TM 5-3805-280-24-1
TROUBLE SHOOTING HYDRAULIC
If your dust collector performance is
inefficient though maintained daily, check
the following:
1
Check suction hose for blockages. Clean
any water or dirt from hose.
2.
Check rubber dump valve (or plastic
sack). If wom or otherwise damaged,
change to a new one.
3.
Check that compressor gives OIL
FREE AIR at recommended pressure
7-12 bar (100- 172 PSi) for the filter
cleaning.
4.Pressure indicating switch
Pressure switch is set on 3,5 bar from
factory. Can be adjusted by tuming screw
(left = lower pressure, right = higher). Se
sketch...
4.1Check function of switch by short circuiting the
cables in switch. If cleaning cycle is then started,
switch is faulty. Change to a new one.
4.2 If cleaning does not start when short circuiting
cables, check power supply ail the way up to timer
card in dust collector.
4.3 Check that all cables are unbroken.
5.TIMER CARD
5.1Lift off hydraulic fan top A) to get into the clean
air chamber B).
5.2 Simulate a cleaning cycle by short circuiting
pressure indicating switch as in 4. above.
5.3 Listen if solenoid valve indicates 10
cleaning pulses with 1 sec interval. If not, change
solenoid A).
5.4Check that cables between timer card and
solenoid valves are not damaged.
5.5 If no faults in 5.2-5.4 are found, timer card
is faulty and has to be replaced!
6.
SOLENOID VALVES FOR FILTER
CLEANING
6.1
If solenoid valves allow air to blow
continuously, the diaphragm in valve is
broken. Change!
6.2
If solenoid valves do not open, i e no air
is allowed into the cleaning system, check
hole B) in diaphragm C). If clogged, blow
clean and refit diaphragm into solenoid
valve.
If valves still not open, change the solenoid
A
10-33