28
AGL_HP_ST_ZHK1P_EN_Rev00
5.15
Oil level
During the system development, adequate oil return in any operation should be checked what ever
the compressor model. For this purpose, sample compressors equipped with sight t ubes can b e
ordered from Emerson. Oil return check test recommendations are also available on demand f rom
Application Engineering.
5.16
Oil stub
Compressors ZHI27K1P to ZHI46K1P are equipped with an oil Schraeder valve. The torque for the
insert of the Schraeder valve is 5.9 to 6.8 Nm.
For tandemisation, remove the insert with the Schraeder valve and braze the oil equalisation line
into the stub.
Figure 24
Val
ve
Threaded
Braze Ø 9.60-9.78
