BeaconMedaes dMED 7 Instruction Book page 14

DD, PD
PDp
1, 8
2, 9, 20
3
4, 16, 19, 22, 23
5
6
7
Description
Compressed air enters water trap (WSD), eliminating liquid water from the air. Next, the air flows through
DD and PD filters, removing contaminating particles and oil mist. The air then enters the CD dryer, eliminating
water damp and producing dry air with a pressure dew point of minimum -31 ˚C (-23.8 ˚F). Next is the QDT
filter where oil vapour and smells of the dried air are reduced (active carbon) and where the conversion of
CO into CO takes place (catalyst in QDT+). Finally the air flows through the PDp filter, hereby eliminating
2
remaining dust particles for absolute purity.
Pressure switch (21) operates as an hardwired alarm in case a failure with the ES-MED controller should
occur. Should the ES-MED fail to operate the compressors, resulting in a decrease of the pressure, each
compressor will start to operate independently once their outlet pressure reaches a certain critical pressure
level (emergency forced local). The pressure switch, installed on the inlet of the dMED, thus linked to the
outlet pressure of each compressor will also be triggered at this pressure level, resulting in a Plant fault being
transmitted to the building management system.
Specifications of the outlet air can be found in section
12
Filter with liquid trap, automatically
drained
Dust filter
Flow restriction
Pressure transducer
Reservoir open to atmosphere
with inlet pipe above fluid level
Valve
Silencer
Shuttle valve
Desiccant
12/ 15 Pressure regulator with gauge
13 Safety valve
18 Non-return valve
21 Pressure switch
QDT1, QDT2 QDT filter (basic version, only
activated carbon) / QDT+ filter
(activated carbon + CO catalyst
(add-on option))
CD1, CD 2 CD dryer
IN Inlet
OUT Outlet
Reference conditions and
Instruction book
limitations.
2920 7099 70