Dryer Use - Fini AF 250 Use And Maintenance Manual

The dryer operating limits are:
• Minimum ambient temperature
• Maximum ambient temperature
Space heating is required if the minimum above minimum temperature cannot be insured.
These dryers are designed for wall mounting.
Make sure there is sufficient service space around the dryer.
5.3 PNEUMATIC CONNECTION
Inlet / outlet connecting piping must not transmit vibrations or stress to the plant.
A 3-valve compressed air by-pass is recommended to semplify service.
If the dryer is installed between the compressor and the air receiver, a relief valve, set for 11 bar (160 psig) must be installed on the
inlet piping to the dryer.
5.4 ELECTRICAL CONNECTION
The electrical power system must include a main circuit breaker with fuses or ground circuit breaker which can be locked out.
The device must be suited to the machine specifications and set up to prevent accidental contacts in order to protect the personnel.
The electrical systems must be made according to best practice principles. A skilled electrician must check the efficiency of the earth
system.
Provide the earth connections as foreseen by the rules in force in the country of operating of the system.
5.5 FILTERING AND ACCESSORIES
If lubrificated air compressors are used, it is necessary to install a coalescing oli pre-filter before the dryer rated at a minimum
efficiency of 0,1 mg/m 3 (0,1 PPM). All must be fitted with a particulate after-filter rated at minimum efficiency of 20 microns to prevent
the carry-over of dessiccant dust into the compressed air system.

6.0 DRYER USE

6.1 START - UP
The Customer is responsible for installing the dryer and making the required electrical and pneumatic connections.
Skilled personnel must carry out initial system start-up.
• Remove all packaging materials and tools.
• Slowly pressurize with intercepted outlet.
• Switch on the power supply.
During the first installation or after the replacement of desiccant charge, the dryer must be reconditioned by operating with
compressed air and closed outlet air for about one hour. This insures full performance.
6.2 OPERATION
The controls are calibrated for nominal working conditions.
In case of different conditions:
• Higher temperature of inlet compressed air.
• Lower pressure of inlet compressed air.
• Lower dew-point
• Faster drying rate.
Contact your Seller or a Service Centre.
6.3 SHUT DOWN
• Close the by-pass valve
• Completely depressurize the dryer.
• Switch off the ON/OFF button (optional).
• Disconnect and lock out the power supply
+ 5 °C + 40 °F
+ 45 °C + 113 °F
4 / 25 Cod. 710.0054.02.00 rev.3A – 09.2010