User manual | RVA Rotary valves
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7
3.3.2. Greasing interval
Operating
temperature of
bearing °C
Greasing interval
Environmental conditions
Clean
Dirty
Very dirty
Heavily humid
50
3 years
6 months
3 months
70
1 year
2 months
1 month
100
3 months
2 weeks
1 week
For information on the maintenance of the gearbox and drive motors, see relevant manuals from the original
manufacturers (supplied separately).
3.4
Replacing spare parts
If the rubber blades are not impermeable or worn, they must be replaced. Visual inspection is carried out.
3.4.1 Rubber wear out
Rubber blades are worn out and must be replaced when dimension A and B are below optimal measurements in the
following table (See figure 4).
*
Figure 4. Rubber wear out
3.4.2 Replacing the rubber blades
CAUTION
! Before any manipulation to the rotary valve, make sure that the motor is stopped and that all electrical
connections are disconnected.
NOTE
: all electrical manipulations should be performed by qualified personnel only.
Step 1 : Unscrew the nuts and bolts holding the rubber blades.
Step 2 : Take the rubber blades out.
RVA size
A (mm)
B (mm)
RVA1
32
10
RVA2
38
10
RVA3
38
10
RVA4
38
10
RVA5
38
10
