11
Wireless Pressurized Line Leak Detection
0.1 gph (0.38 lph) Line Leak Test Scheduling - Option
11-4
0.1 gph (0.38 lph) Line Leak Test Scheduling - Option
NOTE: The 0.1 gph Line Leak Test is an optional feature for steel and fiberglass piping types only. This message
will not appear unless the
0.10 On Demand WPLLD
software module key is installed in your system.
This feature allows the user to choose the scheduling frequency of the 0.1 gph tests (See footnote 1 preceding
page):
•
Disabled - No manual or automatic 0.1 gph testing is allowed.
•
Auto - 6 months after the last passed 0.1 gph test. Also enables manual 0.1 gph testing.
•
Manual - 0.1 gph tests run only when manually started.
Disabled is the default setting. Press STEP for Disabled, or press CHANGE to select other choices, then press
ENTER. Press STEP to continue.
Shutdown Rate
This feature lets you shut down the line following a failed line leak test. The choices are 3.0 gph (11.3 lph), 0.2 gph
(0.76 lph), 0.1 gph (0.38 lph), or none.
Note: you must have steel or fiberglass line types, and the
Precision WPLLD
software module key installed in your
system to select shutdown rates of 0.2 gph or 0.1 gph.
Press STEP to accept the 3.0 gph shutdown rate, or press CHANGE until the desired shutdown rate appears,
then ENTER to confirm your choice. NOTE: if you select a 0.1 gph shutdown rate, a failed 0.1 gph, 0.2 gph, or 3.0
gph leak test will disable dispensing. If you select a shutdown rate of 3.0 gph, then only a failed 3.0 gph leak test
will disable dispensing, while a failed 0.2 gph or 0.1 gph leak test will just trigger an alarm. If you select None, no
failed test will shut down the line.
Press STEP to continue.
Pressure Offset
New transducers are now factory sealed and their internal chamber cannot be equalized to atmospheric pressure
by opening a vent screw as in the past. The Pressure Offset test procedure described in this addendum
must
be
performed when using new WPLLD transducers with serial numbers of 100,000 or above, in sites located at
altitudes above 2,000 feet (609 m). Note: this procedure can also be used with transducers having serial numbers
below 100,000 instead of using the vent screw to equalize pressure.
See Table 10-1 on page 10-9 for approximate absolute pressures that are for reference only. The transducer’s
actual reading may vary slightly due to its construction, A/D conversion, head pressure in the lines, etc.
Before this procedure is performed, the pressure in the line MUST be vented to zero. It is recommended that this
procedure be performed immediately after installing the transducer, before energizing the STP.
W1: (WPLLD Line Label)
0.10 GPH TEST: DISABLED
W1: (WPLLD Line Label)
SHUTDOWN RATE: 3.0 GPH