IM 893-10 • ROOFPAK SINGLEZONE UNITS 134 www.DaikinApplied.com
MaInTenanCe
Scroll Compressor Piping
CAUTION
The compressor must be handled with caution in the vertical
position with a maximum offset from vertical of 15°. The
compressor is delivered under a nitrogen gas pressure
(between 0.3 and 0.7 bars) and cannot be connected as is;
refer to the assembly section for further details.
When replacing an individual scroll compressor on tandem or
trio assemblies, three refrigerant lines must be disconnected
and re-assembled:
1. TPTL Oil Equalization Line
a. This line (Figure 125) contains the oil sight glass.
b. This line connects to each compressor at “rota-
lock” ttings (Figure 126).
c. This line should be disconnected and re-used.
2. Suction Line
a. This is the largest diameter piping.
b. This line is brazed to each compressor.
3. Discharge Line
a. This is the tubing that connects near the top of the
compressor.
b. This line is brazed to each compressor.
Figure 125: Oil Equalization Line
Figure 126: Oil Equalization Line with Rota-Lock Fittings
Figure 127: Suction Tubes
Figure 128: Discharge Tubes
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