Hussmann microSC VRL Installation & Operation Manual

Hussmann microSC VRL Installation & Operation Manual

Low temperature self contained glass door merchandisers

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Æ
VRL
(120V)
Low Temperature Self Contained
Glass Door Merchandisers
with R-290 Refrigerant
WARNINGS:
If the information in these instructions are not followed
exactly, a fire or explosion may result, causing property
damage, personal injury or death.
Installation and service must be performed by a qualified
installer or service agency.
READ THE ENTIRE MANUAL BEFORE
INSTALLING OR USING THIS EQUIPMENT.
The unit uses R-290 gas as the refrigerant. R-290 is
flammable and heavier than air. It collects first in low
areas but can be circulated by the fans. If propane gas
is present or even suspected, do not allow untrained
personnel to attempt to find the cause. The propane
gas used in the unit has no odor. The lack of smell does
not indicate a lack of escaped gas. If a leak is detected,
immediately evacuate all persons from the store, and
contact the local fire department to advise them that
a propane leak has occurred. Do not let any persons
Installation &
back into the store until the qualified service technician
has arrived and that technician advises that it is safe to
Operation Manual
return to the store. No open flames, cigarettes or other
possible sources of ignition should be used inside or in
the vicinity of the units.
FAILURE TO ABIDE BY THIS WARNING COULD
RESULT IN AN EXPLOSION, DEATH, INJURY AND
P/N 3155541_C
PROPERTY DAMAGE.
April 2022
IMPORTANT
Keep in store for future reference!
Spanish 3155542
MANUAL - SELF CONTAINED R290 VRL 120V I/O

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Summary of Contents for Hussmann microSC VRL

  • Page 1 Æ (120V) Low Temperature Self Contained Glass Door Merchandisers with R-290 Refrigerant WARNINGS: If the information in these instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death. Installation and service must be performed by a qualified installer or service agency.
  • Page 2: Before You Begin

    • Component parts are designed for propane and non-incendive and non-sparking. Component parts shall only be replaced with identical repair parts. FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 3 KEEP IN STORE FOR FUTURE REFERENCE Quality that sets industry standards! 12999 St. Charles Rock Road • Bridgeton, MO 63044-2483 U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 www.hussmann.com © 2022 Hussmann Corporation VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 4: Ansi Z535.5 Definitions

    Indicates[s] situations, which if not avoided, could result in damage to equipment. Case ventilation openings must be clear of any obstructions. Do not damage the refrigerant circuit. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 5: Installation

    This equipment has been carefully inspected at our factory. Any claim for loss or damage must be made to the carrier. The carrier will provide any necessary inspection reports and/or claim forms. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 6 Air Exhaust Zero Clearance Zero clearance required on sides at Sides and Rear 1-inch clearance at TOP and REAR 36 in. Clearance 36 in. Clearance at at Front Front PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 7: Exterior Loading

    Determine the highest part of the floor. Case ventilation openings must be clear of any obstructions. Do not damage the refrigerant circuit. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 8: Model Description

    Choose a level area to install case. These cases have adjustable leg leveler at center front and back. Turn the leg levelers clockwise to add length to each leg for leveling. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 9 Make sure the adjustable wrench used has a minimum opening of 2 16" CASTERS CASTERS 83.19" 83.19 83.19 (1-door model shown) Case height is the same for 1, 2 and 3-door case models VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 10 PROJECTION SHEET 15 OF 15 Light Switch Light Switch 11/29/2021 (1-door model shown) light switch location is in similar location for all models - righthand side of the fan plenum PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 11: Load Limits

    Air flow Load Limit for VRL 54.75 Merchandisers SECTION A-A UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. THIRD ANGLE PROJECTION SHEET 3 OF 12...
  • Page 12 LEGAL DISCLAIMER: Hussmann shall not be liable for any repair or replacements made without the written consent of Hussmann, or when the product is installed or operated in a manner contrary to the printed instructions covering installation and service which accompanied such product.
  • Page 13 This includes, 2. KEY PRODUCT CHARACTERISTICS PER EPR-0006 & IDENTIFIED WITH SYMBOL but is not limited to, such items as doors, lights, fans, heaters, 3. MATERIAL- 4. REF - and thermostats. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 14 AS CENTER OR RIGHT UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. THIRD ANGLE PROJECTION SHEET 12 OF 16 ELECTRICAL BOX 2 & 3 DOOR LOCATION MARKED IN TABLE AS CENTER OR RIGHT PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 15 CHECK VALVE HGSV PRESSURE CONDENSATE PAN SWITCH COMPRESSOR UNLESS OTHERW VRL Merchandisers DIMENSIONS AR HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. E STANDARDS / SPECIFICATIONS M-1994, DIMENSIONS AND TOLERANCES UCT CHARACTERISTICS PER EPR-0006 & IDENTIFIED WITH SYMBOL Error: No reference...
  • Page 16 CAP TUBE CHECK VALVE CONDENSER HGSV PRESSURE CONDENSATE PAN SWITCH COMPRESSOR UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. 06 & IDENTIFIED WITH SYMBOL THIRD ANGLE PROJECTION SHEET 3 OF 4 PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 17 (This diagram is applicable for both 1 and 2-door case models) FILTER CAP TUBE DRIER CHECK VALVE HGSV PRESSURE CONDENSATE PAN SWITCH COMPRESSOR UNLESS OT DIMENSIO LERANCES EPR-0006 & IDENTIFIED WITH SYMBOL VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SHEE...
  • Page 18 FILTER DRIER CAP TUBE CHECK VALVE CONDENSER HGSV PRESSURE CONDENSATE PAN SWITCH COMPRESSOR UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. DENTIFIED WITH SYMBOL THIRD ANGLE PROJECTION SHEET 4 OF 4 PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 19 Do not let any persons back into the store cleared from the area and from the refrigeration until the qualified service technician has arrived systems. and that technician advises that it is safe to return to the store. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 20 6. Once recovered, close the tank valve and remove the guage from the tank and connect nitrogen tank to the system to purge it with nitrogen. 7. Pull vacuum to a minimum of 200 microns or lower. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 21 ELECTRICAL BOX MICROCHANNEL CONDENSER SOLENOID VALVES (1-door case shown) SECTION D-D VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. & IDENTIFIED WITH SYMBOL THIRD ANGLE PROJECTION SHEET 7 OF 12...
  • Page 22 4.50 ROOF TO SENSOR DETAIL B VRL1B1A AIR DISCHARGE SENSOR CENTERED BETWEEN SIDES OF THE CASE 14.87 INTERIOR TOP PANEL 4.50 ROOF TO SENSOR DETAIL B SECTION A-A SECTION A-A PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 23 PN_3155541_C DISCHARGE SENSOR LOCATION VRL2B1A INTERIOR TOP PANEL 25.69 AIR DISCHARGE SENSOR 23.75 FROM INTERIOR RIGHT PANEL 4.50 ROOF TO SENSOR SECTION C-C VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 24 DISCHARGE SENSOR LOCATION VRL3B1A 21.94 20.00 Air Discharge Sensor FROM INTERIOR RIGHT PANEL 4.50 SECTION D-D UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. INSTR PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com R LOC THIRD ANGLE PROJECTION...
  • Page 25 PN_3155541_C DEFROST SENSOR LOCATION DEFROST SENSOR IS LOCATED BELOW EVAPORATOR OUTLET TUBE (APPLIES FOR VRL1B1A, VRL2B1A, VRL3B1A) DETAIL C EVAP OUTLET EVAP INLET CAPILLARY TUBE CHECK VALVE HOT GAS LINE VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 26 BOX FIXED ON RIGHT SIDE OF THE CASE SLIDE ELECTRICAL BOX TO FRONT OF THE CASE UNSCREW COVER TO ACCESS COMPONENTS RIGHT VIEW ELECTRICAL BOX LOCATED ON THE RIGHT SIDE OF THE CASE PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 27 LOCATION ON THE FRONT OF THE CASE PROVIDES ACCESIBILITY TO ELECTRICAL COMPONENTS WITHOUT THE NEED TO UNSCREW THE BOX LOCATED UNSCREW COVER TO ACCESS COMPONENTS VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. THIRD ANGLE...
  • Page 28 COMPONENTS WITHOUT THE NEED TO UNSCREW THE BOX UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. ATIONS D TOLERANCES PN_3155541_C PER EPR-0006 & IDENTIFIED WITH SYMBOL U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com THIRD ANGLE PROJECTION SHEET 3 OF 3...
  • Page 29 7° F and -6° F (evaluated under ASHRAE 72 method). SECTION A-A UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. THIRD ANGLE PROJECTION SHEET 3 OF 12 VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 30 When the instrument is powered on it performs a lamp test, during which time the display and LEDs will flash for several seconds to check that they all function correctly. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 31: Kdeplus Buttons

    When pressed during (if active) Opens the Programming Menu start-up it enables (User and Installer parameters) the user to select the • Opens Machine Status menu • Confirms commands application to be loaded. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 32 Deep cooling cycle • Opens Machine Status menu (User and Installer parameters) the user to select the Start/end defrost • Confirms commands application to be loaded. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com RTN400 Page 21/130...
  • Page 33: Maintenance

    AbrAsive cleAners or scouring pAds ever use cAustic sodA kerosene gAsoline thinner solvents detergents Acids chemicAls or AbrAsives o not use AmmoniA bAsed cleAners on Acrylic pArts VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 34 ’ interior hese destroy merchandiser sealing causing leaks and poor performance • Take care to minimize direct contact between fan motors and cleaning or rinse water. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 35: Cleaning Condenser Coils

    2. KEY PRODUCT CHARACTERISTICS PER EPR-0006 & IDENTIFIED WITH SYMBOL Condensing unit view for 2-door and 3-door models are shown 3. MATERIAL- 4. REF - on the next page. SHEET Front Grille VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 36 2. KEY PRODUCT CHARACTERISTICS PER EPR-0006 & IDENTIFIED WITH SYMBOL THIRD VRL3B1A Condensing units 3. MATERIAL- ANGLE PN_3155541_C 4. REF - U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com PROJECT SHEET 1 OF 3 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES.
  • Page 37: Tips And Troubleshooting

    Are the standard shelves in the correct places? Is the product stocked properly? Is the bottom shelf at the proper location? 6. Confirm that the defrost schedule is properly set. Adjusting Closing Torque VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 38 4 are replaceable, we recommend that a severely clicks. If the torque cam and hinge socket are rusted torque rod assembly be replaced. severely rusted, both components should be replaced. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 39 5. If a door passes the three “open / close” tests, and there is no excessive movement at the top hinge pin, then it is highly unlikely that any components require replacement. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 40 Confirm door switches function. Verify unit doors and lids work and are sealed correctly. Verify that all the panels, shields and covers are in place. Technician Notes: Form HSCW03 Rev-29 OCTOBER13 PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 41 3. Replace the LED with like fixture. 5. Replace the LED with like fixture, and re-attach connection. 6. Replace the display panel cover. 7. Return power to the merchandiser. 4. Return power to the merchandiser. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 42 Figure D Figure C Figure F Figure F Figure F Figure E Figure F Figure E Figure E Figure G Figure E Figure E Figure G Figure G Figure G PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 43 Wiring diagrams are shown on the last pages of this manual. After covers are reinstalled, turn power on and verify that heaters are working properly. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 44 1. Remove product and place in a refrigerated area. Make sure the power is off to the case. 2. Make sure there is no voltage in the refrigerator. Remove rear lower panel as shown below. REMOVE CONDENSING UNIT STOPPER VRL3B1A Shown PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 45 4. Disconnect inverter harness and ground. 5. Take off the inverter screws. 6. Replace inverter with the new one. 7. Reverse the process, and make sure screws are hand-tight and everything is working properly. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 46 3. Slide out the condensing unit. Be careful using the condensing unit base to pull it out. Make sure not to stress or interfere with other parts. REMOVE CONDENSING UNIT STOPPER VRL3B1A Shown PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 47 8. Release motor screws to get to motor / blade assembly. 9. Change failed part. 10. If the only damaged part is the motor, remove blade. 11. Reverse the process and make sure everything is in place and working. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 48: Replacing Compressor

    2. Make sure there is no voltage in the refrigerator. Remove lower panels. REMOVE CONDENSING UNIT STOPPER 3VRLB1A Shown 3. Make sure there is no refrigerant left in the system. Refer to Page 2-6 - Steps to Recover Refrigerant. PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 49 5. Slide out the condensing unit completely. Be careful using the condensing unit base to pull it out. Make sure not to stress or interfere with other parts. 6. Disconnect all wires and harness from the compressor. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 50 1. Remove product and place in a refrigerated area. Make sure the power is off to the case. 2. Make sure there is no voltage in the refrigerator. Remove rear lower panel. 3VRLB1A Shown PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 51 5. Remove coil by pulling up and disconnect wires. 6. Release clamps and remove welded joints from the valves. 7. Replace solenoid valves. 8. Reverse the process and make sure everything is in place. VRL Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 52: Technical Information

    Sealed Pressure Switch PN_3155541_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 53 ® To obtain warranty information or other support, contact your Hussmann representative. Please include the model and serial number of the product. Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A.
  • Page 54 Hussmann Corporation 12999 St. Charles Rock Road Bridgeton, MO 63044-2483 www.hussmann.com...

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