Installation, Operation and Maintenance manual
19
DFPRE 4 Dust Collectors
The fan should be inspected every twelve months or immediately following
any misuse.
If inspection reveals any damage then the fan must not be put back into
service until properly repaired or replaced.
Every 2 years
Replace filter cartridges (unless specified otherwise in Scope of Delivery). Refer to
Filter cartridge replacement.
Replace gaskets.
Valve disassembly/reassembly
Do not overtighten pipe connections.
Refer also to figure 9.
1. Switch off the compressed air.
2. Open the clean air access door.
3. Using screwdriver unscrew 4 screws to remove bonnet from valve.
4. Diaphragm assembly is now accessible for cleaning or replacement.
When replacing diaphragm assembly ensure the marking “THIS SIDE OUT”
faces valve bonnet and bleed hole is in alignment with cavity in vlave body
and bonnet. The external contours of diaphragm, body and bonnet must all be
in alignment.
5. Replace bonnet and tighten screws according to torque chart (16 Nm ± 2Nm).
6. After maintenance, operate valve a few times to ensure proper operation.
