Page 8
Form 403599
Fig. 6 - Printed circuit board 236-13870-1
• The printed circuit board automatically controls the
sequence of the pause and operating times of the 203 central
lubrication pump as a function of the vehicle or machine wor-
king hours tB (Fig. 7).
• The sequence of the pause and operating times is
activated when the machine contact or ignition switch is swit-
ched on.
• A lubrication cycle consists of one pause time and one ope
-
rating time. Once the pause time has elapsed, the operating
time starts to run. This lubrication cycle is repeated perma-
nently after the machine or vehicle has been put into operati-
on. Refer to Fig. 7.
• During the operating time the pump element dispenses the
lubricant to the lubrication points via progressive metering de-
vices.
Fig. 7 - Time sequence diagram
tB - Working hours
T - Lubrication cycle
tP - Various pause times
T1 - Stored pause times
T2 - Operating times
Pause time
• The pause time
- determines the frequency of the lubrication cycles within a
working cycle;
- is started and stopped via the machine contact or ignition
switch;
- is adjustable.
• When the machine contact or the ignition switch is
switched off, the pause times which have already
elapsed as well as the momentary operating conditions (faults)
are stored and added up by an electronic memory (EEPROM)
until the time which has been set on the blue rotary switch is
reached.
• After the machine contact or ignition switch is switched on
again, the printed circuit board operates from the point where
it had been interrupted.
• If the setting is modified within the pause time, the printed cir
-
cuit board takes over the new value only at the end of the
operating time.
•
The pause time setting may be different for each application. It
must be adjusted in accordance with the respective lubrication
cycles. Also refer to ”To set the pause time”.
Fig. 8 - Proximity Switch
Operating time
• A
proximity switch
(initiator) which has been installed on a
metering device instead of a piston closure plug monitors and
brings the pump operating time to a close after all the pistons
of this metering device have dispensed their
lubricant quantity.
• The operating time depends on the system’s lubricant require
-
ment and on the location of the proximity switch (either on the
main metering device or on the secondary metering device).
• During the operating time, the
signal lamp is
permanently
lit.
Monitoring time
• A fixed
monitoring time
of maximum 30 minutes.
Note: Normally, the monitoring time ends at the same time as
the operating time.
•
If there is
no switching off signal
from the proximity switch to
the printed circuit board within 30 minutes, a
fault
signal
will occur.
The signal lamp flashes with the corresponding flashing fre
-
quency. See ”Fault indication”.
