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         MW60GHD, MW130GHD, MW230GHD

Congratulations on your new Minus40 Medical Warmer!

This premium product incorporates the latest innovations in heating 
technology with a highly durable design. Properly maintained, the 
unit(s) will provide many years of reliable service.

MINUS

40

MINUS40 (PTY) Ltd Head Office: 8 Manhattan Street | Airport Industria Ext 2 | Western Cape 

Tel: +27 (0) 21 386 2290 | E-mail: service@minus40.co.za

MINUS40 Medical Warmer Instruction Manual

Medical Warmer

SAFETY INSTRUCTION

• 

Always disconnect the unit from the mains supply before 
attempting to do maintenance.

• 

In case of unit failure, disconnect it from the power supply and 
contact your service technician or supplier for advice.

• 

If the supply cord is damaged it must be replaced by the 
manufacturer or its service agent or a similarly qualified person 
in order to avoid a hazard.

INSTALLATION GUIDE

Follow these easy steps to Install your new Minus40 unit.
• 

Remove all wrapping and packing material.

• 

Position the unit out of direct sunlight.

• 

The unit may not be built into a furnishing fixture, or have its back 
to the wall.

• 

The unit “breaths” through the grill, and if blocked, the unit will 
not operate properly.

• 

Ensure the unit is perfectly level for the door to function properly.

• 

This unit is intended for use in a stable ambient environment, with 
an ideal temperature of 22 °C or less.

Please read the following instructions carefully as it contains 
important information concerning the safety, installation, operation and 
maintenance of your Warming Cabinet.

LOADING GUIDE

• 

Minus40 does not make recommendation on specific chamber 
set points for any items that are to be warmed. For appropriate 
heating requirements and set points of blanket, intravenous and 
irrigation fluids, please follow the temperature guidelines printed 
on the container or contact the supplier for temperature and 
expiration periods.

• 

Load contents into the chamber with a minimum of 2 to 3 cm of 
space between all walls and fan to allow for evenly distributed 
circulation. Allow 2 cm of spacing between fluid containers for 
evenly distributed heating. 

• 

Fluid Bags, should not be stacked as this increases the heating 
time required to achieve set temperatures. 

• 

Blankets, must be folded and stacked to allow a 2 cm minimum 
space from the sides, back and top of the compartment or the 
shelf above. Do not let blanket protrude past the front edge of 
the shelf.

• 

Always ensure that the air vent in the airflow insert panel is not 
obstructed  and always allow space for the warm air to circulate 
the contents and the inside of the warmer.

• 

Ensure the number of bottles/bags, or blankets as applicable do 
not exceed the maximum capacity per shelf or basket

WARNING

• 

Avoid injury by using proper personal protective equipment when 
loading or unloading the Warming Cabinet. Internal surfaces are 
hot, glass may shatter when cooled suddenly and solution bags 
or bottles may burst when picked up. Rotate warmed contents 
on a first-in, first-out basis. Failure to do so may present cold or 
discoloured contents.

POWER SUPPLY

DO NOT CONNECT THE UNIT TO THE MAINS SUPPLY UNTIL YOU 
HAVE READ THE FOLLOWING INFORMATION.

• 

A qualified person by all local standards and regulations should 
carry out any electrical alterations to the unit.

• 

The power supply should be in accordance with the electrical 
specifications listed on the rating plate. The rating plate can be 
located inside the unit on the top right-hand side.

• 

Always ensure that the electrical connection is suitably earthed.

• 

If in doubt about any of the electrical matters mentioned above, a 
suitably qualified electrician should be consulted.

• 

When all of the electrical requirements have been satisfied, the 
unit may be plugged into the mains socket.

DUE TO THE SENSITIVE NATURE OF THE CONTROLLER, THE 
MEDICAL WARMER SHOULD ALWAYS BE PLUGGED WITH A 
SURGE  PROTECTOR SUPPLIED BY MINUS40. 

REPAIRS

• 

Before carrying out any maintenance or repair work, please 
ensure that the unit has been disconnected from the mains 
supply.

• 

Any  service  performed  on  these  warmers  within  the  1-year 
warranty period MUST be cleared and reported to the 
manufacturer. Failure to do this will void the standard warranty.

CAUTION

Do not use in the presence of flammable anaesthetics.
Do not heat liquids in the presence of flammable solvents
Do not warm flammable materials or liquids

 

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