Refrigerant Gas R134A; Oil; Dry Filter; Compressor Sealing Part - Valeo DD 430 Serie Manual Del Propietário

PREVENTIVE MAINTENANCE

- Refrigerant Gas R134a

VALEO Climatização do Brasil - Veículos Comerciais S/A products apply for R
134a. The se of different type of gas, low quality or from unknown brands will
cause low performance from the refrigeration and damage the equipment
components.
ATTENTION: under no circumstances, refrigerant cannot be spoiled at the
atmosphere.

- Oil

We recommend you that you shall preventively change the air system oil every
two years or 10.000 working hours, whatever becomes first.

- Dry Filter

We recommend that you shall preventively change the drier filter every 3 years.
Just in case, you need to refill in the equipment with gas, we recommend you
replace to a new filter to extinguish any dirt out of the system.

- Compressor Sealing Part

In order to avoid leakage at the sealing part of the compressor due to lack of
lubrication, then the air conditioning must be working at cool mode for at least
15 minutes, once every 15 days.
The sealing part is lubricated by the compressor oil and in its normal operation
allows a small leakage of 0.05 ml per hour under operation.
Check frequently the reservoir and/or felt then remove the excess of it.
Dispose the old oil as your Country regulations and laws.
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- Ducts

The cleaning of the air ducts must be done every tree months, it can be earlier,
depending on: the frequency of operation of the air conditioning system, quanti-
ty of passengers and resistivity of the environment where it is driven. This
cleaning is the responsibility of the vehicle owner´s only, he is in charge of this
cleaning in order to offer good air quality to his passengers.
NOTE: ducts are components of the bus body.

- Pulley Belts

In order to increase the lifetime of the belts, the strength/stretchiness must be
as low as possible, but working, not leaving them skidding without any friction.
Too low stretchiness on the pulley belts can cause overheat and too much
skidding, causing early break.
Too much stretched belts diminish their lifetime and from roll bearing and from
sleeves, this problem can cause engine interior and compressor damage.
After changing the belts, check their stretchiness back again after 48 working
hours.
It is recommended not use different brands. Install assemblies with the same
diameter/length of the series and do not apply new belts beside old ones.
Putting the assembly into action without one or two belts for a long time can
cause a damage inside the "v" groove of the pulley. It will cause wear in that
"v" groove, so the new belt may not be stretched accordingly.
SAY NO TO RECONDITIONED PARTS
The application of reconditioned parts will diminish the air
conditioning efficiency, will overcharge the electric system causing
early brake of the compressor and set a fire!
DD 430