AV17 Series
Switch-Tek Manual
Direct and Remote
Drum Mount Float Alarm
17 SEPT 08
Rev A
Flowline, Inc.
10500 Humbolt Street
Los Alamitos, CA 90720
Tel: (562) 598-3015
Fax: (562) 431-8507
www.flowline.com
17 SEPT 08 Switch-Tek Drum Alarms 1 of 10
Rev A MN801853
Preface
This manual explains how to use the Switch-Tek series of horizontal and vertical floats.
Warranty, Service & Repair
To register your product with the manufacturer, go to the Flowline website for on-line registration. The
website address is as follows:
www.flowline.com
On-line Warranty Registration can be found under Contact Us in the Navigation Bar along the side of
the
home page. If for some reason your product must be returned for factory service, contact Flowline Inc.
at (562) 598-3015 to receive a Material Return Authorization number (MRA), providing the following
information:
1. Part Number, Serial Number
2. Name and telephone number of someone who can answer technical questions related to
the product and its application.
3. Return Shipping Address
4. Brief Description of the Symptom
5. Brief Description of the Application
Once you have received a Material Return Authorization number, ship the product prepaid in its original
packing to:
Flowline Factory Service
MRA_____
10500 Humbolt Street
Los Alamitos, CA 90720
To avoid delays in processing your repair, write the MRA on the shipping label. Please include the
information about the malfunction with your product. This information enables our service technicians
to process your repair order as quickly as possible.
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Warranty
Flowline warrants to the original purchaser of its products that such products will be free
from defects in material and workmanship under normal use and service in accordance
with instructions furnished by Flowline for a period, which is equal to the shorter of one year
from the date of purchase of such products or two years from the date of manufacture of
such products. Flowline's obligation under this warranty is solely and exclusively limited to
the repair or replacement, at Flowline's option, of the products or components, which
Flowline's examination determines to its satisfaction to be defective in material or
workmanship within the warranty period. Flowline must be notified pursuant to the
instructions below of any claim under this warranty within thirty (30) days of any claimed
lack of conformity of the product. Any product repaired or replaced under this warranty will
be warranted only for the remainder of the original warranty period.
Returns
Products cannot be returned to Flowline without Flowline's prior authorization. To return a
product that is thought to be defective, go to www.flowline.com, and submit a customer
return (MRA) request form and follow the instructions therein. All warranty and nonwarranty product returns to Flowline must be shipped prepaid and insured. Flowline will not
be responsible for any products lost or damaged in shipment.
Limitations
This warranty does not apply to products which: 1) are beyond the warranty period or are
products for which the original purchaser does not follow the warranty procedures outlined
above; 2) have been subjected to electrical, mechanical or chemical damage due to
improper, accidental or negligent use; 3) have been modified or altered; 4) anyone other
than service personnel authorized by Flowline have attempted to repair; 5) have been
involved in accidents or natural disasters; or 6) are damaged during return shipment to
Flowline. Flowline reserves the right to unilaterally waive this warranty and dispose of any
product returned to Flowline where: 1) there is evidence of a potentially hazardous material
present with the product; or 2) the product has remained unclaimed at Flowline for more
than 30 days after Flowline has dutifully requested disposition. This warranty contains the
sole express warranty made by Flowline in connection with its products. ALL IMPLIED
WARRANTIES, INCLUDING WITHOUT LIMITATION, THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSLY
DISCLAIMED. The remedies of repair or replacement as stated above are the exclusive
remedies for the breach of this warranty. IN NO EVENT SHALL FLOWLINE BE LIABLE
FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND INCLUDING
PERSONAL OR REAL PROPERTY OR FOR INJURY TO ANY PERSON. THIS
WARRANTY CONSTITUTES THE FINAL, COMPLETE AND EXCLUSIVE STATEMENT OF
WARRANTY TERMS AND NO PERSON IS AUTHORIZED TO MAKE ANY OTHER
WARRANTIES OR REPRESENTATIONS ON BEHALF OF FLOWLINE. This warranty will
be interpreted pursuant to the laws of the State of California. If any portion of this warranty
is held to be invalid or unenforceable for any reason, such finding will not invalidate any
other provision of this warranty.
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Rev A MN801853
Table of Contents
Introduction ..........................................................................................................................5
General Information .................................................................................................5
Technology ..............................................................................................................5
Installation............................................................................................................................5
Alarm Enclosures .....................................................................................................5
Environmental ......................................................................................................................6
Dimensions (Direct Drum) ......................................................................................6
Dimensions (Remote Drum) ....................................................................................7
Material Compatibility .............................................................................................7
Electrical interface ...............................................................................................................8
Typical Current and Voltage Ratings ......................................................................8
Operation..................................................................................................................8
Specification ............................................................................................................8
Maintenance .........................................................................................................................9
Cautions ...................................................................................................................9
Testing the Installations ...........................................................................................9
Cleaning Procedure ................................................................................................10
Changing the Battery .............................................................................................10
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Introduction
Flowline offers several level indication products designed specifically for standard 20-, 30- and 55gallon drums. These level indicators will fit-up directly with standard 3/4” NPT bungs. This family of
standard level switch (es) comes in low-level, high-level and multi-level designs, for both low-and highlevel indication. The basic level switch uses an on-board battery supply as a power source. Alarms are
available in either a fixed-mount (to the level switch) or a remote-mount design. This package provides
both the level switch and the alarm with battery power for ease of use in remote sites where a power
source is not readily available.
1. Switches should be installed rigidly so the float or floats are free to move as the liquid level
changes.
2. Switches should be mounted in a tank area free of severe turbulence or protected from such
turbulence by appropriate and adequate slosh shields.
3. Vertical switch stems should be vertical for best results, but satisfactory operation is possible in
most liquids with the stem at up to a 30° angle from vertical.
4. Care should be taken that switches are always operated within electrical ratings.
General Information:
o Available for high-level signal, low-level signal, or high and low level signals.
o Designed with liquid tight fittings, allowing for usage both indoors and outdoors.
o Optional alarm enclosures are available, see part number chart below.
Technology
Float switches consist of a float, magnet, reed switch and body/stem with mounting threads. When the
probe is dry, the float rests on the bottom of the stem such that the magnet does not influence the reed
switch. As the probe becomes immersed in liquid, the float becomes buoyant and the magnet elevates
causing the reed switch to change state.
Installation
o Apply a suitable thread sealant to the threads.
o Tighten into 3/4" bung of drum, ½ turn beyond hand tight.
Alarm Enclosures:
o AV17-S101, AV17-S201 and AV17-S301
o Fixed mount design. Will be threaded onto the stem assembly during assembly.
o Available in a High-Level, Low-Level or High and Low-Level, see part number chart below.
o Standard design with LED’s for alarm.
o Top-level part, AV17-S101, AV17-S201 and AV17-S301, must be ordered with the alarm.
The end user cannot install the Alarm.
o AV17-S401, AV17-S501 and AV17-S601
o Remote mount design. Uses liquid tight fitting to secure cable to enclosure.
o Available in a High-Level, Low-Level or High and Low-Level, see part number chart below.
o Standard design with LED’s for alarm.
o Top-level part, AV17-S401, AV17-S501 and AV17-S601, must be ordered with the alarm.
The end user can remove the alarm enclosure.
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Part Number
Operation
(dry condition)
Function
Alarm
Enclosure
Stem Length
(inches)
20, 30, 55
Gallon Drum
AV17-S101
NO
High Level
Yes
2.00
20, 30, 55
AV17-S401
NO
High Level
Yes
2.00
20, 30, 55
AV17-S201
NC
Low level
Yes
32.00
55
AV17-S501
NC
Low level
Yes
32.00
55
AV17-S301
NO / NC
High level
& Low level
Yes
32.00
55
AV17-S601
NO / NC
High level
& Low level
Yes
32.00
55
Direct Drum Mount
AV17-S101
AV17-S201
AV17-S301
Environmental
Dimensions
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Remote Drum Mount
AV17-S401
AV17-S501
AV17-S601
Material Compatibility:
o All versions of the AV17 series have the stem, fittings and floats manufactured from 316
stainless steel (316 SS) and grip rings made of PH-15-7 Mo SS.
o Direct Drum Mount designs (AV17-S101, AV17-S201 and AV17-S301) do not come
with
any exposed cable.
o The Remote Drum Mount designs (AV17-S401, AV17-S501 and AV17-S601) come with
2 or 4-conductor, 22 AWG, Halar-jacketed; 72” length (±2”) cable.
o Make sure that the switch is compatible with the application liquids. To determine the
chemical compatibility between the sensor and its application liquids, refer to the
Compass Corrosion Guide, available from Compass Publications (858-589-9636).
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Rev A MN801853
Electrical Interface
Watts
Voltage
Amps (resistive)
30
240 VAC
0.14 A
30
120 VAC
0.28 A
30
120 VDC
0.07 A
30
24 VDC
0.28 A
Part
Number
Description
Float
Mat’l
Stem
Mat’l
Max.
Oper.
Temp (°C)
Max
Pressure
(PSIG)
Float
SG
Nominal
VA
Fitting
Direct Drum Mount
AV17-S101
High Alarm NO
316 SS
316 SS
150
250
0.73
(±0.02)
30
¾” NPT
AV17-S201
Low Alarm NC
316 SS
316 SS
150
250
0.73
(±0.02)
30
¾” NPT
AV17-S301
High Alarm NO &
Low Alarm NC
316 SS
316 SS
150
250
0.73
(±0.02)
30
¾” NPT
Remote Mount
AV17-S401
High Alarm NO
316 SS
316 SS
150
250
0.73
(±0.02)
30
¾” NPT
AZ17-S501
Low Alarm NC
316 SS
316 SS
150
250
0.73
(±0.02)
30
¾” NPT
AV17-S601
High Alarm NO &
Low Alarm NC
316 SS
316 SS
150
250
0.73
(±0.02)
30
¾” NPT
o Typical Current and Voltage Ratings
o Note: The ratings above are for resistive loads only. For inductive loads, maximum switch life
will
be achieved if appropriate arc suppression is used.
Operation
Alarm box has two LED that indicate when an alarm occurs. The LED’s are for High-Level and LowLevel.
o For models AV17-S101 and AV17-S401, the Low-Level LED is not active
o For models AV17-S201 and AV17-S501, the High-Level LED is not active
The Alarm Box also features a three position switch to Turn On, Turn OFF or Test the alarms
o ON – Activates the alarm(s). Use this setting for running the Drum Alarm
o OFF – Deactivates the alarm(s). Use this setting when changing the drum
o TEST – Used as a test to verify power and confirm the operation of the LED(s).
This is moment position and will reset to OFF when released.
Specifications
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Maintenance
Maintenance should consist of inspection to see that the float is free to move and not coated with any
substance, which would change its weight or volume significantly. If this occurs, the float should be
cleaned. This is easily accomplished without disturbing the installation. In addition, the stem may be
wiped down to remove any build-up. The only repair possible in the field is replacement of either the
float or stem. Dents or nicks on the float are usually of no consequence to operation.
Cautions
FLOWLINE manufactures a wide range of liquid level switches and technologies. While each of these
switches are designed to operate in a wide variety of applications, it is the user's responsibility to select
a switch model that is appropriate for the application, install it properly, perform tests of the installed
system, and maintain all components. The failure to do so could result in property damage or serious
injury.
1. The pressure, temperature and electrical limitations shown for the specified level switches must
not be exceeded.
2. The pressures and temperatures must take into consideration possible surges in the temperature
and pressure of the system.
3. The liquids used must be compatible with the materials of construction. Specifications of
materials
will be given upon request.
4. Life expectancy of the switch varies with applications. Contact the factory if life cycle testing is
required.
5. Ambient temperature changes can affect switch set points, since specific gravities of liquids vary
with temperature. Consult factory for assistance.
6. Level switches have been designed to be shock and vibration resistant. For maximum life, both
shock and vibration should be minimized. Consult factory for assistance.
7. Excessive contaminants in fluid may inhibit float operation, and occasional wipe down may be
necessary.
8. Level switches must not be field repaired
9. Physical damage to product may render product unserviceable.
10. Installation in a vessel made from magnetic materials may affect operation.
Testing the installation:
1. Power: Turn on power to the controller and/or power supply.
2. Immersing the switch: Immerse the sensing tip in its application liquid, by filling the tank up to
the switches point of actuation. An alternate method of immersing the switch during preliminary
testing
is to hold a cup filled with application liquid up to the switch's tip.
3. Test: With the switch being fluctuated between wet and dry states, the switch indicator light in
the controller should turn on and off. If the controller doesn't have an input indicator, use a
voltmeter
or ampmeter to ensure that the switch produces the correct signal.
4. Point of actuation: Observe the point at which the rising or falling fluid level causes the switch
to change state, and adjust the installation of the switch if necessary.
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Cleaning procedure:
1. Power: Make sure that all power to the switch, controller and/or power supply is completely
disconnected.
2. Switch removal: If necessary, make sure that the tank is drained well below the switch prior to
removal. Carefully, remove the sensor from the installation.
3. Cleaning the switch: Using a soft bristle brush and mild deter-gent, carefully wash the switch.
Do not use harsh abrasives such as steel wool or sandpaper, which might damage the surface of
the sensor. Do not use incompatible solvents, which may damage the sensor's 316 stainless steel
body. Take particular care to remove any scaling from the float body and make sure that it moves
freely.
4. Sensor installation: Follow the appropriate steps of installation as outlined in the Installation
section of this manual.
Changing the Battery
The AV17 Series uses one 9 volt battery to provide power for the system. Periodically, the batteries will
need to be replaced. Follow the instructions below to replace the batteries:
1. Turn the AV17 series OFF
2. Make sure the application is in a safe state before continuing.
3. Loosen the 4 screws with a flat head screw driver and remove the cover of the alarm box.
4. Remove the 9 volt battery.
5. Replace with one fresh battery. Make sure to observe polarity.
6. Replace cover and tighten the four screws.
7. Test the system with the TEST feature
8. Turn the AV17 ON.
AV17 shown with Cover Off
10 of 10 Switch-Tek Drum Alarms 17 SEPT 08
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