Randell PT-W-L Series - User Manual

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OPERATOR MANUAL

IMPORTANT INFORMATION, KEEP FOR OPERATOR

2016 Gees Mill Road, Suite 200, Conyers, GA 30013

888-994-7636, fax 888-864-7636

uniﬁedbrands.net

PART NUMBER PP MNL2105, REV. A (09/21)

This manual provides information for:

PT-W-L SERIES PREP TABLES

THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ,

UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND WARNINGS

CONTAINED IN THIS MANUAL.

FOR YOUR SAFETY Do not store or use gasoline or other ﬂammable vapors

and liquids in the vicinity of this or any other appliance.

WARNING R290 ﬂammable refrigerant in use. Improper installation,

adjustment, alteration, service or maintenance can cause property

damage, injury or death. Read the installation, operating and maintenance

instructions thoroughly before installing or servicing this equipment.

NOTIFY CARRIER OF DAMAGE AT ONCE It is the responsibility of the

consignee to inspect the container upon receipt of same and to determine

the possibility of any damage, including concealed damage. Uniﬁed

Brands suggests that if you are suspicious of damage to make a notation

on the delivery receipt. It will be the responsibility of the consignee to ﬁle

a claim with the carrier. We recommend that you do so at once.

Manufacture Service/Questions 888-994-7636.

RETAIN THIS MANUAL FOR FUTURE REFERENCE

NOTICE: Due to a continuous program of product improvement, Uniﬁed Brands

reserves the right to make changes in design and speciﬁcations without prior notice.

NOTICE: Please read the entire manual carefully before installation. If certain

recommended procedures are not followed, warranty claims will be denied.

MODEL NUMBER _________________________

SERIAL NUMBER _________________________

INSTALLATION DATE ______________________

The serial number is located in the cabinet left side

or back wall closest to the compressor compartment

under the drawer track. An example is shown here.

EQUIPMENT DESCRIPTION

MODEL LENGTH

DEPTH HEIGHT

PAN

CAPACITY

1/6 SIZE

DOORS

STORAGE

CU. FT.

VOLT/

CYCLE/

PHASE

AMPS NEMA PLUG SHIP WT.

UNIT

OVERALL WITH

CUTTING BOARD

WORK

SURFACE

OVERALL

COVER OPEN

PT48-18W-L

48" 33" 36.125" 34.75" 49" 18 (2) 18" 10.1 1/5 115/60/1 3.5 5-15P 411

PT60-24W-L

60" 33" 36.125" 34.75" 49" 24 (1) 21", (1) 27" 14.7 1/4 115/60/1 3.5 5-15P 456

PT72-30W-L

72" 33" 36.125" 34.75" 49" 30 (2) 27" 19.2 1/4 115/60/1 3.5 5-15P 502

PT84-36W-L

84" 33" 36.125" 34.75" 49" 36 (1) 18", (2) 27" 24.15 1/4 115/60/1 3.5 5-15P 565

Information contained in this document is known to be current and accurate at the time of printing/creation. Uniﬁed

Brands recommends referencing our product line websites, uniﬁedbrands.net, for the most updated product information

Corporation.

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Questions and Answers

E
Elizabeth CastroAug 10, 2025
How to clean condenser coils on Randell PT-W-L?
- A
  Andrew MercerAug 10, 2025
  If you are experiencing issues with heat transfer in your Randell Refrigerator's compressor, the condenser coils may be dirty. Clean them using a coil cleaner and/or a vacuum cleaner with a brush.
J
Jason HinesAug 25, 2025
Why are the gaskets on my Randell Refrigerator becoming brittle?
- S
  stevensjonathanAug 26, 2025
  The gaskets on your Randell Refrigerator may be becoming brittle because you are using bleach to clean them. To prevent this, do not use bleach for cleaning gaskets.

This manual describes the Randell PT-W-L Series Prep Tables, which are commercial refrigeration units designed for food preparation and storage in professional kitchen environments. These units are specifically intended for use in laboratories in commercial, industrial, or institutional occupancies, as defined by ASHRAE 15, the Safety Standard for Refrigeration Systems.

Function Description

The Randell PT-W-L Series Prep Tables are self-contained, air-cooled refrigeration units that utilize R290 flammable refrigerant. Their primary function is to maintain food products at safe and desired temperatures, both in the base storage area and in the top rail where condiment pans are placed. The units are equipped with a Carel controller, which manages the refrigeration cycle, including compressor operation, defrost cycles, and evaporator fan activity. This controller also provides low voltage protection, preventing the compressor from operating if the voltage drops below 104V.

The prep tables are designed to ensure proper temperatures for condiments when utilized correctly. They feature standard hooded roll covers that should be kept in the closed position when the unit is not in use and between rush periods to maintain product temperatures, especially in warmer environments. All individual condiment pans must be in the rail at all times. If no product is available or necessary, the manual suggests filling empty pans with 1 to 2 inches of water as an insulating barrier.

Usage Features

The units are designed for normal operating temperatures between 70°F (21°C) and 86°F (32°C). Operating outside of these temperatures may cause premature product wear or failure. The temperature control is factory preset for optimum performance, but users can adjust it to achieve desired temperatures based on varying ambient conditions, elevation, food type, and operational needs.

The Carel controller provides a clear LED display indicating the unit's operational status, including:

Compressor energized: Indicates the compressor is actively running to cool the unit.
Defrost in progress: Shows when the unit is undergoing a defrost cycle.
Evaporator fan energized: Indicates the evaporator fan is running.
An alarm is occurring: Signals a potential issue or fault within the system.

Users can power the unit on or off by pressing and holding the controller power button for more than 3 seconds. Manual defrost can also be initiated by pressing and holding the defrost button for more than 3 seconds.

Adjusting the set point (temperature) is straightforward:

Press and hold the "set" button for 1 second to access the set point.
Once the set point starts flashing, use the up or down buttons to adjust the temperature.
Press the "set" button for 3 seconds to save the new set point.

For units equipped with drawers, the manual provides instructions for removal and installation. Drawers should slide freely and fully extend, seating properly in the cabinet when closed. The drawer tracks have arrows etched or stickered on them, always facing forward and up, to guide proper installation.

Maintenance Features

Regular maintenance is crucial for the longevity and efficient operation of the Randell PT-W-L Series Prep Tables. Unified Brands strongly recommends a preventive maintenance program that includes monthly, weekly, and daily procedures. Neglecting these guidelines may void the warranty for repairs and parts replacements.

Daily Maintenance:

Cleaning: Clean all gaskets on a weekly basis with a solution of warm water and a mild detergent. This prevents gaskets from becoming brittle and losing their sealing ability.
Condenser Coil: Clean condenser coils monthly. The condenser coil and evaporator fan must be clean to ensure proper airflow and heat transfer. Dust, grease, and other debris can accumulate, reducing efficiency and increasing energy consumption. Use a soft brush or vacuum cleaner to remove debris.
Evaporator Fan: Clean fan blades on the condensing unit and evaporator assembly with a solution of warm water and mild detergent.
Gaskets: Clean all gaskets with a mild detergent and warm water. Apply a thin coat of petroleum jelly or food-grade lubricant to maintain flexibility.
Drain Pan and Drain Line: Clean the drain pan and drain line daily to prevent blockages and odors. Use a stiff brush and hot water with a mild detergent. Flush with clean water.
Door Seals: Check door gaskets for tightness by closing the door on a piece of paper. If the paper slides out easily, the gasket may need adjustment or replacement.

Important Cleaning Precautions:

DO NOT use sharp utensils and/or objects.
DO NOT use steel pads, wire brushes, scrapers, or chloride cleaners on stainless steel surfaces.
DO NOT use abrasive cleaning solvents or hydrochloric acid (muriatic acid) on stainless steel.
DO NOT pressure wash equipment, as this can damage electrical components.

Service and Refrigerant Handling:

R290 Refrigerant: The unit uses R290 flammable refrigerant. Service work must be performed by factory-authorized service personnel certified in R290 systems to minimize the risk of ignition due to incorrect parts or improper service.
Safety: No smoking or open flames are allowed when servicing the equipment. A CO2 or powder type fire extinguisher should be available.
Parts: Replacement parts must be factory OEM and have specific UL certification for non-sparking components.
Leak Checking: Do not use a Halid leak detector on an R290 system. Electronic leak detectors must be specifically designated for combustible gas. Bubble solution or ultrasonic leak detectors are acceptable.
Refrigerant Recovery: Follow all national and local regulations for R-290 refrigerant recovery.
Charging: Follow the charge amount specified on the data tag. Ensure the system is sealed, leak-checked, and evacuated to a minimum 500 microns before charging.

The manual also emphasizes the importance of proper installation, including ensuring the unit is level, has adequate clearances for ventilation, and is connected to a dedicated electrical line with correct voltage and amperage. Failure to follow installation guidelines and recommendations may void the warranty.