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0508082120/101203/C
Page 7
Owner’s manual
Technical Repair Guide
Technical Repair Guide
WARNING: RISK OF ELECTRIC SHOCK
These servicing instructions are for use by qualified personnel 
only. To reduce the risk of electric shock, do not perform any 
servicing other than that contained in the operating instructions 
unless you are qualified to do so.
This guide contains service checks to assist service personnel 
in locating and correcting any condition that might occur to 
render the air cleaner ineffective or inoperative. The air cleaner 
has been designed with replaceable components, such as the 
high voltage power supply which allows the service person to 
simply replace a component rather than attempt repair of 
components in the field.
8
ADJUSTING TO SPECIFIC ROOM 
CONDITIONS
Program Setting 1: Service Indicator
The Service Indicator is used to predict when the filter will need 
cleaning (electronic air cleaners) or replacement (media air 
cleaners). 
The Service Indicator automatically calculates the service 
interval based on the pollution level selected and the fan speed. 
If the filter becomes clogged the led • and •••• will flash each 
time the air cleaner is turned on.
Pollution level guidelines for establishing setting:
• LOW DUTY: general pollution without tobacco smoke
•• MEDIUM DUTY: moderate tobacco smoke concentrations
••• HEAVY DUTY: high tobacco smoke concentrations
•••• EXTREME DUTY: extremely high tobacco smoke 
concentrations
To select the pollution level:
• Press 
PROGRAM
; you are in the program mode 1 and 
STANDBY
 
led will flash once every two seconds. 
• Default: 
OFF
 (all leds off).
• Press V: led • (
LOW
) will light up, meaning you've set the 
pollution level to LOW DUTY.
• Press V: led •• (
MEDIUM
) will light up, meaning you have set 
the pollution level to MEDIUM DUTY.
• Press V: led ••• (
HIGH
) will light up, meaning you have set 
the pollution level to HEAVY DUTY.
• Press V: led •••• (
TURBO
) will light up, meaning you have set 
the pollution level to EXTREME DUTY.
• If you want to go back to one of the previous pollution 
levels, press W.
• Press 
PROGRAM
 to confirm setting 1 and to go to setting 2.
Program Setting 2: Resetting the Service Indicator
The indicator needs to be reset when the media filter is changed 
out. If led • and led •••• are flashing, it is time to change the 
filter(s) and to reset the indicator.
To Reset:
• Press 
PROGRAM
: you are in the program mode 2 and the 
STANDBY
 led will flash twice every two seconds.
• Default: 
OFF
 (all leds are off).
• If the indicator is programmed (setting 1), you will see all the 
leds switched on in setting 2, provided the Service Indicator 
is in use for a while.
• Reset Service Indicator: press 
OFF
 (all leds are off).
• Press 
PROGRAM
: all user settings are saved and the air 
cleaner is back in normal control.
Program Setting 3: Maximum fan speed for Air Quality 
Analyzer (
AUTO
 mode)
It is not possible to go directly to setting 3.
If the panel button (>> ) and then the 
PROGRAM
 key are pressed 
simultaneously before confirming setting 2, you're in setting 3 
and 
STANDBY
 led will flash three times every two seconds.
Adjusting the maximum fan speed for the Air Quality Analyzer 
is very convenient for meeting rooms and open plan offices.
• Default: •••• (
TURBO
).
• Press W and so on to go to the desired maximum fan speed.
• Press 
PROGRAM
: confirm setting 3 and go to setting 4.
Program Setting 4: Manual lock
In setting 4 
STANDBY
 led will flash four times every two seconds.
Blocking the panel button (>> ), to ensure that non-authorised 
people cannot control the air cleaner.
• Default: unlock; no leds are burning.
• Press W or V: lock; led • (
LOW
) is burning.
• Press W or V: unlock; led • (
LOW
) is off.
• Press 
PROGRAM
: confirm setting 4 and go to setting 5.
Program Setting 5: Voltage output for maximum 
efficiency (Electronic Air Cleaners only)
In setting 5 
STANDBY
 led will flash five times every two seconds. 
This setting can be used to lower the efficiency (up to 10% at 
low HV). This will increase the time between cleaning intervals.
• Default: high HV level (7600 V); leds •, •• and ••• are 
burning.