Preventative Maintenance
37
4.1 - FREQUENCY SCHEDULE FOR PREVENTATIVE MAINTENANCE
All preventative maintenance described over here is considered for operating under normal conditions. In case the conditions are largely requested and
there is a risk of environmental contamination, the frequency of actions must be more intense.
4 - PREVENTATIVE MAINTENANCE
STRUCTURE
Visually inspect if there are loosen parts, damaged our broken;
X
Clean or change the air return filter;
X
Clean the condenser and evaporator drains;
X
Clean the serpentine slots of the condenser (use neutral soap);
Clean the serpentine slots of the evaporator (use neutral soap);
Retighten all bolts from the compressor support and the unit, observing the applied torque.
X
COMPRESSOR / CLUTCH
Visually inspect the clutch plate;
X
Visually inspect the condition, tension and alignment of the compressor’s belts;
X
Clean the compressor and the clutch with vapor or hot water;
X
Measure the resistance and the voltage on the clutch coil;
X
Check the compressor oil level (1/2 to 3/4 from the viewfinder), after 15min of operation;
Register the pressure at the compressor oil pump at 1000 RPM.
X
X
X
X
COOLING
Monthly Quarterly
Annually
Install the manometers and register the pressures, temperatures and conditions of the suction line;
Check the refrigerant gas load;
X
X
Visually inspect if there are signs of wear out and deterioration on the tubes and hoses;
X
Change the dryer filter at least once a year or each time the system is opened;
X
Check the opening and closure pressure;
X
Check the compressor’s efficiency;
X
Visually inspect if there is any sign of oil or refrigerant gas leakage.
X
Monthly Quarterly
Annually
Monthly Quarterly
Annually
