located near the botto m of t he t ransmission housing ( F igure 2A or Figure 2B). The oil must be
pumped from the oil cont ain er through the charg ing valve due to higher refr ige rant pressure.
The pumping device mus t be able to lift from 0 to 200 psig (0 to 13 80 kPa) or above unit
pressure. Oil should onl y be charged or removed wh en the machine is shut down .
Power Up the Controls and Check the Oil Heater
Ensure that an oil level is visible in the compressor before energizing controls. A circuit
breaker in the starter ene rgizes the oil heater and the control circuit. W hen first powered, the
LID should display the default screen within a short period of time.
The oil heater is energ ized by powering the con trol circuit. This shou ld be done several ho urs
before start-up to min im iz e oil-refrigerant mi gr at ion. The oil heater is cont rolled by the PIC and
is powered through a cont actor in the power panel . Starters contain a sepa rate circuit breaker t o
power the heater and the con trol circuit. This s et up allows the heater to energ ize when the
main motor circuit brea ker is off for service wor k or ex t ended shutdowns. The oi l heater relay
status can be viewe d on the Status02 t able on the LID. Oil sump temperature c an be viewed on
the LID default screen.
When the Time/Date is configured for the first time or if power is lost for more than 3 hours,
the oil heater will be energ ized until the oil tem per a ture is at least 100° F (55° C) above the
evaporator temperat ure. See the Oil Sump Temp er at ure Control section f or additional
information. The oil pum p wi ll then energize for 1 to 2 minutes to bring the oil temp erature to