Operation And Maintenance Instructions; Dust Disposal; To Remove/Replace Filter Assembly; Inadequate Suction - DCE Unimaster UMA 73 Datasheet

Publication 85B
Cleaned air
outlet
Fan chamber
access panel
Fan
motor
Four
captive
wing-nuts
secunng
filter
assembly
Slide in
guides
Filter
assembly
Filter
chamber
access panel
Cleaner
motor
Shaker
bar
Filter bag
showing wire
mesh insert
lnlet duct
connector
bt
either side
I
/or
at rear)
Ouick-release
sealing
gear
Dust
container
Locating stops
When
ordering spares or accessories
PLEASE
OUOTE SERIAL NUMBER
OF
UNIT
IN
FULL
(See
plate adjacent to
shaker
motor
cover)
DCE
This dust control unit has
been carefully
designed
to
give efficient trouble-free service
provided
the
following instructions
are
adhered
to:
a
Explosion relief
panels,
if
fitted,
should be
vented
to a safe area, Any relief
duct
must be
straight,
as
short
as
possible (3 metres
max.
)
and strong enough
to withstand the pressure of
an
explosion.
a
Do not start the fan
if
access panel(s), filter
assembly
or
dust container are
not in
place
and
fastened.
a
Clean
the
filter
at least
twice
in
a
working
day
(see
OPERATION below).
a
Do not overfill the dust container or allow it to
become too
heavy
for
removal and emptying.
NOTE
_
ALWAYS
ISOLATE
THE
ELECTRICAL
CONTROLS
BEFORE
SERVICING
OPERATION
The
START
button on the
Unimaster FE controller
operates
the fan motor. Dust-laden
air is
drawn into the
unit beneath the filter assembly
as
shown in
the illustration,
heavy particles falling directly into
the
dust container. As
the air passes through the filter the finer dust
is
deposited
on
the outer surfaces of the filter fabric. The fan handles
cleaned air
only, discharging it through the outlet at the
top of the unit.
The
CLEAN
button
switches
off
the fan motor
and
automatically starts the
two-part
cleaning
cycle.
First,
there is a
'dwell' period
of approximately
90
seconds to
allow
the fan to run
down; secondly,
the cleaner motor is
activated
for
about 45 seconds, imparting a
vigorous
shaking action to the filter to dislodge accumulated dust.
lf air were drawn through the filter while
it
was
being
shaken,
the dust, instead
of
being dislodged, would
become deeply embedded in the
fabric
and cause serious
@
OPERAT ON
ET
MA
NTENANCE NSTRUCT
ONS
loss of
suction.
The
two motors
are
therefore interlocked
by the controller
so
that the
fan cannot
be
restarted until
the cycle
has
been completed. Following
a
power failure
the timer automatically
resets
itself
so
that the Unimaster
can
only
be
operated again by pressing the START button.
Full details of the controller are
given in Publication
110.
DUST DISPOSAL
(for
models with container and
quick-
release
sealing gear,
as
illustrated).
a
Release
container
f
ully by raising sealing gear handle.
b
Remove
and empty the container.
c
To replace, slide container back to the
locating stops.
d
Lower the sealing
gear
handle.
TO REMOVE
FILTER
ASSEMBLY
a
lsolate electrical controls and remove both
access
panels.
b
Fully slacken the four
captive
wing-nuts located
in
the
fan chamber.
c
Withdraw complete filter
assembly
through front of
filter chamber.
d
Remove wire mesh inserts
from individual filter
bags.
e
Detach
filter
bag assembly
from supporting frame.
TO
REPLACE FILTER
ASSEMBLY
a
Fit
filter bag assembly into supporting frame, feeding
individual
filter
bags between locating bars, and
fold
collar over peripheral sealing flange.
b
Replace
wire mesh
inserts in
filter
bags.
c
Slide
filter
assembly into the
guides until
bottom
corners of filter bags make contact with the shaker bar.
d
Locate individual
filter
bags in shaker bar.
e
Slide
filter
assembly
fully home and tighten wing-nuts
to form air-tight
seal.
f
Replace
and fasten access panels.
INADEOUATE SUCTION
CAN
BE CAUSED BY:
1
Motor running the wrong
way.
Check
with anow
show-
ing direction
of
rotation, situated on the motor base.
2
Access
panels, filter
assembly or dust container not
properly
sealed.
3
Choked
filter.
4
Dust container overfilled.
5
A restriction
in
the suction ducting or cleaned
air
outlet.
REGULAR
SERVICING
Every 1,000 working
hours (approximately
6 months at
zl0
hours per week) the filter fabric,
shaker mechanism and all dust seals should be checked and any defective parts replaced.
Please ask
for details of the
DCE
Maintenance Service Scheme, which
is
in operation throughout mainland England, Scotland and Wales.
DCE
L M
TED
Thurmaston
LEICESTER LE48HP
England O,
Leicester
(0533)696161
Fax (0533)
693028
Telex 342409 DUSTG