| |
 |
| |
Click
Here For Print Friendly Version
|
| |
 |
Automatic
Repressurization Module |
|
| |
| |
| Extreme Thermal
Problems? |
| Long Pipe Run? |
| Flexible Pipe? |
| Exposed Pipe? |
| |
BANISH
SLOW FLOW! |
| |
|
 |
|
| |
|
Truck Stops -
Loading Racks -
Above ground Storage Tanks
Convenience Stores -
Unattended Card Lock |
|
|
Automatically Repressurize!
Eliminate Downtime! ●
Be Ready to sell! |
|
|
|
Vmι
ARM-4073 Automatic
Repressurization Module
eliminates
vapor-pocket
formation! Dispenser slow flow problems caused by extreme thermal contraction,
long pipe runs, and flexible pipe are
automatically
compensated for! The
ARM-4073
automatically repressurizes lines,
preventing
false alarms. |
|
|
|
New!
Externally mounted
bypass switch allows ARM-4073 to be bypassed for annual testing
and during (seasonal) periods when repressurization is not
needed. |
|
|
| ● |
|
Works with any 99 LD-2000 or
99 LD-3000
Vmι
leak detector |
| ● |
|
All Submersibles |
| ● |
|
Compensates for fixed
solenoid delays |
| ● |
|
Automatic repressurization at daily start-up |
|
|
|
 |
|
|
| |
|
|
This device may be
covered by one or more patent applications. -
Designed and Manufactured in U.S.A. |
|
|
|
|
| |
|
Vmι ARM-4073 Automatic
Repressurization Module |
| |
|
All fuel delivery
systems are affected by thermal contraction. Thermal contraction of fuel in a
pipe system results in the loss of line pressure. In extreme conditions this can
occur in a matter of minutes. Pressure loss results in the resetting of
mechanical leak detectors to their slow flow position. For a leak detector to
step through to its full flow position, the pipe must be repressurized. The
repressurization of the line must occur while the leak detector is in a
slow-flow / leak search position to assure EPA hourly line leak detection. When
repressurized in this manner, the leak detector will differentiate between leaks
above the EPA threshold and thermal contraction.
An appropriate amount of time must pass to allow the leak detector to reset if a
leak is present. During installation, this time is determined by taking a
bleed-back (resiliency) measurement of the pipe. Using a table supplied in the
installation instructions, the technician sets the appropriate delay time
between repressurization cycles. By cycling the submersible pump in this manner,
the line stays pressurized, slow flow is avoided and line leaks are identified.
During the repressurization cycle, the ARM-4073 allows control of the
submersible pump run time, 30 seconds or 70 seconds. Easy Installation!
Installation setup to meet site conditions! |
| |
|
Works with
VmI
99 LD-2000 or 99 LD-3000 mechanical leak
detectors - Does not interfere with the operation of
VmI
leak detectors. |
| |
|
Eliminates
dispenser slow flow problems
- Unique timing module allows pump to cycle
automatically, keeping the line pressurized even during
extreme thermal contraction. |
| |
|
Eliminate
need for costly solenoid delay replacement
- Instead of replacing each existing fixed solenoid
delay for each hose, only one ARM-4073 is needed
for each turbine. Each dispenser must have at least a 3
second solenoid delay. |
| |
|
Works with any pumping
system
-
The ARM-4073 operates by controlling the coil of
the pump relay. Installation instructions discuss
integration with station emergency shut-off switch.
Designed for use in a non-hazardous environment. |
| |
|
High
bleed-back in piping system
- Line resiliency (bleedback) can cause a leak detector
to take an extremely long time to step through if it has
reset. Additionally, high resiliency may require the use
of a slow leak detector to detect a leak.
Repressurization by the ARM-4073 overcomes these
conditions to keep the line pressurized and ready to
deliver fuel unless a leak is present. |
| |
|
Aboveground
Storage Tanks
- Piping above grade, exposed to the elements, subjects
the line to extreme thermal contraction conditions. Use
of the ARM-4073 will reduce or eliminate slow
flow problems. |
| |
|
Loading Racks
are magnets for thermal contraction problems. Due to the
exposure of the above ground piping, thermal contraction
can be extreme. When used with a solenoid valve, the
ARM-4073 keeps the line pressurized to the solenoid
valve continuously. |
| |
|
*The ARM-4073
installation instructions must be followed to assure
proper operation. These instructions include a bleedback
table to establish minimum delay times. Upon completion
of installation, a leak detector test is required to
assure proper performance of the leak detector.
(Please see
Vmι
LDT-890 leak detector testing instructions and test
form.) |
|
|
|
|
|
