27
7 Trouble Shooting
In the case of a malfunction, check and observe all instructions contained in
this technical documentation. If necessary, adjust equipment as needed.
Possible faults and their causes are shown below:
E
RROR
R
EASON
S
OLUTION
No air, Shut-Off valve is
closed
Open Shut-Off valve
Valve pin is too short or
missing
Test valve pin length according to
picture:
Actual size of valve Pin
and replace valve pin, if necessary
Screwdriver
does not start
Piston 3804692 caught
in sleeve 3783221
Disassembly and cleansing of
parts
Clutch is not engaged
Mount clutch correctly - refer to:
Range- and exchange of clutch
spring
Air pressure too low
Minimum air pressure should be 90
PSI for maximum performance
Restriction in air hose
Remove bends or other restrictions
Hose I.D. is too small
Use required hose I.D.
Valve Pin too short
Check required length of valve pin
according to picture:
Actual Size of
Valve Pin
. If needed, exchange
valve pin.
Insufficient
Power
Vanes are worn
Exchange vanes
Screen Support or si-
lencer clogged
Clean screen support /silencer or
exchange with new one
Air pressure is too low
for required torque va-
lue
Maintain air pressure of 90 PSI
Valve Pin is too long
Check length of valve pin, either
shorten or replace valve pin (pic-
ture:
Actual Size of Valve Pin
)
Driver does not
shut-off or
ratchets
Piston 3804692 caught
in sleeve 3783221
Disassembly and cleansing of
parts
If necessary, please send tool to DEPRAG for service.
Summary of Contents for 344-340-31
Page 17: ...17 5 1 Spare Parts Drawing ...
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Page 24: ...24 5 2 Installation Tips for Screwdriver Spindle ...
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