Automatic Greasing System
Twin-3
Maintenance
33
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EG1703P03
4. Signal lamp lights
continuously for 2 minutes at
the end of pumping phase.
The state of the pressure switch
did not change from open to
closed.
Possible causes:
a. The primary grease line leaks.
Because of this, no pressure
can be built up.
a. Replace or repair the line and
vent the relevant line.
b. Air pocket in the system.
Within the maximum
pumping time insufficient
pressure is built up.
b. Vent both primary lines and
perform the multiple cycle
test twice (See paragraph
3.3).
c. Broken pressure switch.
pressure switch (valve) and its
cable” on page 41.
d. O-ring damaged or left out
when replacing a metering
unit, pressure switch or blind
plug, causing grease leakage
from line-A to -B and vice
versa.
d. Check and mount a new O-
ring if necessary. Also see
“Procedure when an internal
system leak is suspected” on
page 43).
e. 5/2-way valve broken,
preventing pressure build or
release in primary line-A or -
B. Because of this, no pressure
can be built up or released.
pump and 5/2-way valve” on
page 42.
f. Internal leak of metering unit
or pressure switch valve.
f. Replace the metering unit or
pressure switch valve.
g. Surrounding temperature too
low or grease too viscose.
g. Replace the grease in the
reservoir and bleed the
system.
h. Wiring defect or bad contacts.
h. Check the wiring and
contacts. Replace if necessary.
i.
Other possible cause.
i.
Consult the dealer.
ATTENTION
On request a divergent lamp functionality can be programmed, like:
•
inverted lamp functionality (lamp is switched OFF, where normally switched ON).
•
direct low-level indication on signal lamp (lamp activated for the entire period the level
switch is activated and not only during the pumping phases).
Malfunction
Cause
Solution
