10
Speed Selection –
E. Commissioning
The speed and boost settings are fully adjustable via the potentiometers located on the front of the unit.
However, for ease of adjustment during commissioning there are 4 pre-marked settings to assist in speed selection.
As marked on the unit, the
left hand
potentiometer controls the
‘Normal’
speed, the
right hand
potentiometer
controls the
‘Boost’
speed.
USE THE BLUE POTENTIOMETER DRIVER SUPPLIED WITH THE UNIT.
Turning the potentiometer
clockwise
will increase the speed.
If a purge switch is installed this activates the unit at maximum speed.
Once the MVDC-MS is commissioned, apply white label over marked area containing ‘Boost’ and ‘Normal’ holes to
ensure the potentiometers are inaccessible and that the unit returns to an IP22 rated status.
F. SERVICING AND MAINTENANCE.
This product contains a self-cleaning backward curved impeller that requires no servicing.
The fan has sealed for life bearings, which do not require lubrication.
Setting
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
15%
30%
45%
100%
0
50
100
150
200
250
300
350
400
0
50
100
150
200
250
300
350
400
450
500
Volume (m
3
/h)
1
2
3
4
Pr
e
s
s
u
re
(
Pa
)
Speed
Summary of Contents for Lo-Carbon MULTIVENT MVDC-MS
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