General Description
Webasto Product N.A., Inc.
8
www.techwebasto.com
™
2.9
High/Low Refrigerant Pressure Switch
Located on top of the compressor, the refrigerant
pressure switch will deactivate the BlueCool Truck System
in the event of high pressure or in the event of low
pressure due to a loss of refrigerant.
Figure 10. High/Low Refrigerant Pressure Switch
Switch Points (High/Low Pressure Switch)
High pressure:
326 psi (22.5 bar)
Low pressure:
29 psi (2.0 bar)
2.10 External Thermal Protector – Hermetic
Compressor Motor
110 VAC Device! Lethal current may be
present. Switch off the DC to AC power
inverter before servicing!
The compressor motor is protected from overheating by
a thermal protector mounted on top and in firm contact
with the compressor housing. The thermal protector
device quickly senses any unusual temperature rise or
excess current draw.
The bi-metal disc within the thermal protector reacts to
either excess temperature and/or excess current draw by
flexing downward, and disconnecting the compressor
from the power source.
Figure 11. External Thermal Protector
WARNING
External Thermal Protector
and Cover
Hermetic
Compressor Assembly
