Bus a/c

[kostaskam]

hallo everyone
i work on a city bus with one compressor BOCK FK40 and 2 units.the problem is how the first unit have almost cold air and the other only air.but the pressure is normal.
thanks:)

[Brian_UK]

Is the pressure normal at both units?

[D.D.KORANNE]

The other unit is possibly not getting the refrigerant , solenoid not switched on etc .

[kostaskam]

yes it is the same compressor for bouth units.the pressure is 30psi low and 190psi high.R134a.filters ok expension valves ok oil ok.i dont know what .

[kostaskam]

i see the refrigerant from the glass eye and is full up.

[Brian_UK]

But what are the two evaporators doing?

[kostaskam]

the first evaporator near to compressor is cold but not good and the other nothing.only air