Preliminary Checks - Parker ATT Serie Manual De Uso

4 Commissioning

4.1 Preliminary checks

Before starting the dryer, make sure:
• installation was carried out according that given in the section 9.2;
• the air inlet valves are closed and that there is no air fl ow through
the dryer;
• the power supply is correct.
4.2 Starting
Before starting the dryer follow the following instruction:
• Switch the power on by turning the MAIN SWITCH (IG)
ON".
• the crankcase heater will now start heating
!Y
THE CRANKCASE HEATER MUST BE SWITCHED ON 12
HOURS BEFORE STARTING THE DRYER.
Failure to comply with this rule may cause serious damage to the com-
pressor.
• Shows the "MAIN SCREEN VIEW on display.
Start the air compressor.
Start-up procedure dryer:
Press
to enter on "Main Menu"
Select START/STOP
and confi rm with Enter
Select:
NORMAL START/STOP
and confi rm with Enter
Confi rm START, for the start-up
"Compressed Inlet Air" pressure
INSUFFICIENT AIR PRESSURE
insuffi cient, dryer blocked.
English
!Y
Attention: The air compressor must be started before the
dryer. Otherwise you may damage the electric resistance.
The fi rst start-up is in "Forced Regeneration" on default.
The unit works for a complete cycle (2 columns), after switches to normal
working.
Y
It is recommended to complete this type of starting with the air
outlet valve closed, to preserve the correct operation of the desiccant
bed.
4.3 Operation
Leave the dryer in working during the period of working of the air com-
&
to "
pressor.
• The dryer works automatically, calibrations are not required on the
fi eld;
• if there are excessive and unexpected air fl ows, by-pass to avoid
overloading the dryer.
4.4 Operation with Dew point control
In the case of work loads below the nominal or if you want different dew
point of -40 ° C, it is possible to work in Dew Point Control. The system
automatically controls the time of the cycles of operation to obtain and
maintain the predetermined dew point, with the result of energy saving in
case of work with partial loads.
Procedure to set "dew point control".
Press Prg to enter on main menu
Using Up and Down select
- - -Main Menu - - -
"USER SETTINGS"
START/STOP
Press Enter to confi rm.
USER SETTINGS
SERVICE
INFORMATION
Shows the "User settings menu
- - -Main Menu - - -
START/STOP
USER SETTINGS
SERVICE
INFORMATION
Using Up and Down select
"DRYER SETTINGS"
- On/Off Menu -
Press Enter to confi rm.
NORMAL START/STOP
STOP DIRECTLY
Using Up and Down select
the parameter.
Press Enter to confi rm..
ENABLE UNIT RUNNING
STOP
Select the parameter U1- DEWP.SET (°C) and set the value you need.
Press Enter to confi rm. see Table 1 for identifying the correct value
to be set
Select the parameter U6- DPM: set the mode FITTED. Press Enter
to confi rm.
- - -Main Menu - - -
START/STOP
USER SETTINGS
SERVICE
INFORMATION
- User Settings Menu -
DRYER SETTINGS
DATE/TIME
BMS
MOISTURE DRAIN
OTHER
LANGUAGE
- User Settings Menu -
DRYER SETTINGS
DATE/TIME
BMS
MOISTURE DRAIN
OTHER
LANGUAGE
U1 - DEWP.SET (°C): -40
U2 - PRESSURE (barg): 07
U3 - MODE: Forced Rig.
U4 - ALARM RELAY MODE:
by: ALARMS & WARNINGS
U6 - DPM: NO FITTED
ATT140-340
Table 1
Dew Application
Point
-70°C Request for a very low dew point.
-40°C Request for a very low dew point.
(depend on the type of the process.).
-20°C Request for a low dew point.
When the pipes air compressed are in external envi-
ronment and the minimum winter ambient temperatures
are above -10 to -15 ° C.
-10°C Request for a low dew point.
When the pipes air compressed are in external envi-
ronment and the minimum winter ambient temperatures
are above -5°C.
0°C Request for a dew point standard.
When the pipes air compressed are in external envi-
ronment and the minimum winter ambient temperatures
are above 10°C.
Important: for correct readings, the Dew point sensor must work at
a precise air fl ow, which is adjusted by a fl ow meter (no. 33).
CORRECT CALIBRATION: LEVEL 2 ÷ 5
To ensure optimal Dew point sensor operation, comply with the
maintenance instructions given in para. 6.4.
In this regard, the sensor connection is fi tted with a shut-off valve to
facilitate maintenance
liters/minutes
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