Scotsman SCCG30MA1SU, SCCP30MA1SU, DCE33A1SSD, DCE33PA1SSD User Manual

SCCG50 & SCCP50

Service Manual

Introduction:

This ice machine is the result of Scotsman’s decades of experience as an industry leader in the design and manufacture of both commercial and residential ice machines.

This manual includes the information needed to install, start up and maintain the ice machine. Note any Caution or Warning indicators, as they provide notice of potential hazards. Keep this manual for future reference.

Table of Contents

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 2
Cabinet Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 3
Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 4
Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 5
Door Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 6
Door Panel Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 7
Custom Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 8
Door swing change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 9
Installation: Water & Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 10
Gravity Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 11
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 12
Cube Size Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 13
Harvest Time Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 14
Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 15
Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 16
How to clean the condenser and winterize. . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 17
How to remove scale from the ice making system. . . . . . . . . . . . . . . . . . . . . . . .	Page 18
System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 19
Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 20
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 21
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 22
Performance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 23
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 24
Thermistor Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 25
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 26
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 27
Removal and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 28
Removal and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 29
Removal and Repair - Cabinet Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 30
Refrigeration Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	Page 32
June 2008
Page 1

SCCG50 & SCCP50

Service Manual

Specifications

This ice machine is designed to be used indoors, in a controlled environment. It can be used in a wide variety of environmental conditions, but there are limits. Use outside of the listed limitations is misuse and will void the warranty.

Air temperature limits:

The ice machine will operate adequately within the limits, but functions best in temperatures between 70 and 80 degrees F.

•Minimum – 50 degrees F. (10oC)

•Maximum – 100 degrees F. (38oC)

Water temperature limits:

•Minimum – 40 degrees F. (4.5oC)

•Maximum – 100 degrees F. (38oC)

Water pressure limits:

•Minimum – 20 psi (1.4 bar)

•Maximum – 80 psi (5.5 bar)

Options:

Door Panel kits: Finished door panels are available from Scotsman for attachment to the machine, or a custom panel can be made.

Kit Number	Panel Finish	Handle Finish
KDFW	White	White
KDFWS	White	Stainless Steel
KDFB	Black	Black
KDFBS	Black	Stainless Steel
KDFS	Stainless Steel	Stainless Steel

Kickplate Extension: In some situations the leg levelers will be extended enough to become visible. A kit to extend the kickplate over the legs is KKPF.

Cabinet Stability: In some free standing installations it may be prudent to add a bracket that secures the back of the cabinet to a wall. That kit number is KATB.

Drain Conversion:

Because the ice machine is making a food product, the water supply to the ice machine must be potable, or fit for human consumption.

Electrical

•115 volt, 60 Hz. Plug into dedicated 15 amp circuit.

•Power consumption: 275 - 400 Watts. Varies during Freeze and Harvest cycles.

Voltage limits:

•Minimum - 104 volts

•Maximum – 126 volts

A gravity drain model can be converted to a drain pump model by installing a drain pump kit. The drain pump kit consists of a drain pump, wiring harness and associated tubing. The kit number is A39462-021.

Warranty Information

Warranty information is supplied separately from this manual. Refer to it for coverage. In general, the warranty covers defects in materials or workmanship and does not cover corrections of installation errors or maintenance.

Models: There are six models, all air cooled:

•SCCP50M-1WU – Pump model, white cabinet

•SCCG50M-1WU – Gravity drain model, white cabinet

•SCCP50M-1BU – Pump model, black cabinet

•SCCG50M-1BU – Gravity drain model, black cabinet

•SCCP50M-1SU – Pump model, stainless cabinet

•SCCG50M-1SU – Gravity drain model, stainless cabinet

July 2008

Page 2

SCCG50 & SCCP50

Service Manual

Cabinet Layout

	3 7/8"	FLOOR DRAIN
		ACCESS HOLE
	20 3/8"

	14 7/8"
AIR OUT	AIR IN

22"

.75 SHEET METAL DOOR FRONT

.63 MIN.CABINET DOOR

29 1/4"

4"

2 3/4"

	33 3/8"	MIN.
	34 3/8" MAX.		DRAIN
			FLEXIBLE TUBING
			3/8 I.D.PUMP MODEL (INCLUDED)
			5/8 I.D.GRAVITY MODEL (NOT INCLUDED)
			POTABLE WATER INLET
			1/4" COMPRESSION FITTING
			3 1/4"
			2 1/2"
1"	LEG ADJUSTMENT		1 1/2"
	(4) PLACES	115 V	3 3/4"
		POWER CORD	7 3/8"

June 2008

Page 3

SCCG50 & SCCP50

Service Manual

Air flow

The machine takes in room temperature air at the lower right front and forces warm air out the lower left front. Restricting the airflow will adversely affect the ability of the ice machine to make ice.

Control Panel

Ice Making

Area

Warm Air Out

Air Intake

Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of agencies like U.L.

Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way, including the use of any parts 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 designs are subject to change without notice.

June 2008

Page 4

SCCG50 & SCCP50

Service Manual

Water Quality

All water, including potable water supplied by municipalities, contains some impurities or minerals. Water absorbs impurities from the air as rain and/or as it flows through the ground. Some of the impurities are solid particles, these are known as suspended solids, and a fine particle filter will remove them. Other impurities are chemically bonded to the water molecules, and cannot be filtered out, these are called dissolved solids.

Ice made by this machine will have a lower mineral content than the water it was made from. This is due to the method of making ice. Purer water will freeze first in the ice making molds. The reason for this is that anything dissolved in water lowers the water’s freezing temperature. This concentrates most of the impurities in the ice machine water reservoir where they may form hard deposits known as scale. The machine dilutes the concentration of minerals by over-filling the reservoir during the harvest cycle (with the excess water flowing down the drain). s. Between 2 and 4 pints of water flow into the unit each cycle. Between 1 and 3.5 pints of that rinses the reservoir and goes down the drain.

Some impurities will inevitably remain, and will stick to the parts in the machine, and will cause malformed ice cubes. Eventually, built up mineral scale can shorten machine life.

To keep the machine operating properly, these impurities or minerals will have to be regularly dissolved by an acid cleaning, using Scotsman Ice Machine Scale Remover. Directions for this may be found in the section under cleaning.

Filters and Treatment

In general, it is always a good idea to filter the water. A water filter, if it is of the proper type, can remove taste and odors as well as particles. Some methods of water treatment for dissolved solids include reverse osmosis, and polyphosphate feeders.

RO Water

This machine can be supplied with Reverse Osmosis water, but the water conductivity must be no less than 10 microSiemens/cm. A reverse osmosis system should include post treatment to satisfy the R.O. water’s potential aggressiveness. Deionized water is not recommended.

Because water softeners exchange one mineral for another, softened water may not improve water conditions when used with ice machines. Where water is very hard, softened water could result in white, mushy cubes that stick together.

If in doubt about the water, contact a local point of use water specialist for recommendations on water treatment.

Installation Overview

The ice machine must:

•be connected to cold, potable water

•be connected to a drain

•be connected to the proper power supply

•be able circulate air through the vents at the front.

Note: Do not build in so that the door is recessed.

June 2008

Page 5

SCCG50 & SCCP50

Service Manual

Door Covering

Door Panel

Custom Panel

The ice machine is supplied without a conventional door covering so it can be decorated to the user’s preference. Scotsman offers several coverings including white, black and stainless steel. In addition, a custom built panel can be placed onto the door.

Door Panel Attachment

To attach a Scotsman supplied panel:

Note: If door swing is to be changed, it must be done before panel is attached.

The panel will be held on by 6 sheet metal screws and 2 machine screws.

1.Remove the gasket and retain for later use.

2.If the door panel is stainless steel, remove any plastic covering the stainless steel panel.

3.Place the panel onto the outside of the door, and secure it to the door using two machine screws, located at the left center and right center.

4.Fasten the panel to the door using the 6 sheet metal screws. In the hinge area, use the outermost screw holes.

5.Place the covers over the hinge areas, and secure each cover to the door using a sheet metal screw.

A custom panel of wood or other material not exceeding 15 lb can be attached to the door. Attachment is from the ice side of the door. Holes are provided in the door for this purpose.

See instructions in information packet to create and attach a custom panel:

6.Insert hole plug over screw installed in step 5.

7.Return the gasket to its original position.

June 2008

Page 6

SCCG50 & SCCP50

Service Manual

Door Panel Attachment

Use Upper

Hole at the

Top

Scotsman

Door Panel

Gasket

Machine

Screw

Hole Plug

Use Lower

Hole at the

Bottom

Cover

June 2008

Page 7

SCCG50 & SCCP50

Service Manual

Custom Panel

A custom panel of wood or other material not exceeding 15 lb can be attached to the door. Attachment is from the ice side of the door. Holes are provided in the door for this purpose.

To create and attach a custom panel:

•Panel width: 14 7/8”

•Panel height: Between 29 3/8” and 30 3/8”.

•Panel thickness: 5/8” to ¾”

10. Mount panel to door using wood screws or supplied panel mounting screws.

Note: When installed Ice machine must be adjusted for height to position top of door to desired clearance.

1.Measure overall height of cabinet opening where ice machine will be (floor to bottom of countertop edge).

2.Determine desired kickplate space (from bottom of door to floor). This could be equal to the adjacent cabinet’s kickplate space or another space the user wants.

3.Subtract kickplate space from cabinet opening.

4.Subtract 1/8 or more for clearance space between top of door and bottom of countertop edge from cabinet opening. This is the maximum door length.

5.Cut panel to width.

6.Cut panel to length (cabinet space - kickplate space - top clearance = length).

7.Determine top of panel.

8.Mark hole locations using drawing on the back of these instructions. Drawing assumes top of panel will be flush with top of door. Measure hole locations from the top of the panel.

9.Drill pilot holes for wood screws. Use drill stop to prevent drilling through the panel.

			13 9/16"
			6 25/32"
	13/16"		8 1/4"
			4 1/8"
		13/32"
	14 11/16"
	Ø	1/8"
	TYP.(10)
			30 3/8"
			29 3/8"
	13 31/64"
	13/32"		{Centerline}
			14 7/8"

June 2008

Page 8

SCCG50 & SCCP50

Service Manual

Door swing change

Note: Prior models had separate hinge brackets and different directions to change swing.

Moving the hinges allows the door to open from either the left or right side. Change swing before attaching door panel.

To change:

1.Remove innermost screw holding each hinge to cabinet, loosen the other.

Remove

Loosen

4.Remove hole plugs or screws from unit's new hinge locations, set aside.

5.Move screws loosened in step 1 to opposite location.

6.Install screws or plugs removed in step 4 to the unit's original hinge location to fill the holes.

7.Remove the upper hinge from the door and move it to the door's opposite side, bottom location. Secure using the original screws.

Note: If door panel is attached, it must be removed to access hinge screws and to reverse handle position.

8.Remove the original lower hinge and move it to the door's opposite side, upper location. Secure using the original screws.

9.Install pocket covers and hole plugs onto door.

10.Attach the door to the cabinet using the original screws.

Installation Notes

2. Slide door to the side and remove from cabinet.

Plug	Pocket
	Cover

3.Remove plug and hinge pocket covers from door.

Note: There are either plugs or screws in the holes where the hinges will mount. They must be moved.

Built In Situations: If a finished floor is to be installed in the area after the ice machine has been built in, shims the expected thickness of the floor should be installed under the unit to keep the machine level with the planned floor level.

Installations on a slab: Use a pump model and pump the water to the point of drainage. Pump models will pump 1 story (10 feet) high.

Installations over a crawl space or basement: Either gravity drain or pump model units may be used, if there is not enough room behind the machine for a drain/waste receptacle, the drain will have to be below the floor.

Note: When installed in a corner, the door swing may be limited due to handle contact with the wall or cabinet face.

January 2012

Page 9

SCCG50 & SCCP50

Service Manual

Door swing change

The door can be attached to open with hinges on the left or right using new brackets shipped loose in the ice bin. Retain all screws for re-use.

To change:

1.Remove innermost screw holding each hinge to cabinet, loosen the other.

2.Slide hinges to the side and remove door from cabinet. Remove screws loosened in step

1 from both hinge brackets.

3.Remove two screws securing top panel to back, pull top panel back and remove from cabinet.

4.Remove two screws at the top and lift the door hinge bracket out of the cabinet. Replace with the one supplied loose with the machine. Fasten it to the cabinet using the original screws.

Door Hinge

Bracket

5.Return the top panel to the cabinet and fasten it with the original screws.

6.Remove kickplate and front service panel.

7.Remove two front screws and two bottom screws holding the bottom cross brace to the cabinet. Replace the brace with the one supplied loose with the machine. Secure it using the original screws.

Note: If door panel is attached, it must be removed to access hinge screws and to reverse handle position.

8.Remove the upper hinge and move it to the door's opposite side, bottom location. Secure using the original screws.

9.Remove the original lower hinge and move it to the door's opposite side, upper location. Secure using the original screws.

10.Install a screw removed in step 2 in outermost hole of upper and lower cross braces.

11.Attach the door to the cabinet using the original screws.

12.Return kickplate and front service panel to their original positions and attach to the cabinet using the original screws.

Installation Notes

Built In Situations: If a finished floor is to be installed in the area after the ice machine has been built in, shims the expected thickness of the floor should be installed under the unit to keep the machine level with the planned floor level.

Installations on a slab: Use a pump model and pump the water to the point of drainage. Pump models will pump 1 story (10 feet) high.

Installations over a crawl space or basement: Either gravity drain or pump model units may be used, if there is not enough room behind the machine for a drain/waste receptacle, the drain will have to be below the floor.

Note: When installed in a corner, the door swing may be limited due to handle contact with the wall or cabinet face.

Screw Below

September 2011

Page 9

SCCG50 & SCCP50

Service Manual

Installation: Water & Drain

Water Supply, all models: The recommended water supply tubing is ¼ inch OD copper. Stainless steel flex or reinforced PVC tube may also be used. Install an easily accessible shut-off valve between the supply and the unit. This shut-off valve should not be installed behind the unit.

Note: Do not use self-piercing type valves.

1. Remove the front service panel.

Water Inlet Connection, located at the FRONT of the machine. Do NOT connect to tubing at the back.

Drains

There are two types of ice machine models, one that drains by gravity and one that has an internal drain pump.

Screw

Securing

Front Service

Panel

2.Route the tubing through the right hole in the back to the inlet water solenoid valve inlet.

3.Install a compression fitting on the tubing and connect to the inlet of the solenoid.

Drain Pump Model drain installation

1.Locate the coil of 3/8” ID plastic drain tubing secured to the back of the unit.

2.Route the plastic drain tube from the back of the unit to the drain connection point.

IMPORTANT NOTE: Often an air gap is required by local codes between the ice maker drain tube and the drain receptacle.

Water Inlet Tube (field supplied)

Drain Tube, Route to building drain

Back View, Drain Pump Model

September 2011

Page 10

SCCG50 & SCCP50

Service Manual

Gravity Drain

Caution: Restrictions in the drain system to the machine will cause water to back up into the ice storage bin and melt the ice. Gravity drain tubing must be vented, have no kinks and slope to the building drain. Air gaps are typically required by local code.

1.Place the ice machine in front of the installation opening. Adjust leveling legs to the approximate height.

2.Remove the front service access panel and the upper back panel.

Note: If you are connecting a gravity drain model and the drain opening has been located in the floor under the base pan according to the pre install specifications, follow steps 3 through 5 to drain the unit through the base. If not, proceed to step 6b.

3. Remove the clamp and barbed elbow and take off the plastic cover in the base pan below the drain hose.

4.Connect a straight 5/8” barbed connector to the drain hose, securing with the clamp removed in step 4.

5.Cut an 8” piece of 5/8” ID X 7/8” OD tygon (clear plastic) tubing. Slide one end of the tube onto the outlet of the barbed connector and secure with a clamp. Leave the other end of the tube lying on the floor of the base pan until the unit is positioned over the floor drain.

6.Route the drain tube. Either a) Insert the drain tube through the base pan into the floor drain or b) Route the drain tube through the left hole in the lower back panel and connect to barbed elbow and secure with a clamp.

7.Reinstall the upper back panel.

8.Reinstall the service access panel. Level the unit.

Barbed Elbow

Drain Hose

Water Inlet Tube (field supplied)

Drain Hose, Route to building drain

Back View, Gravity Drain Model

June 2008

Page 11

SCCG50 & SCCP50

Service Manual

Electrical

The ice machine is supplied with a power cord. Do not remove the grounding pin from the cord’s plug. Do not use extension cords. Follow all codes.

Connect the machine to its own 115 volt, 15 amp circuit.

1.If the electrical outlet for the ice maker is behind the unit, plug in the unit.

2.Position the unit in the installation opening.

3.Turn on the water supply. Make sure that the ice maker is plugged in and the power is on.

4.Slide unit into installation opening, paying careful attention to water supply and drain connections. Do not kink!

5.Pour a couple of quarts of water into the ice storage bin; on drain pump equipped machines the drain pump should start and water should pump out. Check for leaks.

6.Replace the service access panel.

7.Level the unit as needed.

Installation check list:

1.Has the unit been connected to the proper water supply?

2.Has the water supply be checked for leaks?

3.Has the unit been connected to a drain?

4.Has the drain been tested for flow and leaks?

5.Has the unit been connected to the proper electrical supply?

6.Has the unit been leveled?

7.Have all packing materials been removed from the machine?

8.Has the door covering been installed?

Initial Start Up

1.Turn on the water supply.

2.Switch on the electrical power.

3.Push and release the On/Off switch to start the machine. The Ice Making light next to the On/Off switch will glow Green.

4.Water will begin to flow into the unit. When the reservoir is full, water will start to drain from the machine. After a few minutes the compressor, water pump and fan motor will begin to operate and the first ice making cycle will have begun.

No adjustments are needed.

After about a half hour, ice will fall into the ice storage bin. The machine makes 24 cubes per batch. It is normal for the first batches of ice to melt, that continues until the bin has cooled. It will take 8 to 10 hours of continuous run time to fill the ice bin. When the bin is full of ice, the ice machine will shut off. It will automatically restart when the ice level falls, either from use or normal meltage.

June 2008

Page 12

SCCG50 & SCCP50

Service Manual

Cube Size Adjustment

The cube size can be adjusted by changing the amount of freeze cycle time. This is done by a button press sequence.

Note: There is only one correct cube size. See the illustrations.

To adjust cube size:

1.Shut the machine off: If it's off on bin full press and release the On/Off button once, switching the Ice Making light off. If the machine is making ice hold the On/Off button in until the Ice Making light is off.

2.Press and hold the Clean button for 5 seconds (light on), then release (light out)

Side Views of Cubes

Too Small, Adjust Cycle Longer

3. View the lights. Compare to the table below.

Cube Size Change Table

	On/Off	Water	Clean
Default	off	off	off
Add 1 minute	on	off	off
Add 2 minutes	off	on	off
Add 3 minutes	off	off	on
Add 4 minutes	on	on	on
- 1 minute	flash	off	off
- 2 minutes	off	flash	off
- 3 minutes	off	off	flash
- 4 minutes	flash	flash	flash

4.Select the amount of change.

5.Push and release the On/Off button until the correct light pattern is displayed.

6.Push and release the Clean button to select that setting.

Just Right

Too Large, Adjust Cycle Shorter

7. Push and release On/Off to return to ice making.

June 2008

Page 13

SCCG50 & SCCP50

Service Manual

Harvest Time Adjustment

The harvest time can be adjusted so that all the ice harvests during the cycle, plus a few seconds extra. This is done by a button press sequence.

Note: Do not set harvest time shorter than the actual time it takes to release all the cubes.

To adjust Harvest Time:

1.Shut the machine off by holding the On/Off button in until it shuts off (Ice Making light off).

2.Press and hold the On button again for 5 seconds, then release (Ice Making light will switch off).

3.View the lights. Compare to the table below.

Harvest Time Table

	On/Off	Water	Clean
Default	off	off	off
Add 10 seconds	on	off	off
Add 20 seconds	off	on	off
Add 30 seconds	off	off	on
Add 40 seconds	on	on	on
- 10 seconds	flash	off	off
- 20 seconds	off	flash	off
- 30 seconds	off	off	flash
- 40 seconds	flash	flash	flash

4.Select the amount of change.

5.Push and release the Clean button until the correct light pattern is displayed.

6.Push and release the On button to select that setting.

7.Push and release On/Off to return to ice making.

June 2008

Page 14

SCCG50 & SCCP50

Service Manual

Control Settings

Automatic water purge enable / disable

The control is set at the factory to automatically select the proper amount of water purge. If desired, that can be disabled, and a typical purge amount used.

To disable Automatic purge selection:

1.Press and hold the On/Off button until the unit shuts off. No lights should be on.

2.Press and hold the ON button for 5 seconds, then release.

3.Wait between 5 and 20 seconds, then repeat step 1. All lights will flash once.

To return to Automatic purge selection:

1.Press and hold the ON button for 5 seconds, then release.

2.Wait between 5 and 20 seconds, then repeat step 1. All lights will flash twice.

Manual Harvest - from the OFF or Standby Mode (powered but no lights are on)

1.Press and hold the Clean-Reset button for 5 seconds and release.

2.Wait between 5 and 20 seconds, then repeat step 1. All lights will flash once. The On/Off light will be on until harvest has timed out.

Reset time to clean indicator light

Press and hold the Clean-Reset button for 3 seconds.

June 2008

Page 15

SCCG50 & SCCP50

Service Manual

Use

No special instructions are needed for use. Just take as much ice as you need, the machine will replace it. A scoop is provided, and it can be stored in the machine using the loop of tubing on the right side as a holder.

The machine can be shut off anytime by just pushing and releasing the On/Off button. The machine will shut off at the end of the next cycle. To shut off immediately, push and hold the On/Off button in until the machine stops.

What shouldn’t be done?

Never keep anything in the ice storage bin that is not ice. Objects like wine or beer bottles are not only unsanitary, but the labels can slip off and plug up the drain.

Never allow the machine to operate without regular cleaning. The machine will last longer if it is kept clean. Regular cleaning should happen at least once per year, and preferably twice. Some water conditions will dictate even more frequent cleaning of the ice making section, and some carpets or pets will dictate more frequent cleaning of the condenser.

Note: The Time to Clean light will switch ON after 6 months of use. It will remain ON until the ice making system is cleaned using the process on page 13.

Noise:

The ice machine is designed for quiet operation, but will make some noise during the ice making cycle. During a freezing cycle, it is normal to hear the fan moving air and the water pump circulating water. Ice hitting the bin or ice in the bin can be heard during harvest.

If ice making noise is objectionable, an appliance grade timer can be added to the power supply. Set the timer to turn the machine off at the time(s) of day when the noise is most objectionable.

Normal cubes are tapered cylinders. If the cubes are ragged and mis-shaped, mineral scale must be removed from the ice making system

Maintenance

There are 5 things to keep clean:

1.The outside cabinet & door.

2.The ice storage bin.

3.The condenser.

4.The ice making system.

5.The ice scoop.

How to clean the cabinet.

Wipe off any spills on the surface of the door and handle as they occur. If anything spilled on the door or gasket dries onto the surface, wash with soap and warm water to remove.

How to clean the ice storage bin.

The ice storage bin should be sanitized occasionally. It is usually convenient to sanitize the bin after the ice making system has been cleaned, and the storage bin is empty.

A sanitizing solution can be made of 1 ounce of household bleach and two gallons of hot (95oF. – 115oF.) water. Use a clean cloth and wipe the interior of the ice storage bin with the sanitizing solution, pour some of the solution down the drain.

Allow to air dry.

June 2008

Page 16

SCCG50 & SCCP50

Service Manual

How to clean the condenser and winterize.

Condenser cleaning

Winterizing

The condenser is like the radiator on a car, it has fins and tubes that can become clogged with dirt and lint. To clean:

1.Remove the kickplate and front service panel.

2.Locate the condenser surface.

1.Clean the ice making system.

2.Open the door and push and release the On/Off switch to turn the machine off.

3.Turn off the water supply.

4.Drain the water reservoir by removing the rubber cap under the reservoir - it's near the back wall of the ice storage bin.

Rubber Cap

3.Vacuum the surface, removing all dust and lint. Caution: Do not dent the fins.

4.Return the kickplate and front service panel to their original positions. Fasten them to the cabinet using the original screws.

5.Disconnect the incoming water line at the inlet water valve.

6.Open the door, push and release the on/off switch to turn the machine on.

7.Blow air through the inlet water valve; a tire pump could do the job.

8.Drain pump models should have about 1/2 gallon of RV antifreeze (propylene glycol) poured into the ice storage bin drain.

Note: Automotive antifreeze must NOT be used.

9. Switch off and unplug the machine.

June 2008

Page 17

SCCG50 & SCCP50

Service Manual

How to remove scale from the ice making system.

1.Scoop out all of the ice, either discard it or save it in an ice chest or cooler.

2.Press and HOLD the On/off button in for 3 seconds until the Green light goes out.

3.Press and HOLD the both the Clean-Reset and On/Off buttons for 5 seconds. The Time to Clean light will blink on and off.

4.Pour 8 ounces of Scotsman Ice Machine Scale Remover (available from a local Scotsman Distributor or Dealer) into the ice machine reservoir.

5.Operate the machine for about ½ hour.

6.Push and release the On/Off switch. The machine will begin to flush out the cleaning solution.

7.Operate the machine for another ½ hour.

8.Push and release the On/Off switch. The machine will stop the cleaning process.

9.Pour a gallon of hot (95oF. – 115oF.) water into the bin to flush out the drain.

10.Clean the bin liner of mineral scale by mixing some ice machine scale remover and hot water, and using that solution to scrub the scale off of the liner.

11.Rinse the liner with hot water.

12.Sanitize the bin interior.

13.Replace the ice removed in step 1.

14.Push and release the On/Off button to restart ice making.

The ice scoop should be washed regularly, wash it just like any other food container.

Pour Scale

Remover Here

June 2008

Page 18

SCCG50 & SCCP50

Service Manual

System Information

	Overall:		Electrical Sequence:
	•	Refrigerant: 8 oz R-134a	A closed bin thermostat signals to the controller a
	•	Compressor: Hermetic, 1300 BTUH, X HP	need for ice. The controller checks for water, if
			water is needed , the controller opens the inlet
	•	Condenser: Forced draft
			water solenoid valve to fill the reservoir. The hot
	•	Fan blade: 5 blade, 7 inch
			gas valve is open to equalize the system. When the
	•	Evaporator: Inverted, 24 cube cells. Copper
			reservoir is full, the compressor, fan motor, water
		cups attached to continuous serpentine
			pump are switched on. After 5 seconds the hot gas
	•	Metering device: Cap tube
			valve shuts and ice making begins.
	• Defrost method: Hot gas bypass with water
		assist	Water is sprayed up into the inverted cup mold. As
	•	Spray method: 6 water jets	the water is cooled and ice begins to form in the
	•	Water charge: 40 ounces	cups, the temperature of the evaporator will fall.
	• Water valve: 115 volt solenoid, .19 GPM		The freeze cycle continues until the temperature of
	•	Water fill time: Varies with harvest time &
			the thermistor attached to the evaporator outlet
		purge setting
			tube falls to about zero degrees F. At that point the
	•	Spray pump: Pedestal type.
			controller starts a freeze cycle timer, whose default
	•	Drain pump: Magnetic drive, controlled by
			time is 10 minutes. At the end of the freeze cycle's
		pressure switch
			timed portion the controller switches to the harvest
	•	Purge method: Overflow standpipe	cycle.
	•	Control method: Electronic
	•	Cycle control: Thermistor + timers	The harvest cycle begins with the controller
	•	Freeze cycle timer: 10 minutes, + - 4	stopping the water pump and fan motor. At the
			same time it opens the hot gas valve and the inlet
	•	Harvest cycle timer: 20 seconds, + - 40
			water solenoid valve. The ice is released by the
	•	Cube size adjustment: Freeze timer change.
			combination of discharge refrigerant gas entering
	• Harvest cycle adjustment: Harvest timer
			the evaporator serpentine and warming up the
		change
			copper, plus the inlet water that flows to the
	•	Bin control: Thermostat. Opens on	evaporator, floods across the plastic platen to
		temperature fall, Cut Out: 35 degrees F. Cut	warm it up and be pre-chilled for the next cycle. Ice
		In 45 degrees F. Range is adjustable.	cubes drop individually and harvest continues until
			the thermistor attached to the suction line warms
	Electrical Components:		up to about 50 degrees F. At that point a harvest
			timer starts, whose default time is 20 seconds. At
	•	Compressor	the end of that time the harvest cycle ends and the
	•	Fan motor	freeze cycle restarts.
	•	Spray pump motor	Bin control.
	•	Drain pump motor
	•	Drain pump switch	The machine's on and off modes are regulated by a
	• Bin light - LED type
			bin thermostat. The cap tube for the bin thermostat
	•	Bin light switch - magnetic reed	is in the tube that holds the scoop. The machine
	•	Inlet water solenoid valve	will only begin ice making when the thermostat's
	•	Hot gas valve	contacts close. If the contacts re-open before the
	•	Transformer	temperature of the evaporator drops below a preset
			point, the machine will stop. If the temperature is
	•	Controller
			below that point when the contact s open, the
	•	Water sensor
			machine will continue through a complete cycle
	•	Thermistor
			and stop at the end of the harvest cycle.
	•	Bin thermostat

September 2008

Page 19

SCCG50 & SCCP50

Service Manual

Water System

The controller uses a Water Sensor to check for the presence of water in the reservoir and to measure the conductivity of the water.

The water sensor consists of two stainless steel probes located in a holder next to the water pump.

The probes sense the conductivity of the water. The higher the mineral content of the water, the better it can conduct electricity. The control system is capable of sensing water as clean as 10 microSiemens/cm.

If the controller cannot sense water and the bin thermostat is closed the controller will power the inlet water solenoid valve to fill the reservoir. The water fill is timed. There is a maximum amount of time allowed from the time the controller turned on the inlet water valve until the water sensor signals to the controller. That time is 2 1/2 minutes. If water is not sensed within 2 1/2 minutes, the controller will not proceed with an ice making cycle. Instead it will blink the Water light and try filling the reservoir in 20 minutes.

Reservoir water dilution

The process of making ice from circulating water causes the pure water to freeze first, because it freezes at the warmest temperature. The remaining water will develop an increasing concentration of minerals. If that mineral concentration were allowed to continue, eventually the ice machine would become coated with mineral scale.

To combat the mineral build up, the reservoir water is diluted with fresh water every cycle. The controller adds enough water to fill the reservoir and extra water to overfill it. The extra water drains out through the standpipe in the reservoir.

The controller keeps the inlet water solenoid valve open until the evaporator temperature set point is reached, plus some extra time. The extra time is either pre-set or automatically determined by the controller.

Evaporator

Pump

Reservoir

Drain

Freeze Cycle Water Schematic

Standpipe

Inlet Water Solenoid Valve

Harvest Cycle Water Schematic

November 2008

Page 20

SCCG50 & SCCP50

Service Manual

Components

Model and

Serial Tag

Location

Scoop and Thermostat Bracket

Control Panel, Bin Light and Curtain

Evaporator Platen

Evaporator and Controller

Inlet Water Solenoid Valve

Condenser and Bin Thermostat

June 2008

Page 21

SCCG50 & SCCP50

Service Manual

Controller

High

Voltage Evaporator

Connector Thermistor

	Bin
	Thermostat
Comp	Water Sensor
Water	Bin Light
Hot Gas
Fan
Power
Power Supply	Control Panel
Connector	Ribbon

The controller is located at the front of the unit,	Control Safeties:
under the top panel.

It is powered by a 12 volt transformer. It has 5 indicator lights:

•Compressor - Light is ON if compressor is powered

•Water - Light is ON if inlet water solenoid valve is powered

•Hot Gas - Light is ON when Hot Gas Valve is powered

•Fan - Light is ON when Fan motor is powered

•Power - Light is ON when power is connected to controller

No Water. If the Water Sensor cannot detect water, and the inlet water solenoid valve has been on for the maximum fill time, the controller will stop all action and wait 20 minutes to re-try water fill. During this time the Check Water light on the control panel will be blinking,

Maximum Freeze Time. If the freeze cycle should extend to 60 minutes, the controller will automatically put the machine into a Harvest cycle.

Maximum Harvest Time. 6 minutes

Time between restarts. After the machine has operated and then turned off, the controller will not restart the machine for four minutes.

June 2008

Page 22

SCCG50 & SCCP50

Service Manual

Performance Information

	Freeze Cycle, Minutes					Air Temperature
				100	90	80	70	60	50
		100		37-38	36-37	34-35	32-33	31-32	29-30
		90		36-37	35-36	33-34	31-32	30-31	28-29
		80		36-35	32-33	30-31	28-29	27-28	26-27
	Water	70		32-33	28-29	27-28	25-26	23-24	22-23
	Temperature
		60		27-28	25-26	24-25	22-23	20-21	19-20
		50		20-21	19-20	18-19	17-18	16-17	15-16
		40		18-19	17-18	16-17	15-16	15-16	15-16
	Harvest Cycle, Seconds					Air Temperature
				100	90	80	70	60	50
		80	-100	55-60	60-70	70-80	80-90	90-100	110-115
	Water	70	- 80	65-75	70-80	75-85	85-95	95-105	115-120
	Temperature	50	- 70	70-80	75-85	85-95	125-135	140-150	160-170
		40	- 50	100-120	115-125	130-140	150-170	180-200	210-230
	Total Cycle, Minutes					Air Temperature
				100	90	80	70	60	50
		100		38-39	37-38	36-37	34-35	33-34	31-32
		90		38-39	36-37	35-36	33-34	32-33	30-31
		80		37-38	33-34	31-32	30-31	29-30	27-28
	Water	70		33-34	29-31	28-29	26-27	25-26	24-25
	Temperature
		60		29-30	27-28	25-26	24-25	22-23	21-22
		50		21-22	20-21	19-20	19-20	19	18-19
		40		20-21	19-20	19	18-19	19	19-21

Ice per cycle: 1 lb

Water drained / cycle: Varies by harvest cycle length and purge setting. Typical amounts are @ 70/50 = 52 oz. @ 90/70 = 13 oz

Compressor amps: 2.6 - 3.2

June 2008

Page 23

SCCG50 & SCCP50

Service Manual

Refrigeration System

Suction Pressure

	70
	60
	50
PSIG	40
	30
	20
	10
	0
	-10
	Time

Discharge Pressure

	150
	140
	130
	120
	110
PSIG	100
	90
	80
	70
	60
	50
	Time

June 2008

Page 24

SCCG50 & SCCP50

Service Manual

Thermistor Values

Deg. F ·	Ohms	Deg. F ·				Ohms	Deg. F. · Ohms				Deg. F.			Ohms	Deg. F. · Ohms
0· · · ·	85325	52	·	·	·	18873	104	·	·	5325	156	·	·	1819	208	·	·	724
1· · · ·	82661	S3 ·		·	·	18381	105	·	·	5208	157	·	·	1785	209	·	·	713
2· · · ·	80090	54 ·		·	·	17903	106	·	·	5093	158	·	·	1752	210	·	·	701
3· · · ·	77607	55 ·		·	·	17439	107	·	·	4981	159	·	·	1719	211	·	·	690
4· · · ·	75210	56 ·		·	·	16988	108	·	·	4872	160	·	·	1687	212	·	·	679
5· · · ·	72896	57 ·		·	·	16551	109	·	·	4766	161	·	·	1655	213	·	·	668
6· · · ·	70660	58 ·		·	·	16126	110	·	·	4663	162	·	·	1624	214	·	·	657
7· · · ·	68501	59 ·		·	·	15714	111	·	·	4562	163	·	·	1594	215	·	·	646
8· · · ·	66415	60 ·		·	·	15313	112	·	·	4463	164	·	·	1565	216	·	·	636
9· · · ·	64400	61 ·		·	·	14924	113	·	·	4367	165	·	·	1536	217	·	·	626
10 · · ·	62453	62 ·		·	·	14546	114	·	·	4273	166	·	·	1508	218	·	·	616
11 · · ·	60571	63 ·		·	·	14179	115	·	·	4182	167	·	·	1480	219	·	·	606
12 · · ·	58752	64 ·		·	·	13823	116	·	·	4093	168	·	·	1453.	220	·	·	597
13 · · ·	56995	65 ·		·	·	13476	117	·	·	4006	169	·	·	1427	221	·	·	587
14 · · ·	55296	66 ·		·	·	13139	118	·	·	3921	170	·	·	1401	222	·	·	578
15 · · ·	53653	67 ·		·	·	12812	119	·	·	3838	171	·	·	1375	223	·	·	569
16 · · ·	52065	68 ·		·	·	12494	120	·	·	3757	172	·	·	1350	224	·	·	560
17 · · ·	50529	69 ·		·	·	12185	121	·	·	3678	173	·	·	1326	225	·	·	551
18 · · ·	49043	70 ·		·	·	11884	122	·	·	3601	174	·	·	1302	226	·	·	543
19 · · ·	47607	71 ·		·	·	11592	123	·	·	3526	175	·	·	1279	227	·	·	534
20 · · ·	46217	72 ·		·	·	11308	124	·	·	3452	176	·	·	1256	228	·	·	526
21 · · ·	44872	73 ·		·	·	11031	125	·	·	3381	177	·	·	1234	229	·	·	518
22 · · ·	43571	74 ·		·	·	10763	126	·	·	3311	178	·	·	1212	230	·	·	510
23 · · ·	42313	75 ·		·	·	10502	127	·	·	3243	179	·	·	1190	231	·	·	502
24 · · ·	41094	76 ·		·	·	10247	128	·	·	3176	180	·	·	1169	232	·	·	495
25 · · ·	39915	77 ·		·	·	10000	129	·	·	3111	181	·	·	1149	233	·	·	487
26 · · ·	38774	78 ·		·	·	9760	130	·	·	3047	182	·	·	1129	234	·	·	480
27 · · ·	37669	79 ·		·	·	9526	131	·	·	2985	183	·	·	1109	235	·	·	472
28 · · ·	36600	80 ·		·	·	9299	132	·	·	2924	184	·	·	1090	236	·	·	465
29 · · ·	35564	81 ·		·	·	9077	133	·	·	2865	185	·	·	1071	237	·	·	458
30 · · ·	34561	82 ·		·	·	8862	134	·	·	2807	186	·	·	1052	238	·	·	451
31 · · ·	33590	83 ·		·	·	8652	135	·	·	2751	187	·	·	1034	239	·	·	444
32 · · ·	32649	84 ·		·	·	8448	136	·	·	2696	188	·	·	1016	240	·	·	438
33 · · ·	31738	85 ·		·	·	8250	137	·	·	2642	189	·	·	998	241	·	·	431
34 · · ·	30855	86 ·		·	·	8056	138	·	·	2589	190	·	·	981	242	·	·	425
35 · · ·	30000	87 ·		·	·	7868	139	·	·	2537	191	·	·	965	243	·	·	419
36 · · ·	29171	88 ·		·	·	7685	140	·	·	2487	192	·	·	948	244	·	·	412
37 · · ·	28368	89 ·		·	·	7507	141	·	·	2438	193	·	·	932	245	·	·	406
38 · · ·	27589	90 ·		·	·	7333	142	·	·	2390	194	·	·	916	246	·	·	400
39 · · ·	26835	91 ·		·	·	7164	143	·	·	2343	195	·	·	901	247	·	·	394
40 · · ·	26104	92 ·		·	·	6999	144	·	·	2297	196	·	·	885	246	·	·	389
41 · · ·	25395	93 ·		·	·	6839	145	·	·	2252	197	·	·	871	249	·	·	383
42 · · ·	24707	94 ·		·	·	6683	146	·	·	2208	198	·	·	856	250	·	·	377
43 · · ·	24041	95 ·		·	·	6530	147	·	·	2165	199	·	·	842
44 · · ·	23394	96 ·		·	·	6382	148	·	·	2123	200	·	·	828
45 · · ·	22767	97 ·		·	·	6238	149	·	·	2082	201	·	·	814
46 · · ·	22159	98 ·		·	·	6097	150	·	·	2042	202	·	·	800
47 · · ·	21569	99 ·		·	·	5960	151	·	·	2003	203	·	·	787
48 · · ·	20997	100		·	·	5826	152	·	·	1965	204	·	·	774
49 · · ·	20442	101		·	·	5696	153	·	·	1927	205	·	·	761
50 · · ·	19903	102		·	·	5569	154	·	·	1890	206	·	·	749
51 · · ·	19381	103		·	·	5446	155	·	·	1855	207	·	·	737

June 2008

Page 25

			SCCG50 & SCCP50
			Service Manual
	Service Diagnosis
	No Ice
	Problem	Likely Cause	Probable Solution
	No power to unit	Power disconnected	Check breaker or fuse. Reset or
			replace, restart and check
	No power to controller	Transformer open	Replace transformer
	Control panel open	Switch failure	Test ribbon cable, see page 32
	Shut down on maximum
	water fill time - water light	Water shut off	Restore water supply
	flashing
		Water leak	Check curtain, sump
		Dirty condenser	Clean condenser
		Restricted location, intake air too	Eliminate restriction, have machine
		hot or blocked	moved
		Evaporator thermistor not sensing	Check thermistor
		properly
	Very long freeze cycle	Spray jets dirty	Remove spray platform and clean
			spray jets
		Inlet water valve leaks through	Check inlet water valve
		during freeze
		Low on refrigerant	Check cube formation,
			Check for bleed thru from missing /
		Connected to hot water	broken check valve in building
			water supply
		Spray pump not pumping	Check pump motor
		Fan motor not turning	Check fan motor, check fan blade,
			check controller for voltage output
		Pump hose disconnected	Check hose
			Add access valve, add refrigerant
		Very low on refrigerant	as a test. If unit makes ice, find and
			correct leak.
			Check compressor start
	Cannot make ice		components, check PTCR
		Compressor not operating	resistance and temperature
			Check compressor voltage
			Check compressor windings
		Hot gas valve leaks through during	Check hot gas valve for hot outlet
		freeze	during freeze
			Check compressor amp draw, if low
		Compressor inefficient	and all else is correct, change
			compressor
		January 2012
		Page 26