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6.1 CONTROLS AND MAINTENANCE
Only qualified personnel should perform troubleshooting and or
maintenance operations.
Prior to performing any maintenance or service, be sure that:
•
no part of the machine is powered and that it cannot be connected to the mains supply.
•
no part of the machine is under pressure and that it cannot be connected to the compressed air
system.
•
Maintenance personnel have read and understand the safety and operation instructions in this
manual.
Before attempting any maintenance operation on the dryer, shut it down and wait at least 30
minutes.
Some components can reach high temperature during operation. Avoid contact until system or
component has dissipated heat.
DAILY
•
Verify that the DewPoint displayed on the electronic instrument is correct.
•
Check the proper operation of the condensate drain systems.
•
Verify the condenser / aftercooler for cleanliness.
EVERY 200 HOURS OR MONTHLY
•
With an air jet (max. 2 bar / 30 psig) blowing from inside towards outside
clean the condenser / aftercooler; repeat this operation blowing in the
opposite way; be careful not to damage the aluminium fins of the cooling
package.
•
At the end, check the operation of the machine.
EVERY 1000 HOURS OR YEARLY
•
Verify for tightness all the screws of the electric system and that all the “Faston” type
connections are in their proper position, inspect unit for broken, cracked or bare wires.
•
Inspect refrigerating circuit for signs of oil and refrigerant leakage.
•
Measure and record amperage. Verify that readings are within acceptable parameters as listed
in specification table.
•
Inspect condensate drain flexible hoses, and replace if necessary.
•
Replace the filter element (cartridge) of the Pre-Filter (1 micron). Refer to the instructions in the
user’s and maintenance manual of the filter for this operation.
•
At the end, check the operation of the machine.
Summary of Contents for 20-350
Page 29: ...7 1 1 AHT 20 50 AC 7 1 2 AHT 75 AC 7 1 3 AHT 100 150 AC ...
Page 30: ...7 1 4 AHT 200 250 AC 7 1 5 AHT 300 350 AC ...
Page 31: ...7 2 1 AHT 20 50 ...
Page 32: ...7 2 2 AHT 75 ...
Page 33: ...7 2 3 AHT 100 ...
Page 34: ...7 2 4 AHT 150 ...
Page 35: ...7 2 5 AHT 200 250 ...
Page 36: ...7 2 6 AHT 300 350 ...
Page 41: ...NOTE ...
Page 42: ...NOTE ...
Page 43: ...NOTE ...
Page 44: ...GRAMAGLIA GO ...
