REFRIGERANT GAS R-134a
Spheros products only use refrigerant R134a. Using gas
refrigerant with different characteristics, low quality or doubtful
provenance could cause low capacity and damage other
equipment components.
ATTENTION: Under no circumstance can refrigerant be
discharged into the atmosphere.
OIL
The compressor oil must be replaced every time it shows a
change in color.
a) Yellow = normal oil;
b) Black = carbonized oil;
c) Brown = copper attack, due to humidity in the system;
d) Metallic gray = suspended metallic particles.
We recommend the preventive oil replaced every 3 years or
12.000 hours of work, whichever occurs first.
DRIER FILTER
The filter drier must be replaced every time a maintenance is
done and the system lost gas load or was exposed to
contamination. We recommend a preventive filter replacement
once a year.
CLUTCH
When perform cleaning in the clutch take care to avoid dirt
depositing between the faces of the friction disc.
6.1. Preventive Maintenance
COMPRESSOR SEALING
The oil felt seal must be cleaned or replaced whenever it is
saturated.
To avoid leaking of the compressor mechanical seal by lack of
lubrication the air-conditioner system must be in the cooling
mode once every 15 days at least 15 minutes.
AIR DUCTS
The air duct cleaning must be carried out every thee months.
Such time may be reduced in accordance with the use of the
air-conditioner system, the number of people to be transported
as well as the environmental conditions. The owners of the
vehicles are entirely responsible for the cleaning process; they
will be held accountable for any cost resulting from the bad
quality of air offered to their passengers.
Note: Ducts are part of the bus body.
!!! SAY NO TO NON-ORIGINAL PARTS !!!
The use of non-original parts will decrease the efficiency of air
conditioner, overloads of the electrical system may cause
premature compressor failures and even cause fires.
IMPORTANT: The preventive maintenance actions should
be undertaken by the vehicle owner. The failure to carry out
these events may be classified as negligence, thereby
cancelling the warranty.
ATTENTION: Should any problem in the cooling system occurs,
the repair must be carried out by an authorized service station
or an expert.
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