Bauer Kompressoren Verticus 5 - Fig. 28 Automatic Condensate Drain Unit IK18.1; Fig. 29 Drain Valve 2 Nd Stage, IK18.1

Instruction Manual w VERTICUS 5 Compressor Units
A-24
 A bracket for mounting the drain unit on the com
pressor block or on the unit.
 Three electrical timers (part of the compressor control
or built in a separate housing for units without com
pressor control).
The solenoid valve for the the second stage is controlled by
timer K10.1, condensate drain valves of the intermediate
separators after the 3rd and 4th stages is controlled by
timer K10.2, the solenoid valve for the condensate drain
valves after the 5th stage is controlled by timer K10.3.
Fig. 28 Automatic condensate drain unit IK18.1
1
2
3
4
5
7
6
8
1 3/2-way solenoid valve, 3rd/4th stage
2 Control medium connection
3 Condensate drain valve 3rd stage
4 Condensate drain valve 4th stage
5 Condensate drain valve, oil and water separator 5th
stage
6 Manual condensate drain tap
7 Condensate inlet connection (tube connector)
8 3/2-way solenoid valve, 5th stage
Fig. 29 Drain valve 2nd stage, IK18.1
1
2
3
1 Condensate drain valve 2nd stage
2 Condensate inlet from separator
3 Condensate outlet to collector
Operation
The condensate drain valve for the 2nd stage (1, Fig. 30) is
a normally open 2-way solenoid valve; the drain valves for
the 3rd, 4th, and 5th stage are operated pneumatically via
normally closed 3/2-way solenoid valves (5) and (6). All
solenoid valves are controlled by electrical signals from the
compressor control system. The required control medium
for solenoid valves (5) and (6) is taken from the intermediate
separator after the second stage.
Before compressor start, condensate drain valves (1), (2)
and (3) are open, (4) is closed by spring pressure.
At start-up of the compressor, solenoid valve (1) is ener
gized and closes, (5) is energized and opens, whereas
3/2-way solenoid valve (6) is not energized and remains
closed. Control pressure builds up and is applied to con
densate drain valves (2) and (3). The servo-pistons (7) are
pressed onto valve seats (8) and the condensate drain
valves close.
The condensate drain valve (4) is not pressurized by the con
trol medium and remains closed by spring pressure and the