Related Manuals for Hoshizaki VALIANCE VSR48A
Summary of Contents for Hoshizaki VALIANCE VSR48A
- Page 1 Service Manual VSR27A VSR48A Number: MAN-399-R-01 Issued: 07-03-2024 Revised: 01-24-2025...
- Page 2 Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, send an e-mail message, or write to the Technical Support Department for assistance. Phone: (800) 227-3172 E-mail: tech-support@hoshizaki.com 618 Highway 74 South Peachtree City, GA 30269 USA Attn: Technical Support Department Web Site: www.hoshizakiamerica.com...
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Page 3: Table Of Contents
IMPORTANT This manual should be read carefully before the appliance is serviced. Read the warnings and guidelines contained in this booklet carefully as they provide essential information for the continued safe use, service, and maintenance of the appliance. Retain this booklet for any further reference that may be necessary. Contents Important Safety Information .................... -
Page 4: Important Safety Information
Important Safety Information Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, damage to the appliance, or damage to property. Indicates a hazardous situation that, if not avoided, will result in DANGER death or serious injury. - Page 5 WARNING This appliance should be destined only to the use for which it has been expressly conceived. Any other use should be considered improper and therefore dangerous. The manufacturer cannot be held responsible for injury or damage resulting from improper, incorrect, and unreasonable use. Failure to install, operate, and maintain the appliance in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage.
- Page 6 WARNING, continued • The appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. •...
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Page 7: General Information
I. General Information A. Construction Tray NSF compliant interior 430 stainless steel exterior cabinet cabinet, top, interior bottom and interior rear wall Solid door for improved insulation and higher energy Heavy duty hinges with efficiency automatic return Heavy duty R-290 Reinforced, 16 gauge, condensing appliance with galvanized steel base... -
Page 8: Refrigeration Circuit
B. Refrigeration Circuit... -
Page 9: Sequence Of Operation And Service Diagnosis
II. Sequence of Operation and Service Diagnosis A. Sequence Flow Chart 1. Refrigerator VSR27A... -
Page 10: Refrigerator Vsr48A
2. Refrigerator VSR48A... -
Page 11: Service Diagnosis
B. Service Diagnosis Risque De Feu Ou D'Explosion DANGER Le Frigorigène Est Inflammable Risk of Fire or Explosion • Suivre attentivement les instructions Flammable Refrigerant Used de manipulation conformément à la • Follow handling instructions carefully réglementation gouvernementale. in compliance with U.S. government •... - Page 12 NOTICE • Normal operating ambient temperature range is from 45°F to 100°F (7°C to 38°C). • Ventilation is required from the bottom front of the appliance. Keep this area open and clear of any obstructions. Adjacent cabinets and counter top can be installed around the appliance as long as the front grille remains unobstructed.
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Page 13: Troubleshooting
1. Troubleshooting Check for correct appliance installation per the instruction manual and proper voltage per appliance nameplate. a) Not Cooling Not Cooling - Possible Cause 1. Power Supply a) Unplugged, off, blown fuse, tripped or defective circuit breaker. On three-section receptacle box, only top receptacles have power. - Page 14 b) Too Much Cooling Too much cooling - Possible Cause 1. Cabinet Thermistor a) Defective. c) Extreme Condensation Extreme condensation - Possible Cause 1. Cabinet Thermistor a) Loose. b) Installed improperly. 2. Door a) Do not shut completly (Defective gasket or hinges not adjusted).
- Page 15 g) Alarm Safeties 1. Control module 1. Led 1 (GREEN): Shows the instrument status: ON = Instrument in Eco mode; Flashing = Instrument in Normal mode. 2. Led 2 (RED): Indicates the status Alarm/Standby: ON = Powered, but in standby status; Flashing = Alarm active.
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Page 16: Control Module Check
C. Control Module Check VSR27A, VSR48A Control module Before replacing a CM that does not show a visible defect and that you suspect is bad, conduct the following check procedure. This procedure will help you verify your diagnosis. Confirm there is a good 115VAC power supply and neutral connection to the CM. Always choose a neutral white wire (W) to establish a good neutral connection when checking high voltages. -
Page 17: Thermistor Check
D. Thermistor Check The cabinet thermistor is used for cabinet temperature control. Thermistor resistance varies depending on temperature. The control module monitors the thermistors to control system operation. No adjustment is required. The defrost initiation occurs every 6 hrs. of real time. To check thermistor resistance, follow the steps below: 1. -
Page 18: Vsr48A
2. VSR48A Control module Marking 1 Cut-In/Cut-out: 34.2 40.2 Marking 2 Cut-In/Cut-out: 33.8 39.8 Marking 3 Cut-In/Cut-out: 33.3 39.3 Marking 4 Cut-In/Cut-out: 32.8 38.8 Marking 5 Cut-In/Cut-out: 32.3 38.3 Marking 6 Cut-In/Cut-out: 31.8 37.8 Marking 7 Cut-In/Cut-out: 31.2 37.2 Marking 8 Cut-In/Cut-out: 30.8 36.8 Marking 9 Cut-In/Cut-out:... -
Page 19: Refrigeration Circuit And Component Service Information
III. Refrigeration Circuit and Component Service Information DANGER Risk of Fire or Explosion Flammable Refrigerant Used • Follow handling instructions carefully in compliance with U.S. government regulations. • Do not use mechanical devices to defrost. • Do not puncture refrigerant tubing. Risk of fire or explosion due to puncture of refrigerant tubing;... - Page 20 WARNING • Wear appropriate personal protective equipment (PPE) when servicing the appliance. • Technician must utilize a combustible gas leak detector at all times. • Notify everyone in the immediate area that you are working with flammable refrigerant. • Do not work on appliance in a confined space. Confirm area is well ventilated. •...
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Page 21: Service For Refrigerant Lines
A. Service for Refrigerant Lines WARNING • Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA-certified service personnel. • Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). - Page 22 2. Brazing DANGER Risk of Fire or Explosion Flammable Refrigerant Used • Servicing shall be done by factory authorized service personnel to minimize the risk of possible ignition due to incorrect parts or improper service. Risque De Feu Ou D'Explosion Le Frigorigène Est Inflammable •...
- Page 23 3. Evacuation 1) Attach a vacuum pump to the system. Be sure to connect the charging hoses to both high and low-side refrigerant piercing valves. IMPORTANT The vacuum level and vacuum pump may be the same as those for current refrigerants.
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Page 24: Maintenance
B. Maintenance WARNING • Unplug the appliance before performing maintenance to prevent electric shock or injury by moving parts. • Before performing maintenance, move all foods into another clean refrigerator. 1. Condenser Check the condenser once a year and use a brush or vacuum cleaner to clean the condenser as required. -
Page 25: Preparing The Appliance For Periods Of Non-Use
IV. Preparing the Appliance for Periods of Non-Use WARNING • When preparing the appliance for long storage, prevent the doors from closing to reduce the risk of children getting trapped. • To reduce the risk of electric shock, do not touch the attachment plug with damp hands. -
Page 26: Disposal
V. Disposal DANGER Risk of Fire or Explosion Flammable Refrigerant Used • Follow handling instructions carefully in compliance with U.S. government regulations. • Do not puncture refrigerant tubing. Risk of fire or explosion due to puncture of refrigerant tubing; follow handling instructions carefully. •... -
Page 27: Technical Information
VI. Technical Information We reserve the right to make changes in specifications and design without prior notice. A. Electrical and Refrigerant Data See the nameplate for electrical and refrigerant data. The nameplate is located inside the cabinet. Electrical and Refrigerant Data Design Pressure (PSIG) Refrigerant (oz.) Model AC Supply Voltage Amperes... -
Page 28: Wiring Diagram
B. Wiring Diagram Model Run Capacitor Starting Capacitor VSR27A 12 μF 180 V it does not use... - Page 29 Model Run Capacitor Starting Capacitor VSR48A 20 μF 180 V it does not use...
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