RT-SVX36G-EN
105
Unit Start Up
•
Turn the 115 volt control circuit switch 1S1 to the “Off” position. It is located in the secondary
of the 1T1 transformer.
•
Turn the 24 volt control circuit switch 1S70 to the “Off” position. It is located in the secondary
of the 1T2 & 1T3 transformers.
•
Turn the “System” selection switch (at the Remote Panel) to the “Off” position and the “Fan”
selection switch (if Applicable) to the “Auto” or “Off” position.
•
Check all electrical connections for tightness and “point of termination” accuracy.
•
Verify that the condenser airflow will be unobstructed.
•
Check the compressor crankcase oil level. Oil should be visible in the compressor oil sight glass.
The oil level should be 1/2 to 3/4 high in the sight glass with the compressor “Off”.
•
Verify that the compressor discharge service valve and the liquid line service valve is back
seated on each circuit.
Do not start the unit in the cooling mode if the ambient temperature is below the following
minimum recommended operating temperatures:
Standard unit with or without HGBP -
+55 F for 20 & 40 Ton
+50 F for 25 & 30 Ton
+45 F for 70 thru 130 Ton
+35 F for 50 Ton
+30 F for 60 Ton
Units with Low Ambient option without HGBP - 0°F
Units with Low Ambient option with HGBP - +10°F
Note:
To prevent compressor damage due to no refrigerant flow, do not pump the system down
with the compressor(s) below 25 PSIG under any circumstance.
•
Check the supply fan belts for proper tension and the fan bearings for sufficient lubrication. If
the belts require adjustment, or if the bearings need lubricating, refer to the Service/
Maintenance section of this manual for instructions.
•
Inspect the interior of the unit for tools and debris. Install all panels in preparation for starting
the unit.
Electrical Phasing
Unlike traditional reciprocating compressors, scroll compressors are phase sensitive. Proper
phasing of the electrical supply to the unit is critical for proper operation and reliability. Color paint
dots on the terminal block should match that of the associated wire attached to the lug.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
NOTICE:
Compressor Damage!
Do not allow liquid refrigerant to enter the suction line. Excessive liquid accumulation in the
liquid lines may result in compressor damage. Compressor service valves must be fully opened
before start-up (suction, discharge, liquid line, and oil line).
