Siemens POWERS 134-1861 Technical Instructions page 7

POWERS Controls 134-1861 Humidistat
Low Range Stop
Dial Lock
Siemens Industry, Inc.
1. Set the adjustment knob to the minimum desired RH setting.
2. Pull the adjustment knob off the humidistat cover.
3. Loosen the bottom cover screw and remove the humidistat cover.
4. While holding the dial firmly in place, keep the setting in line with the calibrating
mark, press Tab B (see Figure 7) and rotate it clockwise until it is against the
stop pin C.
5. Release the tab making sure it fits into the nearest notch.
6. Replace the humidistat cover, tighten the bottom cover screw, and replace the
adjustment knob.
7. Rotate adjustment knob to desired normal operating setpoint.
Figure 7. 134-1861 Humidistat Range Tabs and Stop
The high and low range stops can be set to keep the adjustment knob from rotating. To
lock the dial:
1. Set the adjustment knob to the minimum desired RH setting.
2. Pull the adjustment knob off the humidistat cover.
3. Loosen the bottom cover screw and remove the humidistat cover.
CAUTION:
Equipment damage hazard.
Avoid contact with the human hair sensing element. Contact
with the hair element can affect control accuracy and/or
product life.
CAUTION:
Equipment damage hazard.
Avoid contact with the human hair sensing element. Contact
with the hair element can affect control accuracy and/or
product life.
Technical Instructions
Document Number A6V11435226
May 9, 2019
Page 7