Table of Contents
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Introduction
To the owner or user: This service manual is
intended to provide you, and the maintenance or
service technician, with the information needed to
install, start up, clean, maintain and repair this
product.
The SLC400 is an ice machine that produces
cubed ice on 6 vertical cube freezing surfaces.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limitations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
General
Bin
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SLD dispenser . . . . . . . . . . . . . . . . . . . . . . . . . .
RS or IS dispenser . . . . . . . . . . . . . . . . . . . . . . . .
Plumbing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Final Check List
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Location
Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Sequence
Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water/ Refrigeration Schematic . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Characteristics
Service Diagnosis
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Replacement
Parts lists and wiring diagrams are located in the center of this manual, printed on yellow paper.
Note the warning symbol where it appears in this
manual. It is an alert for important safety
information on a hazard that might cause serious
injury.
Keep this manual for future reference.
This manual was printed on recycled paper.
Table of Contents
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When harvested, the cubes fall individually into the
ice storage bin. The SLC400 automatically
maintains the level of ice by turning on when the
ice level falls, and switches off when the bin is full.
The refrigeration system uses R-502 as the
refrigerant.
November 1994
Page 1
SLC400
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page 3
page 4
page 5
page 6
page 7
page 8
page 9
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page 11
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page 13
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page 18
page 19
page 21
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Summary of Contents for Scotsman SLC400
- Page 1 The SLC400 is an ice machine that produces cubed ice on 6 vertical cube freezing surfaces. Specifications ....... .
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Page 2: Specifications
If recharging, always use the charge listed on the ice machine. Specifications: The SLC400 will stack onto a variety of ice storage bins, see sales literature for proper ice storage bin. There is an optional stainless steel panel kit, SPKSLC, for this machine. - Page 3 They meet or exceed the standards of UL, NSF, and CSA. 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 part and/or other components not specifically approved by Scotsman.
- Page 4 It must be installed indoors, in a controlled environment. The air and water temperatures must not exceed rated limits. Pre-installation: 1. Inspect the place where the ice machine is to be installed. Check for: space for the cabinet, water supply, drain availability and electrical power supply.
- Page 5 5. If on a Scotsman bin, attach the ice machine to the bin using the straps and bolts shipped with the ice machine. Drill two 1/8" holes in the back of the bin and secure with sheet metal screws provided.
- Page 6 SLC400 Installation: SLD150 Hotel Dispenser Assembly The ice machine must be placed onto the top of the dispenser, and the bin thermostat capillary tube routed into the bracket in the dispenser. 1. Check that the dispenser has a gasket all around the perimeter of the top, 22"...
- Page 7 Installation: Scotsman IS or RS Dispenser Assembly: The assembly of the ice machine onto the dispenser requires two additional parts: an adapter kit and a thermostat stand off kit. 1. Mark two spots on the inside left liner of the dispenser: 2"...
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Page 8: For The Plumber
SLC400 Installation Supply: Screw the 3/8" male flare (fitting shipped in package inside cabinet) into the 1/4" FPT fitting at the back of the cabinet (thread tape recommended). Connect cold potable water to the water inlet. A hand shut off valve for inlet water should be installed near the machine. -
Page 9: For The Electrician
A ground screw is provided in the junction box. Hand Disconnect Switch For The Electrician Follow All Local Codes - This Unit Must Be Grounded. Usually a licensed electrician will be required to connect the electrical service. Junction Box November 1994 Page 9 SLC400... -
Page 10: After Utility Connections
Scotsman. 12. Has the owner/user been given the name and telephone number of the authorized Scotsman Service Agency serving that location? January 1993 Page 10... -
Page 11: Component Location
& Strainer Drain Elbow Component Location Control Box Detail Ice Size Thermostat Compressor Relay Ice Thickness Control Water Pump November 1994 Page 11 SLC400 Contactor High Pressure Cut Out Harvest Relay Thermostat Ice/Off/Wash Switch Control Box Bin Thermostat ICE/OFF/WASH Switch... -
Page 12: Initial Start Up
10. The water temperature in the reservoir will soon be 32 F., and ice should begin to form on the evaporators. 11. Allow the ice machine to operate for about Correct Size & 11 16 " 15-20 minutes. The ice should be fully formed and Shape should be harvested within a few minutes. - Page 13 1. After ice has been harvested, but before new cubes begin to form, switch the ICE/OFF/WASH switch to WASH. 2. Add 4 oz. of ice machine cleaner to the reservoir. Allow unit to operate that way for 10 minutes. 3. Switch ICE/OFF/WASH switch to OFF 4.
- Page 14 2. Wipe all interior surfaces of the ice storage bin with the bleach and water. 3. Allow to air dry. To Remove Scale: 1. Mix a cleaning solution of 4 ounces of Scotsman Ice Machine Cleaner to 4 pints of warm F.-110 F.) water.
- Page 15 5. Drain the water from the sump by removing the drain elbow. 6. Disconnect hose from the water distributor pan, and remove the water distributor pan. 7. Mix a solution of 5 oz. ice machine cleaner and 1 gallon of warm (95 F. - 115 F.) water.
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Page 16: Refrigeration Schematic
Valve Water Reservoir Water Schematic: Water flows into the ice machine from its inlet connection at the back of the cabinet, through the inlet water valve and into the reservoir. The water in the reservoir is pumped up and through the water distributor tube at the top of the evaporators. -
Page 17: Harvest Cycle
Hot Gas Valve (Open) Thermostatic Expansion Valve Suction Line Compressor Siphon Tube (Draining) November 1994 Page 17 SLC400 Discharge Line Condenser Fan Motor (Off) Dryer Refrigeration Schematic... -
Page 18: Technical Characteristics
SLC400 Technical Characteristics Typical Cycle Time 16 minutes @ 90 F. air and 70 Typical Harvest Ice Weight 3.6 pounds . Typical Low Side Pressure 18-20 PSIG just before harvest Typical Freeze Cycle Discharge Pressure 190 - 240 PSIG @ 70 F. -
Page 19: Service Diagnosis
No cooling at evaporator due to dirty condenser No cooling due to compressor not pumping November 1994 Page 19 SLC400 PROBABLE FIX Restore power Switch ICE/OFF/WASH switch to Check temperature at bin thermostat bracket, if warmer than F., thermostat should be closed. - Page 20 SLC400 Service Diagnosis: SYMPTOM No ice compressor is operating Ice is made, but not harvested. POSSIBLE CAUSE No cooling due to low refrigerant charge Ice size thermostat contacts do not switch position Ice will not slide down ice rack due to minerals on rack.
- Page 21 Adjust ice size thermostat; use gauge shipped with machine Check/replace heater on ice size thermostat probe tube. Clean water system with Scotsman Ice Machine Cleaner Clean tube with ice machine cleaner Check water supply pressure Check water supply for restrictions Check superheat, replace TXV if too high.
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Page 22: Removal And Replacement
SLC400 Removal and Replacement Ice Size Thermostat: Before replacing the ice size thermostat, it should be positively determined that it is at fault. 1. Disconnect electrical power. Electrical shock hazard. Electrical shock can cause personal injury. Disconnect power before beginning to service components. - Page 23 3. Remove the screws holding the valve bracket to the liner. 4. Remove the valve from the ice machine. 5. Reverse the above steps to reassemble. Shut Off Valve Inlet Water Valve &...
- Page 24 There are various mechanical devices that may be used to recycle refrigerant at the field level, however, Scotsman requires that any refrigerant placed into a Scotsman ice machine meet ARI spec 700. Reclaim programs are available through most refrigerant wholesalers.