fiac TDRY 6-18 Manuel D'instructions page 58

The maintenance operations must be worked out by qualified personnel.
Before any intervention, ensure 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.
Before attempting any maintenance operation on the dryer, switch it off and wait at least 30
minutes. During operation the copper piping connecting the compressor to the condenser can
reach dangerous temperature able to burn the skin.
DAILY
• Verify that the DewPoint displayed on the electronic instrument is correct.
• Check the proper operation of the condensate drain systems.
• Verify the condenser for cleanliness.
EVERY 200 HOURS OR MONTHLY
• With an air jet (Max. 2 bars) blowing from inside towards outside clean the condenser; repeat
this operation blowing in the opposite way; be careful not to damage the aluminium blades of the
cooling package.
• Close the manual condensate drain valve, unscrew the mechanical strainer and clean it with
compressed air and a brush. Reinstall the strainer properly tight, and then open the manual valve.
• 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.
• Check the conditions of the condensate drain flexible hoses, and replace if necessary.
• At the end, check the operation of the machine.
The troubleshooting and the eventual checks have to be worked out by qualified personnel.
Pay particular attention in case of interventions on the refrigerating circuit. The refrigerating fluid, if
under pressure, while expanding could cause freezing burns and serious damage to the eyes,
should it get in contact with them.
SYMPTOM
The dryer doesn't start.
The compressor doesn't
work.
6.1 CONTROLS AND MAINTENANCE
6.2 TROUBLESHOOTING
POSSIBLE CAUSE - SUGGESTED ACTION
Verify that the system is powered.
Verify the electric wiring.
Activation of the compressor internal thermal protection - wait for 30
minutes, then retry.
Verify the electric wiring.
Where installed- Replace the internal thermal protection and/or the start-up
relay and/or the start-up capacitor and/or the working capacitor.
Where installed- The P
point.
Where installed- The P
point.
Where installed- The T
specific point.
If the compressor still doesn't work, replace it.
pressure switch has been activated - see specific
A
pressure switch has been activated - see specific
B
safety thermo-switch has been activated - see
S
GB