# Hit-Line Deli Cases and Open Merchandisers: Use and Care

> How to install, run, clean and look after Hit-Line serve-over deli counters and open multideck merchandisers, from Hit-Line's instruction manuals.

How-to by Norpex. Published 2026-11-01, updated 2026-11-01.
Canonical: https://norpex.ca/guides/hit-line-deli-cases-and-open-merchandisers

![Hit-Line Missouri serve-over refrigerated meat counter with a lift-up front glass](https://norpex.ca/m/24/56/2456000f828df25e260b08d0d14d39ea8315af103e040cf5d45832a265d0f8f1.jpg)

Pictured: [Hit-Line Missouri Serve-Over Counter](https://norpex.ca/product/hit-line-missouri-w-12-ps-130-sla-125)

Hit-Line's serve-over deli counters and open multideck merchandisers are built to display pre-packaged, pre-chilled food in an air-conditioned room. This guide covers installation, daily use, cleaning and the monthly maintenance their instruction manuals require.

## Key takeaways

- Installation must be performed by a qualified, licensed technician following all local codes and the manual's electrical specifications.
- Maintain an indoor ambient temperature of 25°C and relative humidity of 60% with continuous ventilation for optimal performance.
- Never operate the cabinet with open engine guard plates, remove frost mechanically, or overload shelves beyond 150 kg/m².
- Clean only with a neutral detergent and a damp cloth, with the power off, and wait at least five minutes before plugging back in.
- Every month: clean the condenser, clean the condensate drains, check electrical connections and control settings, and check the hydraulic connections.

## Which instruction manual covers your Hit-Line model

Hit-Line provides separate instruction manuals for different model families. The Missouri manual covers the Missouri serve-over refrigerated counters, including the AC 120/110 A, cold diamond, enigma, sapphire, and W-series gravity-coil meat display cases. The Georgia manual applies to the Georgia AG 120 A plug-in serve-over counter. The Symphony manual covers the Symphony AG 120 A, Symphony Duos AG 200 A and M/A, and Symphony luxe MG 100 M and 120 M serve-over counters. The Indiana manual is for Indiana multideck cabinets, including the 3/2 MV M, cube AV MT A, eco ASV, eco medium AV A, and optima MV M models. The Prima manual applies to Prima AG 090 A plug-in serve-over counter, and the Louisiana manual covers Louisiana wall-sited cabinets such as the 5 MV M, eco ASV, eco MSV, ULF AV A, and ULF MV M models.

Other Hit-Line families we list, such as Carolina, Minnesota, Opera and Sonata, come with their own manuals. The manuals used here are the English sections of multilingual documents.

## Installation requirements

A qualified, licensed installer must handle all electrical connections and, for remote models, connect the unit to the centralized cold supply system. Hit-Line's manuals for Missouri, Indiana, Georgia, Louisiana, Prima, and Symphony all state that the unit must be placed indoors in climatic conditions corresponding to 3rd grade — an ambient temperature of 25°C and relative humidity of 60% per ISO 23953-2-2015. The premises must have a continuously working ventilation and air conditioning system to maintain these limits; otherwise, the manufacturer cannot guarantee optimal functioning.

The manuals' electrical data are for a 220-240 V, 50 Hz single-phase supply with no more than ±10% deviation, connected through a protective cutout device and, for plug-in models, a grounded socket that stays easy to reach. The voltage of the unit you receive is on its nameplate on the rear wall, together with the power consumption and refrigerant; the electrician works from that plate and local code. Remote models are connected to the central refrigeration system by a refrigeration technician.

Upon delivery, the manual instructs you to check packaging integrity, unpack carefully to protect glass components, and verify all parts for integrity. Remove the shipping pallets by unscrewing them, then perform a first hygienic cleaning with a neutral detergent and dry all washed parts. Do not use abrasive cleaners, alkaline solutions, chemicals, or metal sponges. Ensure the adjustable-height supports are set correctly to level the case before connecting power.

- Ambient conditions: 25°C, 60% RH, continuous ventilation and air conditioning.
- Electrical: as on the nameplate, through a protective cutout device; grounded socket for plug-in models.
- Remote units: piping connected only by a refrigeration technician.

## Daily operation and controls

All Hit-Line display cases are designed exclusively for pre-packaged and pre-chilled food products at the temperature of the refrigerated enclosure. The refrigeration work is controlled by an electronic unit equipped with temperature sensors that automatically regulate the cooling cycle and the timing and duration of defrost. There are no operator-adjustable setpoints; the controller is pre-configured at the factory, and any changes require authorized service personnel.

To maintain proper air circulation, never block the air curtains or obstruct the discharge and return air paths. The manuals emphasize that two-jet air curtains provide stable internal temperatures. When loading product, respect the maximum permissible load: the Indiana and Louisiana manuals specify no more than 150 kg per square metre. Overloading can impede airflow and cause uneven cooling.

Safety rules during operation are paramount: never operate the cabinet with engine room guard plates open, with removed or faulty automation devices, or with damaged electrical insulation. Do not place water vessels on top of the unit, and never use gasoline or flammable substances nearby. If you notice any unusual sounds, sparks, or smoke, immediately disconnect the power cord and call a qualified technician. The unit must not be switched off by pulling the cord; always grip the plug firmly when removing it from the socket.

After disconnecting the unit for any reason, wait at least five minutes before reconnecting to avoid material damage, as stated in all operator manuals.

- Load products within the 150 kg/m² shelf limit.
- Keep air curtains unobstructed; do not overload shelves.
- Never open guard plates while the unit is running.

## Cleaning and routine care

Routine cleaning ensures food safety and prolongs equipment life. Before any cleaning task, always disconnect the power cord from the outlet. Hit-Line's manuals for all series stress that you must never wash the cabinet with a direct water jet, as this can damage insulation and cause electric shock. Use only a damp cloth or sponge with a mild, neutral detergent. After washing, wipe all surfaces dry with a soft cloth. Do not use abrasive powders, scouring pads, alkaline solutions, or chemicals, as these can scratch stainless steel and damage polymer-powder-coated surfaces.

Before cleaning or any repair, disconnect the counter, remove all products, and keep water away from the fans, lamps, wires and electrical components; never splash detergent on electrical parts. Clean the internal parts to remove pathogenic micro-organisms, then wipe everything dry. After disconnecting the unit for any reason, wait at least five minutes before plugging it back in.

Every month, the manuals require: a thorough cleaning of the condenser on built-in units; a full defrost, with the power disconnected, of any low-temperature equipment; cleaning the condensate drainage system; removing anything that has fallen into the internal parts; checking the electrical connections and that the control settings still match the factory recommendations; lubricating the mechanical components; a hygienic cleaning; and a check of the hydraulic connections, ideally by a qualified professional.

- Clean only with neutral detergent and a damp cloth; never use a water jet.
- Unplug before cleaning and wait five minutes before reconnecting.
- Never remove frost mechanically.

## When something is wrong

The manuals carry no fault table; they name what upsets these cases. If a case is not holding temperature, check that the room is within 25°C and 60% relative humidity with the ventilation running, that the air curtains and air paths are not blocked, that shelves carry no more than 150 kg per square metre, and that the monthly condenser and drain cleaning has been done.

If the cabinet makes unusual sounds, sparks or smokes, disconnect it at once and call a qualified technician. Never run it with the machine-compartment guard plates open, never store boxes or packaging in that compartment, and never open the electrical enclosure. The refrigerant is flammable: if a leak is suspected, keep open flames away and ventilate the room.

## When to call for service

All repairs, including replacement of the power cord, must be performed by the manufacturer, an authorised service representative, or a specialist with the required training. Hit-Line's manuals for every series state that if the power cord is damaged it must be replaced by those entities. For any fault beyond simple checks — such as a refrigerant leak, failure of the electronic controller, or mechanical damage — contact the manufacturer's service network. The manufacturer is not liable for damage resulting from unauthorised repairs, incorrect installation, or operation that deviates from the instructions.

Refrigerant handling at disposal is also for a service representative or qualified contractor. Never disassemble or modify the cabinet yourself.

## Common questions

### What ambient temperature is required for Hit-Line deli cases?

The manufacturer specifies an indoor climate of 25°C and 60% relative humidity (3rd grade per ISO 23953-2-2015). The premises must have a continuously working ventilation and air conditioning system to maintain these conditions; deviation can compromise performance.

### Can I install a Hit-Line display case by myself?

No. Installation and all electrical connections must be carried out by a qualified, licensed installer. The cabinet requires a grounded socket with a protective cutout device, and remote models need a refrigeration technician to connect the central cold supply.

### How do I clean the glass and surfaces without damaging them?

Unplug the unit, then wipe all surfaces with a damp cloth or sponge and a neutral detergent. Dry thoroughly. Never use a direct water jet, abrasive cleaners, alkaline solutions, or metal sponges. After cleaning, wait at least five minutes before plugging it back in.

### Why is water pooling under my display case?

The manuals ask for the condensate drainage system to be cleaned every month and the hydraulic connections checked, so start there. Never chip at frost; let the defrost run. If water keeps appearing, call a qualified technician.

### What should I do if the unit makes a loud noise or smells of burning?

Immediately disconnect the power cord from the outlet. Do not attempt to restart the cabinet. Contact the manufacturer's authorized service network. The manuals warn that such symptoms indicate a serious fault that requires a qualified technician.

## Related guides

- [Refrigerated Display Case Buying Guide: Deli, Gelato and Grab-and-Go](https://norpex.ca/guides/refrigerated-display-case-guide)
- [Commercial Refrigerator and Freezer Temperatures: What to Set and Why](https://norpex.ca/guides/commercial-refrigerator-temperatures)

## Shop the catalogue

- [Deli/Meat Showcase](https://norpex.ca/products/deli-meat-showcase)
- [Open Air Coolers](https://norpex.ca/products/open-air-coolers)