Webasto KK2000 E Installation And Service Instructions Manual - page 25
Roof-Mounted Air Conditioner KK2000 E
Page 25 / 30
b)
Condition of the air manifold plate
– Mounting points/screws are tight
– Ventilation switches in perfect condition.
– Ventilation inlet /outlet screens not damaged, clean
6.7 Maintenance
Work
WARNING
Coolant may never be released into the air (§ 8, CFC
chlorofluorocarbon prohibition from May 06, 1991).
NOTE
Observe the safety information and regulations in chapter
1.4. and requirements in chapter 6.2.
- For maintenance purposes, only use original spare parts
and return the system to the original condition.
a)
For maintenance, as a rule only use the original spare parts or standard parts
listed in Chapter 7.
b)
When work is performed, the system must be returned to its original condition.
6.8
Checks and Work after Initialization
Check the coolant pressure and function of the pressure switch
a)
Check if warm air is flowing
b)
Check the system for leaks
General instructions:
Moisture and air or other foreign gasses in the coolant system cause
disturbances and can damage parts in the air conditioner. Therefore the system
must be carefully dried and evacuated before filling with coolant (at least 1.5
hours). This does not apply to a newly assembled air conditioner, but also to
repairs when the coolant must be drained.
The final vacuum in the system may not be more than 0.005 bar over the
absolute vacuum. The absolute pressure in the system should therefore be
≤
0.005 bar.
The value shown on the manometer for the absolute pressure depends on the
external atmospheric pressure. Note the following:
Coolant can leak through the smallest holes, therefore the coolant system must
be absolutely sealed. To prevent unnecessary loss of coolant, it is
recommended that the sealing be checked repeatedly during the evacuation.
The quick-snap valves are attached to the fittings on the coolant hoses. The
quick-snap valves for the pressure lines or the suction lines differ in diameter so
that they cannot be switched.