minus40 MED75GHD User manual

MED75GHD & MED250GHD
Controller: MT444 express
Version20170309
Minus40 is ISO9001:2015 Certified
MINUS 40 (PTY) Ltd , 44 Manhattan Street, Airport Industria Ext 2, Western Cape, Republic of South. Africa
PO. Box 254, Eppindust 7475, Republic of South Africa Tel: [phone] Fax: [phone]
Email: [e-mail] Web: www.minus40.co.za
Minus 40 (Pty) Ltd Reg. No. 89/03489/07 - Vat Reg No: 4090105521
Minus 40 Director: Michael Werner
INSTRUCTIONS MANUAL FOR MED75GHD & MED250GHD - UPRIGHT GLASS DOOR FRIDGE _REV.01
Thank you for choosing a Minus 40 Refrigerator
We have supplied you a premium quality product, which incorporates the latest innovations in refrigeration technology.
Properly maintained, it will give you many years of reliable service. Please read the following instructions carefully as it
contains important information concerning the safety, installation, operation and maintenance of your Refrigerator.
SAFETY
Always disconnect the appliance from the mains supply before attempting to do any maintenance or before removing
the bottom grille.
In case of appliance 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.
Any service performed on these refrigerators within the 1-year warranty period MUST be cleared and reported to the
manufacturer. Failure to do this will void the standard warranty.
INSTALLATION
Do a visual check of the unit to check for transport damage. Immediately report any damage to the transporter &
supplier of the refrigerator.
Remove all wrapping and packing material. Remove stacking blocks underneath the cabinet chassis.
oBe careful not to damage any of the delicate wiring or pipe-work in the compressor compartment.
Position the cooler out of direct sunlight and as far away as possible from any other sources of heat.
oThe maximum ambient temperature in which the cabinet will function is 44 °C.
oThe cabinet may be built into a furnishing fixture, or have its back to the wall, provided that the grille is totally
unobstructed.
The cabinet “breaths” through the grill. If it is blocked up, the cooler will not operate properly and you risk damaging
the compressor.
Level the appliance by rotating the adjustable feet.
oThe cabinet must be perfectly level in order for the door(s) to function properly.
The door may be refitted to have its hinges on the left hand side and its handle on the right hand side.
oFirst make sure the cooler is not connected to the electricity supply.
Remove ALL shelves, clips and products from the inside so not to damage the glass door.
oThen lay the refrigerator on its back.

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INSTALLATION continuing
oRelease the hinge-pin nuts.
oUnscrew the bottom hinge plate and carefully remove the door.
oRemove the top hinge pin and fit it at the other side.
oRotate the door 180°C.
oRefit the door hinge pins and screw the bottom hinge plate to the opposite side.
oLock the bottom hinge pin nut with about 90°C torsion on the torsion bar.
oReturn the cabinet to the upright position.
oDo not connect the appliance to the mains supply until you have read the following information.
THE UNIT MUST ALWAYS BE CONNECTED TO A VOLTAGE PROTECTOR SUPPLIED, OTHERWISE
WARRANTY WILL BE VOID
Please note: THE VOLTAGE PROTECTOR HAVE A 5 MINUTE TIME DELAY
ELECTRICAL CONNECTIONS
A qualified person in accordance with all local standards and regulations should carry out any electrical alterations to
the appliance.
The power supply should be in accordance with the electrical specifications listed on the rating plate. The rating plate
can be located inside the cooler on the top right hand side.
Always ensure that the electrical connection is suitably earthed.
oAn inadequate electrical installation can result in voltage reduction at the compressor which can cause damage
to the motor.
If in doubt about any of the electricalmatters mentioned above, a suitably qualified electrician should be consulted.
When all of the electrical requirements have been satisfied, the cooler may be plugged into the mains socket.
OPERATING INSTRUCTIONS
When loading the Refrigerator, always ensure that you do not block the internal air vents and always allow space for
the cold air to circulate around the contents and the inside of the cooler.
The Refrigerator is designed to automatically evaporate the condensate water in the compressor compartment.
Before replacing the light tubes, make sure the appliance is switched off and disconnected from the mains supply.
oRemove the transparent light covers by pulling outward.
oCarefully pull off the electrical connections from the tube ends.
oReplace with new tube with same dimensions and wattage and reconnect electrical push-on terminals.
oRefit the transparent cover by hooking it back into position.
oIt is recommended to leave the lights switched on at all times (especially in high relative humidity areas).
oIt not only prolongs the lifetime of the light tubes, but also reduces risk of condensation in some areas.
oFrom an electrical efficiency and safety point of view, we do not use electric elements to heat up any areas on our
products.
oSome components are specifically situated to utilize their heat transmission.
CLEANING
Before carrying out any cleaning:
oPlease ensure that the cooler has been disconnected from the electricity supply.
oThe refrigerator should be cleaned periodically with a non-abrasive cleaner and soft cloth.
oDo not use any detergentsor abrasive powders.
oA damp cloth may be used provided that all surfaces are polished dry afterwards.
PLEASE READ AND FOLLOW THE INSTRUCTIONS FOR CLEANING YOUR CONDENSER ON LAST PAGE
PLEASE FILL IN: “VACCINE REFRIGERATOR CONDENSER CLEANING SCHEDULE”.

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MAINTENANCE
Before carrying out any maintenance or repair work, please ensure that the cooler has been disconnected from the
mains supply.
To maintain maximum operating efficiency and to prolong the life of your cooler, the condenser must be cleaned
regularly (at least every 2 months).
In dusty environments, cleaning should be done more frequently.
IN THE EVENT OF NOT USING THE COOLER FOR EXTENDED PERIODS
oDisconnect from the power supply.
oRemove all the products from the storage compartment.
oThoroughly clean the cabinet inside and out.
oLeave the door(s) slightly open so that air can circulate freely.
TROUBLE SHOOTING –COOLER NOT COOLING
Note: some models have only one evaporator fan motor.
Symptom
Check
Fridge does not run and the
controller and the fans does
not work and the lights are
off.
Make sure the unit is plugged in
Check for a tripped circuit breaker
Fridge does not run, but the
controller is on.
Check the temperature setting on the controller
Clean the condenser coils
Unplug the unit, wait two hours and plug it in. If you hear it running, a
problem is causing the compressor to overheat
Check if the evaporator fan is running
Listen if the compressor ever runs. If not the compressor might be
faulty.
Fridge is not cold enough
Check the temperature setting
Assure that there is enough room for air flow in the fridge.
Check if the evaporator coil is iced-up, and if it is, put the unit in a
manual defrost as noted under MANUAL DEFROST.
Check for air flow restrictions in front and at the back of the grille.
Clean the condenser coils
Check the door seal
Fridge is too cold
Check the temperature setting
Fridge is noisy
Hissing and popping is normal.
Check that the fridge is level
Check the drain pan
Check the condenser fan (1)
Check the evaporator fan (2)
Fridge runs continuously
Clean the condenser coils (1)
Check the door seals
IN THE EVENT OF A BREAKDOWN
Disconnect the cooler from the power supply. Contact your supplier for advice.

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TEMPERATURE CONTROL
Minus40 vaccine refrigerators regulates air temperature to control the product (vaccine) temperature.
The running temperature of the refrigerators is factory pre-set at a range between 2°C to 8°C air temperature.
It is factory pre-set with a built-in defrost sequence of a maximum of 15 minutes every 2 Hours to remove ice
build-up from the evaporator coil.
During these defrost cycles air temperature can exceed 8°C for a very short time, but product temperature will
remain in the safe vaccine temperature range between 2°C to 8°C.
FOR FRIDGE TEMPERATURE MONITORING ADVICE PLEASE SEE THE LINK BELOW:
http://www.minus40.co.za/wp-content/uploads/2016/11/Fridge-temperature-monitoring-advice.pdf
SET POINT: 3°C

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Minus 40 Vaccine refrigerator
Condenser cleaning schedule
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Clean the condenser ( Radiator) with a vacuum cleaner or soft brush.
Check the condenser monthly
If there is dirt of fluff on the condenser clean as above
Mark the chart above with a cross on the DAYS that the condenser is cleaned

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