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Optional accessories, installation and use
Release the key.
The device is now adapted to the flow conditions. It switches to operating
mode, and the devices display now appears as example 1 (Table 7.1).
The adjustment affects the switching point: It is increased in proportion (to a
maximum of LED 7).
As a second step the minimum rate of flow is now set in the purge air
monitoring unit.
The minimum flow rate adjustment may not be set until
after
the normal flow
rate adjustment.
76
D
−
R 800
Allow the minimum flow rate into the system or arrange for an absence of
flow (e.g. briefly - for no longer than 3 minutes - disconnect the purge air
hose from the supply unit).
Press the key and keep it pressed
>
LED 0 lights up and after approx. 5 s starts to flash.
Release the key. The purge air monitoring unit loads the new value and
switches to operating mode.
Error during adjustment
If the device adjustment cannot be performed, all LEDs flash red. After this the
device will switch back to operating mode without changing any values
Error during installation
Read the section "Installing the purge air
monitoring".
Check that all the requirements have
been satisfied.
The difference between the
maximum rate of flow and
minimum rate of flow is too small
Increase the rate of flow differential and
repeat the adjustment.
Sequence of normal rate of flow
adjustment / minimum rate of
flow adjustment
not complied with
Perform both adjustment procedures
again, this time in the right sequence:
1.
Normal rate of flow adjustment
2. Minimum rate of flow adjustment.
Table 7.2: Possible causes / remedies for "Error during device adjustment"
Change the switching point rate of flow
The switching point (rate of flow) is preset to LED 7.
It may be advisable to change this if:
the switching point LED lights up even in normal mode, i.e. the normal rate
of flow is less than the presentation range.
die rate of flow fluctuates greatly or pulses.
a quicker response time by the purge air monitoring unit is desired (lower
switching point = quick response if the rate of flow increases, high
switching point = quick response if the rate of flow decreases).
Briefly press the key.
>
switching point LED starts to flash.
Press the or key as many times as required. Each key depression
moves the switching point display one step in the direction indicated.
Содержание D-R 800
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