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VIII. Maintenance

Kooltronic Air-Cooled Air Conditioners require routine cleaning of the condenser coil and the air filters to assure
unimpeded airflow through the condenser heat exchanger. It is not possible to recommend specific condenser coil or
filter cleaning intervals, since the level and the nature of airborne particulate matter differs widely with each
installation. It is generally sufficient to clean the condenser coil and/or the aluminum mesh filter when the outer
surfaces appear covered with a thin layer of dust, lint or other foreign matter. The condenser coil can be washed
or blown out with air, depending on the foreign matter involved (see below - 

Filter and condenser coil service

).

The aluminum mesh filter can be washed with warm water. Appropriate disposable replacement filters are available
from Kooltronic.

If routine condenser coil or filter service is neglected or delayed, the air conditioner will not perform at its design
capacity. The first indication of an excessively clogged condenser coil or air filter is usually a gradual increase of
temperature within the equipment cabinet. If operation is continued under these conditions, the compressor will be
shut off by the thermal overload device. The compressor will restart when its external temperature drops below the
protector threshold setting and the compressor will continue to cycle on and off. Continued operation under these
conditions will cause damage, shorten compressor life and void the warranty.

A. Filter and condenser coil service

The filter holder must be removed in order to clean the filters. After removal, the filters should be flushed
under warm running water with clean side up. If the accumulated dirt is oily, washing in a detergent bath
is recommended, followed by a warm water wash as above.

The exposed condenser coil must be cleaned by pressurized air or pressurized cleaning solution. Dirty
liquid will be removed through the condenser coil drain pan.

B. Blowers

The design life of the blowers used in all Kooltronic Air Conditioners is substantially in excess of 20,000
hours. All Kooltronic condenser and evaporator blowers are equipped with automatic-reset thermal
overload protectors.

CAUTION

If field replacement of a blower motor is necessary, most blower assemblies, including the mounting plate, are
readily removable. Each of the blower mounting plates is held to the air conditioner cabinet structure by screws
and nuts. For installation of the replacement blower, electrical connections may be broken at the terminal
block, or power leads may be cut and appropriately spliced together.

C. Compressor

All Kooltronic compressors are approved by UL and CSA, and require no maintenance. They are
hermetically sealed and charged at the factory, and equipped with automatic-reset thermal overload
protectors.

If the compressor fails, it is strongly recommended that the air conditioner be returned to Kooltronic for
service.

Before opening the air conditioner, disconnect all power.

Содержание Guardian K2NA4C3DP24L

Страница 1: ...THAT THIS MANUAL BE READ AND UNDERSTOOD THOROUGHLY KOOLTRONIC INC 30 Pennington Hopewell Road Pennington NJ 08534 609 466 3400 FAX 609 466 1114 www kooltronic com 900 039 85 12 21 CDR 20369 GUARDIAN...

Страница 2: ...c model page of the Kooltronic website I Introduction Kooltronic Air Conditioners are designed to provide a cool dehumidified environment for your electronic components There are models to fit virtual...

Страница 3: ...prior to operating in order to allow the compressor oil to drain to the compressor sump area CAUTION 3 Before operating this unit all electrical wiring must be checked to assure the proper connection...

Страница 4: ...incorrect type or amount of refrigerant will adversely affect performance and may damage the unit r Make sure that these parameters are met Failure to do so may result in permanent damage to the unit...

Страница 5: ...n discharged to the environment When the Kooltronic Air Conditioner is properly sized it should operate constantly and maintain 75 F to 115 F enclosure temperature depending on the ambient temperature...

Страница 6: ...the new set point value push the SET key again or wait 10 seconds HOW TO CHANGE A PARAMETER VALUE To change a parameter s value operate as follows 1 Enter the Programming mode by pressing the SET plu...

Страница 7: ...p code 7 0 65535 rEL Software release 0 rSE Real set point 0 onF on off key enabling ES PbC Kind of probe ntc Adr Serial address 1 1 247 HES Differential for energy saving 0 F 54 54 rrd Regulation res...

Страница 8: ...ate the air conditioner for approximately ten 10 minutes During this period the evaporator fan should operate continuously and no unusual noise or vibration should be evident The condenser blower is c...

Страница 9: ...10 for the location of all mounting holes and cutouts Make sure the cutouts don t interfere with components inside your cabinet Proper alignment of all air inlets and outlets is essential for optimum...

Страница 10: ...2 8 42 213 8 1 24 31 5 9 65 245 1 1 00 25 4 2 14 54 4 6 50 165 1 6 90 175 2 4 28 108 7 1 10 27 9 1 03 26 1 8 312 7 9 DIA HOLES 1 2 MOUNTING PLAN Dimensions inches mm are for reference only and are su...

Страница 11: ...4 244 8 1 04 26 4 12 00 304 8 1 55 39 4 4 26 108 2 POWER CORD 68 17 0 PROGRAMMABLE THERMOSTAT TEMPERATURE ALARM TERMINAL BLOCK Drawings and Dimensions con t Dimensions inches mm are for reference only...

Страница 12: ...able Thermostat Six Foot 1 8m minimum 3 Wire Power Cord Stainless Steel Shell NEMA 4X models UL CUL Listed GuardianX NEMA 4X model offered with these additional features NEMA 4X Rating Maintained UL50...

Страница 13: ...d operation under these conditions will cause damage shorten compressor life and void the warranty A Filter and condenser coil service The filter holder must be removed in order to clean the filters A...

Страница 14: ...ine Voltage Check Nameplate Voltage against supply Voltage Compressor and Condenser Blower do not run Return temperature is Failed Compressor Check Compressor wire connections above set point plus dif...

Страница 15: ...r Clean Coil difference between return and Coil clogged supply air is less than 10 F Evaporator Blower Condenser Loss of Refrigerant Locate and repair leak Blower and Compressor are running Ice on Eva...

Страница 16: ...eceived by customer Number of parts to be returned Product description model and serial number Reason for return Action requested Contact name telephone FAX numbers and e mail address Pack unit in a s...

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