C 25
12
Regulating
damper
STARTING THE SYSTEM
1.
Turn on the compressed air supply to FilterMax C 25.
Adjust to 0,5 - 0,6 MPa (5 - 6 bar, 72 - 87 psi) of pressure.
2.
Close the regulating damper halfway.
3.
Important!
Check fan impeller rotation direction in the
following way:
• Loosen the fixing screws on the access door.
• Start the FilterMax C 25.
• Stop the FilterMax C 25.
• Open the access door and check through the fan inlet
the impeller rotation direction.
Contact a qualified electrician if the impeller rotation
must be reversed.
4.
Adjust the fan for the proper system airflow that is
desired by adjusting the regulating damper. The air flow
can be measured with a fixed airflow meter (or a pitot tube)
and a micro-manometer.
I
MPORTANT! Too much airflow can dramatically reduce
the life of the filter element.
5.
All the solenoid valves should open and close con-tinuous-
ly with a set interval time between each cleaning pulse (facto-
ry set of 60 seconds). Check operation of the solenoid valves
in the following way: Set the pause time on
tst
(see below).
NB!
This is only a control setting and should not be used for
normal operation. Start the system and count the number of
air pulses. It should be 4 pulses.
WARNING!
Risk of personal injury!
If outlet duct is not mounted, stand clear of
blower fan exhaust area as debris can be
exhausted and cause injury.
Setting the pause time
Push the
P
-button until
pt
is shown in the display.
Set one of the following values for pause times with
the
0/1
-button.
tst
= test position, all valves will be
opened 1 time with 1 s interval.
pt 30
MONITORING SYSTEM, SETTINGS
CLEANING DURING OPERATION
FilterMax C 25 is in its standard design equipped with a fully auto-
matic compressed air cleaning of the filter cartridges. A piping sys
-
tem directs, by a system of solenoid valves, air pulses of 100 ms into
the filter cartridges. The pause time between the air pulses is factory
set at 60 s, but can be set between 5 s and 90 s.
RECOMMENDATIONS FOR PAUSE TIME SETTINGS
The pause time setting depends on the load at which the filter is working.
Light load - A dust that is easy to clean off the filter cartridges, such as dry
stone dust or grinding dust.
Normal load - Applications such as welding fume or light dusts in
heavy concentrations.
Heavy load - Typically metal cutting with laser or plasma and
heavy welding.
With light load the cleaning pressure could be reduced to 0.5 MPa
(5 bar). Check that the filter pressure drop does not rise too quick.
If so, the pause time could be reduced with one step and the cleaning
pressure could be increased, but maximum to 0.6 MPa (6 bar).
Heavy
30 s
Normal
60 s
Light
90 s
Load
The paus time is factory set at 60 s.
tst
10 s
15 s
20 s
30 s
45 s
60 s
90 s
- No cleaning
during operation
