Installation Instructions

33
1. Turn ON/OFF switch ON.
r
2. Turn both rotary selectors "tw" and
"
tr
" simultaneously into their
respective central positions.
"SERV" appears on the display.
rr
3. Within 2 s, turn rotary selector "tr"
to the top right range.
"
r
" appears on the display and the
set value flashes.
4. Adjust the control unit to stage 1 or
stage 2 by turning rotary selector
"
tw
".
The display shows:
■ "1" for operation with stage 1
or
■ "2" for operation with stage 2.
5. The set operating mode is saved
when the value stops flashing, and
the control unit returns to standard
mode.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5609 059 GB
Service