Product Manual

ENGLISH

10 - Edition 08/2014 Cod. 2200791683 01 -

18.0 STARTING UP

BEFORE CARRYING OUT ANYOPERATION ON THE MACHINE, ENSURE THAT THE ELECTRIC POWER SUPPLY HAS BEEN

DISCONNECTED

18.1 PRELIMINARY CONTROLS

Before starting the dryer, check:

- The correct connection to the compressed air piping: remember to remove eventual caps on the drier inlet and outlet.

- The correct connection to the condensate drainage system.

- That the power supply is right.

18.2 STARTING AND STOP

Start the system before the air compressor starts running and stop it after the air compressor has been stopped. The

compressed air piping will be free of condensate only by doing so. The drier must be kept running during all the time the

air compressor is running. WARNING: if the drier is switched off, before starting it again, wait at least 5 minutes in order

to allow the pressure balancing.

BEFORE CARRYING OUT ANY MAINTENANCE JOBS IT IS OBLIGATORY TO STOP THE MACHINE AND DISCONNECT IT FROM THE

POWER MAINS AND FROM THE COMPRESSED AIR DISTRIBUTION NETWORK.

PRESSURE DISCHARGE PROCEDURE

Proceed as follows:

- Close the taps Ref. 1 Fig. 11

- Release the pressure in the dryer by pressing the condensate drain “TEST” pushbutton locate on the steam trap

Ref. 1 Fig. 11

- Switch off the machine by pressing the STOP button Ref. 3 Fig. 11

- Turn on the supply automatic differential switch Ref. 4 Fig. 11

CALIBRATIONS

BYPASS VALVE FOR HOT GAS

N.B.These valves have already been calibrated and they do not require any adjistment. A dew point different from the

rated one generally depends on causes which are not attributable to their operation.

Ref. 1) Closing cap

Ref. 2) Adiusting screw

WORKING PRESSURES AND TEMPERATURES OF R404A

SUCTION SIDE OF

REFRIGERATION COMPRESSOR

Evaporat.

Temperat.

°C (°F)

Evaporating

Pressure bar (psi)

RATED VALUES

(Temperat.

20°C – 68°F)

1 ÷ 2

(33,8 ÷ 35,6)

R404A

4,3 ÷ 4,5

(62,3 ÷ 65,2)

FIG. 11