18
SILVER M
INSTALLATION
– OPERATING - MAINTENANCE
Frost protection
Frost protection is assured by means of a frost protection sensor,
which must be adjusted depending upon the percentage of glycol in
the media.
Percentage of
glycol
Setting value for
ethylene-glycol
Setting value for
propylene-glycol
20 %
-11
°C
-7
°C
30 %
-18
°C
-12
°C
40 %
-25
°C
-19
°C
The complete frost protection switching (e.g. mixing valve,
circulation pump, louver damper ventilator, heating supply) is to be
checked for function with available frost protection thermostats.
If the temperature near the unit can drop below 5°C, the frost
protection sensor must be installed inside or the exterior frost
protection capillary must be insulated.
The warm water supply to the heat exchanger must be assured even
after switching off of the RAC equipment.
Damage, which is the result of frost impact, is not covered as part
of our warranty responsibility.
Maintenance
-
Allow the heat exchanger to cool down to the ambient
temperature
-
Check lamella-fins for contaminants and clean as necessary
-
Check lamella-fins and piping for damage and comb out
possible bent or warped fins.
-
Check heat exchanger leak-tightness
-
Check feed/return lines for function
-
Check frost protection for function (thermostat by means of
coolant spray)
-
Clean the condensation drain at the cooling radiator, check the
siphon for function and clean at the beginning of the cold
period, then refill
Removal from service
The heat exchanger must be completely emptied for longer periods
of standstill, especially with a freezing hazard. For this, first remove
the bleed air valve screw, then the drain plug. Subsequently blow
out each heat exchanger with compressed air for a complete
purging, as a residual amount of media can remain in the heat
exchanger following a free drainage.
5.7.
Droplet separator
General
The droplet separator will bring its full effectiveness only after a
run-in period of ca. 4 weeks.
The droplet separator is to be cleaned by rinsing with water as
necessary. With large amounts of contamination, cleaning can be
done with a steam jet-spray unit.
An excessively contaminated and calcified droplet separator with a
plugged drip-mould can lead to a droplet run-off and increased
pressure loss.
The droplet separator, possibly located downstream from, and on
the air-outlet-side of the air cooler, as a rule contains lamella-fins
made of PPTV, which are temperature resistant up to +95°C.
Droplet separators are required only if the limiting speed will be
exceeded and a specific condensate volume is present.
When cleaning the droplet separator, remove the cartridges and
lamella-fins (remove bio-film).
During installation, heed air flow direction.
Commissioning
Check the droplet separator installation direction. The drip-mould
must indicate a direction opposite the air flow.
Maintenance
-
Check the droplet separator and condensate tank for
contamination and damage; clean if necessary.
