6.3A-68002-A01
S
u
b
je
c
t
to
m
o
d
if
ic
a
ti
o
n
s
Page 17 of 20
LINCOLN GmbH Postfach 1263 D-69183 Walldorf Tel +49 (6227) 33-0 Fax +49 (6227) 33-259
Owners Manual
Cobra 501
Fault: No or insufficient lubricant supply with correct position of the lubrication head on the lubrication nipple
Cause
Faulty lubricant supply, e.g. supply pump defective or too
little lubricant in the reservoir, leakage in the lubricant line.
Inlet air pressure too low for the cylinder of the lubrication
head.
Remedy
* Check the inlet lubricant pressure (see 5.2). Check the
supply pump and the lubricant lines.
* Check the air supply system of the cylinder of the lubricati-
on head for leakage.
* Check the COBRA supply air pressure (see chapter 3.5,
5 6 bar).
* Check settings on the regulator M:
pmin=3 bar (oil), 4 bar (grease)
Fault: Pick-up arm (fig. 2, item C) does not move to initial position
Note: In such a case the pick-up arm will be put out of operation by its rated break point in order to avoid major damage.
After remedying the fault, repair the pick-up arm (see 3.5, fig. 5 + 6).
Cause
YM valve (see fig. 2) does not switch back to initial
position:
Remedy
* Check electrical connection between SR position switch
and YM valve.
* Replace valve
Fault: Carriage (see fig. 2, item F) does not move to initial position
Cause
YR valve (see fig. 2) does not connect
Throttle valve K is closed.
Fault in the compressed air supply system.
Remedy
* Check the electrical connections and operation of the YR
valve (switching phase of valve indicated by LED)
* Open the throttle valve K and set the return speed.
* Check the compressed air lines.
* Check the inlet air pressure required (see chapter 3.5,
p = 5 6 bar)
Fault: (for all valves) Valve does not operate although LED is lit
Cause
Valve inlet voltage too low.
Valve defective
Remedy
* Check the wiring diagram and the line routing
* Replace the valve.
Fault: Carriage (see fig. 2, item F) moves too slowly or too quickly into initial position
Cause
Adjustment for return travel too high or too low.
COBRA inlet air pressure too low or too high.
Remedy
* Set the throttle valve M.
* Check the inlet air pressure.
All the repairs which are beyond the knowledge of the users
personnel must be carried out by LINCOLN experts.
Service Address:
LINCOLN GmbH
Abt. Zentraler Kundendienst
Postfach 1263
D-69183 Walldorf
Tel.
06227 330
Fax.
06227 33259
Fault:
Swing-out mechanism of pick-up arm already releases during pick-up of carriage
Cause
Dampening pressure on regulator 2 is too high.
Spring washer kit does not have enough initial tension.
Remedy
* Reduce dampening pressure to less than 0.5 bar.
* Check tightening torque.