4421 Tradition Trail ● Plano, Texas 75093 ● 972-964-2700 ● 800-836-7472
SP-ENG-211-000-19 Rev 1.0
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ISC uses hermetically factory sealed compressors that are quiet, low vibration and are maintenance free.
Thermal overload devices are installed to protect the compressor from damage due to overheat and short
cycle faults. If the compressor thermal overload fails, it is recommended to return the unit to ISC
customer service for proper replacement. Note that the rotary compressor runs with compressed
refrigerant gas on the outer case and therefore is hot to the touch.
Loss of Refrigerant
DELTA-T air conditioners are meticulously leak and run tested after assembly. If a leak in the system
should develop due to shipping damage or mechanical vibration, the leak must be detected, repaired and
the refrigerant charge restored to the system by a qualified refrigeration professional. If pressure gauges
are connected to the hermetic system, be prepared to replace lost refrigerant resulting from connection
and disconnection. It is recommended to use stubby gauges with low loss fittings to minimize refrigerant
loss.
