11. Setting of mechanical position indicator (option)
Indicator disc rotates approximately 180° at full travel from OPEN to CLOSE
or vice versa.
A suitable reduction gearing was installed in our works. If the turns per
stroke need to be changed at a later date, the reduction gearing may have
to be exchanged, too.
.
Move valve to end position CLOSED.
.
Turn lower indicator disc until symbol
CLOSED is in alignment with the
mark on the indicator glass of the cover (figure L).
.
Move actuator to end position OPEN.
.
Hold lower indicator disc in position and turn upper disc with symbol
until it is in alignment with the mark on the indicator glass of the cover.
12. Setting of the potentiometer (option)
.
Move valve to end position CLOSED.
.
Remove switch compartment cover and, if installed, pull off indicator disc
as described under clause 8, page 11.
.
Turn potentiometer (R2) clockwise to end position (Figure M, page 15).
End position CLOSED corresponds to 0 %, end position OPEN to 100 %.
Due to the ratio of the reduction gearings for the position
transmitter the complete resistance range is not always
utilized for the whole travel. Therefore an external possibility
for adjustment (setting potentiometer) must be provided.
.
Perform fine-tuning of the zero point at external setting potentiometer.
.
When using AUMA power supply unit PS 01 and indication instrument
with percentage scale, perform fine-tuning of zero point at power supply
unit.
.
Operate valve in motor mode to end position OPEN.
.
Perform fine-tuning of maximum value at external setting potentiometer.
.
When using AUMA power supply unit PS 01 and indication instrument
with percentage scale, perform fine-tuning of maximum value at power
supply unit.
.
If applicable, press indicator disc on shaft and perform setting as
described under clause 11.
.
Clean sealing face, check O-Ring, apply a thin film of non-acidic grease to
sealing face.
.
Fit and fasten switch compartment cover.
14
Multi-turn actuators SARV 07.1 - SARV 10.1
AUMA VARIOMATIC
Operation instructions
Mark
Cover
Indicator disc
Figure L
MOV
M
