SP08 - 第16页
11. Check the length of the carbon head remaining, if less than 6mm the brushes require replacement. 12. With the brushes out, inspect the motor commutator for signs of wear, carbon deposit build up or short circuits. Cl…
8. Remove the “Air Out” flexible hose from the motor enclosure, this allows
the top cover of the motor enclosure to be removed exposing the motors.
9. Remove the spring clip from the brushes, remove the black cover from each
motor.
10. Remove the bracket from each brush, disconnect the electrical connection
and remove each brush housing.
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DEK VACUUM AND FILTRATION UNIT SP08
INSPECTION AND REPLACEMENTS
Plastic Motor Cover
Figure 5 Motor Cover
Spring Clips
Brushes
Figure 6 Spring Clips and Brushes
11. Check the length of the carbon head remaining, if less than 6mm the brushes
require replacement.
12. With the brushes out, inspect the motor commutator for signs of wear,
carbon deposit build up or short circuits. Clean as appropriate.
13. Refit the motor enclosure to the vacuum unit in the reverse order, ensure the
“Air Out” flexible hose is secure on the exhaust (positioned on the rear right
hand corner).
14. Reconnect the vacuum unit on the machine and copnnect mains power.
15.
Enter Diagnostics and select Screen Cleaner, to test operation of the unit.
NOTES:
1. When changing carbon brushes, BOTH brushes must be changed at the
same time, ie a pair of replacement brushes contain one Auto Stop and one
Standard brush.
2. It is also advisable to bed the new carbon brushes in by running the
motors at 50% speed for 10 minutes.
14 DEK Printing Machines Ltd Issue 3. Nov 00
DEK VACUUM AND FILTRATION UNIT SP08
INSPECTION AND REPLACEMENTS
Minimum Brush Length
6mm
Figure 7 Brush Length
Filter Replacements
General An indication that a filter is in need of replacement is when:
•
An odour is apparent - requiring an ozone filter change.
•
Loss of suction - indicating one of the three filters is blocked.
NOTES:
1. Dependant on the duty cycles and the type of solvents that are use in the under
screen cleaning process, it is advisable that the ozone filter is replaced after a
period of 6 months.
2. If only water-based solvents are used, then it is recommended that the ozone
filter be replaced annually, as a minimum.
WARNING
PROTECTIVE GLOVES AND FACEMASK SHOULD BE WORN AS
THE FILTERS MAY CONTAIN TOXIC DUST.
Fabric Pre-filter Located at the base of cabinet, Figure 1 refers.
Tools Required: 1x Pozidrive screwdriver
1. To gain access to the Fabric Pre-filter, see General Servicing and
Maintenance Information, Access.
2. Unplug the motor unit from control box and raise control box to the vertical.
3. Pull off the internal link hose on top of motor unit.
4. Lift off by-pass cooling assembly.
5. Lift off motor unit (via central pick-up point).
6. Lift off the fabric filter 3rd stage filter.
7. Lift off ozone filter (via the integral handles).
8. Pull out fabric pre-filter.
9. Reverse procedure to replace.
Ozone Filter Located central in cabinet, Figure 1 refers.
Tools Required: 1x Pozidrive screwdriver
1. To gain access to the Ozone filter, see General Servicing and Maintenance
Information, Access.
2. Unplug the motor unit from control box and raise control box to the vertical.
3. Pull off the internal link hose on top of motor unit.
4. Lift off by-pass cooling assembly.
5. Lift off motor unit (via central pick-up point).
6. Lift off the fabric filter 3rd stage filter.
7. Lift off ozone filter (via the integral handles).
8. Reverse procedure to replace.
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DEK VACUUM AND FILTRATION UNIT SP08
INSPECTION AND REPLACEMENTS