deposits
may impede proper functioning. In water cooled models, condenser obstruction is likely.
Installation of a high quality water softener is recommended. Lime deposits can be avoided
with the installation of our polyphosphates filter. (Part # ITV 7500).
c) CHLORINATED WATER:
Chlorine taste can be avoided by installing a carbon filter (Part # ITV 7509).
(NOTE: You may encounter water with all aforementioned properties.)
d) HIGHT-PURITY WATER:
Up to 10% reduction in overall production may occur.
Connecting Unit To Water Source
- Use 1.3 m. flexible tube (with the two filter joints provided) provided. NOTE: We
advise against using faucets with two exits and two keys since they can close the buttock
by mistake and so the machine remains without water. This may indicate a false failure.
- Water pressure should be between 0.7 and 6 Bars. (10/85 psi.)
- If water pressure excedes these values, installation of appropriate corrective units
will be necessary.
- It is important that water tubing does not come close to or in contact with any heat
sources or heat generated by unit as this could decrease production.
Connecting Unit To Drain
- Drain must be located at least 150mm. below machine
- Drain tube must have an inner diameter of 30mm. with a minimum gradient of 3 cm
per meter.
Electrical connection:
- The Unit is provided with a 1.5 m cord and schucko socket. If the cord is damaged
shoud be replaced by a cord or special assembly supplied by the manufacturer or aftersales service.
- It is strongly recommended to leave a minimum space between the rear side and
the wall in order to have an easy access to the plug without risks.
- It is advisable to install a switch and adequate fuses. Nominal voltage and intensity
are indicated on rating plate as well as on this manual's technical pages. Voltage
fluctuations greater than 10% can cause problems or prevent machine from starting.
19
- The Line to base of plug must have a minimum section of 2.5 mm2.
- Be sure voltage indicated on rating plate corresponds to that of mains supply.
IMPORTANT!
Supply socket must be properly earthed. Be sure to check standard for country were
appliance is going to be installed.
OPERATION
Preliminary Check
a) Is machine levelled?
b) Are voltage and frequency of mains supply the same as indicated on rating plate?
c) Is drainage system functioning?
d) Is air circulation and room temperature adequate? (**Air cooled models)
TEMPERATURE ROOM WATER
MAXIMUM 43 C 35ºC
MINIMUM 5º C 5ºC
a) ** Is water pressure adequate?
MINIMUM 0.7 Bar
MAXIMUM 6 Bar
NOTE: To install a pressure reducer If water inlet pressure is more than 6 bar.
ATTENTION: Check that voltage and mains frequency are the same as in the rating plate.
20
STARTING UP
Having followed the installation instructions (ventilation, temperature, room conditions,
water quality, etc…), proceed as follows:
1) Open water faucet. Check for leaks.
2) Plug machine into electricity mains supply.
3) Switch on the machine (the switch is in the front of the machine).
4) Ensure that there are no strange vibrations or scraping sounds.
5) Check that the water curtain moves freely.
6) Verify that the nozzles send water to the evaporator in the correct direction (uniform
fans).
7) After 10 minutes, check that the water bin has no leaks on the maximum level overflow.
ATTENTION:
ADVISE THE FINAL USER ON MAINTENANCE PROCEDURES WHICH ARE NOT
INCLUDED IN WARRANTY, AS WELL AS THOSE BREAKDOWNS CAUSED BY
NEGLECT OF PROPER MAINTENANCE PROCEDURES.
21
ADJUSTMENTS
Condenser water valve pressostat
- This pressostat controls high pressure by opening and closing the condenser water
valve. Differential is a fixed 1 Bar (14 psi.).
- The valve closes at 15 Bar (214 psi), which is equivalent to a condensation water
exit temperature of 38ºC. . Below this pressure it will be difficult to unstick the cubes during
the defrosting cycle.
- Above this pressure, compressor life and ice production are both reduced.
Pressure can be increased by turning the small screw on the pressostat clockwise. A full
turn is equivalent to about 1.5 Bar.
Fan pressostat ( air condensation)
Pressure Control operates on high pressure by starting and stopping fan. Differential
is a fixed (1 Bar or 14 psi.).
Cut-off pressure must be 15 Bar (214 psi). Low pressure values may cause difficulties
during harvest cycle. Higher pressure values may shorten compressor life and diminish ice
production.
Pressure can be regulated by rotating screw on Pressure Control Valve (clockwise to
increase pressure). One full turn is aquivalent to about 1.5 Bar.
22
Safety Pressostat
his safety device trips when discharge pressure is too
a) Air circulation is not sufficient, room temperature is
b) There is not enough water in the system o
T
high. Pressure might exceed the limit when:
too high or condenser is dirty (air cooled models).
temperature is
too high in water cooled models.
HIGH PRESSURE REGULATION (fixed):
3030-22 Bar (from model 110 part # 2683)
27-21 Bar (380-296 psi.)
23
MAINTENANCE AND CLEANING INSTRUCTIONS
IMPORTANT: Maintenance and cleaning procedures as well as problems derived from
failing to carry them out are not covered by the warranty.
Proper maintenance is essential to obtain favourable ice quality and optimum functioning of
unit.
- Frequency depends on water quality and characteristics of room where unit is installed.
IMPORTANT: Maintenance/cleaning procedures should take place at least once every six
months. If concentration of air pollutants is high, complete procedures on a monthly basis.
MAINTENANCE TABLE:
PROCEDURE MONTHLY QUARTERLY BIANNUAL ANNUAL BIENNIAL DURANTION
Air condenser cleaning 0000 0000 **** **** **** 30 minutes
Water condenser cleaning #### **** 90 minutes
Inyectors cleaning #### #### **** **** 30 minutes
Fabrication head filter cleaning
Water circuit cleaning #### #### **** **** 45 minutes
Sanitary cleaning #### #### **** **** 30 minutes
Water filter
cleaning/replacement
Stock deposit cleaning. &&& &&& &&& &&& &&& -Unit cleaning &&& &&& &&& &&& &&& -0000 Depending on room characteristics
#### Depending on water quality
&&& CARRIED OUT BY OWNER
**** ESSENTIAL
#### **** **** 30 minutes
#### #### **** **** **** 30 minutes
MAINTENANCE AND CLEANING PROCEDURES AS WELL AS PROBLEMS DERIVED
FROM FAILING TO CARRY THEM OUT ARE NOT COVERED BY THE WARRANTY.
Service personnel will invoice you for travel expenses, time invested and materials required
for maintenance and cleaning of unit.
24
MAINTENANCE AND CLEANING PROCEDURES
** WARNING: Unit should always be disconnected during maintenance/cleaning
procedures.
Water Condenser
1) Disconnect machine.
2) Close water faucet.
3) Disconnect water entry/exit from condenser.
4) Prepare a solution of 50% phosphoric acid in distilled water.
5) Distribute solution through condenser. (Solution is more effective at 35°-40°C).
WARNING!
DO NOT USE HYDROCHLORIC ACID
Air Condenser
1) Disconnect machine.
2) Close water faucet.
3) Clean condenser using a vacuum cleaner, brush or low pressure air.
Evaporator/Water Tray
1) Switch off the electric panel and place the timer in defrosting position.
2) Remove the top cover.
3) Place the overflow pipe. Remove the evaporator cover.
4) Prepare a solution of 50% phosphoric acid in distilled water. Do not use hydrochlorate
acid. Pour slowly this solution in the upper part of the evaporator, until it overflows
in the water tray. The mixture is more effective with the water between 35ºC. and
40ºC.
5) Let solution stand for 10 minutes.
6) Remove the overflow pipe and wait until the tray is empty. Put again the overflow pipe.
(In machines provided with discharge valve should be activated manually).
7) Refill the water tray to the maximum level with the same solution. Connect the machine
(close faucet) and wait 20 minutes.
8) Open faucet, put the timer forward up to the harvest cycle and once the ice has fallen
disconnect the machine and put the timer in defrosting position.
WARNING:** Discard ice produced during cleaning procedure.
25
NOW STARS THE SANITARY CLEANING
9) Connect the machine once it has finished entering water, remove the evaporator cover
and pour lye (one glass). Wait for 20 minutes.
10) Put the timer foward up to defrosting position. Once the ice has fallen, THROW AWAY
THIS ICE and let the machine produce another complete cycle.
IMPORTANT: ** Discard ice produced during this procedure.
11) Clean and assemble all the components. Verify that the grill is cleaned and that cubes
slide properly. Check that any strip gets blocked in the curtain. Check and/or change
the water inlet filters.
12) Check the adjustments of the cycle thermostat (cubes more or less filled) and that at
the end of the cycle the frost is closed to the compressor.
13) CHECK THAT THE NOZZLES ARE PROPERLY PLACED, THAT THE FORMED
WATER FANS ARE UNIFORM AND ALL EQUAL. If necessary, disassemble, clean
and put again in the right position.
Cleaning the ice bin.
1) Unplug the machine, turn off water supply, and empty storage bin of ice.
2) Wipe with a kitchen cloth soaked in lye and detergent.
3) If white lime stains do not vanish, rub with some lemon or vinegar, wait for a few
minutes and wipe with the cloth again. Rinse with plenty of water, dry, and run the
machine.
Cleaning the outside of the machine
Follow the same procedure as for the ice bin.
Spray nozzles and connecting pipes
1) Remove the curtain (it can be cleaned with vinegar or phosphoric acid, rinse, clean with
lye, rinse)
2) Remove the metal grill and clean likewise.
3) PULL UPWARDS THE CONNECTING PIPE. IT HAS BEEN ASSEMBLED BY
PRESSING IT INTO PLACE.
4) Disassemble the nozzles and the connecting tube covers and clean them.
5) Disassemble and clean the main filter of the production unit. (IT IS ASSEMBLED BY
PRESSING IT INTO PLACE)
26
6) Assemble the filter, nozzles and connecting tube.
ATTENTION: IT IS ESSENTIAL THAT SPRAY NOZZLES ARE COMPLETELY
PERPENDICULAR TO THE CONNECTING TUBES, OTHERWISE THE CUBES AT THE
ENDS MAY NOT RECEIVE WATER.
7) Place the grill over the nozzles, with the back slots secure.
8) Install the curtain, ensuring that all of the strips can move freely.
9) Run the machine but DISCARD THE FIRST SET OF ICE CUBES
Cleaning the water inlet filters
These round wire gasket filters placed on either end of the water hose to mains, often
become blocked in the first few days of use, Especially When The Plumbing Installation Is
New. Clean them under a jet of water.
Checking for water leaks
This must be done whenever maintenance is carried out on the machine: check all water
connexions, braces, tubes and hoses in order to eliminate leaks and prevent breakages
and flooding.
SPECIAL ADVICE CONCERNING R-404 REFRIGERANT
§ R-404 is a mixture of 3 liquid-phase gases. On evaporating, the 3 component gases
separate
§ Always use the liquid phase valve (at the end of condenser or accumulator) for refills
and purges.
§ When replacing a compressor. wash inside of circuit with a suitable solvent + pump, dry
with nitrogen, REPLACE THE DRIER WITH ONE SUITABLE FOR R-404, which must
also have ANTI-ACID properties.
§ If you need to add oil, use one which is specific for R-404 (POE). If you are in doubt,
contact the machine manufacturer.
§ If there is a leak anywhere in the circuit where R-404 in the GAS phase, and a
refill of over 10% is required, then ALL THE GAS IN THE CIRCUIT MUST BE
PURGED AND THEN REFILL AS DESCRIBED PREVIOUSLY (LIQUID PHASE
VALVE).
27
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES SOLUTION
1) None of the electrics work.
2) All the electrics work except
compressor.
3) All the electrics work but the
compressor “klixons”
4) Everything appears to be
running correctly but no ice is
being made in the
evaporator.
A) The machine is not plugged in. A) Plug the machine.
B) The line fuse has blown. B) Replace fuse.
C) The current line is wrongly
connected in the junction box.
D) The cut off micro-switch is faulty or
wrongly adjusted.
E) Safety pressostat faulty. E) Replace.
A) Check switch installed in
electrical panel.
B) Faulty relay . B) Replace relay.
C) Faulty “Klixon”. C) Replace Klixon.
D) Faulty compressor. D) Replace compressor.
A) Voltage too low. A) Check voltage.
B) Dirty condenser. B) Clean condenser.
C) Obstruction in air circulation. C) Move machine to a correct position.
D) Fan has broken. D) Replace fan.
E) Starter capacitor faulty. E) Replace condenser.
F) Fan presostat faulty or wrongly
adjusted.
G) Water presostat valve faulty or
wrongly adjusted.
H) Cooling water pressostat is faulty
or badly adjusted.
J) Non-condensable gases in system. J) Purge system.
A) Unprimed pump. A) Check overflow, water bin for leaks,
B) Faulty pump. B) Replace.
C) Water does not enter into the bin. C) Check water entry valve and change
D) There is water in the gas circuit. D) Replace the drier, empty the
E) Water tray is dry. E) Check overflow pipe and for leaks.
F) Freezing system is faulty (dirty
condenser, water presostat or
entrance valve faulty or wrongly
adjusted insuficient refrigerant.
C) Check connections.
D) Check, adjust or change.
A) Select position 1..
F) Replace or adjust presostat.
G) Replace or adjust.
H) Adjust or change.
water entry valve and prime the
pump.
if is necessary.
refrigerant (vacuum) and charge
new refrigerant.
Inspect draining valve in machines
with automatic cleaning system.
Check the buoy valve mechanism
in DP90 and DP140.
F) Clean condenser, check all the
system components: pressostat,
water inlet valve, refrigerant
charge, etc.
28
5) Ice cubes form correctly but
do not unstick.
A) Faulty hot gas valve or wrongly
connected.
B) Low water pressure. B) Increase water pressure if possible.
C) Fan pressostat or condensation
pressostat too low or faulty.
D) Faulty condensation water inlet
valve (water cooled machines
without pressostatic)
E) Faulty water pressostatic valve or
too open (water cooled machines
with this valve)
F) Room or water temperature below
7ºC.
G) Faulty timer or micros. G) Check and replace if necessary.
H) Production time too long. The
cubes have flash outside the
mold.
I) Dirty water inlet filters. I) Clean filters.
6) Low ice production.
A) Blocked condenser or air access to
condenser.
B) In water-cooled machines:dirty
condenser, badly adjusted valve,
pressostat, faulty water inlet valve
or faulty pressostatic valve.
C) Faulty hot gas valve, doesn’t close
totaly.
D) Faulty fan or pressostat, faulty
inlet cooling water valve.
E) Refrigerant charge too high or too
low.
F) Faulty water inlet valve: leaks and
does not close fully.
G) Inefficient compressor. G) Replace.
7) Ice cube are so large that
they stick together and form a
plate of ice
A) Start of cycle thermostat adjusted
too low or faulty.
B) Timer wheels do not run. B) Tighten screws on timer.
C) Faulty timer motor. C) Check and replace.
D) Faulty micros on timer or wrongly
connected.
8) Ice cubes are too large. A) Cycle thermostat adjusted too
high.
A) Cycle thermostat adjusted too
finished.
low.
A) Verify and change if necessary.
(This can often be done by
removing flowmeter on faucet).
C) Adjust or replace.
D) Check and replace.
E) Adjust, repair or replace.
F) Increase the defrost time.
H) Adjust by reducing time to the cycle
thermostat.
A) Clean condenser; improve air
circulation by lifting machine from
floor and moving away from walls
and hot air sources .
B) Clean condenser; check, adjust or
replace.
C) Replace.
D) Check fan and re-adjust pressostat
or replace.
E) Adjust.
F) Check and replace.
A) Adjust and/or replace.
D) Verify connections and/or change.
A) Adjust thermostat.
A) Adjust thermostat. 9) Ice cubes are not completely
B) Low refrigerant charge. B) Add refrigerant until there is frost
formation 5 cm from the
compressor at the end of the cycle.
10) Ice cubes are empty, rough
edges and very white.
A) Insufficient water in water pan;
unprimed pump.
A) Eliminate water leak.
B) Obstructed spray nozzles. B) Clean nozzles.
C) The curtain strips does not fully
close and lose water.
C) Adjust the curtain strips or clean
the axle (it may has calcareous
impurities that avoid a smooth turn
of the strips).
11) Machine doesn’t stop even
when bin is full.
12) Ice cubes melt in bin. A) Obstruction in drains (inside the
A) Faulty bin thermostat or wrongly
adjusted.
A) Adjust and/or replace.
A) Unblock.
machine or in premises).
29
Loading...