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®
Merchandisers
Reach-in Merchandisers
Medium and Low Temperature Cases
Installation &
Operation Manual
Shipped With Case Data Sheets
P/N 0387183_D
Impact Series
October 2007
IIM MPPO ORRTTA AN NTT
Keep in store for
future reference!
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iii P/N 0387183_D Table of Contents INSTALLATION START UP / OPERATION NSF Certification . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Shipping Damage . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Load Limits . . . . . . . . . . . . . . . . . . . . . . . .
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iv CONTENTS REVISION D — SEPTEMBER 2007 INSTALLATION 1. Added front panel text and illustration, Page 1-2. TOOL LIST 2. Clarified shimming directions, page 1-3. 3. Added RLT information throughout. 4. Added note to remove bumper protective film, Page 1-6. Unloading From Trailer: 5. Added information on Always*Clear™ glass, page 5-1. 6. Removed reference to Anthony doors, Page 6-5. Lever Bar (also know as a Mule, 7. Added repairing aluminum coil, Page 6-12. Johnson Bar, J-bar, Lever Doll
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P/N 0387183_D 1-1 INSTALLATION NSF CERTIFICATION These merchandisers are manufactured to meet Product should always be maintained at proper ® ANSI / National Sanitation Foundation (NSF ) temperature. This means that from the time the Standard #7 requirements. Proper installation is product is received, through storage, preparation required to maintain certification. Near the serial and display, the temperature of the product must plate, each case carries a label identifying the be controlled to
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1-2 INSTALLATION EXTERIOR LOADING REMOVE FRONT PANEL (DOES NOT APPLY TO RLT) Do NOT walk on top of merchandisers or dam- age to the merchandisers and serious personal Before setting case, remove the front panel as injury could occur. THEY ARE NOT STRUCTURALLY follows: remove screws from front panel tabs, DESIGNED TO SUPPORT EXCESSIVE EXTERNAL then lift the front panel. Refer to the illustration LOADING such as the weight of a person. Do not below. Set panel and screws aside to reinstall place
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P/N 0387183_D 1-3 LEVELING Approximately Centered Merchandisers must be installed level to ensure proper operation of the refrigeration system and to ensure proper drainage of defrost water. Rear of Reach-in When leveling merchandisers, use a carpenter’s level as shown. Base Component Metal leveling shims or wedges are provided with each merchandiser for use if needed. NOTE: BEGIN LINEUP LEVELING FROM THE HIGHEST POINT OF THE STORE FLOOR. Place shims under the rail and make Base Component s
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1-4 INSTALLATION DOOR ADJUSTMENT INSTALLING SPLASHGUARD BRACKETS After leveling and joining the merchandisers, 1. Attach splashguard retainer and splashguard adjust and level doors according to manufacturer’s retainer support to splashguard support brack- instructions shipped with each product. Factory et using two screws per bracket. settings are lost due to vibration during shipment. Splashguard Retainer Support JOINING Sectional construction means that two or more merchandisers may be joined
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P/N 0387183_D 1-5 INSTALLING BUMPERS Offsetting the bumpers and top rails helps to Do NOT install the last bumper sections at this disguise the joint locations, giving the lineup a time. These sections will be installed in the last smoother look. step. Begin at the left end of the line-up. A starter Once all except the last section of bumper have bumper is factory-installed with end kits. Insert been installed, refrigerate the case line-up for the internal joint trim, then add the full-length a
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1-6 INSTALLATION Remove protective film from bumpers once installation is complete. Optional end bumpers are factory-installed. P/N 0387183_D WWW.HUSSMANN.COM
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P/N 0387183_D 2-1 REFRIGERATION / ELECTRICAL REFRIGERANT The correct type of refrigerant will be stamped on NOTE: If Gas defrost is used, the liquid line each merchandiser’s serial plate which is located will need to be increased two sizes larger inside on the left-hand end of the interior top liner. the merchandiser area. This is necessary to ensure even liquid drainage from all evaporators during defrost. ! WARNING Line Sizing Refrigeration lines are under pressure and Refrigerant lines shoul
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2-2 REFRIGERATION / ELECTRICAL Liquid Line – Off-time and Electric Defrost � May be reduced by one size after one half the CAUTION ! case load run. Do not reduce below evaporator connection size. The following information is applicable only � Take-offs to evaporators exit the bottom of the for piping Hussmann merchandisers to liquid line. Provide an expansion loop for each Hussmann refrigeration equipment. evaporator take-off (minimum 3 in. (76 mm) diameter). BRANCH LINE PIPING Liquid Line – Koo
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P/N 0387183_D 2-3 EXPANSION VALVE ADJUSTMENT REFRIGERATION THERMOSTAT The thermostat body is located in the electrical Expansion valves must be adjusted to fully feed raceway near the right-hand end of the merchan- the evaporator. Before attempting to adjust diser. Its sensing bulb is located behind the right valves, make sure the evaporator is either clear or end interior back panel. only lightly covered with frost, and that the merchandiser is within 10 deg F (6.5 deg C) of its expected oper
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2-4 REFRIGERATION / ELECTRICAL Distributor Assembly RLT Coil TEV Bulb Mounted on Side of Suction Tube TEV Optional Gas Bypass Check Valve Heat Exchanger Assembly Component Location in RLT Models P/N 0387183_D WWW.HUSSMANN.COM
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P/N 0387183_D 2-5 DEFROST TERMINATION THERMOSTAT The standard disc type defrost termination ther- ELECTRIC mostat is not adjustable. ELECTRIC DEFROST ONLY 5 Door & On low-temperature merchandisers, the defrost 4 Door termination thermostat or optional termination RL RLN sensor is located on the right end of the coil at RLNI the bottom center return bend. If an optional RLNIE adjustable thermostat is used, the bulb will be 2 Door clamped to the suction line on the left end of the RL RLN case. RL
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2-6 REFRIGERATION / ELECTRICAL CONTROL SETTINGS CONTROL SETTINGS MEDIUM TEMPERATURE LOW TEMPERATURE Conventional Single Compressor Conventional Single Compressor Measure Discharge Air Temperature Measure Discharge Air Temperature at the center of the case at the center of the case at the discharge honeycomb. at the discharge honeycomb. Merchandiser temperature must be controlled by Merchandiser temperature must be controlled by a thermostat or other device with a 3–6 deg F a thermostat or other
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P/N 0387183_D 2-7 CONTROL SETTINGS CONTROL SETTINGS MEDIUM TEMPERATURE LOW TEMPERATURE Parallel Compressor Rack Parallel Compressor Rack Measure Discharge Air Temperature Measure Discharge Air Temperature at the center of the case at the center of the case at the discharge honeycomb. at the discharge honeycomb. Merchandiser temperature must be controlled by Merchandiser temperature must be controlled by a mechanical or electronic pressure regulator or a mechanical or electronic pressure regulato
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2-8 REFRIGERATION / ELECTRICAL MERCHANDISER ELECTRICAL DATA Merchandiser data sheets for specific models are When two or more merchandisers with full length shipped with this manual. The data sheets provide raceways are installed in line, remove the splash- merchandiser electrical data, standard electrical guards, end caps and raceway covers, and install schematics, parts lists and performance data. the nipple and nuts (supplied) providing electrical Refer to the merchandiser data sheets and cas
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P/N 0387183_D 3-1 DRIP PIPING AND SPLASHGUARDS WASTE OUTLET AND WATER SEAL CAUTION ! The waste outlet location varies for each of the 1, 2, 3, 4, and 5 door merchandisers. Drip piping is Splashguard brackets MUST be installed located between the front case base and the before piping case. splashguard fixture and runs parallel to the case (See Page 1-3) (see Data Sheet for exact locations). 4. Avoid long runs of drip piping. Long runs make it impossible to provide the pitch neces- INSTALLING DRIP
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3-2 DRIP PIPING AND SPLASHGUARDS INSTALLING SPLASHGUARDS The splashguard is shipped inside each mer- chandiser. AFTER merchandisers have been lev- eled and joined, and all drip piping, electrical and refrigeration work has been completed, re-install the front color panel, then install the splashguards. First, position top of splashguard over the top edge of the bracket; second, push the lower edge of the splashguard toward the bottom of the bracket until it snaps into place. 1 2 Splashguard Ret
