Leak-Guardian 2500 User manual

Leak-Guardian®
2500 SYSTEM GUIDE
RADIO CONTROLLED LEAK DETECTION/
AUTOMATIC WATER SHUT OFF SYSTEM

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The Leak-Guardian®System
The Leak-Guardian System is activated upon sensing any leak where
a Leak-Guardian Sensor/Transmitter is located.
Water coming from the main water supply will be cut-off.
Note: Residual water may flow down from pipes in the water
distribution system.
Reciever Actuator Sensor/Transmitter

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Leak-Guardian®Installation
The Leak-Guardian System installation is a simple procedure. Unlike
other systems that offer leak protection on a point-by-point basis,
where a shut off device must be placed at each potential leak site, the
patented Leak-Guardian requires only ONE plumbing connection.
The Leak-Guardian Actuator allows full flow of water in 3/4 or 1
inch water piping systems, when the valve is in the open state. In
the OFF state, it completely shuts off the water line to the pipeline
downstream from the Leak-Guardian Actuator.
The Leak-Guardian Systems requires these five installation steps:
1. Start by turning off the main shutoff valve for the water system
you will be installing the Leak-Guardian into.
2. Install the motorized water cutoff ball valve assembly (The
Acuator) onto the water supply line after the water meter and
after fire suppression sprinkler line. (See figure on opposite
page). Make sure that the plastic cover is oriented above the
ball valve and motor assembly.
3. Attach the Leak-Guardian Receiver to the wall within 8 feet of
the ball valve.
4. Remove cover from the Leak-Guardian Reciever, connect the 9-
volt battery, replace Receiver cover and plug the 9-volt AC
power supply into the receiver power connector (J2).
5. Remove cover from the Sensor/Transmitter. Pull the insulator
shim from the battery holder (see figure 3).
Once the installation has been accomplished, the system is ready to
protect your building. Place the Leak-Guardian Sensor/Transmitter at
locations where the might be any possible flooding events: Water
Heaters, Boilers, Washing machines, Dishwashers, Ice makers, Com-
modes, or any other devices that use water from your water system
and is protected with the Leak-Guardian System.
IMPORTANT: There is no limit to the number of Sensor/Transmitters
that may be placed in a single application.
Test your Leak-Guardian system on a regular basis
(see text for test procedures)

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The Leak-Guardian Valve Actuator
Size: 3.4" x 4.3" x 6.0"
Power Requirement: 9-13 VDC @ 200mA.
Connection: 8' cable, 4 conductor IDC connector
The Valve Actuator is a low voltage, high torque control device created for
the express purpose of reliably shutting off the water line in response to
the shut off signal generated by the Model-2500 Leak-Guardian System.
Offered in 3/4" and 1" diameters, this valve allows full flow of water in
the open, or “ON” position, and is completely closed in the “OFF”
position.
The Leak-Guardian motorized actuator has been designed to offer a
controlled shutdown of a water supply unlike that of the common
solenoid valve that “SNAPS” closed when the signal to shut off is given.
The rapid “SNAP” action of the typical solenoid valve creates a danger-
ous side effect called “WATER HAMMERING”. Water hammering is
created when the flow of virtually any liquid is stopped very rapidly, and
this is especially dangerous with water due to it’s weight of 62.5 pound
per cubic foot.
Water hammering can generate hundreds of pounds per square inch
above the normal water line pressure of 65 to 90 PSI. Pressures of this
level are known to break solder joints, rupture hoses, and even cause
failures of pipes and water heaters.
The shut off valve of the Leak-Guardian System creates a slow, (2-3
seconds), shut off of water flow, eliminating the possibility of creating a
water hammering shock in the line.
Suggested installation of the Leak-Guardian Valve Actuator is done with
unions, so that the valve assembly can be inserted or removed from an
application without the use of a torch. The use of a pipecutter may be
the only tool you will need for this type of installation. Refer to the
installation drawing for further details of this suggested method of
placing the valve into an application.
Note: You must comply with your local plumbing code.
After installation of the ball valve in the water distribution pipeline,
note that the attached 4-wire cable ships inserted onto the 4-pin
connector (J1) of the Model 2500 Receiver unit, located adjacent to
the power connector (J2).

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Once the ball valve connector (J1) is attached, and after being
certain that the Reciever battery is in place, replace the cover of the
Receiver Unit and reconnect the 9VDC power cord of the power
supply.
Note: Do not remove the valve assembly cover.
The internal mechanism of the Leak-Guardian Motorized Ball Valve
Actuator has no user serviceable parts. The internal cams of the unit
have been precisely adjusted for the correct ON and OFF positions of
the ball valve. Any alteration of the cam setting will render the Leak-
Guardian System virtually useless.
Important notice:
Do not handle Leak-Guardian unit by the antenna
Do not pick up the units by the antenna. When installing and trans-
porting, hold only by the body of the units.
Do not operate this system without fresh batteries
This device is equipped with a battery level indicator that will inform
the user of a low battery. An alarm of about ½ second approximately
every three minutes will indicate the low battery.
There is no way to shut off the low battery level alarm beeping
condition, except for the removal of the battery. This override is
provided to the user as a shutoff for the beeper, and can only be
accomplished with the intervention and knowledge of the user.
Do not disable the low battery alarm for an extended period
of time
The Leak-Guardian Receiver module will not beep indicating a low
battery condition when the system is operated without a battery in
place. The system will also lack the capacity to shut off the water
system in the event of a flood during power failure.
Test your Leak-Guardian system once every month
Externally available “OPEN” and “CLOSE” pushbuttons are provided
for the user to test the system, as well as turning the water supply on
and off.

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When the Leak-Guardian system is installed, the system should be
tested (preferably once a month) by removing the 9VDC power plug
from the side of the Leak-Guardian Receiver module, (figure 6). Press
the “CLOSE” button (figure 4) while watching for the “SHUTOFF”
LED to illuminate. This should happen within 5 seconds. If it takes
longer than 6 seconds, it is an indication of a low battery power, and
should be replaced. Pressing the “OPEN” button will turn the water
supply back on and cause the LED to shut off.
After testing the system, be certain to replace the 9VDC
power plug back into the Leak-Guardian Receiver module.
Refer to figure 7 when replacing the battery
The Leak-Guardian Receiver module battery will back up your 120V
power for as much as 24 hours, in the event of a power failure. After
power has been lost for any extended period of time, the backup
battery should be replaced. The low battery voltage alarm may not
be the best indicator of the status of the battery. Always replace the
battery when power failures have extended beyond a period of
approximately 12 hours.
The Leak-Guardian Sensor/Transmitter
Size: 2.675” square, height: .925”
Frequency of operation: 418mhz.
Power: +8 dbm max. (6.4 mw)
Batteries: 2 ea. 20mm coin (CR2032)
The Leak-Guardian Sensor/Transmitter is equipped with a transistor-
ized circuit that is specifically designed to extend the life of the
internal batteries to their maximum capacity by not using any power
until it senses a leak.
When a leak is detected by the sensing pads of the Leak-Guardian Sensor/
Transmitter (figure 2), power is sent through the unit which then trans-
mits a radio signal to the Leak-Guardian Receiver module, closing the
incoming water supply, and eliminating a potential flood.

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Enabling the Sensor/Transmitter:
The Leak-Guardian is shipped from the factory with an insulator
shim (figure 3). The insulator shim must be removed from the battery
holder of the Sensor/Transmitter to initialize the unit.Failure to
remove this shim will render the leak Sensor/Transmitter unable to
detect a leak, and be unable to transmit a signal to the Receiver.
How to remove the Insulator shim form the Sensor/Transmitter:
1. Removing the four screws from the bottom of the Sensor/Trans-
mitter.
2. Gently remove the cover.
3. Gently pull out the shim from the battery holder (see figure 2).
4. Carefully replace the cover, and the four screws (do not over-
tighten).
Selecting an address:
The Leak-Guardian Sensor/Transmitter and the Leak-Guardian Re-
ceiver module communicate using a radio linked data protocol that
requires the address selection switches on each respective unit to
contain matching addresses. Addresses are the patterns of the on/off
selections made for each of the switches numbered 1 through 8
(figure 9). The Leak-Guardian Receiver module is equipped with an
equivalent 8-position switch that must be set with the same switch
pattern as the Leak-Guardian Sensor/Transmitter.
Due to the complete nature of the address selections available, your
factory set Leak-Guardian system address may match the address of
some other device as the Leak-Guardian (example: a remote garage door
opener, or another Leak-Guardian system in a neighbors home).
In such cases, a new address pattern will need to be set. The newly
selected transmitter address must be duplicated into the Leak-Guardian
Receiver module and all other Leak-Guardian Sensor/Transmitters. (See
“Leak-Guardian Receiver module” specifications.)

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Placement of the Leak-Guardian Sensor/Transmitter:
The Leak-Guardian Sensor/Transmitter should be placed in positions
on the floor near any potential source of a water leak (example: at
the base of a water heater, a washing machine, dishwasher, ice
maker, etc.). Be sure to place the Sensor/Transmitter in a dry place
that is at the lowest level possible where any leaking water will tend
to collect (See below for examples of placement).
Testing the Leak-Guardian:
The battery operated Leak-Guardian Sensor/Transmitter, requires
that it be tested on a monthly schedule in order to insure that it is
always functioning properly.
Testing the Leak-Guardian is as simple as picking the unit up, wetting
the tip of a finger, and placing the wet fingertip between the main
sensing pad and the two active screws (the two screws that are
sectioned off from the main sensing pad) on the bottom of the unit
(figure 2). The red LED on the Leak-Guardian will illuminate and the
Leak-Guardian Receiver module will respond by shutting off the
water supply.
If the system fails to respond, change the Leak-Guardian
batteries immediately.
How to replace the battery in the Sensor/Transmitter:
1. Remove the cover from the Sensor/Transmitter by removing the
four screws from the bottom of the Sensor/Transmitter.
2. Gently remove the cover.
3. Remove the two coin batteries from holder (see figure 2).
4. Replace with two new coin type batteries.
5. Replace the cover, and the four screws (do not over-tighten).
Note: See P.14 for battery replacement instructions for
Reciever Module

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Note: Do not handle the Leak-Guardian Sensor/Transmitter by
the antenna
Electronic devices are sensitive to static electrical discharges.
Walking on carpets, wearing certain clothing, and numerous other
sources can generate very large static charges. Always pick up
the Leak-Guardian Sensor/Transmitter by the plastic body and touch
the bottom grounding surface first. This will reduce the risk of
discharge damage.
FIGURE 1 - TOP VIEW FIGURE 2 - BOTTOM VIEW
FIGURE 3 (COVER REMOVED)
ANTENNA
ALARM LED
SCREWS
MAIN
SENSING
PAD
INSULATOR
SHIM
ADDRESS
SWITCH
ALARM LED
Batteries: (2) CR2032 3 Volt Lithium
Note: Place both cells with the Plus (+)
side facing up, when replacing
the batteries.
ALWAYS REPLACE BOTH BATTERIES.
Always check that the antenna-to-an-
tenna clip connection is tight. Use caution
when tightening the connection, as it is
possible to break the antenna clip off of
the printed circuit board. This will result
in the unit being unable to operate nor-
mally and require factory repair that is not
covered under the warranty.
Never operate the unit without
the antenna in place.
LEAK-GUARDIAN SENSOR/TRANSMITTER MODULE
ACTIVE
SCREWS

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Picking up the Leak-Guardian by the antenna can cause an accumu-
lated high voltage static discharge to be conducted directly into the
Leak-Guardian electronics via the antenna lead, and cause perma-
nent damage to the unit.
Damage to Leak-Guardian units caused by antenna-induced
discharge failures are not covered under the warranty.
The Leak-Guardian Receiver module:
Size: Width: 4.6” depth: 3.0” height: 1.1”
Frequency of operation: 418MHz. / -97dBm
Power input: 9VDC @ 300mA.
Internal battery: 9VDC 625mA
The Leak-Guardian Receiver module is a low voltage system that is
tuned to the transmitting frequency of the matched Leak-Guardian
Sensor/Transmitter.
When the Leak-Guardian Sensor/Transmitter senses a leak, power is
sent to its internal transmitting unit which then transmits a radio
signal to the Leak-Guardian Receiver module. The Leak-Guardian
Receiver module decodes the properly addressed radio transmission
and closes the incoming water supply by energizing its internal drive
circuit. This controls the Leak-Guardian motorized ball valve, which is
connected to J1 of the Leak-Guardian Receiver module.
The Leak-Guardian Receiver module incorporates an internal 9VDC
battery for power loss backup for up to 24 hours. The battery must be
replaced with a high-energy 9VDC/ 625mA capacity, or better.
Do not use a 9VDC Ni-Cd or Ni-MH Rechargeable batteries.
Selecting an address (figure 9)
The Leak-Guardian Sensor/Transmitter and Receiver module commu-
nicate using a radio linked data protocol that requires the address
selection switches on each respective unit to contain matching
addresses. Addresses are the patterns of the on/off selections made
for each of the switches numbered 1 through 8 as can be seen in
figure 9. The Leak-Guardian Sensor/Transmitter is equipped with an
equivalent 8-position switch that must be set with the exact pattern
set in the Leak-Guardian Receiver module.
Due to the many address selections available, your factory set Leak-
Guardian system address may match the address of some other device as
the Leak-Guardian (example: a remote garage door opener, or another
Leak-Guardian system in a neighbors home).

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In such cases, a new address pattern will need to be set on the address
selectors. The newly selected Receiver address must be duplicated into
the Leak-Guardian Sensor/Transmitter module and all other Leak-
Guardian Sensor/Transmitters. (See “Leak-Guardian Sensor/Transmitter
module” specifications.)
9 VDC battery backup (figure 7):
The Leak-Guardian Receiver module uses an internal 9VDC-625mA
battery for 24 hours of backup protection. The battery should be
tested at least once every month to assure that the backup power is
available. Circuitry inside of the Leak-Guardian Receiver module will
indicate a low voltage condition of the battery by sounding the
alarm. When this alert is heard, replace the battery immediately,
using the approved batteries only; unapproved batteries may cause
the Leak-Guardian to malfunction and fail to protect against a
flooding event.
There is no way to shut off the low-battery alarm sound except for
the removal of the old battery (and subsequent installation of a
fresh battery), but when the battery is removed, there will not be a
power-failure backup, resulting in the possibility of an uncontrolled
flooding event.
Do not operate the Leak-Guardian Receiver module without a
good battery for an extended period of time.
Note: Although the internal circuitry of the Leak-Guardian Receiver
module will generate an audio alert flag of a low-voltage condition
of the battery, do not rely on this alert alone for prompting a change
of batteries; the audio alert is not a substitute for monthly testing.
Alarm condition:
The Leak-Guardian Receiver module can be activated by 2 conditions:
1. Radio reception from any Leak-Guardian Sensor/Transmitter
(Reciever LED will flash and Sonic Alarm will beep)
2. Leak-Guardian Reciever test procedure, P.13 (LED will be solid on).
Either alarm condition will cause the Leak-Guardian Receiver module to
close the Leak-Guardian motorized ball valve. When the Leak-Guardian
Receiver module closes the ball valve, it will indicate this condition by:
1. The front panel red LED will begin flashing.
2. The sonic alarm will sound in ¾ second beeps every 2 seconds.

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Manual controls:
The manual control switches of the Leak-Guardian Receiver module
are located underneath the mounting plate (figure 4).
Silencing the alarm warning:
When the Leak-Guardian Receiver module signals a leak alert, the
alarm sound can be silenced without affecting the state of the
shutoff valve.
Pressing the “silence” button will cause the alarm to stop. The red
LED will continue to flash while the Leak-Guardian valve remains
closed, until the cause of the alarm condition can be remedied.
Opening the Leak-Guardian valve: The Leak-Guardian Receiver
module “open” switch figure 4), will cause the Leak-Guardian
Actuator module system to rotate the Leak-Guardian valve into the
open condition.
Note: If the Leak-Guardian ball valve is already in the open state,
initiating the “open” switch will cause the valve to rotate 180° back
to the “open” state.
Closing the Leak-Guardian valve: The Leak-Guardian Receiver
modules “close” switch (figure 4) will cause the Leak-Guardian
Receiver module system to rotate the Leak-Guardian valve into the
closed condition.
When the Leak-Guardian is in a closed state:
1. If the Leak-Guardian valve is already in the closed state due to
the initiation of a manual close request, pressing the “close”
switch will cause the valve to rotate into its “open” state and
then back to “closed”.
2. If the Leak-Guardian valve is in the closed state due to a leak
initiated closure, the Leak-Guardian Receiver module will not
respond to pressing the “close” switch.

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Testing the Leak-Guardian Receiver module:
On a regular basis, the Leak-Guardian Receiver module should be
tested. The proper way to test the system is as follows:
1. Press the “close” switch: the Leak-Guardian valve should close.
Valve closure can be verified by the shutoff of the water supply.
The red alarm LED will illuminate, the sonic alarm will not be
heard.
2. Press the “open” switch, the Leak-Guardian valve should open.
The valve open state can be verified by the return of the water
supply flow. The red alarm LED will turn off.
3. Activate any of the Leak-Guardian Sensor/Transmitters used
within the system and the Leak-Guardian Receiver module will
shut off the water cutoff valve. Valve closure can once again be
verified by the shutoff of the water supply. The red alarm LED
will begin to flash and the sonic alarm will sound.
4. Press the “open” switch and the Leak-Guardian valve will open.
The valve open state can be verified by the return of the water
supply flow. The red alarm LED will turn off and the sonic alarm
will stop.
5. Remove the 9VDC power pack cord from J2, (figure 5 & 8), to
activate the internal battery back-up.
6. Activate any of the Leak-Guardian or Leak-Guardian Sensors used
within the system and the Leak-Guardian Receiver module will
shut off the Leak-Guardian water cutoff valve. Valve closure can
once again be verified by the shutoff of the water supply. The
red alarm LED will begin to flash and the sonic alarm will be
heard in short beeps.
7. Press the “open” switch and the Leak-Guardian valve will open.
The valve open state can be verified by the return of the water
supply flow. The red alarm LED will extinguish and the sonic
alarm will stop.
8. Note: Plug the 9VDC power pack cord back into connector J2.

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Changing the Reciever battery:
When the internal battery needs to be changed, the following
procedure should be followed:
1. Remove the two case mounting screws, (figure 8).
2. Unplug the 9VDC power pack cord from connector J2.
4. Carefully pull the case off of the aluminum mounting plate in a
vertical motion. The antenna support bushing holds the antenna
tightly so that it remains perpendicular to the aluminum mount-
ing plate. By jerking the case off of the mounting plate in any
other than a vertical motion, the antenna may become separated
from the internal antenna-mounting clip. If this should occur, use
a small phillips screwdriver to tighten the connection before the
case is replaced. Avoid over-tightening this connection, severe
torque can break the antenna off the printed circuit board. This
will result in a condition that will require factory repair, not
covered under warranty.
5. Remove the old battery and insert a new battery into the clips,
observing polarity (figures 7).
6. Replace the case onto the aluminum mounting plate in a vertical
motion. Be careful not to bend the antenna.
7. Push the case down over the antenna base until the case is flush
against the mounting plate. Make sure the cable is in its original
position.
8. Replace the two case mounting screws, until they are snug.
Note: avoid over tightening.
9. Plug the 9VDC power pack cord back into the connector J2.

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FIGURE 4. RECEIVER MOUNTING BASE FIGURE 5
FIGURE 6 - INTERNAL VIEW FIGURE 7 - BATTERY
SONIC ALARM
SILENCE
OPEN
9VDC POWER
CONNECTOR
(J2)
CLOSE
CABLE TO
ACTUATOR
(J1)
CABLE TERMINAL
TO ACTUATOR (J1)
9VDC POWER
TERMINAL (J2)
ADDRESS DIP
SWITCH
9VDC BATTERY
PLACEMENT
FIGURE 8
ANTENNA
CASE SCREWS
9VDC POWER
CONNECTOR
CABLE TO
ACTUATOR
FIGURE 9 ADDRESS SWITCHES
RECEIVER
SENSOR/TRANSMITTER

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LEAK-GUARDIAN LIMITED WARRANTY
Petro-Meter Corporation Warrants its Leak-Guardian systems to be free from manufacturing defects in materials
and workmanship for a period of 180 days from the original date of purchase, and its water control cutoff valves for
one year after the original installation.
Petro-Meter Corporation Will, within said period, at its option, repair or replace any product failing to operate, and
return such product, without charge, to the original purchaser or user, provided it is returned to Petro-Meter Corpora-
tion By the original user or purchaser, with all shipping costs prepaid and insured, in an appropriately protected
shipping container if not the original protective packaging.
Petro-Meter will not assume any additional liability for products that sustain further damage caused by inappropriate
packaging when shipping items back for factory repair or replacement.
This warranty shall not apply to any equipment or any part thereof, which has been repaired by other than Petro-
Meter Corporation, improperly installed, improperly used or adjusted, abused, altered, physically or electrically dam-
aged, subjected to acts of god, or on which serial numbers have been altered, defaced or removed. The seller will not
be responsible for any dismantling or reinstallation charges or fees.
There are no warrantees, express or implied, which extend beyond the description on the face hereof. There is no
express or implied warranty of merchantability or a warrant of fitness for a particular purpose.
This warranty is the sole warranty in its entirety. Any prior agreements or representations, whether oral or written, are
either merged in this warranty or are expressly cancelled. Petro-Meter Corporation Neither assumes, nor authorizes
any other person purporting to act on its behalf to modify, to change, or to assume for it, any other warranty or
liability concerning its products.
Additionally, this warranty is in lieu of all other obligations or liabilities on the part of Petro-Meter Corporation Seller’s
warranty, as hereinabove set forth, shall not be enlarged, diminished or affected by, and no obligation or liability shall
arise or grow out of, seller’s rendering of technical advice or service in connection with buyer’s order of the goods
furnished hereunder.
Petro-Meter Corporation Requires that all installed Leak-Guardian flood prevention systems be completely tested on
a regularly scheduled basis and that no adjustments be made to any component of the system, except for those made
by personnel qualified and or trained in such an adjustments or modifications, and that no such adjustments or
modifications be made without express written permission by Petro-Meter Corporation Incorrect or inappropriate
adjustments will cause the Leak-Guardian system to fail or to operate improperly.
Petro-Meter Corporation Limits its liability for any loss or damage, including incidental or consequential damages
arising from the failure of its product to Leak-Guardian Inc.’s original selling price of the product regardless of the
cause of such loss or damage.
Since Petro-Meter Corporation Hereby represents that it is not an insurer of either the property or safety of the user’s
family or employees, if the user wishes to protect itself to a greater extent, Petro-Meter Corporation Will, at the user’s
sole cost and expense, obtain an insurance policy to protect the user, supplemental to the user’s own insurance policy,
at a premium to be determined by Petro-Meter Corporation’s insurer, upon written notice from the user, verified by
certified mail, return receipt requested, to Petro-Meter Corporation’s home address, and upon payment of the annual
premium cost by the user.
Any action for breach of any expressed or implied warranty must be brought within 6 months following the end of
warranty period. In no case shall Petro-Meter Corporation Be liable to anyone for any consequential or incidental
damages for breach of this or any other warranty, express or implied, even if the loss or damage is caused by the seller’s
own negligence or fault.
Warning: Any electronic system is susceptible to unforeseeable random failure, and as such, it is possible for this
system to fail to operate or perform as expected despite frequent testing. Malfunction can be due to electrical distur-
bances or disruptions, communications malfunctions or disruptions, criminal tampering, unauthorized adjustments, or
other means beyond the seller’s control. Petro-Meter Corporation Does not represent that the system/product may not
be compromised or circumvented; or that the product or system will prevent any personal injury or property loss. A
properly installed and maintained system may only reduce the risk of flood damage, or otherwise but it is not insur-
ance or guaranty that these events will never occur.
Consequently, the seller shall have no liability for any personal injury, property damage, or other loss based on a claim
that the product failed to stop a flooding event. To mitigate any such loss occurrence, system confidence testing on a
weekly, or no longer that a monthly basis, is absolutely crucial.
The consumer is hereby advised to take any and all precautions for his or her safety and the protection of the premises
in order to mitigate the possibilities of harm and/or damage should the Leak-Guardian system experience a random
electronic failure beyond anyone’s control or prediction.
This warranty shall be construed according to the laws of the state of New York. Some states do not allow limitations
on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential
damages, or differentiate in their treatment of limitations of liability for ordinary or gross negligence, so the above
limitations or exclusions may not apply to you. This warranty gives you specific legal rights and you may also have
other rights that vary from state to state.