Air Flow - Atlas Copco XAVS 136 Dd Instruction Manual

Instruction Manual
C
OMPRESSOR
(L )
V
(PG)
(OS)
(AR)
(AOV)
(MPV) (NR
V
Fig. 2.4 Regulating system
AF Air Filter (compr. element)
CE
AF Air Filter (engine)
E
AOV Air Outlet Valves
AR Air Receiver
BDV Blow Down Valve
BOV Blow Off Valve
CE Compressor Element
CH Coupling Housing
CV Check Valve
2.5 A
IR FLOW
( F . 2.4)
SEE IG
The system comprises:
AF Air filter
AR/OS Air receiver/oil separator
CE Compressor element
UA/UV Unloader assembly with unloader valve
BDV Blow-down valve
LV Loading valve
Air drawn through the airfilter (AF
(CE) is compressed. At the element outlet, compressed air and oil pass
into the air receiver/oil separator (AR/OS).
The check valve (CV) prevents blow-back of compressed air when the
compressor is stopped. In the air receiver/oil separator (AR/OS), most
of the oil is removed from the air/oil mixture; the remaining oil is
removed by the separator element.
R S
EGULATING
(AF )
CE
(SC)
(VV)
(R )
V
(SV)
(FR)
(BOV)
(UV)
(UA)
(VH)
(BDV)
(CV)
(OF)
(SL)
(FP)
(SL)
)
(OLG)
(DP)
DP Drain Plug
E Engine
F Fan
FP Filler Plug
FR Flow Restrictor
LV Loading Valve
MPV Minimum Pressure Valve
NRV Non Return Valve
OC Oil Cooler (compr. elem.)
CE
) into the compressor element
CE
(L
YSTEM OAD CONDITION
(VI)
(AF )
E
(SC)
(VV)
(SR)
(CH)
(CE)
(TS)
(DP)
OF Oil Filter
OLG Oil Level Gauge
OS Oil Separator
PG Pressure Gauge
RV Regulating Valve
SC Safety Cartridge (option)
SL Scavenge Line
SR Speed Regulator
SV Safety Valve
The oil collects in the receiver and on the bottom of the separator
element.
The air leaves the receiver via a minimum pressure valve (MPV) which
prevents the receiver pressure from dropping below the minimum
working pressure (specified in section 8.3), even when the air outlet
valves are open. This ensures adequate oil injection and prevents oil
consumption.
A temperature switch (TS) and a working pressure gauge (PG) are
comprised in the system.
A blow-down valve (BDV) is fitted in the unloader assembly to
automatically depressurise the air receiver (AR) when the compressor
is stopped.
)
(VI)
(E) (OC )
CE
(F)
(DP)
TS Temperature Switch
UA Unloader Assembly
UV Unloader Valve
VH Vent Hole
VI Vacuum Indicator
VV Vacuator Valve
15