Owner's manual

PRESSURE
REGULATOIUFILXR
,
1/4$zLIPT
CONNECTION
SHUT-OFF VALVE
1
I
VIEWA
POWER POSITIONER
CURRENT TO PNEUMATII
,.A..\,sY”TCD ,.m
WITH
C SIGNAL
CyI”“S”lS” ,.i)
AIR
FILTER
/
15 FEET
MAXIMUM
a.
SHUT-OFF VALVE
-j ZPHRAGM
?-?O PILOT
--j VALVE
VIEWS
POWER POSITIONER WITH
PNEUMATKZ CONTROL SIGNAL
AIR
FILTER
15 FEET
MAXIMUM
Figure 2-4. Air Piping Schematic
Air Line Reauirements. Installation of air falter
is necessary for proper power positioner
operation. A manual shutoff valve should be
installed in the air supply line before the air
filter, Figure 2-4. The air filter will remove finely
dispersed water or oil droplets, preventing pilot
valve stem from sticking.
Refer to your model number and model number
matrix (Table l-l) to determine signal air
pressure reqdred.
b.
Supply Air and Signal Air Connections. Basic
schematics are shown in Figure 24. The
installation of the air fdter is as follows:
If your unit is not equipped with an I/P signal
1. Mount bracket for air filter directly on the
convertq install a separate signal line as shown
back of the stand assembly. If this is
in Figure 2-4 View B. The power positioner can
unsuitable, mount air filter within 15 feet of
accept different ranges of signal air pressures.
power positioner.
18-102-204
2.4