Follett HCD700A User Manual

HCC700A, HCC700W,

HCD700A, HCD700W Ice Machines

Order parts online
www.follettice.com

Operation and Service Manual

Following installation, please forward this manual

to the appropriate operations person.

801 Church Lane • Easton, PA 18040, USA
Toll free [phone] • [phone]
www.follettice.com

00988170R00

2

Table of contents

Welcome to Follett Corporation
Speci cations
Operation

Cleaning
Weekly exterior care
Monthly condenser cleaning

Semi-annual evaporator cleaning

Service

Ice machine operation
Water system
Electrical system
Normal control board operation
Error faults
Hard error
Soft errors
Relay output indication
Compressor/refrigerant solenoid output
Wiring diagram
Compressor data
Gearmotor data
Resistance of windings
Mechanical system
Evaporator disassembly
Evaporator reassembly
Refrigeration system
Refrigeration pressure data
Refrigeration system diagram
Refrigerant charge size
Refrigerant replacement requirements
Evacuation
Ambients
Ice capacity test
Bin full detection system
Troubleshooting
Replacement parts

4
5
7
7
7
7

7
12
12
13
14
14
15
15
15
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15
16
17
17
17
18
18
21
25
25
25
26
26
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26
26
27
28
30

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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 [phone] 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 700
series.

Chewblet® Ice Machine Model Number Configurations

A V SC 700HC

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.

400 up to
454 lbs
(206kg)
700 up to
750 lbs
(340kg)
1000 up to
1036 lbs
(471kg)

1400 up to
1450 lbs
(658kg)
1650 up to
1580 lbs
(717kg)

A Air-cooled, self-contained
W Water-cooled,

R Air-cooled, remote

N Air-cooled, no condensing

connection to parallel rack

CondenserSeriesVoltageMachine

self-contained

condensing unit

unit for

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 be vented.

• Water supply must be treated by a scale-inhibiting  lter.

• 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

Speci cations

Electrical

Each ice machine requires its own separate circuit with electrical disconnect within 10 ft (6m).
Equipment ground required.
Standard electrical:
HCC700: 208-230/60/1 (6 ft (2m) NEMA 6-15 cord and plug provided)
HCD700: 115/60/1 (6 ft (2m) NEMA 5-15 cord and plug provided)
Maximum ice machine fuse – 15 amps each
Amperage – 115V: 10A, 220V: 5A

Plumbing

3/8" OD push-in water inlet
3/4" MPT drain
1/4" FPT condenser inlet (water-cooled condenser only)
1/4" FPT condenser drain (water-cooled condenser only)

Notes: 3/4" vented drain line must slope a minimum of 1/4" per foot (6mm per 30.4cm run).
Drain to be hard piped and insulated.
To prevent back  ow, do not connect drains.
Separate drains for ice machine and condenser.
Water shut-off recommended within 10 feet (3m).
Water supply must be treated by a scale-inhibiting  lter (Follett item# 00130286).

Ambient

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 – potable 70 psi max. (483 kPa) 10 psi min. (89 kPa)

Note: Water-cooled condenser pressure 150 psi (1034 kPa)

Heat rejection

Air-cooled rejects 8850 BTU/hr
Water-cooled rejects 10150 BTU/hr

Ice production

Note: Water regulating valve set to maintain a 215 PSIG (95°F Saturated R404A) discharge pressure at all

conditions.

Air-cooled ice machine capacity/24 hrs.

Ambient Air Temperature F/C

60

70

80

90

F

16

C

740

50

336

10

714

60

324

16

651

70

295

21

649

80

294

27

Inlet Water Temperature F/C

600

90

272

32

21
675
306
673
305
643
292
609
276
583
264

27
644
292
618
280
589
267
561
254
519
235

32
586
266
559
254

525
238

506
230
499
226

100

38
565
256
529
240
512
232
478
217
441
200

lbs
kg
lbs
kg
lbs
kg
lbs
kg
lbs
kg

Water-cooled ice machine capacity/24 hrs.

Ambient Air Temperature F/C

60

70

80

F

16

C

672

50

305

10

600

60

272

16

544

70

247

21

521

80

236

27

506

90

230

32

Potable Make-up Water Temperature F/C

21
665
302
597
271
541
245
515
234
504
229

27
660
299
584
265
539
244
506
230
501
227

90

32
656
298
582
264

535
243

504
229
500
227

lbs
kg
lbs
kg
lbs
kg
lbs
kg
lbs
kg

5

Dimensions and clearances

AIR EXHAUST

ICE TRANSPORT HOSE CONNECTION

1/4" FPT CONDENSER
(WATER COOLED ONLY)

3/4" MPT DRAIN

3/8"OD PUSH-IN WATER INLET

21.25"
(54 cm)

22.44" (57 cm) 1.75 MIN.

22.46" (57 cm)

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 160 sq in (1032 sq cm) of open area.

Air-cooled model HCC700A ice machines – 18" (458mm) minimum clearance between discharge and air
intake-grilles.

6

Operation

LO WATER

Cleaning 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.

Monthly condenser cleaning (air-cooled icemaker only)

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™ Cleaner (part #00132001) and NU-CALGON IMS-II SANITIZER.

• Do not mix Cleaner and Sanitizer solutions together.

• 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

10minutes before putting ice machine back into service.

1. To clean – Remove cover. Press the CLEAN button.
The machine will drain. Wait for the LO WATER light
to come on (Fig. 1).

Fig. 1

77

2. Mix 1 gallon (3.8L) 120 F (49 C) water and

15

LO WATER

7 ounces (198g) (one 7 ounce packet of Follett
SafeCLEAN ice machine cleaner, part# 00132001).
Locate cleaning cup. Fill until CLEANER FULL light
comes on (Fig. 2).
Note: Do not use bleach to sanitize or clean the
icemaker.

Fig. 2

CLEANER FULL

3. Replace cover on cleaning cup. Wait until machine
restarts. Machine will clean, then  ush 3 times in
approximately 15 minutes (Fig. 3).

4. To sanitize – Press CLEAN button. The machine
will drain. Wait for LO WATER light to come on
(Fig. 4).

Fig. 3

Fig. 4

88

CLEANER FULL

15

5. Mix 1 gallon 120 F (49 C) water and 1.6 ounces
(48ml) NU-CALGON IMS-II SANITIZER. Fill until
CLEANER FULL light comes on (Fig. 5).

™

Place one Sani-Sponge

in remaining sanitizing
solution and retain for Step 9.
Note: Do not use bleach to sanitize or clean the

icemaker.

Fig. 5

6. Replace cover on cleaning cup. Wait until machine
restarts. Machine will sanitize, then  ush 3 times in
approximately 15 minutes (Fig. 6).

7. Disconnect coupling as shown (Fig. 7).
Note: Steps 8-11 must be completed before

machine  ushes and starts producing ice.

Fig. 6

Fig. 7

99

1

2

3

16"

(407mm)

8. Using disposable food service grade gloves, insert
dry Sani-Sponge
insert Sani-Sponge soaked in Nu-Calgon IMS-II
sanitizer solution (from Step 5). Push both Sani­Sponges down ice transport tube with supplied
pusher tube(Fig.8).

™

(kit part# 00132068). Next,

Fig. 8

9. Remove and discard 16" (407mm) pusher tube
(Fig. 9).

10. Reconnect coupling. When sanitizing cycle ends,
machine will start producing ice. Press power
switch ON. Ice pushes Sani-Sponges through tube
(Fig. 10).

Fig. 9

Fig. 10

1010

11. Place a sanitary (2 gallon or larger) container in
bin or dispenser to collect Sani-Sponges and ice
for 10 minutes. Collect 5.5 lbs (3kg) of ice from unit.
Discard ice and Sani-Sponges (Fig. 11).

Fig. 11

1111

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 (13 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

12

Water system

The water level in the evaporator is controlled by a feed solenoid and level detecting sensors. Referencing the
diagram below, water sensing rods extend down into the reservoir at the end of the evaporator assembly. The
system works via electrical conductivity as follows:

One of the longest probes is a 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 sensors. As water is consumed to make ice, the level will fall until the Normal Low sensor
is exposed, triggering the water feed solenoid on. Water will  ll until the Normal High sensor is activated.

Note: The potable water dissolved solids content must be greater than 10 ppm for the water control system to

function properly. If using reverse osmosis water  ltration system, ensure T.D.S level is greater than 10
ppm.

Water system diagram

Water level diagram

NORMAL

OPERATING

RANGE

13

NORMAL LO

COMMON

NORMAL HI

ALARM LO

Electrical system

FLASHINGON or OFF

Legend:

OFFON

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 disposition Operating conditions

1. Ice machine is making ice.

MAKING ICE

NOT USED

MAINT/CLEAN

TIME DELAY

LOW WATER

SERVICE

HI AMPS

HI PRESS

DRAIN CLOG

CLEANER FULL

.

2. Ice machine is not making ice.

LOW BIN

MAKING ICE

NOT USED

MAINT/CLEAN

TIME DELAY

LOW WATER

SERVICE

HI AMPS

HI PRESS

DRAIN CLOG

CLEANER FULL

DIP Switch Settings

OFF ON

Capacitive touch

NOT USED

No filtration

NOT USED

NOT USED

30 minute time delay

Flush disabled

Maintenance timer ON

12345678

POWER ON

LOW BIN

POWER ON

Sensor safe

NOT USED

Filtration message

NOT USED

NOT USED

60 minute time delay

Flush enabled

Maintenance timer OFF

1. Normal running.

2. Normal time delay. When the bin  lls with ice, the LOW
BIN light goes out 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.

Note: The ice machine has a 15-minute startup delay

when power is applied to prevent circuit overload.

14