Installation Instruction
23.1.07
Panda_12mini_PMS_Digital_s00865_Installation manual.V02 - Chapter D: Installation Instruction Page 61
Anti-freeze
In the interest of safety, the freezing point of the closed circuit coolant should be
checked on a
regular basis
. Be sure that the coolant/antifreeze mixture is good for at least -15°C (5°F) and if it
is possible that your genset experiences lower temperatures, for example during storage or trans-
portation, then the entire cooling system should be drained and purged. To purge the cooling
system, compressed air at about 0.5 bar (7.5 psi) is sufficient.
D.4.3 Filling and de-aerating of the internal cooling water circuit
c. Fill up the external cooling water expansion tank
with coolant.
ATTENTION: „maximum fill level = „max.“-mark.
The cover of the external expansion tank tem-
porary must be opened (all other closures are now
closed!).
Fig. D.15: Cooling water expansion tank
d. Start the generator
After filling the generator this must be started. During this first phase of start-up, the generator
may not be loaded. Switch the generator off after max. 2 minutes of operation!
3. First de-aerating
The cooling water circuit of the generator must be de-aerated now by multiple repeating of the
de-aerating procedure. During the entire procedure the external cooling water expansion tank
remains opened (i.e. the cap must be removed).
After the first stopping of the the generator wait about one minute until the air in the cooling water
can be drop off and raise to the highest point (ventilation point).
Now open all three ventilation points one after another as long as cooling water exit. Then the clo-
sure screw must be closed immediately. (Turn on only lightly to treat the thread.)
Pay attention that the external cooling water expansion tank is filled with enough cooling water
during the de-aerating. (If necessary refill over and over.)
One de-aerating step will be last as a rule max. 2 minutes and following steps contained:
1. The generator runs approx. 1 minute.
2. Stop the generator.
3. Hold on one minute for drop of air.
4. The collected air is led out over the two de-aeration points.
The ahead described de-aerating process must be repeated as long as after the stopping and
drop off air none air exit out of the de-aerating ports, only cooling water.