PMS 4500 FCB Manual - Ysebaert

Installation Instructions
Anti-freeze
In the interest of safety, the freezing point of the closed circuit coolant should be checked on
regular basis. Be sure that the coolant/antifreeze mixture is good for at least -15°C (5°F) and if is
possible that your genset experiences lower temperatures, for example during storage or transportation,
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.
Again de-aerating process in the few days after the first startup
Also after the first implementing a small amount of air can be reside in the cooling circuit. To
ensure an imaculate und actual operating of the cooling system the de-aerating process must be
repeated casual in the next few days (if necessary weaks). Small amount of air will be still exit out
of the de-aerating openings especially if the generator stood still for a long time.
ATTENTION! During the de-aerating process it must be checked again and again if the
cooling water is indeed circulating. If air bubbles established in the internal cooling water
pump, it could be, that the cooling water circuit is not circulate. Then the generator would
be warming very fast and switched off by overheating.
D.4.5
Pressure test for control of cooling water circuit
Check with the hand if a temperature difference exists whether between cooling water in-flow and
cooling water return.
Feel the cooling water in-flow line at the internal cooling water pump.
Feel the cooling water return pipe either at the outlet of the water-cooled exhaust elbow union or
at the side, where this pipe entry at the heat exchanger.
The temperature difference between in-flow and return is approx 10 degrees.
15.7.05 PMS_4500_FCB_manual.V02 - Chapter D: Installation Instructions Page 47