Vaporless ISM-4080 User manual

1
Quality Petroleum Equipment
Solutions for Over 30 Years
ISM-4080
Electro-Mechanical
Line Leak Detection
Installation & Operation Manual
Rev. 11/11/2020

2
I. System Concept:
The ISM-4080 Integrated Shutdown Module monitors pressure on multiple lines with multiple turbines
and ensures stable line pressure by monitoring line pressure through a switch attached to the LD-2000 or
LD-3000 MLLDs, starting the submersible turbine pump (STP) to check the line when low pressure is
detected in the line.
Line leak detection is needed for protecting assets and meeting regulatory compliance. The most common
and frustrating problem with any leak detection system is false alarm slow flow. At a station, when not
transferring fuel, the pressure in the underground piping system may fall due to thermal contraction of the
fuel within the line, causing vapor pockets to form, affecting all line leak detection systems. This condition
can create false alarm slow flow or missed line leaks. This condition is prevented in real time by the ISM-
4080. In the event of an actual leak, the device has alarm and shutdown capabilities.
In a manifold piping system, multiple turbines starting simultaneously overrides 3GPH line leak detection.
To alleviate this issue, the ISM-4080 will authorize one pump first, allow one leak detector to search for
a line leak, and then (after the line has been cleared/passed) start the additional submersibles at delayed
intervals.
The ISM-4080 includes the following features:
•Automatic fuel line re-pressurization
•Line leak monitoring
◦Up to (4) lines
•Sequence turbine control for manifold applications
◦Combinations up to (4) pumps
▪(1) line with (2, 3 or 4) pumps, (2) lines with (2) pumps
•Supports (2) control valves
◦Transition sump solenoids in marina applications
◦ Underground to aboveground transition solenoids in high head pressure applications
•Pressure failure alarm notification
•Sump sensor monitoring
◦May share the wire pair from single point sump sensor with a 100k resistor (such as Veeder
Root p/n: VR794380-208)
•Sump sensor alarm notification
•Full shutdown of the pump when an alarm condition is detected
•Pump contactor control in response to an authorization signal
•Ability to disable the re-pressurization cycle based on time-of-day if the tank test module of the
tank monitor needs extended quiet time
•Alarm output(s) can report to –
◦Standalone horn / light
◦ATG system
◦Building management system
•Remote Reset (optional)

3
II. Installation and Wiring:
A. High Voltage Wiring:
1. Must enter enclosure in the high voltage area –bottom of the enclosure on the left side.
2. High voltage wiring connects to the DIN rail terminal block strip.
3. All connections should be 14 –16 AWG.
4. Power Main
1. The enclosure requires one dedicated 120 VAC circuit at 15 or 20 amps
2. Max circuit draw could be 13 amps
3. HOT connects to terminal L1 –HOT.
4. Neutral connects to terminal N –NEUT.
5. Ground must be connected to GROUND. Ground must be connected to ensure
proper performance of the controller.
6. This system comes with advanced design characteristics that minimize the effects of
poor main grounds and transient noise. However, good design may not overcome all
of the problems of a poorly grounded site, or a site with a high amount of “noise”
transient voltage. If communication problems or excessive false alarms occur, first
have a qualified electrical contractor check the systems ground(s). Contact VMI for
trouble-shooting or the need for power line filtration.
B. AC Outputs
See B-1 for AC Outputs: Control Valve Applications
See B-2 for AC Outputs: Non-Control Valve Applications
B-1. AC Outputs: Control Valve Applications
1. (8) 120VAC Outputs
(4) Hook / Turbine Outputs
(2) Control Valve Outputs
(2) Alarm Outputs
2. All outputs provide a switched hot.
3. Each output can supply no more than 2 amperes of current.
4. Hook / Turbine Outputs

4
Hook / Turbine outputs cannot drive the pump directly. The turbine output should be wired to
the tank gauge’s Auth input or the turbine contactor coil. If the site has dispenser sump sensors
or submersible sump sensors the VMI controller is not monitoring, the VMI turbine outputs
should become the tank monitor’s authorizations. In this manner, the pump starting and
stopping is subject to the site sensors. Alternatively, Sump Alarms and E-stop can be wired to
break main power to the ISM.
B-2. AC Outputs: Non-Control Valve Applications
1. (8) 120VAC Outputs
(4) Hook / Turbine Outputs
(4) Alarm Outputs
2. All outputs provide a switched hot.
3. Each output can supply no more than 2 amperes of current.
4. Hook / Turbine Outputs
Hook / Turbine outputs cannot drive the pump directly. The turbine output should be wired to
the tank gauge’s Auth input or the turbine contactor. If the site has dispenser sump sensors or
submersible sump sensors the VMI controller is not monitoring, the VMI turbine outputs should
become the tank monitor’s authorizations. In this manner, the pump starting and stopping is
subject to the site sensors. Alternatively, Sump Alarms and E-stop can be wired to break main
power to the ISM.
C. Alarm Outputs:
1. Alarm outputs are provided per product or turbine. Alarm Outputs are dynamic depending upon
site configuration. Alarm Outputs can be wired to ATG alarm inputs, separate annunciators, or
building management systems.
D. AC Inputs:
1. Up to four 120 VAC Authorization inputs (require a switched hot).
Typically, one input per product. Different options are available per site configuration.
2. Each AC input draws only 20 mA.
E. Low Voltage Inputs/Outputs (5 VDC):
1. Must enter enclosure in the Intrinsically Safe area –bottom of the enclosure on the right side.
2. Low voltage intrinsically safe wiring only connects to the terminal blocks in the area on the
bottom right side of the enclosure labeled left to right 1 –4.
3. All low voltage wiring should be twisted pair 14 –22 AWG with shield.
4. Each piston switch pair connects to a single terminal block.
5. Shield should be connected to the provided terminal blocks grouped with each IS switch. Ground
(shield) should not be connected in the sump.

5
F. Installation of IS Piston Switch(es):
1. Install provided O-ring on piston switch. Thread the piston switch into the vent port of the
mechanical line leak detector until hand-tight.
2. Apply a "UL Classified" (QLSR) pipe joint sealing compound (for use with petroleum products)
to the provided vent fitting and install in the open port on the side of the piston switch.
3. Install copper tube in the fitting and vent back to tank test port of the submersible pump.
4. Following the piston switch wiring diagram found on page 22 connect the IS wiring in the
junction box using the supplied wire nuts and di-electric grease. Use the wiring instructions
found on page 22 for the connection to the ISM-4080 control box.
5. If the Piston Switch is to share the wire pair with a sump sensor:
•Piston Switch and sump sensor must be installed in series
•The sump sensor must be single point with a 100k resistor (such as Veeder Root p/n
VR794380-208)
•Install per wiring diagram found on page 23
G. Wiring guides are located at end of this document. (Page 18)
Note: Before applying power to the system, it is recommended that you contact VMI. Be
prepared to email some pictures of your newly installed and wired ISM-4080 System.

6
III. Menu and Programming:
Caution: Before proceeding with the Set-up and Programming
ensure the breakers for the pumps connected to this system are OFF.
Preconfigured software may authorize pump(s).
GENERAL:
The ISM-4080 is an electronic interface that is a line leak detection monitor, a motor controller, and may
act as a sump sensor monitor. The ISM system can monitor and control up to (4) Products –(4)
Authorization Inputs, (4) Pump Outputs, (4) Alarm Outputs, (4) Sump Sensors Inputs, and (2) Control
Valve Outputs in various configurations.
The ISM-4080 series is able to identify line pressure through the ISM-4105\47 Piston Switch mounted on
the top of the LD-2000 MLLD (or ISM-4106\47 mounted on the LD-3000). The Piston Switch enables
the system to track when pressure falls to a determined level (switch opens). The ISM-4080 also
determines if the leak detector test that is run in response to low pressure completes with a pass. An Alarm
is initiated at a failure to pressurize the line (mechanical/electronic problem) or due to a 3 GPH line leak.
FRONT PANEL:
The ISM-4080 Controller protrudes through the front of the electrical box. In the center there is a 2-line
display. The displayed messages are listed below. There are 8 buttons or stick pins (4 on each side) that
may be used to program site specifics or initiate specific functions. The pin uses and functions follow.
DISPLAY:
The ISM-4080 2-line display presents system status:
•Line 1 reports 3 pieces of information
oProduct #, Turbine # (and which turbine is current lead on a manifolded line), and Pressure
oFor example, it may display
P=1 T=1L PRES=HI
oP= Product Number
▪P=1, 2, 3, or 4
oT= Turbine Number
▪T=1, 2, 3, or 4
oL= Lead Turbine Indicator
oPRES=Line Pressure
▪PRES = HI = High Line Pressure, LO = Low Line Pressure
•Line 2 displays State or Process and Alarm Status
oStates:
▪AUTHORIZE–There is a call or request for the product.
▪MONITOR–No Authorization, pump is off, line pressure is high.

7
▪DELAY–Line pressure is low –the system is waiting for the appropriate
time to repressurize/test the line.
▪PRESSURE–The system is testing the line.
▪PRES ALARM–The system has not been able to open the leak detector, or the
sensor response is not being detected by the ISM Controller.
▪SUMP ALARM- The sump sensor is reporting liquid in the sump.
▪DISABLE- Automatic repressurization is disabled for a programmed time
span.
▪SENSOR OUT- This piston switch is not connected, or the wire pair is open.
oAL= Alarm Status
▪AL States - N = No Alarm, P = Pressure Alarm, S = Sump Sensor Alarm
PUSH BUTTONS:
The buttons on the sides of the ISM are:
Left Side Right Side
MENU UP ARROW ▲
TEST CLEAR
PRINT ENTER
RESET DOWN ARROW ▼
•MENU- Used to enter and scroll through Categories, or to back out of a subcategory.
Each Category and their options will be discussed below.
•TEST- Test button not active on the ISM-4080 system.
•PRINT- Print button not active on the ISM-4080 system.
•RESET- This button is VERY IMPORTANT –WILL RESET ALARMS &
RESTART PUMP(S).
oEXAMPLE: If it appears Regular is not pumping, that Product should show:
P=1 T=1L PRES=LO
PRES ALARM AL=P
oFor the Product that is in Alarm - not pumping- it is important to have customers using the
product stop dispensing, no open nozzles. The line cannot be “cleared” if nozzles of the
fuel in question are still open. Customers using other products may continue to fuel.
oPush the RESET pin. Reset All is displayed, press ENTER to clear All Alarms. Thepump
will come on, trying to pressurize the line. The display will show MONITOR if pressure
returns. Allow customers to return to fueling.
oIf the Alarm returns such as
P=1 T=1L PRES=LO
PRES ALARM AL=P
▪Return nozzles to dispensers, push the RESET pin. Reset All is displayed, press
ENTER to clear All Alarms. If MONITOR does not return to the screen, contact VMI
for technical support.

8
•UP Arrow Increase a numeric value. If max value is reached, numbers will roll over to
lowest value. Holding down the button will speed up the counter.
•DOWN Arrow Decrease a numeric value. If min value is reached, numbers will roll over to
highest value. Holding down the button will speed up the counter.
•CLEAR- Resets a numeric value to original setting.
•ENTER- To choose a value or setting.
CONFIGURATION:
Before proceeding, it is important to determine if the ISM you are using is preconfigured or not.
When the ISM-4080 boots it will show the following screen:
ISM-4080
Version 3.XX
If the unit is not configured this message will stay on the screen after 10 seconds. If this is what shows
on your screen, follow from MENU next.
If the unit is configured, the boot screen will display for about 10 seconds and then move to the Home
Screen. The home screen will look something like this:
P=1 T=1L PRES=HI
MONITOR AL=N
This screen will rotate through all active products and channels showing the status of each. If the home
screen appears on the ISM-4080, Move down to 2nd MENU below.
MENU:
The MENU button is used to enter specific information about the station and how it is to operate. When
the MENU button is pushed, a Category will be displayed. Press ENTER to access the menu categories.
The first Category needed is SITE CONFIGURATION. The Category and responses are listed below.
Push MENU –RUN TIME SETUP
Push MENU –REPRESSURE
DISABLE TIME
Push MENU –SUMP SENSOR
SETUP
Push MENU –TEST SETUP
Push MENU –SET DATE/TIME?
Push MENU –SITE Facility Configuration
CONFIGURATION
Push ENTER –NUM OF TURBINES This is the Category, the 2nd line is the fill-in

9
PRODUCT 1 # Product = 1, Push the UP Arrow to enter the
number of pumps for Product 1 –1, 2, 3, or 4
Push ENTER –NUM OF LEAD TURB Define how many turbines can be lead
PRODUCT 1#
Push ENTER –NUM OF RUN TURB Max number of turbines (lead or not)
PRODUCT 1 # desired to run at a time
Push ENTER - ROTATE TURBINES? Select rotating or fixed lead turbine
PRODUCT 1 # Choose either YES/NO
Push ENTER - AUTO BASED Method of pump staging for manifolded
AUTHORIZATION applications. Use UP and DOWN ARROWS to set
correct option (AUTO/INPUT/PRESSURE)
Auto –Energizes additional pumps after MLLD on
lead pump has passed the line
Input –Not used for the ISM-4080 system
Pressure –Not used for the ISM-4080 system
Push ENTER –NUM SUCTION CV 0 is the default, only used for commercial suction
PRODUCT 1 0 pumps
Push ENTER –NUM PRESSURE CV 0 is the default. If controlling transition valves,
PRODUCT 1 0 enter appropriate value
Push ENTER –NUM DISPENSER CV 0 is the default, nearly always left at 0
PRODUCT 1 0
Push ENTER –NUM OF TURBINES This has moved back to get the same information on
PRODUCT 2 0 Product 2.
Push the UP Arrow to enter 1, 2, or 3 for the
number of pumps for Product 2
Pushing ENTER will cycle through subsequent Channels
Push MENU to return back to the Default screen, showing the normal scrolling screen such as:
PD=1 T=1L P=HI
MONITOR AL=N
If it is desired to temporarily disable scrolling to monitor a single channel, press the ENTER button on
the channel you wish to view. Pressing clear goes back to scrolling rotation, or the hold will timeout after
10 minutes.

10
2ND MENU:
All must complete 2nd Menu
The MENU button is used to enter specific information about the facility and how it is to operate. When
the MENU button is pushed, a Category will be displayed.
Push MENU –RUN TIME SETUP
Push ENTER –RESILIENCY VALUE Then enter the Resiliency Value, up to 9999 ml
PRODUCT 1 #### Push and hold the UP Arrow or the DOWN Arrow to
Write down the Line Resiliency Value here: increase or decrease the value. Read Line Resiliency
and Testing in the LDT-890 installation instructions
___________________ ml and read Bleed-Back Measurement: Page 13.
If the Resiliency is non-zero, then the Repressure and Delay times will automatically be calculated. The
next two screens will allow you to view the calculated values. WRITE DOWN the REPRESSURE and
DELAY VALUES BELOW on this sheet. Do not change the values displayed below unless you have
consulted with VMI.
Push ENTER –REPRESS TIME MIN Use the UP and DOWN ARROWS to adjust the
PRODUCT 1 __._ value between 0 and 20 minutes.
Push ENTER –DELAY TIME MIN Use the UP and DOWN ARROWS to adjust the
PRODUCT 1 ___._ value between 0 and 150 minutes.
Pushing ENTER will cycle back through for subsequent Channels
After all Channels have been programmed:
Push MENU - REPRESSURE Used to program a time period when repress-
DISABLE TIME urization is disabled for tank test quiet time. Only set
this up if the tank monitor is unable to complete a tank
test during normal operation quiet time.
Push ENTER –DIS START HOUR Use the UP and DOWN ARROWS to adjust the
PRODUCT 1 ## disable start time hour (24 hour clock)
Push ENTER –DIS END HOURUse the UP and DOWN ARROWS to adjust the
PRODUCT 1 ## disable end time hour (24 hour clock)
Pushing ENTER will cycle back through subsequent Channels. After all Channels have been
programmed:
Push MENU –SUMP SENSOR Sump Sensor Menu
SETUP