Follett 12CI425A Service Manual

Name: Follett 12CI425A
Brand: Follett
SKU: 5255434
Rating: 4 (1 reviews)

4 (1)

Symphony Plus™ 12 Series

Ice and Water Dispensers

Operation and Service Manual

12CI425A-LI	12CI425A-SI countertop, ice-only
countertop, ice-only	dispenser with SensorSAFE™
dispenser	infrared dispensing

12CI425A-L	12CI425A-S	12HI425A-S
countertop dispenser	countertop dispenser with	wall mount dispenser
	SensorSAFE infrared dispensing	(available with or without
	(shown with legs accessory)	drain pan)

Following installation, please forward this manual to the appropriate operations person.

801 Church Lane • Easton, PA 18040, USA
Toll free (877) 612-5086 • +1 (610) 252-7301
www.follettice.com	01033653R02

Contents

Welcome to Follett. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 3
Before you begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Plumbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Ventilation clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Dry weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
Before you begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
Installing countertop dispensers without legs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
Installing countertop dispensers with legs accessory (P/N AF10LBLEGS). . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
Installing wall mount dispensers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
User information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
How the dispenser works.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
Panel removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12

Cleaning/descaling and sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Weekly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Monthly.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
Semi-Annually (more often if conditions dictate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 14
Ice Machine and Dispenser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
Ice machine operation (all models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
The icemaking process....................................................................	16
Water system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
Electrical system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
Wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
Wiring diagram - Lever only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	22
Wiring diagram - SensorSAFE only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	23
Ice machine operational and diagnostic sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	24
Diagnostic stages.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	29
Refrigeration pressure data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
Compressor data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
Refrigeration system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
Dispenser troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 35
Lever model troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	35
SensorSAFE model troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	35
Disassembly and replacement instructions. . . . . . . . . . . . . . . . . . . . . . . . . .	36
Fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
Thermostat and ice transport tube replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	41
Replacement parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	42
Dispenser exterior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	42
Wheelmotor and drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	43
Dispense chute and splash panel (models with lever dispensing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	44
Dispense chute and splash panel (models with SensorSAFE infrared dispensing). . . . . . . . . . . . . . . . . . . . . .	45
Ice machine components.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	46
Electrical components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	48
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	49
Evaporator replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	50
Water supply and drains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	52
Water treatment accessories for Symphony Plus ice and water dispensers . . . . . . . . . . . . .	53

2 12CI425A • 12HI425A

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 that same degree of service, we ask that you take

a moment to review the installation portion of this manual before beginning to install the unit.. Our installation instructions are designed to help you achieve a trouble-free installation.. Should you have any questions or require technical help at any point, please call our technical service group at (877) 612-5086 or

(610) 252-7301..

Note: To expedite assistance, all correspondence or communication MUST include the model number, serial number and complete and detailed explanation of the problem..

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 filing 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 ice dispensing equipment.. Following is an explanation of the different model numbers..

12CI425A-LI

I = ice-only; no water

Dispense actuation, L = lever, S = SensorSAFE

Condenser type, A = air-cooled

Ice machine capacity in lbs per day

Ice machine location, I = integral

Dispenser configuration, C = countertop, H = wall mount

Approximate storage capacity in lbs

CAUTION!

§§ Do not tilt any unit further than 30° off vertical during uncrating or installation..

§§ Dispenser bin area contains mechanical, moving parts.. Keep hands and arms clear of this area at all times.. If access to this area is required, power to unit must be disconnected first..

§§ Follett recommends a Follett water filter system be installed in the ice machine inlet water line (standard capacity #00130229, high capacity #00978957, carbonless high capacity #01050442)..

§§ Prior to operation, sanitize the dispenser in accordance with instructions found in this manual.. §§ Ice is slippery.. Be sure counters and floors around dispenser are clean, dry and free of ice..

§§ Do not block right side air intake or top air exhaust..

12CI425A • 12HI425A

Specifications

16.00"

(40.7 cm)

Front View

	22.625"
	(57.5 cm)
			air exhaust
		32.00"
		(82.6 cm)
			3/4" MPT drain
			3/8" FPT
		air	water inlet
		intake
4.00"	18.00"
(10.2 cm)	(45.8 cm)	power cord (NEMA 5-15)
	23.5"
	(59.7 cm)

Side View

Rear View

Electrical

§§ 115 V, 60 Hz, 1 phase, 11..0A

§§ Connect to a 15A dedicated circuit..

Ambient

Air temp*	100 F/38 C Max..		50	F/10 C Min.. Best performance below 80 F (27 C)

Water temp†	90	F/32 C Max..	45	F/4 C Min.. Best performance below 70 F (21 C)
Water pressure	70	P..S..I../5Bar Max..	10 P..S..I../0..7 Bar Min..

* Ambient air temperature is measured at the air-cooled condenser coil inlet..
† Ambient water temperature is measured in the ice machine reservoir..

Plumbing

	12CI425A	12HI425A

Dispenser drain	3/4" MPT	3/4" MPT
Water inlet	3/8" FNPT	3/8" FNPT

Note: Water shut-off recommended within 10 ft.. (3 m) of dispenser.. Drain to be hard-piped and insulated.. Maintain at least 1/4" per foot (20 mm per 1 m) run of slope..

Ventilation clearances

§§ 6" (15..3 cm) on right side of dispenser, 6" (15..3 cm) at top for ventilation and 12" (30..5 cm) at top recommended for service..

Note: Do not block right side air intake or top air exhaust..

Dry weight

§§ 175 lb (79..4 kg)

4 12CI425A • 12HI425A

Installation

Before you begin

§§ All dispensers must be installed level in both directions to ensure proper operation..

§§ Service and ventilation clearances: 6" (15..3 cm) on right side of dispenser, 6" (15..3 cm) at top for ventilation and 12" (30..5 cm) at top recommended for service..

§§ Countertop units installed without legs provide the option of taking utilities out bottom or back of dispenser (on wall mount units and countertop units with legs, utilities exit from back).. See counter cutout drawings for bottom exiting utilities on units with and without drain pans.. For installations where utilities exit through back of dispenser, refer to back view drawings..

§§ Wall mount models without drain pan are designed for use above sinks..

§§ Counter depth must allow front of sink to be a minimum of 30..00" (76..2 cm) from wall..

Installing countertop dispensers without legs

1.Position dispenser in desired location, mark dispenser outline on counter and remove dispenser..

2.Regardless of whether utilities will exit through back or bottom of dispenser, drill four (4) 7/16" holes in counter to anchor dispenser to counter (Fig. 1)..

3.For utilities exiting through bottom only:

(a)Make cut out as shown in

Fig. 1.

(b)Move drain fitting from back of dispenser and mount where shown in Fig. 2..

(c)Cut drain tube to length and attach to barbed connection..

(d)Move inlet water fitting from back of dispenser and mount where shown in Fig. 2..

(e)Cut water tubing to length and re-insert into water fitting..

4.For all units: Apply a thick bead approximately 1/4" (6 mm) diameter of NSF-listed silicone sealant (Dow Corning RTV-732* or equivalent) 1/4" (6 mm) inside marked outline of dispenser..

5.Carefully lower dispenser on counter in proper position and secure to counter with four (4) 3/8"-16UNC bolts..

6.Smooth excess sealant around outside of dispenser..

Fig. 1

	16.00"
	(40.7 cm)
4X	14.37"	0.81"
Ø.437"	(36.5 cm)	(2.1 cm)
(11 mm)	1.50"	1.04"
hole	1.50"	1.04"
hole	(3.8 cm)	(2.6 cm)
	(3.8 cm)	(2.6 cm)
		2.00"
	Cutout	(5.1 cm)	17.87"
12.00"	Cutout		17.87"
12.00"	connections		(45.4 cm)
(30.5 cm)	through	16.00"
	bottom	16.00"
		(40.7 cm)
12.00"
(30.5 cm)
			5.62"
		(14.3 cm)

Fig. 2 - Bottom exiting utilities (countertop units)

bracket
drain tube	drain
	tting
	inlet
	tting

* Dow Corning is a registered trademark of Dow Corning Corporation in the United States and other countries..

12CI425A • 12HI425A

Installing countertop dispensers with legs accessory (P/N AF10LBLEGS)

CAUTION!

§§ Do not tilt any unit further than 30° off vertical plane..

§§ Countertop dispensers that sit on legs (not bolted to counter) can be inadvertently moved.. Care should be taken when operating and cleaning to avoid accidents..

1.	Carefully tip dispenser back to expose	Fig. 3 - Bottom panel and leg assembly
	underside and block up in place..
2.	Screw legs (shipped taped to drain pan of
	dispenser) into dispenser bottom, taking
	care to seat legs securely against underside
	of dispenser..
3.	Attach bottom panel and hardware to bottom
	of dispenser with supplied screws (Fig. 3)..
4.	Position unit in desired location and adjust
	legs to level in both directions..
5.	Make final connections..

bottom panel

leg screw

Installing wall mount dispensers

CAUTION!

§§ WALL PREPARATION: Wall and fasteners must be of sufficient strength to carry weight of unit (185 lb (83..9 kg).. Hardware for this is not included..

6 12CI425A • 12HI425A

Notes:

§§ SensorSAFE infrared dispensing is standard..

1.Recommended minimum counter depth and mounting height shown on Fig. 6 ensures that ice will drop into sink..

2.See Fig. 6 for model dimensions.. The dimensions include the 0..5" (13 mm) mounting bracket supplied with the unit..

3.Cut utility hole in wall as shown (Fig. 5)..

4.Mount support bracket to wall using fasteners of sufficient strength (fasteners not included, see Fig. 4)..

5.Rough in water and drain lines (3/4" copper recommended for drain) (Fig. 9)..

6.Lift dispenser onto support bracket, positioning unit so that hook on back of dispenser is captured by support bracket angle (Fig. 6)..

7.Install two (2) supplied 3/8"-16UNC screws through bottom of support bracket into bottom of dispenser (Fig. 4).. Slotted holes in support bracket allow you to adjust and level the dispenser.. Ensure that the top of dispenser is level or tilted slightly back toward the wall..

8.Remove bottom cover and make final connections (Fig. 7)..

9.Attach bottom panel and hardware to bottom of dispenser (Fig. 8)..

10.Sanitize dispenser prior to use..

12CI425A • 12HI425A

Fig. 4 – Wall mount bracket and fastener requirements

wall mounting bracket

support bracket

screw

= Customer supplied.

812CI425A • 12HI425A

Fig. 5 – Wall-mount dimensions
	FRONT VIEW
	16.00" TYP.
WALL STUDS	(40.6 cm)
WALL STUDS
ANCHOR POINTS
0.438" (11 mm)
CLEARANCE
WALL MOUNT	13.00" (33.0 cm)
BRACKET	13.00" (33.0 cm)
BRACKET	15.08"	(38.3 cm)
	15.08"	(38.3 cm)
13.50" (34.3 cm)
2.88" (7.3 cm)	8.08" (20.5 cm)
2.88" (7.3 cm)	1.08" (2.7 cm)
	1.08" (2.7 cm)
	WALL CUTOUT

Fig. 6 – Wall mount side view

23.70"

(60.2 cm)

32.00" (81.3 cm)

18.51" (47.0 cm)

20.53" (52.2 cm)

30.00" (76.2 cm)

MIN DISTANCE TO SINK FRONT

SUGGESTED POWER

CORD ROUTING

CAUTION!

§§ Do not rest dispenser weight on bottom of support bracket.. Dispenser weight to rest on top of the support bracket

(Fig. 6)..

12CI425A • 12HI425A

Fig. 7 – Wall mount unit bottom panel assembly

BOTTOM VIEW

3/4” MNPT

Drain

3/8” FNPT

Water

Fig. 9 – Wall mount, utility location

Fig. 8 – Wall mount unit bottom panel assembly

	nut
	support
	bracket
bottom panel	screw
bottom panel

	FRONT VIEW	water and
		water and
		drain tubing
WALL MOUNT
BRACKET
WALL		WALL
CUTOUT
1.41" (3.6 cm)	1.72" (4.4 cm)
3.70" (9.4 cm)	0.92" (23 mm)	3.00"
POTABLE WATER SUPPLY	0.92" (23 mm)	3.00"
POTABLE WATER SUPPLY		(7.7 m)
3/8 COPPER TUBE		(7.7 m)
3/8 COPPER TUBE		MAX.
		MAX.
7.88" (20.0 cm)		SIDE VIEW UTILITIES EXITING WALL
DRAIN	11.75" (29.9 cm)
3/4 COPPER TUBE	POWER CORD EXIT

10 12CI425A • 12HI425A

User information

How the dispenser works

Follett’s 12 series automatic-load ice and water dispensers are equipped with Follett’s 425 lb (193 kg)/day ice machine.. In the continuous icemaking process, water freezes to the inside wall of the evaporator.. A rotating stainless steel auger carries the ice to the top of the evaporator where it is compressed and extruded through an outlet port.. The ice is then pushed through a tube to the storage hopper.. When the hopper is full, a bin thermostat opens and shuts the ice machine off.. When the dispense mechanism is activated, a dispense motor is turned on, causing the wheel to turn.. This moves ice to the dispense chute where it drops by gravity into the container held below the chute..

How SensorSAFE infrared dispensing works

Follett’s SensorSAFE infrared dispensing maximizes sanitation and minimizes the possibility of cross-contamination by eliminating physical contact between the cup or container and dispenser.. Sensors in the panel use reflected infrared light to detect the presence of the container and send a signal to a control board which then activates the appropriate components for ice or water dispensing..

The SensorSAFE infrared dispensing package includes a cleaning switch under the left side of the front cover which temporarily shuts off dispensing to allow cleaning of the panel and lenses.. If the switch is not turned back on after cleaning, the dispenser automatically resets after two minutes for normal operation..

SensorSAFE infrared dispensing also includes a time limit safety feature which automatically stops ice dispensing after one minute of continuous dispensing.. Dispensing can be resumed by moving the container away from the dispenser and returning it to the activation zone..

12CI425A • 12HI425A

Panel removal

Fig. 10

Top cover: Lift cover up and off Velcro strips..

Fig. 12

Splash panel: Remove 4 screws.. Pull out bottom of panel to allow top to slide out from under hopper support lip..

Fig. 11

Front cover: Pull bottom of cover, then lift cover up and forward to unhook from keyhole slots..

Fig. 13

Side panels: Remove screw located on lower rear side.. Pull side panel toward front of unit and out of

back panel.. Note: Before removing right hand side, remove side louver panel by lifting up and pulling forward on panel..

12 12CI425A • 12HI425A

Cleaning/descaling and sanitizing

Follett ice machines and dispensers, and their associated cleaning and sanitizing procedures, are designed for use with potable water sources.. The presence, or suspected presence, of infectious agents may call for additional measures, including the replacement of components and more comprehensive disinfection measures.. Follett recommends that these cleaning and sanitizing procedures be reviewed with the appropriate infectious agent subject matter experts to assure complete remediation..

Periodic cleaning/descaling and sanitizing of Follett’s ice and water dispenser and ice machine 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..

Follett recommends sanitizing the pressurized water lines prior to cleaning/descaling and sanitizing the ice machine/dispenser.. Follett offers two kits: order P/N 01089572 when a Follett filter system with a pre-filter bowl is present, or P/N 01089580 when a Follett filter system is not present.. Follow the instructions provided with the

respective kits to sanitize the pressurized water lines immediately before cleaning/descaling and sanitizing the ice machine/dispenser..

Cleaning of the condenser can usually be performed by facility personnel.. Cleaning/descaling and sanitizing of the ice machine system should be performed by your facility’s trained 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..

Recommended cleaning/descaling and sanitizing intervals*

Symphony Plus	Frequency
Drain Line	weekly

Drain Pan/Drip Pan	weekly

Exterior	as needed

Condenser	monthly (air-cooled only)
Dispenser and Components	semi-annually

Ice Machine	semi-annually

Transport Tube	semi-annually

Ice Storage Area/Bin	semi-annually
Pressurized Water Sanitizing	semi-annually

* Ice machine and dispenser must be cleaned and sanitized prior to start-up..

Weekly

CAUTION!

§§ Do not use solvents, abrasive cleaners, metal scrapers or sharp objects to clean any part of the dispenser..

Dispenser drain pan and drain line

§§ Pour 1 gal.. (3..8 L) of hot tap water into drain pan to flush drains..

Splash panel front, SensorSAFE infrared dispensing

1.Deactivate dispensing by pressing and releasing clean switch located on left side of unit under top front cover..

2.Clean lens and splash panel front using a soft cloth and mild, non-abrasive, non-chlorine based cleaner..

3.Reactivate dispensing by pressing and releasing clean switch again..

12CI425A • 12HI425A

Monthly

CAUTION!

§§ Do not use solvents, abrasive cleaners, metal scrapers or sharp objects to clean any part of the dispenser..

Condenser (air-cooled ice machine only)

1.Use a vacuum cleaner or stiff brush to carefully clean condenser coils of lint and debris to ensure optimal performance..

Semi-Annually (more often if conditions dictate)

§§ A cleaning/descaling and sanitizing procedure should always include both the ice machine and dispenser.. §§ Icemaking system can be cleaned/descaled in place..

CAUTION!

§§ Wear rubber gloves and safety goggles (or face shield) when handling cleaner or sanitizer mixtures.. §§ Use only Follett approved cleaners..

§§ It is a violation of Federal law to use Cleaning or Sanitizing solutions in a manner inconsistent with their labeling.. §§ Do not use solvents, abrasive cleaners, metal scrapers or sharp objects to clean any part of the dispenser..

Cleaning Solution: Mix cleaning solution of 1 gal.. (3..8 L) 100 F (38 C) water and 7 oz (198 g) (one 7 oz packet) of Follett SafeCLEAN ice machine cleaner/descaler (P/N 00132001)..

Sanitizing Solution:Mix a sanitizing solution of 1 gal.. (3..8 L) 100 F (38 C) water and 1..6 oz (47 ml) Nu-Calgon IMS-II or IMS-III Sanitizer (P/N 00979674)..

Cleaning & sanitizing tool checklist

§§ (2) 1..5 Gallon (or larger) Plastic Buckets §§ (2) clean cloths

§§ Sanitary gloves §§ Safety glasses

§§ (2) Sani-Sponge™ (P/N 00131524 - single sponge)

§§ (1 ) Packet of SafeCLEAN™ (P/N 00132001 - 24 packets)

§§ 1..6 fl oz of Nu-Calgon IMS-II or IMS-III Sanitizer (P/N 00979674 - 16 fl.. oz bottle)

Ice Machine and Dispenser

Cleaning/descaling procedure

Note: Check drains and drain cup to ensure they are open and flowing freely..

1.If ice machine was running recently, ensure that the evaporator is completely free of ice before proceeding.. If there is ice in the evaporator, complete steps 2-7 using only hot water to remove the ice then begin Cleaning/Descaling Procedure again..

2.Remove front cover and turn OFF bin signal switch..

3.Dispense all ice from storage hopper and discard..

4.Remove top of machine and hopper lid..

5.Press CLEAN switch.. The MAINTENANCE light will turn on and the machine will drain.. Wait for the LOW WATER light to turn on..

6.Remove lid from cleaning cup and fill (about 1 quart) until cleaning solution overflows from the ice transport tube into the hopper.. Place lid back on cup.. Save remainder of cleaning solution..

7.CLEANER FULL light will turn on and machine will start cleaning cycle then rinse three times; this process takes approximately 15 minutes..

14 12CI425A • 12HI425A

8.While ice machine is cleaning/descaling, clean dispenser as follows:

a.Remove center thumbscrew, locking plate, two wingnuts and backing plate from front of storage hopper..

b.Remove stud assembly, baffle, wheel, and any remaining ice..

c.Remove dispense chutes from splash panel..

d.Submerse drain grille in cleaning solution and allow to soak to remove any scale buildup..

e.Wipe stud assembly, baffle, wheel, inside of storage area, dispense chutes, drain grille and drain pan with damp cloth wrung out in cleaning solution.. Thoroughly rinse all parts with damp cloth wrung out with clean water..

Note: To avoid possible damage to motor assembly, only use a damp cloth to clean storage hopper.. Do not allow water to run through motor shaft hole in bottom of hopper..

9.When machine is finished cleaning, the MAINTENANCE light will turn off..

Sanitizing procedure

10.Press CLEAN switch.. The MAINTENANCE light and LOW WATER light will turn on..

11.Fill cleaning cup with sanitizing solution until it overflows from the ice transport tube into the hopper.. Place lid back on cup.. Save remainder of sanitizing solution..

12.CLEANER FULL light will turn on and machine will start sanitizing cycle then rinse three times; this process takes approximately 15 minutes..

13.While ice machine is sanitizing, sanitize dispenser as follows:

a.Wipe inside of hopper lid, stud assembly, baffle, wheel, inside of storage area, dispense chutes, drain grille and drain pan with damp cloth wrung out in sanitizing solution..

Note: To avoid possible damage to motor assembly, only use a damp cloth to clean storage hopper.. Do not allow water to run through motor shaft hole in bottom of hopper..

b.Reinstall dispense chutes, wheel, baffle, stud assembly, backing plate, two wing nuts, locking plate, and thumbscrew.. (See manual for correct baffle position..)

14.When machine is finished rinsing, the MAINTENANCE light will turn off.. Remove top bearing insulation and compression nozzle insulation.. Loosen Phillips-head screw on nozzle connected to evaporator.. Remove nozzle from evaporator side only, leave other side of nozzle connected to transport tube..

15.Place one Sani-Sponge in remaining sanitizing solution..

16.Insert the sponge soaked in sanitizing solution into nozzle then insert a dry sponge into the nozzle..

17.Replace nozzle onto evaporator and tighten screw.. Ensure drain is connected to reservoir and vent tubes are connected to evaporator drain pan..

18.Turn ON bin signal switch.. Wait for ice to push sponges through transport tube..

19.Collect sponges from ice storage bin..

20.Replace hopper lid, machine top, and install front cover..

21.After 10 minutes, dispense all ice and discard..

12CI425A • 12HI425A

Service

Ice machine operation (all models)

Follett’s ice machine consists of four distinct functional systems:

§§ Harvesting system §§ Water system

§§ Electrical control system §§ Refrigeration system

These four systems work together to accomplish the production and harvesting of ice.. A problem in any one of these systems will result in improper operation of the entire ice production cycle.. When troubleshooting the ice machine, it is important to analyze the entire system operation to determine which system is not functioning properly, then pinpoint the component within that system that is malfunctioning.. Determine what corrective action must be taken before making any adjustments or replacing any components..

The icemaking process

The Maestro Plus ice machine uses a stainless steel jacketed evaporator and operates on a continuous freezing cycle.. Water is supplied to the evaporator from the water reservoir where the water level is controlled by conductivity probes..

When the ice machine is running, a layer of ice forms on the interior surface of the evaporator.. This ice is continuously removed by a slowly rotating (12 RPM) auger.. The auger carries the ice upward into the cavity formed by the top bearing housing and the compression loop, where it is compressed to remove excess water.. When the ice reaches the desired hardness it rotates within the cavity and is forced through a discharge port and compression nozzle and into the ice transport tube.. The discharge tube and compression nozzle are slightly restricted to further compress the ice and produce the desired hardness..

A solid state control board located in the electrical box of the ice machine controls the normal operation of the ice machine and monitors gearmotor torque.. This control board will shut down the ice machine should an over-torque condition occur.. It is very important that you familiarize yourself with the operational sequences detailed in this manual before attempting to service the ice machine..

	EVAPORATOR
	PORT
	ICE TRANSPORT TUBE
	COMPRESSION NOZZLE
	AUGER
	WATER
	INLET
16	12CI425A • 12HI425A

Water system

The water level in the evaporator is controlled by a fill solenoid (Fig. 14) and level detecting sensors.. Water sensing rods (Fig. 15) 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 fill 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 filtration system, ensure T..D..S level is greater than 10 ppm..

Fig. 14 – Water system diagram

VENT