Maintenance And Repair - Gardner Denver VSS Series Operation & Maintenance Manual

SECTION 6

MAINTENANCE AND REPAIR

DO NOT REMOVE, REPAIR, OR REPLACE ANY ITEM ON THE DRYER WHILE THE DRYER IS UNDER
PRESSURE.
BEFORE BEGINNING ANY REPAIRS, MAINTENANCE, OR INSTALLATION WORK, ENSURE THAT THE POWER
IS OFF AND THE DRYER IS AT ATMOSPHERIC PRESSURE.
BEFORE WORKING ON THE DRYER OR RELATED EQUIPMENT, ENSURE THAT ALL PERSONNEL HAVE READ
AND UNDERSTAND THE SAFETY AND OPERATION INSTRUCTIONS IN THIS MANUAL.
EVACUATE AND CHARGING TO BE DONE ONLY BY A CERTIFIED EPA TECHNICIAN !
PREVENTIVE MAINTENANCE SCHEDULE.
This is a suggested schedule based on average dryer conditions. As conditions such as dirty environment, humidity
conditions, ambient temperature, etc. change, the frequency and duration of the inspections may change.
DAILY
1. Inspect the dryer for proper operation.
2. Check the control panel for alarms.
3. Verify proper inlet and ambient air conditions.
WEEKLY
1. Test the drain by depressing the drain switch on the main control panel.
2. Inspect and log pressure differential readings across filters. Inspect filters if they are out of range. Change as
necessary.
MONTHLY
1. Blow entire unit out with compressed air.
2. Blow condenser coils out with compressed air.
3. Inspect refrigeration compressor for overheating.
4. Clean air filter on the condenser. NOTE : Filters that are running in dirtier than normal environments will need to be
inspected and changed more often.
SEMI-ANNUALLY
1. Inspect entire assembly for loose connections, screws, panels etc.
2. Inspect refrigeration circuit for signs of oil and refrigerant leakage.
3. Clean fan blades, casing, motors and internal components. Use light mixture of detergent. No oil based cleaning
solvents should be used for cleaning the unit.
ANNUALLY
1. Tighten all electrical connections. Look for broken, cracked, or bare wires.
2. Measure and record amperage. Verify that readings are within acceptable parameters as listed in specification table.
3. Clean the condenser coil with a mild detergent mixture and brush.
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