Installation, Operation and Maintenance Manual
Unimaster Dust Collectors – Series UMA 40-750
35
MAINTENANCE
UMA 750
Filter bag assembly renewal
Due to the weight of the mattress assembly, it should not be removed
without using the support frame provided.
1 Isolate electrical controls and open front access doors.
2 Remove the mattress support frame from its storage position in the fan
chamber or on the top plate of venting type collectors, and assemble into
door frame (see fig. 15).
3 Lower the mattress assembly using the extended nuts on the front of the
door frame.
4 Slide the mattress assembly out of the collector onto the mattress support
frame.
5 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.
6 Detach filter bag assembly from supporting frame.
7 Fit new filter bag assembly into top frame, feeding individual filter bags
between locating bars, and fold collar over peripheral sealing flange.
8 Prior to fitting wire mesh inserts, any material edgings that need replacing
should be fitted around the three edges of the insert that do not have the
insert frame joint. The inserts should then be fitted, edging first, into the filter
bags.
Side member
Front member
Runner
Seal frame lug
Front member
Strut
Assembly for bag and top
frame installation
Lower member (on inside of door frame)
1265
915
940
16
7
Figure 15 Assembly of UMA 750 filter support frame
