Control Unit - Graf one2clean+ Instruction For Operation And Maintenance

4. Control unit

4.1 Connections to the KL24plus control unit
The figures below show the basic structure of the switch cabinet of a two-tank system.
Connection 6 mm
for level sensor
sludge lifter
discharge lifter
(two tank systems)
The following connections can be found on the switch cabinet:
1. 230V AV ~ 50 Hz mains connection, for con-
necting the control unit to a socket
2. Compressor connection, for connecting the
compressor to the control unit via an integrat-
ed two pin plug
3. Compressor's air connection. This is used to
connect the strip of valves integrated in the
switch box to the compressor
4. Hose connection (19 mm) for connecting the
aeration unit
5. Hose connection (13 mm) for connecting the
discharge lifter
6. Hose connection (13 mm) for connecting the
sludge lifter
7. One unused hose connection
4. Control unit
Compressor
Control unit
Y4 Y3 Y2
aeration
Figure 3: EPP cabinet with 3-way air distributor
8 / 40
Compressor connection
Connection for power supply
Figure 4: Air distributor with stepped motors