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HVAC
78
Sr.
NO.
DONT’S
REASON
1
DO NOT USE A/C WITH FRESH MODE OPEN
IN DUSTY ENVIRONMENT
THIS WILL LEAD TO MIXING OF OUTSIDE
AIR WITH COOL AIR INSIDE THEREBY RE-
DUCING COOLING EFFECT.
3
DO NOT OPERATE A/C WITH OUT REFRIG-
ERANT IN THE SYSTEM.
THIS WILL RESULT IN PREMATURE FAIL-
URE OF COMPRESSOR.
4
DO NOT LEAK CHECK THE A/C SYSTEM
WITH MORE THAN 20 KG/CM’ PRESSURE.
HIGHER PRESSURE MAY RESULT IN DAM-
AGE TO A/C COMPONENTS.
5
DO NOT LEAVE A/C JOINTS OPEN.
MOISTURE TENDS TO ENTER THE A/C
SYSTEM IF THE JOINTS REMAIN OPEN FOR
LONG TIME
6
DO NOT CHARGE REFRIGERANT IN THE
A/C SYSTEM WITHOUT CARRYING OUT
PROPER VACUUM.
IMPROPER OR NO VACUUMING OF THE A/C
SYSTEM RESULTS IN LESS COOLING
CONDITIONS