23
2920 1190 05
Instruction book
Industrial Air Division
Remark
It is possible to remotely control following functions:
Function
Action (see strip 1X1-Figs. 6)
Remote start/
Connect a remote start button
programmed stop
(pulse command of minimum 500
ms) between terminals 30 and 31.
Connect a remote stop button
between terminals 30 and 32.
Open switch CMS1 and close
switch CMS2. The start and stop
buttons (8 and 9-Fig. 7a) are made
inactive.
Warning
After connecting as described above, the
compressor is remotely controlled.
3.3 Starting (Fig. 7a)
1. Switch on the voltage. Check that voltage on LED (2) lights
up. The message compressor off appears.
2. Open air outlet valve (AV-Fig. 1).
3. Close condensate drain valve (Dm-Fig. 5).
4. On water-cooled compressors:
-
Check that the cooling water drain valve is closed and
open the cooling water inlet valve.
-
Open the water flow regulation valve; this step can be
overlooked if, after previous operation, the setting of
this valve has not been disturbed.
5. Press start button I (8). The compressor starts running and
automatic operation LED (1) lights up.
6. On water-cooled compressors: regulate the cooling water
flow with the compressor running in normal operating
conditions. Adjust the water flow to obtain the most suitable
air temperature at the element outlet, i.e. between 2°C and
5°C above the relevant temperature in Fig. 15. Consult the
example below Fig. 15.
For optimum operation, the cooling water outlet temperature
must never exceed the value specified in section 7.4.
3.4 During operation (Fig. 7a)
In order to ensure sufficient motor cooling, the doors must be
closed during operation and may be opened for short periods
only to carry out checks.
1. Check the oil level during operation: the pointer of the
level indicator (Gl-Figs. 12) must register in the green range;
if not, press button O (9), switch off the isolator switch
(S0-Figs. 1 and 3a), close air outlet valve (AV-Figs. 1
and 3b), open manual drain valve (Dm-Fig. 5) and wait
until the compressor has depressurized. Unscrew oil
filler plug (FC-Figs. 12) only one turn to permit any
pressure in the system to escape. Remove the filler plug
and add oil until the level reaches the filler neck (adapter
part included). Tighten the plug.
2. If automatic operation LED (1) is alight, the regulator is
automatically controlling the compressor, i.e. matching the
compressor speed to the net pressure, starting and stopping
the compressor whenever necessary.
Warning
When the motors are stopped and LED (1) is
alight, the motors may start automatically.
3.4.1 Checking the display 1) (Fig. 7a)
1. Regularly check the display for readings and messages.
Normally the main display (Fig. 7b) is shown, indicating
the compressor outlet pressure, the motor speed and the
abbreviations of the functions of the keys below the display.
See section 1.4.
2. Always check the display (4) and remedy the trouble if alarm
LED (3) is alight or blinks. See section 1.4.2.1.
3. The display (4) will show a service message if one of the
monitored components is to be serviced; reset the relevant
timer after servicing.
Notes:
-
Whenever a shut-down, shut-down warning, service
request, sensor error or fan motor overload message is
displayed, the free spaces on the display between the
function keys (5) are filled with blinking indicators (**).
-
When more than one message needs to be displayed (e.g.
both warning and service), the messages are
continuously displayed for 3 seconds each.
4. Regularly press the function key (5) below More 2) to call
up information about the actual compressor condition:
-
the status of controlling the compressor (local or remote)
-
the status of the compressor start/stop timer (on or
off) 3)
-
the outlet pressure
-
the compressor element outlet temperature
-
the status of the fan motor overload protection (normal
or not)
-
the total running hours
-
the cooling water outlet temperature
1) Consult the "User manual for Elektronikon regulator", sections
"Status data submenu" and "Service submenu".
2) If the More function is not indicated on the bottom line of display
(4-Fig. 7a), press function key (5) below Menu until function
Main appears above key (F1), then press the function key below
Main.
3) The compressor is automatically started and stopped if these start/
stop commands are programmed and activated; consult the "User
manual for Elektronikon regulator", section "Timer submenu".
