Bühler technologies AHF-22 Notice De Montage page 7

AHF-22
Please note the following points to prevent thermal bridges:
Choose the shortest possible screw connection and shorten
the connection pipe for the sample gas line as much as pos-
sible. To do so, remove the insulation around the sample gas
line. This is done by loosening the fixing bolts.
CAUTION
Fragile
The insulation is fragile. Handle with care, do not drop.
Long sample gas lines may require support clamps along the
way to the analysis system!
If the filter was ordered with calibrating gas connection (mod-
els AHF-22-...-K), this must also be connected leak-proof with a
suitable screw connection. The test gas connection is a 6 mm
tube.
Once all lines have been connected and checked for leaks,
carefully reinstall and secure the insulation.
Perform a leak test with suitable means.
4.3 Electrical connections
WARNING
Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
The filter is equipped with two connectors according to DIN
43650. The connectors are configured to avoid wrong place-
ment. This configuration is not allowed to be changed!
4.3.1 Filter types AHF-22-S, AHF-22-S-K
One connector carries the power supply and the other one the
alarm output. For wiring up see figure in the appendix.
The probe has a self regulated heating and can therefore be
connected directly to the power supply 115 V - 230 V AC, 50/60
Hz.
4.3.2 Filter types AHF-22-xxx-R, AHF-22-xxx-R-K
One connector carries the power supply and the other one the
Pt100 sensor. For wiring up see figure in the appendix. The
power supply is either 115 V AC, 50/60 Hz or 230 V AC, 50/60
Hz (see type plate).
A controller must be ordered separately (see data sheet).
The box containing the controller has terminals to connect the
power supply and the alarm output. For wiring up use the at-
tached diagram (see Electrical connections diagrams filter
AHF-22) with the delivered connector strips. For wiring the
plugs can be separated from the connector and are inserted
back afterwards. Pin assignment is also printed on the circuit
board.
If in certain applications the filter and controller are exposed
to very high heat radiation, a special heat shield must be
provided to protect particularly the electrical controller.
BX410006 ◦ 06/2019
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
5.1 Function of the controller BRS (AHF-22-R, AHF-22-R-K)
After turning on power the filter will be heated. The display
shows the actual temperature. The display blinks until the
preset operation range is reached and the alarm contact is set
to "Alarm". If the temperature range is reached, the alarm
contact switches back and the display is steady.
The nominal value, the operation range and the temperature
unit (°C/°F) are set using the three keys at the controller. The
procedure is described in chapter "Setting of the controller".
5.2 Adjusting the controller
5.2.1 Use of menu functions
Overview of the operational principal:
Use this short description if you have experience with the
device.
Operation is carried out by only the keys with the following
functions:
Key
• Switch from measurement display to main
menu
• Selection of the display menu item
• Accepting the changed value or selection
• Switch to the upper menu item
• Increase of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
• Switch to lower menu item
• Decrease of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
Function
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