IOM-PGR-2
8
contact. (Also lubricate the threads of the
adjusting screw lightly).
15. Set spring but ton (60.5) onto range spring
(60.15); en sure spring button is laying flat on
top of spring.
16. Rotate the spring chamber (60.2) CW by hand
into the threaded portion of the body (60.1)
ensuring not to cross thread. Continue ro tat-
ing CW until firmly seated against the upper
di a phragm. Tighten to 30-35 ft-lbs (41-47
N-m) torque value.
17. Rotate adjusting screw (60.8) CW into the
spring chamber (60.2) to where the nut
(60.11) comes in contact with the top of the
spring chamber. Stabilizer set pressure
should approach the set point prior to removal
from the piping installation. Retighten nut
(60.11).
18. Pressurize with air and spray liquid leak de-
tec tor to test around body and spring cham ber
for leakage. En sure that an outlet pressure
is main tained during this leak test of at least
mid-range spring level; i.e. 20-80 psig (1.4-
5.5 Barg) range spring, 50 psig (3.4 Barg) test
pres sure min i mum.
CALIBRATION -
If adjustments are necessary proceed with
the following steps:
1. Install a gauge in optional port downstream
of stabilizer.
2. Establish flow as close to normal operating
conditions as possible.
3. Set stabilizer 8 to 10 PSI above set point
(determined at time of order placement).
4. Adjust pilot to obtain desired P
2.
5. If downstream pressure is unstable, adjust
by rotating metering valve in 1/4 turn incre-
ments.
NOTE:
It is important that 1/4 turn
increments are used due to sensitivity.
The P
2
changes can be significant in some
cases.
6. Verify that external sensing is tubed to
tap closest to where control of pressure is
desired.
