Thermo King B-100-10, Installation Manual

Page: 56 / 64

56
Charging the Circuit
1. Connect the gauge manifold to the suction and discharge line intakes of
the condenser unit.
2. Connect the refrigerant bottle to the gauge manifold and place it on a
set of scales.
3. Open the refrigerant bottle valve and drain the gauge fitting line .
4. Keep the low pressure side valve of the gauge manifold closed. Open
the high pressure side valve.
5. Add refrigerant until reaching approximately 0.95 kg/2.1 lb of R-134a.
6. Close the refrigerant bottle valve and the high side valve of the gauge
manifold.
7. Start the vehicle engine running at around 1000 rpm and switch on the
unit.
8. Set the unit thermostat at 0ºC/32ºF (see operating manual).
9. Run the unit until it reaches a temperature close to that indicated, and a
high circuit pressure of 12.5 bar / 180 psig for R-134a . Partially
close the air intake to the condenser if necessary.
10. Open the low side valve of the gauge manifold and the refrigerant
bottle valve, and add refrigerant slowly until no bubbles can be seen
through the liquid sight glass.
11. Close the refrigerant bottle and gauge manifold valves.
12. Leave the unit running for 15 minutes.
13. Only if you are installing a unit without electrical standby, turn off the
unit, stop the vehicle and remove the gauge manifold.