General Description 6
14
ST16135-00C
Fig. 6.2 - Compressor Assembly
6.3
Compressor Assembly (Fig. 6.2)
The unit comprises of a vertical single stage, oil flooded, rotary,
sliding vane compressor driven by an electric motor mounted to a
base. It is supplied with control panel, starter, and combination oil
cooler/air aftercooler with all accessories piped in and electrically
connected.
The intake cover (A) is assembled directly to the compressor (B)
which is fitted to the flange face of the drive motor (C). A flexible
coupling drives the compressor rotor from the motor drive shaft
enclosed inside the bell housing (U).The motor is bolted to the
vertical column supported by the base.
An electrically driven, impellor type, horizontally mounted fan (D)
is located below the combination oil cooler/air aftercooler matrix
(E). This draws cooling air through the air filter (F) and forces it
through the cooler matrix.
The compressor electronic controller (G) with an LCD screen is
mounted in the starter (J). An emergency stop button (X) is
located on the front controller panel.
For RS models, the inverter drive (H) is mounted inside the starter
compartment, behind the starter panel door (J).
The compressor air intake is protected by an air intake filter (K),
and the oil system is filtered by an oil filter (L). An oil level sight
glass (M) is mounted adjacent to the oil filter.
The compressor is filled and topped up with oil via the oil filler (N).
The sight glass should be full to overflow from the level plug orifice
(O).
Oil is drained from the compressor and cooler by removing the
drain plug (P) and opening the drain tap (Q).
The compressor pressure gauge (R) is visible when the top panel
is removed.
The oil separator (S) located on the top ensures air delivered
through the minimum pressure valve has an oil cleanliness of less
than 3 ppm (parts per million by weight). The air is delivered
through the air delivery pipe (T) to the after cooler (E) before
discharge from the unit.
The oil supply to the cooler is through oil feed pipe (V) with the
cool oil return through oil return pipe (W) For a quick warm up, a
thermal by-pass valve (Y) allows the oil supply to by-pass the
cooler on initial start up.