Table of Contents
Advertisement
Quick Links
INTRODUCTION
To the owner or user: The service manual you are
reading is intended to provide you, and the
maintenance or service technician with the
information needed to install, start up, clean,
maintain, and service this ice maker-dispenser.
This machine is a combination nugget ice maker
and countertop dispenser, with the option of wall
mounting.
FOR THE INSTALLER: Specifications · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2
FOR THE INSTALLER: Environmental Limitations · · · · · · · · · · · · · · · · · · · · · · · · Page 3
FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 4
FOR THE INSTALLER: Wall Mount Kit · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 5
FOR THE PLUMBER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 6
FOR THE ELECTRICIAN · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 7
FOR THE INSTALLER: Final Check List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 8
INITIAL START UP · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 9
COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 10
COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 11
COMPONENT DESCRIPTION: Control Box · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 12
ELECTRICAL SEQUENCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 13
OPERATION: Water · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 14
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 15
OPERATION: Ice Vending · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 16
CLEANING and SANITIZING · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 17
SENSOR MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 18
BEARING MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 19
AUGER MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 20
SERVICE DIAGNOSIS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 21
SERVICE DIAGNOSIS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 22
CONTROL SYSTEM DIAGNOSTICS
REMOVAL AND REPLACEMENT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 24
REMOVAL AND REPLACEMENT: Bearing And Breaker · · · · · · · · · · · · · · · · · · · · Page 25
REMOVAL AND REPLACEMENT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 26
REMOVAL AND REPLACEMENT: Water Seal · · · · · · · · · · · · · · · · · · · · · · · · · · Page 27
REMOVAL AND REPLACEMENT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 28
TO REMOVE AND REPAIR THE GEARMOTOR ASSEMBLY · · · · · · · · · · · · · · · · · · Page 29
REFRIGERATION SERVICE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 30
The ice making section is equipped with the
following features: electronic controls for bin level
and low water; thermostatic expansion valve; front
service for most components; and R-404A (HP62)
refrigerant. The ice dispensing section is a
seamless plastic storage bin, with a stainless steel
rotating vane to sweep the ice into the dispensing
chute.
Table of Contents
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 23
March 2000
Page 1
NDE554 & NDE654
Note this symbol when it appears.
It marks a possible hazard.
Advertisement
Table of Contents
Related Manuals for Scotsman NDE554
Summary of Contents for Scotsman NDE554
- Page 1 INTRODUCTION To the owner or user: The service manual you are reading is intended to provide you, and the maintenance or service technician with the information needed to install, start up, clean, maintain, and service this ice maker-dispenser. This machine is a combination nugget ice maker and countertop dispenser, with the option of wall mounting.
-
Page 2: For The Installer: Specifications
FOR THE INSTALLER: Specifications This ice maker-dispenser is designed to be mounted on a machine stand, or a countertop, or using wall mounting kit KWB3, hung from a wall. The sink may be retained, or removed and the optional longer splash panel (KSP1B) installed in place of the original. -
Page 3: For The Installer: Environmental Limitations
They meet or exceed the standards of UL, NSF, and CUL. 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: For The Installer
Counter Top or Machine Stand Installation The base of the icemaker-dispenser must be sealed to the object it rests upon. Food grade silastic sealant such as Scotsman part number 19-0529-01 is recommended. Place a bead of the sealant on the machine stand or counter top to match the outside edge of the cabinet base and sink. -
Page 5: For The Installer: Wall Mount Kit
12" 1" CLEARANCE X" 7.58 X = 30" for NDE554 X = 38.6" for NDE654 DO NOT LIFT ON SINK 2. Mount brackets “B” and “C” to the wall at the dimensions shown for the unit. (hardware for this is not included). -
Page 6: For The Plumber
FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet Air Cooled Models: Connect a potable, cold water supply to the 3/8" male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply. 3/8" O.D. copper tubing is recommended. -
Page 7: For The Electrician
NDE554 & NDE654 FOR THE ELECTRICIAN CONFORM TO ALL APPLICABLE CODES Connect the electrical power to the unit to the power leads in the junction box at ELECTRICAL the rear of the machine. POWER Check the nameplate (located on the... -
Page 8: For The Installer: Final Check List
NDE554 & NDE654 FOR THE INSTALLER: Final Check List 1. Is the icemaker-dispenser installed indoors, in a BACK VIEW OF COMPLETED INSTALLATION location where the air and water temperatures are ELECTRICAL? controlled, and where they do not go beyond design limitations? 2. -
Page 9: Initial Start Up
Make sure they know who to call for service. 10. Fill out the Customer Evaluation and Warranty Registration form, and mail it in to Scotsman. March 2000 Page 9... -
Page 10: Component Description
Glass Filler Lever: Pushing in on this lever causes the ice dispensing cycle to occur. Low Pressure Cut Out Switch: An automatic reset control that shuts off the ice machine when the low side pressure drops below a preset point, 15 psig. -
Page 11: Component Description
COMPONENT DESCRIPTION Evaporator: A refrigerated vertical tube filled with water and containing a water seal and auger. Auger: A solid stainless steel double spiral auger, it pushes the ice crystals up to the top of the evaporator. Water Seal: A two part “face” seal, the top half rotating with the auger, the bottom half stationary, the sealing action being where the two seal “faces”... -
Page 12: Component Description: Control Box
NDE554 & NDE654 COMPONENT DESCRIPTION: Control Box Contactor: A definite purpose contactor connecting the compressor to the power supply. Control Board: Controlling the ice machine through sensors and relays. The sensors are for ice level and water level. The relays are for the... -
Page 13: Electrical Sequence
The compressor will not restart until 2 minutes or more have passed after the last shut down. If the path between the ice level sensors remains clear for more than 10 seconds the ice machine will restart. Control Board Protection Devices ·... -
Page 14: Operation: Water
OPERATION: Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, goes to the water reservoir which it enters through the float valve. The water then goes out the bottom of the reservoir tank to the bottom of the evaporator. Reservoir overflow, evaporator condensation, bin drainage and water from the sink are all routed to a common drain. -
Page 15: Operation: Refrigeration
OPERATION: Refrigeration Beginning at the compressor, the refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser. At the condenser (air or water cooled) the gas is cooled by either air or water and it then condenses into a liquid. -
Page 16: Operation: Ice Vending
NDE554 & NDE654 OPERATION: Ice Vending When the ice dispensing glass filler lever is pushed, an electrical circuit is made the dispense drive motor which turns, rotating the dispensing vane. When the dispensing vane sweeps the ice over the ice dispensing chute ice is released from the bin. -
Page 17: Cleaning And Sanitizing
CLEANING and SANITIZING A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. It is the USER’S RESPONSIBILITY to see that the unit is properly maintained. It is always preferable, and less costly in the long run, to avoid possible down time by keeping it clean;... -
Page 18: Sensor Maintenance
BIN CONTROL SENSOR 2. The ice machine senses water level by a probe located in the water reservoir. At least twice a year, the probe should be removed from the reservoir, and the tip wiped clean of mineral build-up. -
Page 19: Bearing Maintenance
If the bearing only needs grease, inject grease into Ice Sweep the bearing using Scotsman grease needle pn 02-3559-01 and Scotsman bearing grease cartridge, pn A36808-001. Be sure to inject grease evenly and thoroughly. -
Page 20: Auger Maintenance
NDE554 & NDE654 AUGER MAINTENANCE In some areas, the water supply to the ice maker ALLEN will contain a high concentration of minerals, and HEAD that will result in an evaporator and auger SCREWS becoming coated with these minerals, requiring a more frequent removal than twice per year. -
Page 21: Service Diagnosis
(air cooled). Auger can’t turn. Circuit board has not yet shut unit down. Circuit board has shut ice machine down due to high auger motor amp draw. Check for cause of high amp draw, including bearings, gearmotor condition and scale on auger and in evaporator. -
Page 22: Service Diagnosis
Weigh in correct charge. Acid clean water cooled condenser. Clean out bin drain. Drains must be separate. Adjust or replace Clean with Scotsman Ice Machine Cleaner Oil or replace motor Check / replace switch Check bin, check ice machine section... -
Page 23: Control System Diagnostics
If it is on, the ice sensors may be blocked. Remove them and check for mineral scale. Scotsman's test box can also be used to determine if the ice sensors or board are defective. -
Page 24: Removal And Replacement
REMOVAL AND REPLACEMENT WATER RESERVOIR 1. Shut off the water supply to the icemaker. 2. Remove front panel and reservoir cover. 3. Disconnect inlet water line from valve. 4. To remove just the float, push the locking tab at the back of the valve mounting block in and lift the valve and block up and out of the reservoir tank. -
Page 25: Removal And Replacement: Bearing And Breaker
7. Reverse to reassemble: specific tools and materials are required to install properly. a. Add food grade grease such as Scotsman part number 19-0569-01 to the seal area before installing on the auger. b. Check the seal to shaft areas for cuts, or rough spots: none are permitted. -
Page 26: Removal And Replacement
Scrub the auger with ice machine cleaner and hot water. Ice machine cleaner is an acid. Handle it with extreme care, keep out of the reach of children. 2. The water seal area. Because the auger has been removed, the water seal will have to be replaced. -
Page 27: Removal And Replacement: Water Seal
4. Place a small bead of food grade silastic sealant (such as 732 RTV or Scotsman part number 19-0529-01) on the area of the auger where the water seal is to be mounted. -
Page 28: Removal And Replacement
REMOVAL AND REPLACEMENT To Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) 1. Discharge the refrigerant from the ice maker. 2. Unsweat the refrigerant connections: a) At the thermostatic expansion valve outlet. Heat sink the TXV body when unsweating or resweating the adjacent tubing. -
Page 29: To Remove And Repair The Gearmotor Assembly
TO REMOVE AND REPAIR THE GEARMOTOR ASSEMBLY (Assuming that the procedures through removal of the water seal have been performed.) Electrical Shock Hazard. Disconnect electrical power to the icemaker - dispenser before beginning. To Check the Motor: 1. Remove wires from terminals 1 and 2. 2. -
Page 30: Refrigeration Service
R-404A Tank Must 11. Shut the low side access valve on the ice Be in Liquid machine. Dispensing 12. Remove hoses from ice machine and replace Position - all caps. Check Tank! SCALE March 2000 Page 30...