Maintenance
9 --- 39
9.9 Venting the compressor unit
Switch off the compressor unit (see chapter 8.4).
Lock the main disconnect in the ”off” position in accordance with ap-
plicable lock out/tag out procedures to ensure the compressor does
not restart.
Lock the isolation shut--off valve in the ”closed” position and vent all
compressed air trapped between the compressor and the isolation
shut--off valve in accordance with applicable lock out/ tag out pro-
cedures.
The oil circulation system of the compressor package vents automatically.
Venting the oil separator tank:
1
2
3
4
9
11
12
10
5
B
A
low
high
a
b
c
8
7
6
1 Ball valve 4 Filler plug 8 Maintenance hose (6---8)
A shut (oil top --- off) 9 Oil level indicator
B open 5 Oil separator tank 10 Hose coupling
2 Pressure gauge 6 Nozzle 11 Ball valve (oil drain)
3 Hose coupling 7 Ball valve 12 Hose coupling
Remove cover panel (3, siee chapter 9.2).
The pressure gauge (2) on the oil separator tank must indicate zero psig.