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Scotsman Ice Machine
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C2648
Parts List
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Service Manual
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Scotsman Ice Machine C2648 Service Manual

C2648 Service Manual
Introduction
The design of this modular remote cuber is the result of years of experience with remote ice machine refrigeration systems. Standard features of this product include front accessible on-off switches, always-visible indicator lights, mechanical assist ice harvest for extra efficiency, automatically adjusting water purge and a control system that optimizes system operation.
The manual includes installation information, technical details, diagnostics and service parts.
Note the Caution and Warning symbols when they appear on the product or in this manual. They indicate potential hazards. Keep this manual for future reference.
Installation Table of Contents
Installation: Product Specifications .................................Page 2
Model Number Description .....................................Page 3
Electrical and Refrigeration Requirements ............................. Page 4
Condenser and Ice Machine Layouts ................................Page 5
Water ................................................Page 6
Panel Removal ...........................................Page 7
Remote Condenser Location ....................................Page 8
For The Installer: Remote Condenser ...............................Page 9
Precharged Line Routing ......................................Page 10
Coupling Instructions ........................................Page 11
Plumbing Requirements .......................................Page 12
Electrical ...............................................Page 13
Final Check List: ..........................................Page 14
Initial Start Up ............................................Page 15
Adjustments .............................................Page 16
Use and Operation .........................................Page 17
Switch Panel Area ..........................................Page 18
Options and Other Information ...................................Page 19
Cleaning, Sanitation and Maintenance ...............................Page 20
Remote condenser and other maintenance ............................Page 22
Prodigy Cuber System Information .................................Page 23
Page 1
C2648 Service Manual - Installation
Installation: Product Specifications
Location Limitations
This ice system is made up of three parts, the ice making machine, or head; the remote condenser; and the interconnecting tubing. The ice making machine must be installed indoors, in a controlled environment. Space must be provided near the machine for service access. The remote condenser may be installed above or below the ice machine, per the limits stated later in this manual. The remote condenser may be installed outdoors within the temperature limits listed below. The interconnecting tubing must be installed per the directions stated in this manual, and the amount of tubing exposed to uncontrolled temperatures must be minimized.
Space Limitations
Although the machine will function with no clearance to the top and sides, some space must be allowed for service access. Building the machine in with no access will cause higher service cost, in many cases this extra cost may not be covered by warranty.
Remote condenser
Minimum Maximum
o
Air temperature -20
F. 120oF.
Power Supply
Minimum Maximum
208-230 volt
198 volts 253 volts
model
Warranty Information
The warranty statement for this product is provided separately from this manual. Refer to it for applicable coverage. In general warranty covers defects in material and workmanship. It does not cover maintenance, corrections to installations, or situations when the ice machine is operated in circumstances that exceed the limitations printed above.
Product Information
Environmental Limitations, ice machine:
Minimum Maximum
Air temperature 50
Water
o
F. 100oF.
o
40
F. 100oF.
temperature
Water pressure 20 psi 80 psi
Note: While the ice machine will operate under the listed conditions, ice making capacity will be reduced with increases in water supply temperature and/or air temperatures at the condenser. Bin meltage will also increase with any increase in room temperature.
The machine is a specialized version of a modular cuber. A modular cuber does not include any ice storage, it is designed to be placed onto an ice storage bin. Many installations only require the matching bin, but some may need an adapter to be placed between the ice machine and the bin. Additionally, the machine must be connected to the correct remote condenser and use the correct pre-charged tubing. The machine is supplied with a full refrigerant charge, field charging is not required.
This product cannot be stacked.
Page 2
C2648 Service Manual - Installation
Model Number Description
Example
C2648SR-3A
•
C=cuber
•
24=nominal capacity in 100s of pounds
•
48=nominal width of cabinet in inches
•
S=cube size, S=small or half dice, M=medium
•
or full dice R=condenser type. R=Remote
•
-3=Electrical code. = 208-230/60/3
•
A=series revision code. A=first series.
•
Note: In some areas of this manual model numbers may include only the first five characters of the model number, meaning that cube size, condenser type and voltage differences are not critical to the information listed there.
Options:
There are several options available for field installation. They include:
•
Vari-Smartä Adjustable ice level system
•
Smart-Boardä Advanced feature control
Some installations require bin or dispenser adapters. See the table below.
Standard bin applications – Adapter information
Model BH1100, BH1300 or BH1600
C2648 Adapter panels included with bin, no
adapter needed
Other bins and applications:
Take note of the depth of the machine. Slope front bins may not be deep enough to allow the bin door to rest open against the machine. Upright bins are
recommended.
Note the drop zone and optional ultrasonic sensor locations in the illustrations. Drop zone hole must
be 20.25" deep.
Scotsman ice systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of UL and NSF.
Scotsman assumes no liability of responsibility of any kind for products manufactured by Scotsman that have been altered in any way, including the use of any part and/or other components not specifically approved by Scotsman.
Scotsman reserves the right to make design changes and/or improvements at any time. Specifications and design are subject to change without notice.
Page 3
C2648 Service Manual - Installation
Electrical and Refrigeration Requirements
Ice Machine Dimensions
w”xd”xh”
48 x 28 x 31 C2648SR-3 208-230/60/3 PRC241-32A 21.6 30 30
same C2848MR-3 208-230/60/3 PRC241-32A 21.6 30 30
Remote Condenser Footprint: On center mounting hole spread: 27.57" w x 33.38" d. See page 5.
Minimum bin top opening: 20.5" x 40.5" includes drop zones and ultrasonic sensor location. See page 5.
*Or HACR circuit breakers.
Table notes: Series revision code omitted. All the listed condensers include a headmaster valve.
Ratings include the remote condenser motor, as it is designed to be powered by the ice machine. If connecting remote condenser independently of the ice machine, use the information on the condenser's dataplate for fuse and wire sizes.
Condensers are UL listed for these model ice machines.
Model Electrical
Use condenser
Precharged tubing kits:
The ice making head’s and the remote condenser’s refrigeration circuits must be connected. They are designed to be connected using precharged refrigerant tubing, supplied in kits of liquid and discharge tubes. Several lengths are available, order the one that just exceeds the length needed for the site.
C2648 RTEL10 RTEL25 RTEL40 RTEL75
Minimum Circuit Ampacity
10'
Maximum Fuse* Size
20’ 40’ 75’
Suggested Fuse* Size
Central Condenser (Rack) Coils
The ice machine may be connected to a central condenser coil. The requirements are:
•
Coil – not previously used with mineral oil system. Virgin coil preferred.
•
Correct size (internal volume) and capacity (BTUH). Contact Scotsman for data.
•
Includes a headmaster valve for discharge pressure control rated at 217 PSIG.
•
Fan motor on all the time or controlled to be on whenever the ice machine is operating.
•
U.L. listed for the ice machine
•
Non-Scotsman condensers must have prior Scotsman Engineering approval for warranty coverage to be in effect.
No additional refrigerant is required.
Page 4
C2648 Service Manual - Installation
PRC241-32A
90
29.50
749.30
37.66
956.61
38.91
988.36
27.57
MOUNTING
HOLES Ø .562
700.28
.87
22.10
18.48
469.37
14.61
371.19
23.57
598.58
10.72
272.20
DISCHARGE LINE 5/8 IN. MALE CPLG.
LIQUID LINE 1/2 IN. MALE CPLG.
Ø .88
ELECTRICAL
INLET
AIR
FLOW
33.38
MOUNTING
HOLES Ø.562
847.95
34.65
880.11
2.77
70.31
31.86
809.32
48.33
47.89
34.06
FRONT VIEW
28.28
27.56
RIGHT VIEW
3.50
11.80
19.75
4.50
2.50
15.00
4.25
20.25
2.30
40.50
DROP ZONE
TOP VIEW
MIN. BIN TOP OPENING
ULTRASONIC BIN LEVEL SENSOR
0
4.13
5.01
7.43
38.62
39.62
0
3.79
7.04
27.97
28.57
31.53
ELECTRICAL
REMOTE CONDENSER FAN MOTOR
DRAIN 3/4" F.P.T.
POTABLE WATER 3/8" FLARE (FITTING INCLUDED)
BACK VIEW
Condenser and Ice Machine Layouts
Page 5
C2648 Service Manual - Installation
Water
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. There are two ways water can contain impurities: in suspension or in solution. Suspended solids can be filtered out. In solution or dissolved solids cannot be filtered, they must be diluted or treated.
Water filters are recommended to remove suspended solids. Some filters have treatment in them for suspended solids. Check with a water treatment service for a recommendation.
Scotsman filters:
A triple head filter is recommended. Either the Scotsman SSM3 taste and odor filter system, or the ADS-AP3 AquaPatrol system.
Water flow is 2.5 GPM when filling the reservoir.
RO water:
Water Purge
Cube ice machines use more water than what ends up in the bin as ice. While most water is used during ice making, a portion is designed to be drained out every cycle to reduce the amount of hard water scale in the machine. That’s known as water purge, and an effective purge can increase the time between needed water system cleaning.
In addition, this product is designed to automatically vary the amount of water purged based on the purity of the water supplied to it. The water purge rate can also be set manually. Adjustments of purge due to local water conditions are not covered by warranty.
This machine can be supplied with Reverse Osmosis water, but the water conductivity must be no less than 10 microSiemens/cm.
Potential for Airborne Contamination
Installing an ice machine near a source of yeast or similar material can result in the need for more frequent sanitation cleanings due to the tendency of these materials to contaminate the machine. Most water filters remove chlorine from the water supply to the machine which contributes to this situation. Testing has shown that using a filter that does not remove chlorine, such as the Scotsman Aqua Patrol, will greatly improve this situation, while the ice making process itself will remove the chlorine from the ice, resulting in no taste or odor impact. Additionally, devices intended to enhance ice machine sanitation, such as the Scotsman Aqua Bullet, can be placed in the machine to keep it cleaner between manual cleanings.
Page 6
C2648 Service Manual - Installation
Panel Removal
1. Locate and loosen the two screws at the front edge of the top panel.
2. Pull the front panel out at the top until it clears the top panel.
3. Lift the front panel up and off the machine.
4. Remove two screws from the front edge of the top panel.
5. Lift up the front of the top panel, push it back an inch, then lift to remove.
6. Locate and loosen the screw holding each side panel to the base.
7. Pull the side panel forward to release it from the back panel.
The model number on the ice machine can be found either on the dataplate, which is on the back panel, or the serial number tag, which is behind the front panel. See the illustration for the locations of the dataplate and the serial number tag.
The remote condenser has a separate model and serial number. Its model and serial number is on the dataplate on the condenser near the quick connect fittings.
5
6
1
Panel Removal
Uncrate and Set Up
Begin with the ice storage bin. Uncrate and attach legs. Check the bin top gasket for tears or gaps. If recycling an older bin, replace the gasket or repair with food grade sealant prior to placing the ice machine on the bin.
Install the bin top adapter if one is required for the application.
If the ice machine has not been unpacked, do so now. Remove the carton from the skid. Cut away any shipping strapping. Lift the ice machine off the skid directly onto the bin.
Note: The machine is heavy. Use a mechanical lift. If lifting from the front, be sure that fork tines are under the front and back of the cabinet. If lifting from the side, be sure to have tines under the front and back. Do not lift on the sump bottom.
Scotsman BH1100, BH1300, BH1600: Position back of ice machine 2 3/8" from back of bin.
Secure the ice machine to the bin with the hardware provided (two metal Z straps and four bolts).
Page 7
C2648 Service Manual - Installation
22.87"
17.15"
40.35"
Remote Condenser Location
Use the following for planning the placement of the condenser relative to the ice machine
Location Limits - condenser location must not exceed ANY of the following limits:
Maximum rise from the ice machine to the
•
condenser is 35 physical feet Maximum drop from the ice machine to the
•
condenser is 15 physical feet Physical line set maximum length is 100 feet.
•
Calculated line set length maximum is 150.
•
Calculation Formula:
Drop = dd x 6.6 (dd = distance in feet)
•
Rise = rd x 1.7 (rd = distance in feet)
•
Horizontal Run = hd x 1 (hd = distance in feet)
•
Calculation: Drop(s) + Rise(s) + Horizontal
•
Run = dd+rd+hd = Calculated Line Length
Configurations that do NOT meet these requirements must receive prior written authorization from Scotsman.
Do NOT:
Route a line set that rises, then falls, then
•
rises. Route a line set that falls, then rises, then falls.
•
Calculation Example 1:
The condenser is to be located 5 feet below the ice machine and then 20 feet away horizontally.
5 feet x 6.6 = 33. 33 + 20 = 53. This location would be acceptable
Calculation Example 2:
The condenser is to be located 35 feet above and then 100 feet away horizontally. 35 x 1.7 = 59.5.
59.5 +100 = 159.5. 159.5 is greater than the 150 maximum and is NOT acceptable.
rd
hd
Max 35'
Max 15'
dd
Remote Condenser Located ABOVE Ice Machine
Remote Condenser Located BELOW Ice Machine
Condenser Distance & Location Schematic
Page 8
C2648 Service Manual - Installation
For The Installer: Remote Condenser
Locate the condenser as near as possible to the interior location of the ice machine.
Note: The location of the condenser is relative to the ice machine is LIMITED by the specification on the prior page.
Meet all applicable building codes.
Remote Condenser
Roof Attachment
Install and attach the remote condenser to the roof of the building, using the methods and practices of construction that conform to the local building codes, including having a roofing contractor secure the condenser to the roof.
Interconnecting Tubing
Power
Supply
Ice Machine
Remote Condenser, Typical System Illustration
Page 9
C2648 Service Manual - Installation
Precharged Line Routing
Do not connect the precharged tubing until all routing and forming of the tubing is complete. See the Coupling Instructions for final connections.
1. Each set of pre-charged tubing lines contains a
1/2” diameter liquid line, and a 5/8” diameter discharge line. Both ends of each line have quick connect couplings, the end without access valves goes to the ice maker.
Note: The openings in the building ceiling or wall, listed in the next step, are the minimum sizes recommended for passing the refrigerant lines through.
Minimize tubing routed outside of the
2. Have the roofing contractor cut a minimum hole for the refrigerant lines of 2”. Check local codes, a separate hole may be required for the electrical power supply to the condenser.
Caution: Do NOT kink the refrigerant tubing while routing it.
3. Route the refrigerant tubes thru the roof opening. Follow straight line routing whenever possible. Excess tubing may EITHER be coiled up INSIDE the building OR cut out prior to connection to the ice maker and condenser.
If the excess tubing is cut out, after re-brazing the tubing must be evacuated prior to connection to the ice maker or condenser.
If the excess tubing is to be coiled, spiral it
horizontally to avoid excess trapping in the lines.
5. Have the roofing contractor seal the holes in the roof per local codes
Best Practice: Coil excess tubing inside the building in a
Page 10
C2648 Service Manual - Installation
Coupling Instructions
The couplings on the ends of the pre-charged line sets are self-sealing when installed properly. Follow these instructions carefully.
These steps must be performed by an EPA Certified Type II or higher technician.
Initial Connections
1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to remove any possible foreign matter.
It is important that ONLY the nut on the pre-charged tube be turned, or the diaphragms will be torn out by the piercing knives and they will be loose in the refrigeration system. Note: As the couplings are tightened, the diaphragms in the quick connect couplings will begin to be pierced. As that happens, there will be some resistance to tightening the swivel nut.
2. Lubricate the inside of the couplings, especially the O-rings, with refrigerant oil.
3. Position the fittings on the correct connections on the condenser and ice machine.
•
The discharge line goes to the remote condenser fitting marked “discharge line”.
•
The 1/2" liquid line goes to the remote condenser fitting marked “liquid line”.
•
The discharge line goes to the ice maker fitting marked “discharge line”.
•
The 1/2" liquid line goes to the ice maker fitting marked “liquid line”.
Final Connections:
4a. Begin by tightening the couplings together by hand until it is certain that the threads are properly engaged.
4b. Then using two wrenches tighten the coupling until it bottoms out or a definite increase in resistance is felt.
Page 11
4c. Continue tightening the swivel nut until it bottoms out or a very definite increase in resistance is felt (no threads should be showing).
5. Use a marker or pen to mark a line on the coupling nut and unit panel. Then tighten the coupling nut an additional one-quarter turn. The line will show the amount that the nut turns. Do NOT over tighten.
6. After all connections have been made, and after the king valve has been opened (do not open yet), check the couplings for leaks.
C2648 Service Manual - Installation
Plumbing Requirements
All models require connection to cold, potable water. A hand actuated valve within site of the machine is required. There is a single 3/8” flare nut inlet water connection, and a 3/8” to 3/8” flare union is supplied with the machine and can be used if desired.
Water Filters Install a new cartridge if the filters were used with a prior machine.
Drains
All models require drain tubing to be attached to them. There is a single ¾” FPT drain fitting in the back of the cabinet.
Install new tubing when replacing a prior ice machine, as the tubing will have been sized for the old model and might not be correct for this one.
1. Connect water supply to water inlet fittings.
2. Connect drain tubing to drain fitting.
3. Route the drain tubing to building drain. Follow local codes for air gap.
4. Use rigid drain tubes and route them separately – do not Tee into the bin’s drain.
Vent the reservoir drain. A vertical vent at the back of the drain, extended about 8 – 10” will allow the gravity drain to empty and also keep any surges during draining from discharging water.
Horizontal runs of drain tubing need a ¼” per fall per foot of run for proper draining.
Follow all applicable codes.
Water Inlet Connection
Potable
Water
Optional
Water Filters
Floor Drain
Reservoir Drain, Venting Required
Water Supply and Drain Connections
Page 12
C2648 Service Manual - Installation
Electrical
The machine is not supplied with a power cord, one must either be field installed or the machine hard-wired.
The dataplate on the back of the cabinet details the power requirements, including voltage, phase, minimum circuit ampacity and maximum fuse size. HACR type circuit breakers may be used in place of fuses. Extension cords are not permitted. Use of a licensed electrician is recommended.
The ice maker is designed to operate on its own electrical circuit and must be individually fused. Voltage variation must not exceed the limits listed earlier.
The remote condenser is designed to be powered from the ice machine. A separate knockout hole has been provided near the ice maker electrical junction box.
Electrical connections are made inside the junction box in the back panel of the ice machine.
1. Remove the junction box cover and route the power cord through the access hole and properly attach the power supply wires to the leads in the junction box.
2. Attach the remote condenser fan motor wires to the wires in the junction box tagged “fan motor leads”.
3. Install field supplied strain reliefs per code. Attach a ground wire to the ground connection in the junction box.
4. Check voltage when complete.
5. Return the junction box cover to its original position and secure with the original screws.
Follow all applicable local, state and national codes.
Remote Condenser Electrical Connection
Power
Supply
Fan Motor Wire -
add Strain Relief
Ground Screw
Power Supply -
add Strain Relief
Electrical Connections
Page 13
C2648 Service Manual - Installation
Final Check List:
1. Is the unit located indoors in a controlled
environment?
2. Is the condenser located where it can receive
adequate cooling air?
3. Has the correct electrical power been
supplied to the machine?
4. Have all the water supply connections been
made?
5.
Have all the drain connections been made?
6. Has the remote condenser been properly
installed?
7. Has the interconnecting tubing been properly
routed between the remote condenser and the ice machine?
8. Have the quick connects been properly
connected?
9. Has the power supply wire from the ice
machine to the remote condenser been properly run and connected?
10. Has the unit been leveled?
11. Have all unpacking materials been removed?
12. Is the water pressure adequate?
13. Have the drain connections been checked for
leaks?
14. Has the bin interior been wiped clean or
sanitized?
15. Have any water filter cartridges been
replaced?
16. Have all required kits and adapters been
properly installed?
Page 14
C2648 Service Manual - Installation
Initial Start Up
1. Remove front and left side panels. Check machine for any packing or wires rubbing moving parts. Note location of control board in upper left corner of the machine’s front.
2. Switch on the electrical power to the machine. Observe that some of the control’s indicator lights glow and its display shows O.
3. Wait 4 hours for the compressor’s crankcase heater to warm up the oil in the compressor.
1. Open the water supply valve.
2. Turn the receiver’s outlet valve to the full open
position.
3. Push and release the ON button.
The indicator light will begin to blink F. The purge valve will open and the water pumps will start. The inlet water valve will open to add water to the reservoir. After a few seconds the purge valve will close and the water pumps will stop. Water will flow into the machine until the reservoir is full. The hot gas valves and harvest assist devices will activate and the liquid line solenoid valve will open, then the compressor, remote fan motor and water pumps will start. The display will show a continuous F. Five seconds later the hot gas valves will close and the harvest assist devices will return to their standby positions. Warm air will be discharged from the condenser coil.
4. During the Freeze cycle move each curtain to
confirm the controller is getting the signal from the curtain switch. Two of them will cause the SW1 or SW2 light on the control board to blink ON when the curtain moves away from the evaporator and OFF. One of the curtains will cause the period in the display code to blink ON when the curtain is moved away and OFF when returned to its normal position. Note: Moving the curtain during the Freeze cycle has no affect on unit operation.
6. When the ice has frozen enough, the Ready for Harvest indicator light will be on steady. After it’s been on steady for a few seconds Harvest will begin.
7. The display shows an H.
The hot gas valves open and the harvest assist mechanisms are activated. The purge valve opens to drain some water, when it does the inlet water valve opens to refill the reservoir. After a few seconds the purge valve closes but the inlet water valve continues to fill the reservoir. Harvest continues until the ice is released as a unit from each evaporator and forces each curtain to open. When all curtains have opened and re-closed the controller returns the unit to a freeze cycle.
8. Check the ice harvested for proper bridge thickness. The ice bridge is factory set at 3/16 inch. If needed, adjust bridge thickness. Do NOT make it too thin.
9. Determine the water purge setting from the table on the next page. If desired, change the setting to accommodate the local water conditions.
10. Return the panels to their normal positions and secure them to the machine.
11. Instruct the user in the operation of the machine and its maintenance requirements.
12. Fill out and mail the warranty registration form.
Typical Ice Making Cycle Times (minutes)
Listed times are for clean machines. Cycle times at startup will be longer until the system stabilizes.
Model
o
70
F. cond air
/
o
50
F. water
o
F. cond air
90 /
o
70
F. water
C2648R 11 - 13 13 - 15
5. Observe the Ready for Harvest indicator light. It may blink early in the freeze cycle, that is normal. The control will ignore that signal for the first 6 minutes of freeze.
Page 15
C2648 Service Manual - Installation
Adjustments
Bridge Thickness - For A Service Tech Only
1. Push and hold Off till the machine stops.
2. Remove evaporator cover.
3. Remove left most curtain.
4. Use a box wrench and rotate the bridge thickness adjustment screw in 1/8 turn increments CW to increase bridge thickness. Rotate CCW to decrease bridge thickness.
Caution: Do not make the bridge too thin or the machine will not harvest properly. Bridge thickness adjustments are not covered by warranty.
5. Return curtain to its normal position.
6. Push and release the On button. Check next harvest of ice. Repeat steps 1-6 if needed.
Too Big
1/8 - 3/16" bridge
Just Right,
Small Cube
Just Right,
Medium Cube
Too Small
Ice Bridge Thickness Measurement
Water purge setting
The water purge is factory set to the automatic position, suitable for most water conditions. The setting can be changed to one of 5 manual settings or left on automatic.
1-
purge setting
Water Type
To set:
1. Switch the machine OFF by holding the Off button in until a number or the letter A shows on the display.
Minimum
RO water or equivalent
2­Moderate
3 - Standard
Factory Setting for typical water
4­Heavy
Ice Thickness Sensor
5­Maximum
High TDS water
A - Automatic
Any with conductivity not less than 10
microSiemens/cm
2. Press and release the On button repeatedly until the number on the display corresponds to the desired setting.
3. Press and release the Off switch again to return to the normal control state.
Page 16
C2648 Service Manual - Installation
Use and Operation
Once started, the ice machine will automatically make ice until the bin is full of ice. When ice level drops, the ice machine will resume making ice. There are four indicator lights at the front of the machine that provide information on the condition of the machine.
External Indicator Lights:
Power
•
Status
•
Water
•
Clean
•
Indicator Lights & Their Meanings
Power Status Water De-Scale &
Sanitize
Steady Green Normal Normal – bin full or making ice - -
Blinking Green
Blinking Red -
Yellow - - -
Blinking Yellow
Light off No power Switched off Normal Normal
All Blinking Unit remotely locked out – check with leasing company
If the Water light is on, the machine has sensed a lack of water. Check the water supply to the machine. The water may have been shut off or the water filter cartridges need to be changed.
If the Clean light is on, the machine has determined that it may need to be cleaned. Contact an authorized Scotsman service agent and have the machine cleaned, de-scaled and sanitized.
Self Test Failure
- - - In Cleaning mode
Switching on or off - -
Diagnostic shutdown or, if making ice, temperature sensor failure
Other Indicators
Removal of the front panel allows review of the Code Display and Component Indicator Lights.
Note: A Component Indicator Light switches ON to indicate that the component is operating.
Note: There are three Curtain Switch lights, SW1, SW2 and the Period in the display code. A curtain switch light is ON when a curtain is either open or not present.
Lack of water
-
Time to de-scale and sanitize
Page 17
C2648 Service Manual - Installation
Adjust Ice Level
L
o
w
e
r
Bin
Full
02-4294-01 Rev.A.
Adjust Ice Level
L
o
w
e
r
Bin
Full
Switch Panel Area
There is standard front access to two switches – on and off.
Status
Power Water
To switch the machine OFF, push and release the Off button. The machine will shut off at the end of the next cycle.
To switch the machine ON, push and release the On button. The machine will go through a start up process and then resume ice making.
Control Options
There are two optional, field installed controls that can be on this machine.
On
OffDe-Scale
Adjustable ice level control (optional)
When this option is present there is an adjustment knob and an additional indicator light to the right of the four standard indicator lights. The ultrasonic ice level control allows control of the point that the ice machine stops making ice. Reasons for this include:
Seasonal changes in ice used
•
Planning to sanitize the bin
•
Faster turnover for fresher ice
•
Use of adjustable ice level control
Vari-Smart Control Area
• KVS Adjustable ice level control
•
KSBU Advanced Feature control
Maximum Ice
Minimum Ice
There are several positions the ice level can be set to, including Off (knob and label indicators lined up), where it fills the bin until the standard bin control shuts the machine off. See the kit’s instructions for complete details.
Level
Rotate the adjustment post to the desired ice level. The machine will fill up to that level and when it shuts off the Bin Full indicator light next to the adjustment knob will be On.
Note: Ice will build up in the bin at an angle, the distances controlled will be from the sensor to the top of the ice directly beneath it.
The actual distance between the highest point of the ice may be closer or further away, depending upon the angle of the ice.
Page 18
C2648 Service Manual - Installation
SmartBoard Advanced Feature Control™
See Instructions for Available Features
34
SEL
02-4293-01 Rev A.
ENTER
ESC
Options and Other Information
Smart-Board
When this option is present there is an additional display panel in the area below the main control board. It is not visible when the front panel is on. The Smart-Board’s features include:
Seven day programmable ice level setting
•
when used with the optional Vari-Smart ice level control
Recording of machine operation, including
•
cycle time. Calculation of average cycle time
•
Recall of malfunctions with the time they
•
occurred.
Ice
The cuber drops ice in large sections. That ice will break up into random parts as it falls into the bin, but some large sections may remain on top of the ice in the bin. When removing ice, tap the groups of ice with an ice scoop to separate them into smaller units.
Heat
Most heat is exhausted at the remote condenser. The ice machine head should not generate significant heat.
Noise
The ice machine will make noise when it is in ice making mode. The compressor and water pumps all produce some sound. It is also normal to hear some cracking just before the harvest cycle begins. In addition, during the harvest cycle each harvest assist solenoid will click twice as it pushes the ice out and returns to its normal position. The ice harvests as a unit or slab, which makes some noise when it impacts the bin. These noises are all normal for this machine.
Caution: Do not place anything on top of the ice machine, including the ice scoop. Debris and moisture from objects on top of the machine can work their way into the cabinet and cause serious damage. Damage caused by foreign material is not covered by warranty.
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C2648 Service Manual - Installation
Cleaning, Sanitation and Maintenance
This ice system requires three types of maintenance:
Remove the build up of mineral scale from the ice machine’s water system and sensors.
Sanitize the ice machine’s water system and the ice storage bin.
Clean the remote condenser.
It is the User’s responsibility to keep the ice machine and ice storage bin in a sanitary condition. Without human intervention, sanitation will not be maintained. Ice machines also require occasional cleaning of their water systems with a specifically designed chemical. This chemical dissolves mineral build up that forms during the ice making process.
Sanitize the ice storage bin as frequently as local health codes require, and every time the ice machine is cleaned and sanitized.
The ice machine’s water system should be cleaned and sanitized a minimum of twice per year.
1. Remove front panel.
2. Push and release the blue Harvest button. Machine will go thru a manual harvest of 3 minutes then shut off.
3. Remove all ice from the bin.
4. Push and release the yellow Clean button.
5. Wait until the Purge Valve light goes out, then pour 24 ounces of Scotsman Clear 1 Scale remover into the water reservoir.
Ice machine cleaner contains acids. Acids can cause burns.
If concentrated cleaner comes in contact with skin, purge with water. If swallowed, do NOT induce vomiting. Give large amounts of water or milk. Call Physician immediately. Keep out of the reach of children.
9. Check for scale, repeat steps 3 thru 7 if scale is still evident.
10. Disconnect pump hoses from water distributors.
11. Depress snaps and pull water distributors forward and out of the machine. Remove covers and inspect for scale. Remove any remaining scale. Set aside.
12. Remove evaporator covers, set aside.
13. Remove right side panel and liner, set aside.
14. Remove all three curtains. Set aside.
15. Twist counterclockwise and lift water pumps up and tip to one side.
16. Remove front water reservoir cover plate, set aside.
17. Remove sump cover and water level sensor, set sump cover aside.
6. Operate the machine for at least 10 minutes.
7. Push and release the yellow Clean button again.
8. Operate the machine for at least 20 minutes, then push the red Off button.
18. Pull water reservoir forward; tip up and out of the machine.
19. Mix a locally approved sanitizer solution. If approved, mix one ounce of liquid household
Page 20
C2648 Service Manual - Installation
Inspect Orifice Holes
bleach to two gallons of lukewarm (95-100 degrees F.) water.
20. Thoroughly wash the water reservoir cover plate, sump cover, water distributors, distributor covers, evaporator covers, right side panel liner, curtains and reservoir with the sanitizer solution.
21. Thoroughly wash the shelf of the ice machine cabinet where the reservoir was resting.
22. Thoroughly wash the interior of the evaporator compartments including the back panels and evaporator edges.
Squeeze Tabs Together, Slide Out Until it Stops,
23. Return the reservoir to its original position
24. Return the sump cover, water level sensor, water distributors with covers, pump hoses, evaporator covers, right side panel liner and curtains to their original positions on the ice machine.
25. Return the pumps to their normal positions.
26. Pour one gallon of the sanitizer solution into the reservoir.
27. Push and release the yellow Clean button.
28. Operate the machine for about a minute.
29. Push and release the yellow Clean button again.
30. Operate the machine for 20 minutes then push the red Off button.
Remove Water Distributor
Inspect Water Distributor
Mix a solution of sanitizer and thoroughly wash all interior surfaces of the ice storage bin. Pour excess sanitizer solution into the bin’s drain.
31. Return all removed panels to their original positions.
32. Push and release the green ON button to resume ice making.Remove and discard all ice.
Clean Storage Bin
Mix a solution of Scotsman Nickel Safe ice machine cleaner and wash all interior surfaces of the ice storage bin to remove any mineral scale build up. Pour excess cleaner solution into the bin’s drain.
Page 21
C2648 Service Manual - Installation
Remote condenser and other maintenance
The condenser fins will need to be cleaned.
Push and release the Off button. Wait until the machine stops.
Note: Lock out the controller or the ice machine power supply to prevent an unauthorized fan motor restart.
If there is imbedded grease, use a commercial coil cleaner to wash out the grease. Dust can be blown out with compressed air from the inside or use a vacuum cleaner and soft brush. Be careful not to damage the condenser’s fins. Use a fin comb to straighten any bent fins.
Exterior Panels
The front and side panels are durable stainless steel. Fingerprints, dust and grease will require cleaning with a good quality stainless steel cleaner.
Water filters
If the machine has been connected to water filters, check the cartridges for the date they were replaced or for the pressure on the gauge. Change cartridges if they’ve been installed more than 6 months or if the pressure drops too much when the ice machine fills with water.
Page 22
C2648 Service Manual - Installation
Prodigy Cuber System Information
To Manually Reset the machine.
Push and release the Off button.
Push and release the On button.
To Shut the Machine Off:
1. Push and hold the Off button for 3 seconds or
until the machine stops.
Technical Highlights
Reset or Switch Off
3 Evaporators
•
3 Thermostatic Expansion Valves
•
• 3 Harvest Assist Solenoids
•
3 Hot Gas Valves
•
1 OPR valve
Ice making or the freeze cycle is controlled by an ice thickness sensor on the far left evaporator. When the ice is the correct size the controller switches the machine to a harvest cycle.
All three hot gas valves open at the same time.
Harvest continues until all 3 curtains have opened. After all 3 curtains have opened and re-closed, the freeze cycle restarts.
If one or more of the curtains stay open for 30 seconds or longer, the controller switches the machine off (closes the liquid line solenoid valve then shuts the compressor off) and signals bin full. It will restart ice making when all three curtains are closed.
The OPR valve is set to limit dome pressure during harvest to 80 PSIG.
The optional KVS (Vari-Smart) sensor location is in the base behind the compressor.
Page 23
C2648 Service Manual
Service Table of Contents
Overall System Types: ............. page 2
Controller Information.............. page 3
Controller Information.............. page 4
How It Works ..................page 5
Electrical Sequence - Remote Cooled ..... page 6
Electrical Component Details .......... page 8
Electrical Component Details .......... page 9
Electrical Component Details .......... page 10
Refrigeration ..................page 11
Refrigeration Schematic ............ page 12
Water System..................page 13
Control Operation ................ page 14
Control Safeties.................page 15
Restarts ..................... page 16
Control Button Use (from standby) ....... page 17
Test Procedures - Loads ............ page 31
Test Procedures - Loads ............ page 32
Test Procedures - Loads ............ page 33
Test Procedures - Loads ............ page 34
Reservoir Removal ............... page 35
Controller Differences .............
Thermistor Values ............... page 37
Performance Information ............ page 39
Repair Procedures ............... page 40
Harvest Assist Solenoid ............ page 41
Repair Procedures ............... page 42
Repair Procedures ............... page 43
Repair Procedures ............... page 44
Repair Procedures ............... page 45
Repair Procedures ............... page 46
page 36
Control Button Use - continued ......... page 18
Diagnostics - Remote Air Cooled ........ page 19
Diagnostics - Remote Air Cooled ........ page 20
Diagnostics - Remote Air Cooled ........ page 21
Low Ice Making Capacity ............ page 22
Test Procedures - Sensors ........... page 23
Ice Thickness Sensor.............. page 24
Water Level Sensor............... page 25
Temperature Sensors ............. page 26
Test Procedures - Loads ............ page 27
Test Procedures - Loads ............ page 28
Test Procedures - Loads ............ page 29
Test Procedures - Loads ............ page 30
Repair Procedures ............... page 47
Refrigeration Removal and Replacement Procedures page 48
Refrigeration Removal and Replacement Procedures page 49
Refrigeration Removal and Replacement Procedures page 50
Refrigeration Removal and Replacement Procedures page 51
Refrigeration Removal and Replacement Procedures page 52
Vari-Smart™ Adjustable ice level option .... page 53
Adjustable Ice Level System Information and Diagnosis page 54
Prodigy's Smart-Board™ - an Advanced Feature Control page 55
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