Ice-Tech FDHD Series User manual

SERVICE MANUAL
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SERVICE MANUAL
SERIE FDHD
ICE CUBE MAKERS - UNDERCOUNTER MODELS
FDHD 50
FDHD 70
FDHD 100
FDHD 150
ICE CUBE MAKERS - MODULAR MODELS
FDHD 215
FDHD 415

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INDEX
1. INTRODUCTION...............................................................................................................................4
1.1.- Warning........................................................................................................................................4
1.2.-Reception of the machine..............................................................................................................6
2. INSTALLATION ................................................................................................................................7
2.1.- Placing of the ice maker ...............................................................................................................7
2.2.-Levelling of the ice maker..............................................................................................................7
2.3.-Installation of modular equipments on top of bins..........................................................................8
2.4.-Minimum distance to obstacles......................................................................................................8
2.5.- Water supply connection ..............................................................................................................9
2.6.-Drain connection............................................................................................................................9
2.6.1 –DRAIN FORCED CONNECTION............................................................................................10
2.5.- Electrical connection...................................................................................................................11
3. PRIOR CHECKING AND START-UP..............................................................................................12
3.1.- Prior checking.............................................................................................................................12
3.2.- Start-Up......................................................................................................................................12
4. SEQUENCE OF OPERATION UNDERCOUNTER MODELS (NG).................................................14
4.1. Undercounter Control Board ....................................................................................................14
4.2.- Alarms........................................................................................................................................16
4.2.1 Safety high pressure switch....................................................................................................17
4.2.2 Long harvest ..........................................................................................................................17
4.2.3 Ice production cycle timeout...................................................................................................17
4.2.4 Faulty temperature probe.......................................................................................................17
4.3 PCB push button function.............................................................................................................17
4.4 DRAIN FORCED ..........................................................................................................................18
4.4.1 SEQUENCE OF OPERATION..........................................................................................18
4.4.2 CONTROL BOARD...........................................................................................................20
5. SEQUENCE OF OPERATION -MODULAR MODELS (MS)............................................................21
5.1.- Initial Start-up.............................................................................................................................21
5.2.-MS Control Board........................................................................................................................23
5.3.- Alarms........................................................................................................................................24
5.4.- Safety pressure ..........................................................................................................................24
5.5.- Long harvest...............................................................................................................................25
5.6.-Ice production cycle timeout ........................................................................................................25

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5.7.-Short production cycle.................................................................................................................25
5.8.-Water filling timeout.....................................................................................................................25
5.9.- Machine Stacking.......................................................................................................................26
6Refrigeration diagram......................................................................................................................27
7MAINTENANCE AND CLEANING PROCEDURES.........................................................................28
7.1.- Cleaning water distribution system for under counter models (NG).............................................28
7.2.- Cleaning water distribution system for modular models (MS)......................................................31
7.3.- Cleaning the bins (for undercounter models)..............................................................................35
7.4.- Cleaning the condenser..............................................................................................................35
7.5.- External cleaning of the machine................................................................................................36
7.6.- Water leakage checking .............................................................................................................36
8TECHNICAL SPECIFICATIONS.....................................................................................................37
8.1.- Dimensions.................................................................................................................................38
8.2.- SPECIFICATION SHEETS.........................................................................................................38
9USER TROUBLESHOOTING GUIDE.............................................................................................39
9.1.- Undercounter models .................................................................................................................39
9.2.- Modular models..........................................................................................................................40
10 WIRING DIAGRAMS......................................................................¡Error! Marcador no definido.
10.1.- undercounter models...................................................................¡Error! Marcador no definido.
10.2.- MODULAR ONE PHASE.............................................................¡Error! Marcador no definido.

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1. INTRODUCTION
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.
1.1.- WARNING
This appliance is intended to be used in household and similar applications such as staff kitchen areas in
shops, offices and other working environments; farmhouses and by clients in hotels, motels and other
residential type environments; bed and breakfast type environments; catering and similar non-retail
applications.
The installation of this equipment should be done by the Service Department.
The socket should always be placed on an accessible location.
When positioning the appliance, ensure the supply cord is not trapped or damaged.
Do not locate multiple portable socket-outlets or portable power supplies at the rear of the appliance.
Always disconnect the power supply from the machine before any cleaning or maintenance service.
Any change needed on the electrical installation for the appropriate connection of the machine, should
be exclusively performed by qualified and certified professional personnel only.
Any use by the ice maker not intended to produce ice, using potable water, is considered inappropriate.
It is extremely dangerous to modify or intend to modify this machine and will void warranty.
The appliance is not to be used by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction.
Children being supervised not to play with the appliance.
Connect to potable water supply only. To see “Installation” chapter (5).
This machine is not intended to be used outdoors nor exposed to the rain.
The machine should be connected using the power cord supplied with the equipment.
It is mandatory to ground the equipment to avoid possible electric shock on individuals or damages to
the equipment. The machine should be grounded pursuant local and/or national regulations. The
manufacturer shall be held harmless in case of damages arising due to the lack of the ground
installation. To see “Installation” chapter (7).

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In order to assure the proper operation and efficiency of this equipment, it is extremely important to
follow the recommendations of the manufacturer, especially those related to cleaning and maintenance
operations, which should be performed by qualified personnel only.
CAUTION: The intervention of non-qualified personnel, besides of being dangerous, could result in
serious malfunctioning. In case of damages, contact your distributor. We recommend always using
original spare parts.
ICETECH reserves the right to make changes in specifications and design without prior notice.
This signal indicates “Risk of fire / Flammable materials” because of the use of flammable refrigerant.
For compression-type appliances that use flammable refrigerants should additionally consider the
substance of the warnings listed below:
•Keep ventilation openings, in the appliance enclosure or in the built-in structure, clear of
obstruction.
•Do not use mechanical devices or other means to accelerate the defrosting process, other than
those recommended by the manufacturer.
•Do not damage the refrigerant circuit.
•Do not use electrical appliances inside the food storage compartments of the appliance, unless
they are of the type recommended by the manufacturer.
•Do not store explosive substances such as aerosol cans with a flammable propellant in this
appliance.
In case of a flammable refrigerant leakage:
•Do not generate flames close to the appliance.
•Do not switch on/off or plug in/off the appliance.
•To ventilate immediately the area where appliance is located by opening doors and/or windows.
•To call to an authorized technical service.
Disposal of the ice maker: ICETECH encourages to follow the regulations of each country regarding eco-
friendly disposal of electric and electronic devices such this one. User who is wanting to dispose of this
equipment must contact the manufacturer and follow the method to appropriate differentiated collection
for the subsequent treatments.

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1.2.-RECEPTION OF THE MACHINE
Inspect the outside packing. In case of damages, make the corresponding claim to the carrier. To
confirm the existence of damages, unpack the machine in the presence of the carrier and state
any damage on the equipment on the reception document or freight document.
Always state the machine number and model. This number is printed on three locations:
(1) Packing: On the outside, it contains a label with the serial number.
(2) Exterior of the unit: On the back panel of the unit, there is a label with the same characteristics
as the previous one.
(3) Nameplate: On the back of the machine.
Check that in interior of the machine the installation kit is complete and comprises:
•Ice scoop
•¾ inlet water hose
•22 mm drain hose
•1 filter
•User manual.
•Warranty and serial number.
CAUTION: All packing elements (plastic bags, carton boxes and wood pallets) should be kept
outside the reach of children, as they are a source of potential hazard.

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2. INSTALLATION
2.1.- PLACING OF THE ICE MAKER
This ice maker is not designed for outdoor operation. The icemaker should not be located next to
ovens, grills or other high heat producing equipment.
The FDHD machines are designed to operate at room temperature between 10ºC and 43ºC .
There may be some difficulties in ice slab removal under the minimum temperatures. Above the
maximum temperature, the life of the compressor is shortened and the production is substantially
lower.
The air cooled FDHD (undercounter) ice makers take the air through the front section, and drive
it off through the back and also front louvers due to their new oblique condenser structure and
placement . Do not place anything on the top of ice maker or facing the front grille. In case the
front grille is either total or partially obstructed, or due to its placement it receives hot air from
another device, we recommend, in case it is not possible to change the location, to install a water
cooled machine.
The air cooled FDHD (modular) ice makers take the air through the back section and drive it off
through the two lateral louvers. In the case it is not possible to respect the minimum distances
recommended (see the picture in point 3.3) for these machines we recommend to install a water
cooled unit.
The location must allow enough clearance for water, drain and electrical connections in the rear
of the ice machine. It is important that the water inlet piping does not pass near sources of heat
so as not to lose ice production.
2.2.-LEVELLING OF THE ICE MAKER
Use a level on top of ice machine in order to ensure the equipment is perfectly leveled.
Screw the leveling legs onto the bottom of the ice machine as far as possible.
Move the machine into its final position.
Use a level on top of the ice machine. Adjust each leg as necessary to level the ice machine from
front to back and side to side.
ATTENTION: There is an optional 90mm high casters kit that can be used in substitution of the
standard legs. These wheels are supplied with the corresponding installation instructions.

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2.3.-INSTALLATION OF MODULAR EQUIPMENTS ON TOP OF BINS
Modular ice makers should be installed on top of bins, following the instructions contained in this
manual.
The resistance and stability of the container-machine/s assembly should be verified as well as
the fastening elements. Follow bin manufacturer instructions.
2.4.-MINIMUM DISTANCE TO OBSTACLES
Please see below the recommended minimum distances for proper operation and efficient
service.
COMPACT MODELS MODULAR MODELS
CONNECTION DIAGRAM:
The location must allow enough clearance for water drain and electrical connections in the rear
of the ice machine.

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UNDERCOUNTER MODELS MODULAR MODELS
2.5.- WATER SUPPLY CONNECTION
The quality of the water supplied to the ice machine will have an impact on the time between
cleanings and ultimately on the life of the product (mainly in water cooled units). It also will have
a remarkable influence on the appearance, hardness and flavor of the ice.
Local water conditions may require treatment of the water to inhibit scale formation, improve taste
and clarity. If you are installing a water filter system, refer to the installation instructions supplied
with the filter system.
Pressure should be between 0.1 and 0.6 MPa (1 - 6 bar). If pressure overpasses such values,
install a pressure regulator.
The water connection needs to be dedicated (only piece of equipment hooked to the water line).
Water line from the water valve to the ice machine needs to be ¼” nominal ID tubing.
ATTENTION: The machine shall be plumbed (with adequate backflow protection) according to
applicable national and local regulations.
2.6.-DRAIN CONNECTION
Drainage should be located lower to the machine level, at 150mm minimum.
It is convenient that the drain hose is 30mm inside diameter and with a minimum gradient of
3cm/metre, see figure.
6’’(15cm)
Plug
Socket
Tap
Water inlet
Bin drain
Water drain
4’’(10c
Plug
Socket
Tap
Water inlet
Bin
drain

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2.6.1 –DRAIN FORCED CONNECTION
This version of drain force allows an installation of the machine where the drain can be located 30
meters horizontally and 1.5 meters high from the machine's water outlet.
If the drain pipe runs incorrectly, the pump may not be able to drain the water, because the flow of the
pump may be influenced due to the existence of stored air within the circuit.
Correct
Incorrect
Incorrect

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2.5.- ELECTRICAL CONNECTION
It is mandatory to ground the equipment. To avoid possible electric shock on individuals or
damages to the equipment, the machine should be grounded pursuant local and/or national
regulations as the case may be.
The manufacturer shall be held harmless in case of damages arising due to the lack of the ground
installation.
In case the supply cable is damaged, it should be replaced by a cable of special assembly to be
furnished by the manufacturer or after-sales service. Such replacement should be performed by
qualified technical service only.
The machine should be places in such a way as to allow a minimum space between the back and
the wall to allow an easy access and without risks to the cable plug.
Safeguard the socket. It is convenient to install adequate switches and fuses.
ATTENTION: The appliance requires an independent power supply of proper capacity. See the
nameplate for electrical specifications. Failure to use an independent power supply of proper
capacity can result in a tripped breaker, blown fuse, damage to existing wiring, or component
failure. This could lead to heat generation or fire.
Voltage is indicated in the nameplate and on the technical specifications section of this manual.
Variation on voltage above the 10% stated on the nameplate could result on damages or prevent
the machine start-up.

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3. PRIOR CHECKING AND START-UP
3.1.- PRIOR CHECKING
a) Is the machine leveled?
b) Voltage and frequency are the same as those on the nameplate?
c) Are the drains connected and operating?
d) Will the ambient temperature and water temperature remain in the following range?
ROOM
WATER
MAXIMUM
43ºC
30ºC
MINIMUM
10ºC
10ºC
e) Is water pressure appropriate?
MINIMUM
0.1 MPa (1 bar)
MAXIMUM
0.6 MPa (6 bar)
In case inlet water pressure is higher than 0.6 MPa (6 bar), install a pressure regulator.
3.2.- START-UP
Once the installation instructions are followed (ventilation, site conditions, temperatures, water
quality, etc.), proceed as follows:
1.- Open the water inlet. Verify the no existence of leakages.
2.- For under counter models open the door and remove the protection elements on the shield.
For modular models remove the two locking screws on top of machine, take off the front panel
and remove protection elements on the shield and also on the thickness sensor.
3.- Verify that the shield moves freely. Formodular models verifyalso the thickness sensormoves
freely. And the water tray is in place

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4.- Connect the machine to the power supply.
5.- For under counter models: push the switch on the machine front side. For modular models:
push the switch found on the back of the machine and then set the ice-wash switch to the position
ice.
6.- Verify that there are no vibrations or frictions on the elements.
7.- Verify that the water fall to the evaporator is occurring uniformly and all ice cubes are properly
watered.
8.- Close door (for under counter models) / Replace the front panel in its place (for modular
models).
9.- For modular models: Verify the ice slab with the pictures below. In case the thickness sensor
needs to be regulated, rotate the thickness adjustment screw CW to increase bridge thickness.
Rotate CCW to decrease bridge thickness. For under counter models adjust the cycle time dip
switches (see point 4.1).
Damages due to the lack of maintenance and cleaning operations are not included on the
warranty.
Thickness
sensor

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4. SEQUENCE OF OPERATION UNDERCOUNTER MODELS (NG)
Once you connect the machine there is a time delay of 2 minutes during which the water valve is activated
to ensure the water tray is filled.
Once the time is up, the compressor starts and the pump which recirculates the water from the water tray
to the upper distributor which provides a soft and uniform flow of water over the evaporator cells, in which
the water starts freezing.
When the temperature probe at the end of the evaporator reaches an adjusted value Tc (-2/-4°C) , the
fabrication continues the fixed time with the combination of dip-switches 1-4 (see table). This way we can
ensure the filling of the evaporator is correct in different working conditions.
Once the fabrication is over the harvest phase starts. The pump stops, the hot gas valve open and the
water inlet valve open only during the time fixed in the dip-switches 5-7. Water is sprayed over the back of
the evaporator helping unstick the slab and precooling it for the next cycle. This heat recover enhances
the machine’s energetic efficiency.
Once the ice slab falls into the bin, the evaporator curtain opens and closes. A magnet placed on the side
of this curtain activates the sensor and ends the harvest cycle, advancing to the fabrication cycle.
Once the ice bin is full, the slab does not go out completely, and this prevents the curtain from closing. If
it remains open more than 60 seconds the machine goes into full bin state. All the components shut down
until the ice is retired, the curtain closes, and a new cycle starts.
4.1. UNDERCOUNTER CONTROL BOARD

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PCB connections
Outputs
C
compressor
B
Water pump
EA
Water inlet valve
GC
Hot gas valve.
Inputs
SC
Evaporator temperature NTC probe
P
Safety pressure switch
MC
Curtain switch
N
PCB push button
LED signalling
Next to each out relay there is an orange led. Signals relay on
Next to each input terminal there is an orange led marking input active.
There are four additional red leds that signal machine status (continuous) or alarm (flashing)
Status signaling . Continuous led
LE1
LE2
LE3
LE4
Start up delay
X
Ice cycle T>Tc
X
X
Ice cycle T<Tc
X
Harvest
X
Full bin
X
Alarm signaling . Flashing led
LE1
LE2
LE3
LE4
Safety pressure switch
X
Ice cycle timeout
X
Harvest cycle timeout
X
Faulty temperature probe
X
Dip switches setting
dip
Descripción (* factory setting) comprobar
1-4
tf - ice production timer. See table
5-7
tw - Water input timer. See table.
8
Tc - Evaporator temperature for timer start.
ON=-2ºC / OFF=-4ºC
9
Not used

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10
Safety high pressure switch trip function.
ON= automatic reset (minimum stop 30 min.)
OFF= manual reset (power OFF-ON)
11
Timeout alarms operation
ON = activated
OFF = unactivated
12
Software selection.
Important: Always OFF for FDHD models
ICE / WATER TIMER SETTING
SW1
TF (MIN)
SW1
TW (SEG)
1
2
3
4
5
6
7
OFF
OFF
OFF
OFF
4
OFF
OFF
OFF
30
ON
OFF
OFF
OFF
6
ON
OFF
OFF
40
OFF
ON
OFF
OFF
8
OFF
ON
OFF
50
ON
ON
OFF
OFF
10
ON
ON
OFF
60
OFF
OFF
ON
OFF
12
OFF
OFF
ON
70
ON
OFF
ON
OFF
14
ON
OFF
ON
80
OFF
ON
ON
OFF
16
OFF
ON
ON
90
ON
ON
ON
OFF
18
ON
ON
ON
100
OFF
OFF
OFF
ON
20
ON
OFF
OFF
ON
22
OFF
ON
OFF
ON
24
ON
ON
OFF
ON
26
OFF
OFF
ON
ON
28
ON
OFF
ON
ON
30
OFF
ON
ON
ON
32
ON
ON
ON
ON
34
4.2.- ALARMS
They detect operational malfunctions. They are indicated with the flashing status Leds LE1-4.
During some alarms a second operation retry attempt is carried out and if repeated again, the machine
will stop. Signaling should be indicated since the first failure occurs. If the second retry attempt is ok, the
signaling will switch off.
In case that a machine stop has been caused by alarm, the reset is done by switching OFF and ON the
main switch. If the dip-switch 11 OFF, time alarms are not to be followed.

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4.2.1 SAFETY HIGH PRESSURE SWITCH
When the pressure contact (P) trips, instantly, all outputs switch over to off position.
When it is closed again, there are two possibilities:
- Dip-switch 10 OFF. Manual reset. The machine remains stopped until reset to Initial start-up.
- Dip-switch 10 ON. Automatic reset. The machine check pressure switch status every 30 min. When
closed, the machine will continue at the position where it was.
* Signalling: Flashing LE1.
4.2.2 LONG HARVEST
If the harvest time is longer than 4 min. without activation of the curtain micro contact (MC), the harvest
is interrupted, switching over to the production cycle. If the same happens again at the next harvest, the
machine will stop.
* Signalling: Flashing in LE3.
4.2.3 ICE PRODUCTION CYCLE TIMEOUT
If during the production cycle, evaporator temperature probe has not reached the set temperature Tc in
more than 60 min, the machine will stop until reset.
* Signalling: Flashing in LE2.
4.2.4 FAULTY TEMPERATURE PROBE
If PCB detects that evaporator temperature probe is broken or unconnected, the machine will stop
* Signalling: Flashing in LE4.
Probe type is NTC and resistance value must be 10kΩ at 25°C.
4.3 PCB PUSH BUTTON FUNCTION
Function depends on the unit status:
- Start up timer: Finish initial delay y passes to ice production stage
- Ice production. Switches to harvest
- Harvest. Switches to Ice production
Wash cycle activation.
Keep pressed the button while switching on main front switch. Wash cycle is activated and only the
water recirculation pump is running. There is a maximum time for this cycle of 30 min. After this time,
pump stops.
Wash cycle is finished by switching off main power.
Read cleaning and sanitizing instructions for proper usage of this function.

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4.4 DRAIN FORCED
4.4.1 SEQUENCE OF OPERATION
While the machine is turn on, there is water that need to be evacuated between each cycle. There are 2
possible outlet water, one is if the ice in the storage bin melts (#1) and the other is when the production
time ends, the water electro valve opens and fills the water tray(#2) to renovate the water. The excess of
water goes out by the overflow (#3) to the drain force water reservoir (#4).
When the water reservoir is full of water covering the 2 electrodes (#5), the pump (#6) turns on and
evacuates water for 5 seconds. After 5 seconds, the pump turns off if the electrodes are not covered by
the water, otherwise, the pump will start again for 5 seconds.
In case that the system does not work for any issue, the water will flood the ice bin. There is a ventilation
tube (#7) that allows the system to remove any air that may remain in the water reservoir. The Vent tube
must be always over the mouth of the front door (#8).
In case that the pump works for 5 minutes continuously, it will stop for 5 seconds automatically in order
to refrigerate.
The system has a way to evacuate the water inside the water reservoir in a manual way. There is a plug
(#9) in one of the plastic tube, by retiring this plug, it is possible to evacuate all the water.
Also, the system has a Check valve(#10) that does not allow the water to came back to the water
reservoir.

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4.4.2 CONTROL BOARD
PCB connections
Outputs
B
Water pump
Inputs
Lw
Water Level Sensor
LED signalling
There are two LEDs that signals machine status
Status signaling. Continuous led
LED5
LED6
PUMP RUNNING
X
WATER LEVEL SENSOR
ON
X