Service manual LIMAX
120
Service manual version 1.00
page 26
The main controller PCB (1, Fig. 4.) and blower controller PCB (2) are located on top of the
VAC. The high (3) and low pressure (4) flow sensor measure points are located on the air
outlet tube (6). The connecting tubes should never be switched the other way round otherwise
flow sensor measurements would be false. The main power supply connector (5) is located at
the bottom.
Fig. 4.9a VAC left side view
1
main controller PCB
4 low pressure point
2
blower controller PCB
5 main power supply connector
3
high pressure flow point
6 VAC air outlet tube
4.9.1
VAC filter
The VAC filter provides two different connections for suction tubes with a diameter of 10 mm
(1, Fig. 4.) and 22 mm (2). The filter status is measured constantly via 3 contacts (3) on the
rear side and shown on the LIMAX
120 display. Exact remaining filter capacity can be read in
the SERVICE menu (see chapter 9.5).
Fig. 4.9b VAC filter
1
10 mm connector
3 Contacts
2
22 mm connector
3
