Festo — ZSB-1/8-B — 2022-08c
Malfunctions
9
4.
9
Maintenance
9.1
Disassembly
1. Exhaust the entire system and control block for two-hand start.
2. Remove the control block for two-hand start from the system.
9.2
Cleaning
1. Depressurise the control block for two-hand start.
2. Unscrew the screw with the filter element.
Do not lose the seal.
3. Clean the components of the control block for two-hand start only with the following cleaning
agents
Tab. 4 Overview of cleaning agents and cleaning intervals.
Replace the screw with the filter element.
–
Tightening torque: 0.3 Nm ± 40%
7.2 Performing functional test.
Component
Cleaning supplies
Cleaning interval
Housing
Water, maximum 60 °C
If required
Screw with filter element
–
Compressed air
–
Water, maximum 60 °C
–
Petroleum ether
–
every six months or
–
after 100,000 switching
cycles
Silencers
Tab. 4: Overview of cleaning agents and cleaning intervals
10
Malfunctions
10.1
Fault clearance
Malfunction
Possible cause
Remedy
Outlet (2) is depressurised
although both inlets are simul-
taneously pressurised (t
£
0.5 s).
Input pressure too high
–
Reduce the pressure at the
inlet (1
1
) and inlet (1
2
).
Pressure reduction at outlet (2)
takes too long.
Hose connection fault
–
Use short hose assembly.
–
Avoid angle fittings.
Silencer dirty
–
Clean or replace silencer.
Air exit at exhaust (3) if both
inlets are pressurised at the
same time (t
£
0.5 s).
Functional fault
Tab. 5: Malfunction table