Repair | 11
Operating instructions CMVpro 125-400 | Version 1-en
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11.8
Measuring and setting impeller position
NOTICE
Risk of damage due to grinding impeller
Damage to impeller.
u
Set the impeller position using distance X specified in the table.
u
Conduct measurement checks periodically.
u
Determine grinding point.
X
1
Y
Fig. 39:
Measuring impeller position (sectional view)
The overlap Y of the inlet cover taper and the impeller cannot be measured di-
rectly. Instead, the distance X from the inlet connection to the impeller support
disc is measured according to the table below.
As an aid, place a wooden board (1, see illustration) across the inlet connection.
Fan/size
Distance X [mm]
Overlap Y [mm]
CMVpro 125
136
4
CMVpro 160
174
5
CMVpro 200
221
6
CMVpro 250
252
8
CMVpro 315
323
10
CMVpro 400
413
13
Procedure:
1.
Prepare fan for measurement:
• Loosen sleeve at the inlet connection.
• Remove ductwork end at the inlet connection.
2.
Conduct measurement according to figure 39.