Thermo King 098916, Руководство по обслуживанию

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Unit Description, Features & Options
30
Scroll Compressor
The scroll compressor features a digital port and
an intermediate suction port.
Digital Port
The digital port provides cooling capacity control.
The digital port is located at the top of the scroll
assembly on the compressor body. When
energized, the Digital Control valve disengages
the scroll set. This reduces pumping capacity to
zero.
Intermediate Suction Port
The intermediate suction port draws suction gas
from the economizer heat exchanger into the
scroll assembly of the compressor. The scroll
seals off the suction port. This prevents
economizer gas from leaking back to the main
suction port. It also prevents the economizer gas
pressure from influencing the cooling capacity of
the unit evaporator (main suction gas pressure).
Figure 4: Scroll Compressor
MP-3000a Controller
The MP-3000a is an advanced microprocessor
controller that has been specially developed for
the control and monitoring of refrigeration units.
See “Controller Description and Operating
Chapter” for more detailed information.
Compressor Digital Control
Valve
The MP-3000a controller pulses the Compressor
Digital Control solenoid valve between open and
closed positions. This provides precise cooling
capacity control. No pump down function or
warm gas bypass control is used in conjunction
with the Compressor Digital Control valve. See
the “General Theory of Operation Chapter” for
more detailed information.
Figure 6: Compressor Digital Control Solenoid
Valve
1. MP-3000a Controller
Figure 5: MP-3000a Controller
1
AXA0340
AXA0428