Air Conditioning and Heating R-12 All Caterpillar Machines – Cab Air Filters

The cab air filters are designed to provide clean air to the air conditioning and the heating coils. The cab air filters are designed to pressurize the cab. If the filters are not properly maintained, the coils will be coated with dirt. Dirty coils will result in loss of heating. Dirty coils will result in loss of cooling. Dirty coils could also result in failure of the compressor.




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Cab air filters should be inspected weekly. Inspect the filter for holes. Look through the filter toward a bright light. Check for damaged gaskets or dented metal parts. Do not use a damaged filter. A damaged filter will allow dust into the cab. A damaged filter will allow dust onto the cooling and heating coils.




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In moderate dust conditions, the cab air filters should be cleaned weekly. In extreme dust conditions, the filters should be inspected daily. In extreme dust conditions, clean the filters whenever it is necessary.

Remove loose dirt with compressed air. Do not exceed 690 kPa (100 psi) from an air nozzle that is an eighth inch in diameter. Keep the air nozzle at least 50.8 mm (2 inch) inches away from the filter.

The filters that are made of foam can be blown out with low pressure air. The filters can be gently washed with a mild detergent. After washing the filters, dry the filters with low pressure air.

Carbon impregnated filters may be blown out with low pressure air. Do not wash the carbon impregnated filters.

Standard filters or high efficiency filters may be blown out with low pressure air. Do not wash the standard filters. Do not wash the high efficiency filters.

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