Decommissioning | 6
9045383A OI BlueCool VX EN 7 / 13
l Soiling of the sea water circuit reduces the sea water flow
rate, which decreases the heat dissipation and can result in
reduced performance and high-pressure switch-offs. A sea
water flow that is too low is displayed color-coded on the
screen.
l If the condenser is soiled, the cooling or heating capacity of
the system decreases.
l The sea water circuit must only be cleaned by an expert (in-
staller or Webasto Service Centre).
5.2 Cold Water Circuit
Always check the functional capability of the cold water circuit,
especially after prolonged absence.
l In open systems, check the fill level in the expansion tank at
least once a month, and top up with water/glycol mixture if
necessary.
l In closed systems, check the static pre-pressure in the sys-
tem at least once a month. In the event of a pressure drop,
repair leaks and top up with water/glycol mixture.
l Check the entire cold water circuit for leaks at least once a
month; from the chiller unit through the cold water pump
to the air handlers and, if necessary, the fresh air unit as
well.
l Bleed the system manually at least once a year. To do so,
open the bleeder valves at the air handlers and release air
until liquid emerges with no bubbles.
l Check the water/glycol mixture for adequate mixing ratio
(25% to max. 40% glycol) at least once a year and correct
as needed.
5.3 Damage to the Refrigerant Circuit
WARNING
Danger of explosion
Flammable refrigerant can escape into the installation
space if the refrigerant line of the chiller unit are dam-
aged. Disconnect the system from the power supply,
fully ventilate the installation space, and notify a trained
staff member who is trained in handling flammable re-
frigerants.
6 Decommissioning
If, for example, the air conditioning system is to be decommis-
sioned over the winter, take the following steps:
1. Switch off the system with BlueCool MyTouch.
2. Disconnect the power supply.
3. Completely empty sea water circuit, i.e. sea water lines, sea
water strainer, sea water pump and condenser, or fill with
antifreeze.
4. Check adequate mix ratio of water/glycol mixture in the
cold water circuit and correct if necessary.
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