Installation, Operation and Maintenance Manual
Unimaster Dust Collectors – Series UMA 40-750
31
MAINTENANCE
3 Explosion risks – Check measures taken to avoid ignition sources are still in
place.
4 Fan maintenance – Inspect the fan thoroughly. This is achieved on UMA 40
collectors by removing acoustic diffuser, if necessary, and looking through
cleaned air outlet; on UMA 40MM collectors by unbolting and removing fan
power pack and inspecting; on all other collectors by unbolting and rotating
fan assembly and looking through fan inlet eye.
If necessary, remove all residual dust accumulation. (Although the fan is
located on the clean side of the collector, it is possible for low quantities of
dust to migrate through the filter media).
The fan should be inspected immediately after any period of
significant dust emission, i.e. due to damaged filter media or seal
etc.
The fan should be inspected immediately if there is any unexpected
noise, temperature or vibration.
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.
Three-yearly
Lubrication – Under normal operating conditions the UMA 40MM power unit
will operate for 6,000 hours (or approximately three years at 40 hours per week)
without attention. After this period the fan bearings should be re-packed with
Shell Alvania ET3 grease (or equivalent) to ensure reliability.
The motor bearings are sealed and therefore do not require
lubrication.
UMA 40MM
Filter assembly removal
1 Isolate electrical supply and remove filter chamber access door.
2 To gain access to the four wing nuts securing the filter assembly, which are
located in the fan chamber, remove the cleaned air outlet cowl or, where
fitted, the absolute filter.
3 Fully slacken the wing nuts and withdraw the filter assembly horizontally
through the front of the collector.
(Filter bag assembly renewal)
4 Remove wire mesh insert frames from individual filter bags. These should
be checked for broken mesh and worn material edgings, especially around
the area of any filter bag damage.
5 Detach filter bag assembly from supporting frame.
