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OPERATING MANUAL FOR NATURAL REFRIGERANT 

CABINETS

IMPORTANT INFORMATION (PLEASE RETAIN THIS DOCUMENT)

This Manual covers the installation, operation and routine maintenance requirements for the following 

Williams Refrigeration products:

Williams Medi+ Range

Please read this Manual carefully before connecting the appliance.
Provided the instructions in this Operating Manual are read and implemented correctly, the optimum 

performance and reliability of your equipment should be maintained.
We assume the installer, user and service provider are appropriately trained, skilled and competent to 

properly and safely carry out the work, and will use the necessary safety equipment, and take the necessary 

precautions required of their intended work.
Improper installation, maintenance or repair may put the user at considerable risk.
Williams cabinets are available in a choice of temperature ranges.

Temperature parameters are set as follows:

High Temperature (H)

+2°C (35.6°F) / +8°C (46.4°F)

Low Temperature (L)

-18°C (0°F) / -22°C (-8°F)

General Regulations 

Declaration of Conformity:

Refrigerant Designation

Global Warming Potential

HC - R290

3

HC - R600a

3

 

Williams Refrigeration declares that all products manufactured by Williams Refrigeration comply with the 

applicable directives, and those products are therefore declared to be in conformity with the provisions of 

the above legislation.
Model No.: ...............................................................................
Serial No.: ................................................................................

WWW.WILLIAMS-REFRIGERATION.COM

Batteries Producer Registration Number: BPRN06225

Summary of Contents for Medi+ LWMP620

Page 1: ...nd will use the necessary safety equipment and take the necessary precautions required of their intended work Improper installation maintenance or repair may put the user at considerable risk Williams...

Page 2: ...led by persons who are appropriately trained skilled and competent to properly and safely carry out the work and serviced by qualified engineers for the handling of hydrocarbon refrigerants Ensure pro...

Page 3: ...the replacement of parts is required the equipment must be safely disconnected and isolated from the power supply using a lock off system at the isolation device It is advised that the electrical sup...

Page 4: ...iosafety Manual source World Health Organisation Laboratory Biosafety Manual the current edition IMPORTANT SAFETYINFORMATION INFORMATION ON PRODUCT LIABILITY In the following cases the designated prot...

Page 5: ...ay to reveal the polished stainless steel surface Care should be taken to ensure that no adhesive residue remains on the surface Any stubborn or tough adhesive marks can be removed by following the ad...

Page 6: ...party supervisory networks and systems such as Building Management Systems BMS and IoT cloud based systems via an RS485 Modbus data connection This will allow for a comprehensive supervision of the eq...

Page 7: ...e even loading Do not place items against the rear plenum or pushed against side walls When loading the appliance please ensure that its load is equally distributed throughout and ensure air can circu...

Page 8: ...essing the i button While keeping the i button pressed press the x button to reset the value To exit the information menu either wait 10 seconds or press the x button Alarms An alarm is reported via t...

Page 9: ...tinue in normal sequence Instead the compressor will switch to a five minute cycle which it cycles on for five minutes then off for five minutes The normal compressor cycle will be restored upon the r...

Page 10: ...ugher spots creamy polishes like CIF original cream can be effective Light pressure should be used when cleaning with the grain The cleaning process should be repeated in order to prevent any dirt bec...

Page 11: ...hould be checked and cleaned regularly and replaced if damaged To clean the gasket wipe with warm soapy water and a soft cloth ensuring it is completely dry before closing the door DO NOT use a sharp...

Page 12: ...ing Shut door Remove cover and clean condenser fins with a clean brush TROUBLE SHOOTING INFORMATION FOR THE MAINS POWER SUPPLY FAILURE ALARM OPTIONAL Fault Possible Cause Action The sounder is not wor...

Page 13: ...same quality and standard as we use to build your appliance and have been rigorously checked tested and inspected to ensure the very best quality and exact fit You can contact us directly for everythi...

Page 14: ...number and date of installation The serial number is located on the product identification plate inside the cabinet modular product door frame or similar location It is recommended that operators shou...

Page 15: ...ent that may affect performance 14 The customer permits persons other than those authorised by Williams Refrigeration to perform or affect repairs or adjustments to the equipment 15 If authorised repr...

Page 16: ...k Williams Refrigeration Hong Kong Unit C 12 F Roxy Industrial Centre 58 66 Tai Lin Pai Road Kwai Chung New Territories Hong Kong Tel 852 2407 5422 Fax 852 2407 3767 sales williams hongkong com www wi...

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