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Vertiv I Liebert LPC I User Manual
Figure 3-5 Key service software debugging interface
3.3
Commissioning steps
3.3.1 Terms
Exhaust superheat = exhaust gas temperature - the saturation temperature corresponding
to the exhaust gas pressure
Suction superheat = intake air temperature - the saturation temperature corresponding to
suction pressure (service software for display)
Oil sump temperature superheat = - saturation temperature corresponding to suction
pressure
= The degree of sub cooling condensate valve before the pressure corresponding to the
saturation temperature - temperature before the valve
3.3.2 Check the power supply
Each component corresponding to disconnect breaker, disconnector is closed and control
the total open space, to observe whether the "power alarm phase." If so, check the power
cable connection is valid.
3.3.3 Detecting the electrical heating element
On closing the electric heating breaker, change set-point temperature on the controller. This
will start the electric heater (or manual start) and then check each phase current to ensure
the electrical heating function is on.
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