18
Low-Temperature Cut-Off of the Lubrication System
The temperature range from 32° F to -2.2° F (0° C to -19° C) is indicated by a blinking ice crystal
symbol (refer to figure 20). In this temperature range, the Timken C-Power lubrication system continues
to operate without interruption.
Please note that in this temperature range, an additional discharge is not possible.
Figure 20
Display with a blinking ice crystal (in this example with
89
% Vol.).
To protect the system from damage, the low-temperature cut-off is automatically performed by the
control system and the built-in temperature sensor.
If the temperature reaches or falls below -4° F (-20° C), the lubricator is switched off by the
low-temperature cut-off and the ice crystal symbol is indicated on the display. The remaining volume
is still displayed in % Vol.
The lubricant will no longer discharge. To prevent damage, please take this into account if your
system continues to operate.
As soon as the temperature rises to -2.2° F (-19° C) or higher, the control system switches the lubrication
system on again. The display shows the remaining volume and the blinking ice crystal symbol.
All discharges (except additional discharges) accumulated during the shut-off will be caught up when
the system resumes operation (at a maximum of two additional discharges with every regular discharge).
6.9
Calculation of the Remaining Discharge Period
Please note that in case of one or several additional discharges, the remaining discharge period of the
lubrication system must be recalculated. This also applies in the event of a cut-off of the lubrication system
due to a long machine standstill such as weekends or holidays, or in the event of a low-temperature
cut-off carried out by the system if temperatures reach -4° F (-20° C). Refer to figure 20. Be sure to note
the resulting recalculation of the remaining discharge period in the lubrication and maintenance schedule.
Formula: R
DP
=
SDP: Set Discharge Period of the lubricator (days, weeks, months)
RV: Remaining Volume (displayed in % Vol.)
RDP: Remaining discharge period (days, weeks, months depending on SDP)
Example of a Calculation of the Remaining Discharge Period
The Timken C-Power with a 250 cc C-Power LV-unit was originally set to a discharge period (SDP) of
eight months, because the lubrication point needs 4.3 cc lubricant /100 h. After two months, the Timken
C-Power indicates a remaining volume (RV) of 75% Vol. At this point, the lubricator is switched off for six
weeks (simulating machine standstill). When it is switched on again, use this formula to determine when
the C-Power LV-unit will be empty.
R
DP
=
= = = 6
The result is a remaining discharge period of six months. After six months, the C-Power LV-unit will be
empty and must be replaced.
89
% Vol.
SDP * RV
100
SDP * RV
100
8 * 75
100
600
100
