© STULZ GmbH, Hamburg
DE / 06-2016 / 1000687
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81
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STULZ UltraSonic -System for duct humidification ENS 14 A - 18 A-
Maintenance
11.5.2.
Replacing the fill valve and float switch
Proceed as follows to replace the float switch:
3
Detach the cables between the float
switches and the motherboard.
2
Fully unscrew the two Phillips screws
next to the float switches.
Completely remove the panel.
1
Perform steps 1-4 from section
"11.4.2. Cleaning the water tank, oscilla
tors and mist outlets" on page 75.
5
Slacken the lock nuts and pull the float
switches downward and out.
4
Check the open/closed signal from
the float switches and replace if
necessary.
Item Description
1
Fill valve
2
Motherboard (CH)
3
Float switch for low water
4
Float switch for water supply
5
Lock nut
a) Float switch for low water
③
FS2
- Upper level: open
- Lower level: closed
b) Float switch for water supply
④
FS1
- Upper level: closed
- Lower level: open
4
3
4
3
Slacken and fully remove the screws.
1
2
6
Check float switches for ease of move
-
ment and replace if necessary.
CAUTION
Interchanged float switches
.
Float switches must not be interchanged!
IMPORTANT
CAUTION
Faulty float switches
.
A faulty float switch can cause irreparable
damage to the unit!
IMPORTANT
5