18
5.5 Regular servicing
Regular servicing helps to maintain the operability and reliability of the humidifier.
All work must be carried out by qualified personnel only. The customer is responsible for verifying the qualifications
of the technicians concerned.
Before commencing work, all power to the humidifier must be switched off.
The following checks should be carried out on a regular basis:
•
Inspect and clean the steam cylinder.
If there are any deposits in the steam cylinder, you should remove the drainage strainer and flush the cylinder
thoroughly with tap water (using no chemical substances). If the electrodes are worn, it is time to replace the steam
cylinder.
•
Inspect the steam, condensate and water hoses.
Check that they are still correctly laid and that the hose clamps are still tight. Check that the hoses are still in good
condition.
•
Inspect and clean the inlet and outlet valves.
If worn, or covered in scale deposits, replace the valves.
•
Check the drainage cup and, if necessary, clean or replace it.
5.6 Service program
The service program of the AT 3000 humidifiers provides you with information on operating conditions and allows you
to set the defaults for the integrated humidity controller (from software version XP16B or higher). Furthermore it
enables you to check the components of the unit. You are advised to check the components on regular basis.
After you have left the service program, the humidifier works in accordance with the operating conditions that were set
originally.
Checking and setting operations:
SE:
Check the Niveau max. sensor
H:
Check the humidistat or presence of controller signal
Hc:
Activate the integrated humidity controller (cf.item 5.7)
rH: *
Set the humidity set point of the integrated hum.controller (cf.item 5.7)
Pb: *
Set the proportional band of the integraged hum.controller (cf.item 5.7)
- -:
If you continue, steam production will be interrupted
h:
Simulation of the humidification signal
I:
Inlet valve
O:
Outlet valve
C:
Contactor
SC:
Self-cleaning system
r1:
Relay for remote collective alarm
r2:
Option: second relay for remote indication
r3:
Option: third relay for remote indication
End:
End of service program
* only visible when
Hc
is activated (
Hc 1
or
Hc 2
)
If you choose
SE, H, Hc, rH,
and
Pb
the humidifier continues to produce steam; for
all other functions (after
- -
), steam production is interrupted.
T
1
T
2
T
3
T
4
T
5
T
6
Fig. 36
!
