Eliminating Faults - Festo DPA Serie Instrucciones De Utilizacion

DPA−...
6 Accessories
Designation
Safety start−up valve:
− for input pressure
− for high pressure
Silencer
Support bracket
Manometer
Compressed air reservoir
Regulator lock
Fig. 12
7

Eliminating faults

Fault
High pressure
fluctuates too
much
The desired high
pressure is not
reached
Flow too low
Pressure booster
does not start
Fig. 13
Festo DPA−... 0309a English
Possible cause
Air consumption of down
stream equipment too high
− Input pressure too low
− Too many consuming
devices on the output
Silencer, tubing or screw
connectors with insufficient
flow used
Insufficient air volume at
compressed air input
Fault in commissioning /un
favourable operating condi
tions (valve in mid−position)
Type
HEL−...
HE−...−D−.../HEE−...−D−...
U−y−B;
U−½−B
HUA−..
DPA−...−MA−SET
VZS−...
LRVS−D−...
Remedy
Use a compressed air reservoir
in accordance with the section "Ac
cessories"
Inrease the input pressure
Use only components of
sufficient sizes
Increase volume at compressed air
input (e.g. with large compressed
air reservoir)
Briefly pressurize switch valve with
a pressure pistol at the exhaust
ports 6 (fig. 1).
17