Installation, Operation and Maintenance manual
24
WSO Flex
A complete purpose made WSOflex-controller is manufactured to control the unit’s
operation. The WSOflex-controller is designed with a display to show the lifetime of
the filter element. The display is showing continuously the real-time pressure drop
value over the used main filter element (and optional HEPA) to follow maintenance
of the element (and optional HEPA). Alarms are integrated as well in the WSOflex-
controller to show when a maintenance/replacement of the filter (and optional HEPA)
is required to be executed. Another alarm is integrated as well for a fan/motor failure.
To connect the WSOflex-controller execute following steps:
1. Remove the front cover of the controller to access the terminals.
2. Connect pneumatic hoses: DP coupling MAIN with DP1 and DP coupling HEPA
with DP2.
The DP coupling HEPA has only one tube connected inside the unit.
3. Wire the supply cable according the allocation plan shown in the controller manual.
There are 2 possible manners of controller mounting:
Controller mounted on the unit
Use the supplied hardware to block the holes in the controller back plate as illustrated
in Figure 16.
close holes with screws,
nuts and washers
supply and motor cable
can be used for alarm output
use flex-tubes to connect
MAIN to DP1
HEPA to DP2
MAIN
HEPA
Figure 16: Mounted controller
1. Wire the motor cable to the controller with mentioned terminals (19, 20, 21 and 15)
in the allocation plan.
If a motor starter is used (19, 20 and 21 already connected) connect the motors’
phases to the F1 block (T1, T2 and T3) and the PE (Protection Earthing) to terminal
15.
If an EC fan is supplied, wire the 4 electrical signals according the allocation
plan and terminal diagram in WSOflex controller manual (COM (EC fan) to 8,
GND (EC fan) to 5, Ain1-U (EC fan) to 4 and NC (EC fan) to 1).
