DE / 06-2016 / 1000687
© STULZ GmbH, Hamburg
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Maintenance
STULZ UltraSonic -System for duct humidification ENS 14 A - 18 A-
11.5.1. Replacing the relay PCB
Proceed as follows to replace the relay PCB:
1
Item Description
1
Relay PCB (LWU)
2
Motherboard (CH)
5
Insert the blade terminal into the
new PCB, making sure it is correctly
assigned.
6
Assemble the unit in reverse order.
7
Check that all screws are securely
tightened.
2
To remove the relay PCB, pull out all
blade terminals from the PCB.
3
Pull the relay PCB out along the guide
rails.
4
Push the new relay PCB in along the
guide rails.
1
Perform steps 1-7 from section
"11.5. Inspecting the electrical system"
CAUTION
Marked cables.
When inserting cables later on, there cannot be any
confusion as both the PCB and the cables are
marked.
Note
CAUTION
Trapped cables.
During installation, take care not to trap any
cables between parts of the housing!
IMPORTANT
2
1
Summary of Contents for ENS 14 A
Page 4: ......
