1010 Single-phase condensing unit ............................................................. 44
1410 Single-phase condensing unit ............................................................. 45
1010 3-phase condensing unit .................................................................46
1410 3-phase condensing unit ................................................................. 47
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 3
Page 4
Welcome to Follett
Follett equipment enjoys a well-deserved reputation for excellent performance, long-term reliability and outstanding
after-the-sale support. To ensure that this equipment delivers the same degree of service, we ask that you review
the installation manual (provided as a separate document) before beginning to install the unit. Our instructions are
designed to help you achieve a trouble-free installation. Should you have any questions or require technical help at
any time, please call our technical service group at (877) 612-5086 or +1 (610) 252-7301.
Before you begin
After uncrating and removing all packing material, inspect the equipment for concealed shipping damage. If
damage
is found, notify the shipper immediately and contact Follett Corporation so that we can help in the ling of a claim,
if necessary.
Check your paperwork to determine which model you have. Follett model numbers are designed to provide
information about the type and capacity of Follett equipment. Following is an explanation of the different model
numbers in the series.
Chewblet® Ice Machine Model Number Configurations
HC1400CSVA
ConfigurationApplication
S RIDE™
(RIDE remote
ice delivery
equipment)
T Top-mount
MC Maestro™
Chewblet
(400 Series)
HC Horizon
Chewblet
(1000, 1400,
1650 Series)
HM Horizon
Micro Chewblet
C 208-230/60/1 (icemaking head)
®
Self-contained only.
D 115/60/1 (icemaking head)
Self-contained and remote. If remote
unit, high side is 208-230/60/1.
E 230/50/1 (icemaking head)
Self-contained only.
F 115/60/1 (icemaking head)
Remote only. High side is
208-230/60/3.
400 up to
454 lbs
(206kg)
1000/1010
up to
1036 lbs
(471kg)
1400/1410
up to
1450 lbs
(658kg)
1650 up to
1580 lbs
(717kg)
CondenserSeriesVoltageIcemaker
A Air-cooled, self-contained
W Water-cooled, self-contained
R Air-cooled, remote condensing unit
N Air-cooled, no condensing unit for
connection to parallel rack system
V Vision™
H Harmony™
B Ice storage bin
J Drop-in
M Ice Manager
diverter valve
system
CAUTION
• Warranty does not cover exterior or outside installations.
• Moving parts. Do not operate with front cover removed.
• Hot parts. Do not operate with cover removed.
• To reduce risk of shock, disconnect power before servicing.
• Drain line must not be vented.
• Water supply must have particle ltration.
• Most ice machine cleaners contain citric or phosphoric acid, which can cause skin irritation. Read caution label
on product and follow instructions carefully.
• Ice is slippery. Maintain counters and oors around dispenser in a clean and ice-free condition.
• Ice is food. Follow recommended cleaning instructions to maintain cleanliness of delivered ice.
4 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 5
Specications
Electrical
Separate circuit and equipment ground required.
Evaporator unit
Standard electrical: 115/60/1
Maximum fuse: 15A
Amperage: 5A
§ 3/8" OD push-in water inlet (connection inside machine) - 3/8" OD tubing required
§ 3/4" MPT
§ 3/4" drain line must slope a minimum of 1/4" per foot (6 mm per 30.4 cm run).
§ Drain to be hard piped and insulated.
§ Water shut-off recommended within 10 feet (3 m).
§ Follett recommends installation of Follett water lter system (part# 00130286) in ice machine inlet water line.
Ambient
Evaporator unit
Air temperature 100 F/38 C max. 50 F/10 C min.
Water temperature 90 F/32 C max. 45 F/7 C min.
Water pressure 70 psi max. (483 kPa) 10 psi min. (69 kPa)
Condenser unit
Air temperature 120 F/49 C max. –20F/–29C min.
Refrigeration
§ 3/8" liquid line
§ 5/8" suction line
Note:Rack system installations require a capacity of 10,000 BTU/hr for 1010 machines and 13,000 BTU/hr for
1410 machinesat 0 F (–18 C) evaporator temperature. Evaporator pressure regulator (not supplied) is
required.
Weight
Evaporator unit: 125 lbs (57 kg)
Condensing unit: 225 lbs (102 kg)
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 5
Page 6
Ice production
1010 ice machine capacity/24 hrs.
Ambient Air Temperature F/C
F6070809010 0
C1621273238
501051978906834763lbs
104774444 11379346kg
60994925855796737lbs
16451420388361335kg
709378718057587 11lbs
21425395365344323kg
80904839774727680lbs
27410381351330309kg
90872807743696648lbs
Potable Water Temperature F/C
32396366337316294kg
1410 ice machine capacity/24 hrs.
Ambient Air Temperature F/C
F6070809010 0
C1621273238
5014 74 1372 1269 1212 115 4 lbs
10669623576550524kg
6013851292119 811481097lbs
16628586544521498kg
701296121211 2 71083 1039lbs
215885505 11492472kg
80123911551072 1030988lbs
27562524487468449kg
909011 8 11099 1017976lbs
Potable Water Temperature F/C
3232536499462425kg
6 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 7
Dimensions and clearances
§ Entire front of ice machine must be clear of obstructions/connections to allow removal.
§ 1" (26mm) clearance above ice machine for service.
§ 1" (26mm) minimum clearance on sides.
§ The intake and exhaust air grilles must provide at least 250 sq in (1615 sq cm) of open area.
§ Air-cooled ice machines – 18" (458 mm) minimum clearance between discharge and air intake-grilles.
1410 ONLY
1410 ONLY
NEMA 5-15
RIGHT ANGLE
A
C (1410 ONLY)
B
K
D (1410 ONLY)
A 21.26" (54.0 cm)
B 21.11" (53.6 cm)
C 23.77" (60.4 cm)
E
D 2.66" (6.8 cm)
E 19.59" (49.8 cm)
F
F 16.00" (40.6 cm)
G 2.73" (6.9 cm)
H 2.28" (15.3 cm)
I 6.04" (5.8 cm)
G
H
I
J
J 22.00" (55.9 cm)
K 22.69" (57.6 cm)
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 7
Page 8
Condensing unit
26.08"
(662 mm)
36.25"
(921 mm)
25.5"
(648 mm)
8 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 9
Operation
Cleaning/sanitizing and preventive maintenance (all models)
Note: Do not use bleach to sanitize or clean the icemaker.
Preventive maintenance
Periodic cleaning of Follett’s icemaker system is required to ensure peak performance and delivery of clean,
sanitary ice. The recommended cleaning procedures that follow should be performed at least as frequently as
recommended, and more often if environmental conditions dictate.
Cleaning of the condenser can usually be performed by facility personnel. Cleaning of the icemaker system,
in most cases, should be performed by your facility’s maintenance staff or a Follett authorized service agent.
Regardless of who performs the cleaning, it is the operator’s responsibility to see that this cleaning is performed
according to the schedule below. Service problems resulting from lack of preventive maintenance will not be
covered under the Follett warranty.
Weekly exterior care
The exterior may be cleaned with a stainless cleaner such as 3M Stainless Steel Cleaner & Polish or equivalent.
1. Use a vacuum cleaner or stiff brush to carefully clean condenser coils of air-cooled icemakers to ensure
optimal performance.
2. When reinstalling counter panels in front of remote icemakers, be sure that ventilation louvers line up with
condenser air duct.
Semi-annual evaporator cleaning (every 6 months)
WARNING
• Wear rubber gloves and safety goggles (and/or face shield) when handling ice machine cleaner or sanitizer.
CAUTION
• Use only Follett approved SafeCLEAN Plus™ cleaning/sanitizing solution (part #01050863).
• DO NOT USE BLEACH.
• It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling.
• Read and understand all labels printed on packaging before use.
Note: Complete procedure for cleaning an sanitizing MUST be followed. Ice must be collected for 10minutes
before putting ice machine back into service.
Fig. 1
1. Press the CLEAN button. The machine will drain. The
auger will run for a short time and then stop. Wait for
the LOW WATER light to come on.
LO WATER
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 9
Page 10
2. Mix 1 gal. (3.8L) 120 F (49 C) water and one 7oz.
(198g) packet of Follett SafeClean Plus (P/N
01050863).
3. Using a 1 quart (1L) container, slowly ll cleaning cup
until CLEANER FULL light comes on. Do not overll.
4. Place one Sani-Sponge™ in remaining sanitizing and
cleaning solution and retain for Step 9.
Note: Do not use bleach to sanitize or clean the icemaker.
5. Replace cover on cleaner cup. Machine will clean,
then ush 3 times in approximately 15 minutes. Wait
until machine restarts.
Fig. 2
CLEANER FULL
Fig. 3
6. To clean/sanitize ice transport tube – Press power
switch OFF
15
Fig. 4
10 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 11
7. Disconnect coupling as shown.
8. Using disposable food service grade gloves, insert
dry Sani-Sponge.
9. Insert Sani-Sponge soaked in SafeClean Plus (from
Step 4).
10. Push both Sani-Sponges down ice transport tube
with supplied pusher tube.
Fig. 5
Fig. 6
1
16"
(407 mm)
11. Remove and discard 16 inch (407 mm) pusher tube.
2
3
Fig. 7
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 11
Page 12
12. Reconnect coupling. Press power switch ON. Ice
pushes Sani-Sponges through ice transport tube.
13. Place a sanitary (2 gal. or larger) container in bin
or dispenser to collect Sani-Sponges and ice for 10
minutes.
14. Collect 5.5 lbs (3 kg) of ice from unit. Discard ice and
Sani-Sponges.
Fig. 8
Fig. 9
12 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 13
Service
Ice machine operation (all models)
Follett’s ice machine consists of ve distinct functional systems covered in detail as follows:
§ Water system
§ Electrical control system
§ Mechanical assembly
§ Refrigeration system
§ Bin full
The Horizon ice machine overview
The Follett Horizon ice machine uses a horizontal, cylindrical evaporator to freeze water on its inner surface. The
refrigeration cycle is continuous; there is no batch cycle. The evaporator is ooded with water and the level is
controlled by sensors in a reservoir. A rotating auger (17 RPM) continuously scrapes ice from the inner wall of the
evaporator. The auger moves harvested ice through the evaporator into an ice extrusion canal. The ice is forced
through a restrictive nozzle that squeezes out the water and creates the Chewblet. The continuous extrusion
process pushes the Chewblets through a transport tube into a dispenser or bin.
A solid state PC board controls and monitors the functionality of the ice machine. In addition to sequencing
electrical components, the board monitors various operational parameters. A full complement of indicator lights
allows visual status of the machine's operation. Additionally, the PC board controls the self-ushing feature of the
ice machine. The evaporator water is periodically drained and replenished to remove minerals and sediment.
A unique “bin full” detection system is incorporated in the Horizon ice machine. A switch located at the ice
discharge port of the machine detects the position of the transport tube. When the bin lls up with ice, the transport
tube moves out of the normal running position, and the switch turns the ice maker off. A domed housing at the end
of the transport tube contains the ice extrusion loads during shut down.
Harvest system diagram
Ice Transport Tube
Water Inlet
Compression
Nozzle
Auger
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 13
Page 14
Water system
The water level in the evaporator is controlled by a feed solenoid and level detecting sensors. Referencing the
diagram below, water sensing probes extend down into the reservoir at the end of the evaporator assembly. The
system works via electrical conductivity as follows:
The probe labeled B is the common. When water is between any of the other probes and the common, the PC
board will sense the activation. During normal operation, the water level rises and falls between the Normal
High and Normal Low probes. As water is consumed to make ice, the level will fall until the Normal Low probe is
exposed, triggering the water feed solenoid on. Water will ll until the Normal High sensor is activated.
Note: The potable water total dissolved solids (TDS) content must be greater than 10 ppm for the water control
system to function properly. If using reverse osmosis water ltration system, ensure TDS level is greater than
10 ppm.
Water system diagram
Water level diagram
Common
Normal Hi
Normal Lo
Normal
Operating
Range
14 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 15
“Bin full” detection system
The Follett Horizon ice machine incorporates a unique “bin full” detection system that consists of the shuttle and
actuator. The shuttle incorporates a ag and switch. Referencing the gure below, the normal running position
of the ag is down, and the switch is closed. When the bin lls to the top and ice can no longer move through
the tube, the machine will force the shuttle ag up, opening the switch and shutting the machine off. The shuttle
actuator, located above the ice bin allows the ice to curl up within it when the bin is full. In this way, there are no
loads generated that would tend to lift off the lid of the bin.
Shuttle ag and sensor
Shuttle actuator
Running
RunningOff
Off
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 15
Page 16
Electrical system
FLASHINGON or OFF
Legend:
OFFON
ATTENTION!
To prevent circuit breaker/Hi-amp overload, wait 5 minutes before
restarting this unit. This allows the compressor to equalize and the
evaporator to thaw.
Normal control board operation
The PC board indicator lights provide all the information necessary to determine the machine's status. Green
indicator lights generally represent “go” or normal operation; Yellow indicators represent normal off conditions; Red
indicators generally represent alarm conditions, some of which will lock the machine off.
A ashing green light labeled POWER indicates power to the machine. All other normal operation status indicators
are covered as follows:
Ice machine dispositionOperating conditions
1. Ice machine is making ice.
.
2. Ice machine is not making ice.
DIP Switch Settings
1. Normal running.
2. Normal time delay. When the bin lls with ice, the LOW BIN
light goes out momentarily and the refrigeration and auger
drive systems immediately shut down. (Note: The fan motor
will continue to run for 10 minutes to cool condenser) The TIME
DELAY light comes on, initiating the time delay period. When the
time delay expires, the machine will restart provided that the LOW
BIN light is on.
16 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 17
Error faults:
The Horizon PC board monitors various operating parameters including high pressure, auger gearmotor amperage
limits, clogged drain, and low water alarm conditions. There are three types of errors namely “soft” (time delay)
"hard" (reset), and “run”.
§ Soft errors will automatically reset after the 1 hour time delay or can be reset by cycling power.
§ Hard errors must be reset on the control board.
§ Run errors will give an indication of a problem, but will allow continuous normal operation.
Soft errors:
HI AMPS: The PC board monitors the amperage of the auger motor. Should the gear motor experience current
draw above the allowable limit, the machine will shut down and the TIME DELAY and HI AMP will be illuminated.
After the time delay the machine will restart and the TIME DELAY and HI AMP will clear.
LO WATER: During operation, the water level cycles between the normal low and normal high sensors. Should the
water be shut off to a running machine, a soft error will occur. The error sequence is as follows: During operation,
the water level falls to the normal low sensor, and when it does the water feed solenoid is energized. If water is not
detected at the normal low sensor within 10 seconds, a soft error will occur. The machine will shut down, but the
water feed solenoid will remain energized. Should water return, it will ll to the normal low sensor and the machine
will resume normal operation. The error will clear automatically.
HI PRESSURE: Should the refrigeration pressure rise above 425 psi, the machine will shut down and the TIME
DELAY and HIGH PRESSURE will be illuminated. After the time delay, and if the pressure has fallen back below
the reset point of 295 psi, the machine will restart and the TIME DELAY and HIGH PRESSURE will clear.
Hard error:
DRAIN CLOG: The drain clog sensor, located in the chassis will detect the presence of water just below the top
edge of the chassis. After the sensors are dired off, the machine must be reset on the control board to resume
operation.
Run errors:
DRAIN CLOG: When the machine shuts down on a full bin and there has been 30 minutes of cumulative
compressor run time, the machine will purge before starting. During this purge, if water does not get below the low
probe in the reservoir within 20 seconds, the Drain Clog LED will light. The machine will continue to run but this is
an indication of a poorly draining machine and must be addressed.
Relay output indication:
Each relay on the board has an indicator light associated with its output. For example, when the relay for the water
feed solenoid is energized, the adjacent indicator light glows green.
Evaporator ushing sequence:
During operation, the purge solenoid will open in order to drain water. There are two drain settings to choose from:
High TDS or Low TDS. (There is a rocker switch behind the front cover of the machine.) The intent is to drain the
Total Dissolved Solids from the machine while it makes ice.
While ice is being made, the TDS of the water in the evaporator increases in TDS concentration. Without periodic
draining, the TDS levels will climb to very detrimental levels, levels that will cause scale to form and cause poor
machine operation. The Low TDS setting will allow the machine to operate for one hour before going through the
ushing sequence; the High TDS setting will allow the machine to run for 10 minutes before going through the
ushing sequence.
The ushing sequence toggles the purge and ll solenoids three times. That is, the purge solenoid will energize
until the water level drops below the low probe. The ll solenoid then energizes until water reaches the high probe,
and so on for 3 cycles.
Typically, High TDS might be considered levels above 200 PPM, but local experience and varying water chemistry
may compel a High TDS setting for best performance in even lower TDS levels.
Off cycle: At the completion of off-cycle time delay, the machine checks for a cumulative 30 minutes of ice making
time since the last off-cycle ush. If the cumulative ice making time exceeds 30 minutes, the machine will open
the drain valve for 60 seconds to drain the evaporator in its entirety. It will then rell with water and begin making
ice. If the ice making time is less than 30 minutes, the machine will start and begin making ice without draining the
evaporator.
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 17
Page 18
Wiring diagram, evaporator unit
Gearmotor data
Gearmotor current 2.8A @ 115 V
Gearmotor torque-out (high amp) trip point: 5.6A
18 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Resistance of windings
115 vac gearmotor (Bison):
White to Black: 3Ω
White to Red: –3Ω
Red to Black: 6Ω
Page 19
Single-phase condensing unit wiring diagram
FAN 1
FAN 2
POWER SUPPLY
230-60-1
COMPRESSOR
TERMINAL
GRD
L3
L2
L1
CRANK CASE
HEATER
S
T3
T2
T1
C
R
COMPRESSOR
CONTACTOR COIL
see note A
RECEIVER
HEATER
COMPRESSOR CONTACTOR
NC AUXILIARY SWITCH
BLACK
YELLOW
HPLP
HEATER
THERMOSTAT
COMPRESSOR
CONTACTOR
RED
TERMINAL
BOARD
FC
P1
L1
L2
T2
T1
L2
L1
L3
T3
L3T3T1F1F2
START
CAPACITOR
WITH BLEEDER
RESISTOR
BLACK
RED
YELLOW
POTENTIAL RELAY
see note B
4
5
6
1
2
RUN
CAPACITOR
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 19
Page 20
3-phase condensing unit wiring diagram
FAN 1
FAN 2
COMPRESSOR
CONTACTOR
POWER SUPPLY
230-60-3
COMPRESSOR
TERMINAL
COIL
see note A
L3
L2
L1T1
CRANK CASE
HEATER
S
GRD
T3
T2
C
R
HPLP
RECEIVER
HEATER
COMPRESSOR
CONTACTOR NC
AUXILIARY SWITCH
BLACK
RED
D.T.
HEATER
THERMOSTAT
TO "Y-OUT"
AT PHASE
MONITOR
TERMINAL
TERMINAL
BOARD
BOARD
A
P1
L1T2L2
T1
TO "230 VAC"
AT PHASE
B
MONITOR
TO "C"
C
AT PHASE
MONITOR
L2L3T3T1F1F2
L1
L3
T3
TO "P1"
AT TERMINAL
BOARD
Y
A
YOUT
ICM402
3 PHASE
MONITOR
L1
FFC
C
C
L2 L3
115
VAC
TO "L2"
AT TERMI
BOARD
TO "L1"
B
AT TERMINAL
BOARD
230
VAC
NAL
YELLOW
20 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 21
Mechanical System
Evaporator disassembly
1. Press CLEAN button to purge evaporator. Turn power
OFF when LO WATER lights.
2. Unscrew and disconnect transport tube from louvered
docking assembly.
3. Remove gearbox insulation..
Fig. 10
Fig. 11
4. Disconnect gear motor wires.
5. Remove screws (with 3/16" allen wrench) and auger
retaining fork:
Fig. 12
Fig. 13
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 21
Page 22
6. Remove gear motor bolts (1/2" wrench).
7. Remove gear motor and wipe auger shaft clean.
8. Remove main housing insulation and shuttle
insulation:
Fig. 14
WIPE
AUGER
SHAFT
Fig. 15
Fig. 16
9. Remove front feed water tube from push-in tting,
shuttle drain tube, and shuttle switch.
22 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 23
10. Remove 3 screws (with 3/16" allen wrench) then
remove auger and main housing together.
Note: Auger is sharp - wear protective gloves.:
11. Rotate auger to align opening in auger ange with
stream divider.
12. Pull out auger.:
Fig. 17
Fig. 18
Fig. 19
13. Remove and discard the ceramic mating ring and
shaft seal.
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 23
Page 24
Evaporator reassembly
14. Install ceramic mating ring and shaft seal.
Caution: Do not touch the sealed surface of either
part. Oil from bare skin will cause premature seal
failure.
15. Use liquid hand soap on the rubber part of the
ceramic seal when installing in main housing. Use
supplied cardboard disc to press into recess.
16. Apply liquid hand soap to raised area of auger
shaft and interior rubber portion of shaft seal before
installing seal.
1 7. Clean O ring groove. Lubricate O ring with petrol-gel
and reinstall.
18. Carefully install auger.
19. Rotate auger to position shown to clear main housing
stream divider.
Fig. 20
Cardboard
disc
Do NOT
touch!
Fig. 21
20. Install rear shuttle insulation (Fig. 22.1) and slide main housing (Fig. 22.2) onto auger.
2 1. When installing new water seal, use screwdriver to
compress the spring (Fig. 22.3), which allows for
easier installation of the three screws.
Fig. 22
1
2
3
24 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 25
22. Install shuttle switch.
§ Align holes with pins (Fig. 23.1) and depress switch
button (Fig. 23.2) to clear shuttle tab.
23. Install shuttle drain tube and front feed water tube
(Fig.24).
Fig. 23
Fig. 24
24. Install main housing insulation and shuttle insulation:
25. Apply a coat of petro gel to auger shaft.
Fig. 25
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 25
Page 26
26. Slide gear motor onto auger and Install gear motor
bolts (9/16" wrench).
2 7. Connect gear motor wires.
Fig. 26
Fig. 27
28. Pry auger forward and roate auger using 1/2" wrench
to align keyways.
29. Insert key fully.
30. Pry shaft forward to install retainer fork.
Fig. 28
Fig. 29
26 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 27
3 1. Rotate retainer fork to align screw holes.
32. Install screws to secure retainer fork.
33. Install gearbox insulation..
Fig. 30
Fig. 31
34. Connect transport tube to louvered docking assembly.
Fig. 32
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 27
Page 28
Reservoir/rear bushing disassembly
1. Press CLEAN button to purge
evaporator. Turn power OFF
when LO WATER lights.
Note: In many applications,
removing the gearmotor,
main housing, and
auger will allow for
the ice machine to be
pulled out further for
better access to rear
components.
2. Slide ice machine forward to
gain access.
3. Use Fig. 32 as disassembly
guide.
Note: Use petrogel when
installing/reinstalling
o-rings.
Fig. 33
28 HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W
Page 29
Refrigeration system
Condenser unit operation
The condensing unit is weatherproof and equipped to operate in ambient temperatures from –20 F to 120 F (–29C
to 48.9 C). The condensing unit is controlled by a low pressure control, which works in concert with a refrigerant
solenoid valve on the evaporator module. On start-up, the refrigerant solenoid valve opens and suction pressure
rises above the “on” set point of the control. The compressor and fan turn on and the refrigeration system operates.
Upon shut down, the refrigerant solenoid closes. The compressor will pump down the ice machine evaporator and
suction line until the low “off” set point is reached, at which point the compressor and fan will turn off.
Low ambient operation: Reliable operation at low outdoor ambient temperature is achieved with a pumpdown
cycle, a crankcase heater and a head pressure control valve. When the outdoor ambient falls, the condensing
pressure falls. This causes the discharge pressure to fall as well. When the discharge pressure falls below the dome
pressure, the valve modulates open to the discharge port which allows discharge gas to bypass the condenser.
Mixing the discharge gas with the liquid creates a high pressure at the condenser outlet, reducing the ow and
causing liquid to back up in the condenser. Flooding the condenser reduces the area available for condensing. This
reduction in effective condenser surface area results in a rise in condensing pressure. During summer conditions,
the discharge pressure is high, thus closing the discharge port of the valve. Hence, there is full liquid ow from the
condenser to the receiver.
A check valve is installed in the liquid line between the liquid receiver and the condenser to prevent liquid
migration from the receiver to the condenser during the off cycle. A second check valve is installed in the discharge
outlet of the motor compressor to prevent any oil from migrating onto the compressor head during an off cycle.
A low pressure control will start the condensing unit anytime the low side pressure rises above the C/I setting
of the control. The system contains a crankcase heater which is energized via the contactor of the compressor
during any off cycle. It is de-energized whenever the compressor is energized. This keeps the oil temperature
in the compressor sump warmer than any other wetted surface to prevent liquid migration from settling into the
compressor sump to prevent ooded compressor starts in extreme outdoor temperatures. The liquid receiver
also contains a heater which is controlled by a thermostat to be energized at temperatures below 60°F and
de-energized above 80°F. This is to maintain sufficient refrigerant pressure at extreme outdoor temperatures to
activate the pressure control.
All service on refrigeration systems must be performed in accordance with all federal, state and local laws. It is the
responsibility of the technician to ensure that these requirements are met. Recharging ice machine to other than
factory specications will void the warranty.
R404A ice machine charge specications
ModelLine RunCharge
1010/14100-100 ft (0-30.5 m)12.5 lbs (5.44 kg)
Refrigerant replacement requirements
1. Non-contaminated refrigerant removed from any Follett refrigeration system can be recycled and returned to
the same system after completing repairs. Recycled refrigerant must be stored in a clean, approved storage
container. If additional refrigerant is required, virgin or reclaimed refrigerant that meets ARI standard 700-88
must be used.
2. In the event of system contamination (for example, a compressor burn out, refrigerant leak, presence of
non-condensibles or moisture), the system must be repaired, evacuated and recharged using virgin or
reclaimed refrigerant that meets ARI standard 700-88.
3. Follett Corporation does not approve of recovered refrigerants. Improper refrigeration servicing procedures
will void the factory warranty.
Evacuation
Evacuate the system to a level of 500 microns. When the 500 micron level is reached, close all valves. Allow the
system to sit for approximately 20 minutes. During this period the system pressure should not rise. If the system
pressure rises and stabilizes there is moisture in the system and further evacuation is needed. If the pressure
continues to rise check the system for leaks.
AmbientsMinimumMaximum
1
Air temperature
Water temperature
1
Ambient air temperature is measured at the air-cooled condenser coil inlet.
2
Ambient water temperature is measured in the ice machine water reservoir.
50 F/10 C 100 F/37.8 C
2
45 F/7 C 90 F/32.2 C
Ice capacity test
Ice machine production capacity can only be determined by weighing ice produced in a specic time period.
1. Replace all panels on ice machine.
2. Run ice machine for at least 15 minutes.
3. Weigh and record weight of container used to catch ice.
4. Catch ice for 15 or 20 minutes.
5. Weigh harvested ice and record total weight.
6. Subtract weight of container from total weight.
7. Convert fractions of pounds to decimal equivalents (ex. 6 lbs 8oz = 6.5 lbs).
8. Calculate production using following formula:
1440 min. x wt. of ice produced
Total test time in minutes
Production capacity/24 hr.
=
9. Calculated amount per 24 hours should be checked against rated capacity for same ambient and water
temperatures in Ice Production Tables.
HCD1010A/W, HCD1010A/W, HCD1410A/W, HCD1410A/W 31
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Troubleshooting
Please see “Service” section for a description of each function.