2
APP-001b
APR 2007
MOUNTING INSTRUCTIONS
Mount the AUTO-PURGER Plus securely on a wall or
sturdy steel channels capable of supporting 450 lbs (205
Kg). Eight mounting holes in the frame are provided to
support the unit. See Figure 1. The unit should be located
in an accessible area, but away from moving equipment
that could accidentally come in contact with the purger.
Elevation with respect to condensers or high-pressure
receivers is not critical. Do not punch access holes in the
top of the control cabinet. Unused electrical entrances
to the enclosure must be sealed to protect the controls
from moisture.
The AUTO-PURGER Plus is normally installed in the
compressor room where it can be monitored, but also may
be installed outdoors where temperatures below freezing
are not anticipated. Outdoor use in areas near falling or
spraying water, or in constant high humidity areas is not
recommended.
Install the float switch assembly on the purger by removing
the packaging material and metal shipping tube. Slip the
float switch assembly over the enclosing tube being sure
the float switch assembly bottoms on the neck on the
enclosing tube. Warning: Tighten the retaining screw such
that the screw tip is in the groove of the neck assembly.
If the float switch assembly is not properly positioned
and retained, the switch may not function.
FOUL GAS PIPING
It is nearly impossible to predict where noncondensible
gases (air) will accumulate. Therefore, purging at several
points on the high-pressure side of the system is the best
method for removing air from the system.
For multipoint purgers, the solenoid valves may be
manifolded into one line to the purger. However, only one
purge point should be purged at a time. Connecting two
purge points together may result in gas flowing from one
condenser to another due to unequal pressure drop, even
though the difference in pressure drops is ver y small,
for example ¼ psi (0.02 bar). The result is that even in
the best of circumstances, only one point is effectively
purged. The best practice is to purge each condenser
and receiver circuit separately.
It is extremely important to install purge points at locations
sure to be liquid free. Also, no liquid traps are desirable
either before or after purge point solenoid valves. See
Figure 2. The line from the purge point on the condenser
to the AUTO-PURGER Plus should not pass through cold
areas where fur ther condensing of the saturated gas can
occur. If this cannot be avoided, the purge line must be
insulated because flooded purge point lines will flood the
AUTO-PURGER Plus with liquid, resulting in a temporar y
halt of noncondensibles being removed.
AUTO-PURGER PLUS APP INSTALLATION DIMENSIONS
Figure 1
SECTION 2 INSTALLATION
LOW PRESSURE SEPARATOR
OIL DRAIN CONNECTION (1/4" FPT)
21.50"
[546 MM]
5.75"
[146 MM]
HIGH PRESSURE SEPARATOR
OIL DRAIN CONNECTION (1/4" FPT)
1" PVC OR 1" FPT WATER BUBBLER
DRAIN CONNECTION.
DO NOT INSTALL SHUT-OFF VALVE
IN WATER BUBBLER DRAIN LINE.
DO NOT RUN LINE MORE
THAN 10' (3 M) ABOVE BUBBLER.
WALL OR
COLUMN
.63"
[16 MM]
OUTLET
.75" [19 MM] CONDUIT KNOCKOUT
FOR REMOTE PURGE
POINT SOLENOID VALVE
CONNECTIONS
.50" [12 MM] CONDUIT KNOCKOUT
FOR POWER CONNECTION
.53" [14 MM] MOUNTING
HOLE (TYPICAL)
4.50"
[114 MM]
31.50"
[800 MM]
7.50"
[191 MM]
16.50"
[419 MM]
1/2" WATER LINE
12.00"
[305 MM]
3.62"
[92 MM]
8.94"
[227 MM]
1/4" FPT GAUGE VALVE
FLANGE UNION
1/2" FPT WATER
BUBBLER FILL LINE
CONNECTION
25.00"
[635 MM]
21.25"
[540 MM]
16.25"
[413 MM]
ACCESS HOLES IN THE TOP
DO NOT PUNCH ELECTRICAL
1" FPT SUCTION LINE CONNECTION
TO PROTECTED SUCTION ACCUMULATOR
SHUT-OFF VALVE
1/2" FPT FOUL GAS LINE CONNECTION FROM PURGE POINTS
ON HIGH PRESSURE CONDENSERS AND RECEIVERS
1/2" FPT LOW-PRESSURE PUMPED-LIQUID LINE CONNECTION
1/4" FPT GAUGE VALVE
1/2" STRAINER
FLOW REGULATOR
1/2" STRAINER
SHUT-OFF VALVE
1/4" FPT GAUGE VALVE
BUBBLER
2.50" [64 MM]
1.00"
[25 MM]
TYPICAL
1.50"
[38 MM]
4.19"
[106 MM]
12.00"
[305 MM]
8.62"
[219 MM]
1/2" FPT LOW-PRESSURE LIQUID-RETURN LINE CONNECTION
10.00"
[254 MM]
1/4" MPT CONNECTION
FOR WATER PURGE LINE
35.00"
[889 MM]
RELIEF VALVE
3/4" FPT
11.00"
[279 MM]
TO CUSTOMER SUPPLIED CONTAINER
CONTROL CABINET
SHUT-OFF VALVE
WATER PURGE LINE
SHUT-OFF VALVE
1/2" STRAINER
