Installation, Operation and Maintenance manual
24
PowerCore
®
Dust Collectors - Series CPC
Weekly
1. Open the valve at the bottom of the moisture separator bowl and allow the
collected water to drain off, then close the valve.
2. Connect a manometer to tapping points (refer to Routine inspection) and measure
the pressure drop across the filter packs.
Monthly
Check operation of solenoid and diaphragm valves.
It may be necessary to check the operation of the valves while the system is
pressurised. Care should be taken to avoid injury.
If it is found necessary to replace a diaphragm, use the following procedure (see
figure 11):
Use service kit available from Donaldson.
1. Remove nylon tube (A) by pulling out from valve.
2. Remove the hexagon head set screws and shakeproof washers securing the
valve bonnet (B).
3. The diaphragm and spring (if fitted) can now be replaced, first ensuring the ‘bleed’
hole pin is not blocked.
4. Ensure that diaphragm fits over ‘bleed’ hole pin and that the nylon sealing washer
is inside throat of valve.
5. Position spring (if fitted) inside bonnet recess.
6. Refit bonnet ensuring spring (if fitted) locates over diaphragm disc shoulder and
bonnet locates over ‘bleed’ hole pin.
7. Refit and tighten the hexagonal head set screws and shakeproof washers.
8. Push-fit nylon tube back into valve.
A
B
1
2
1
diaphragm valve
2
manifold
Figure 10: Valve diaphragm replacement
