Models
F10 and F50
Installation and Operating Manual
Flow
Switches
Model F10
Model F50
Read this Manual Before Installing
This manual provides information on Model F10 and F50
Flow Switches. It is important that all instructions are read
carefully and followed in sequence. Detailed instructions
are included in the Installation section of this manual.
Conventions Used in this Manual
Certain conventions are used in this manual to convey
specific types of information. General technical material,
support data, and safety information are presented in
narrative form. The following styles are used for notes,
cautions, and warnings.
NOTES
Low Voltage Directive
For use in Installation Category II, Pollution Degree 2. If
equipment is used in a manner not specified by the
manufacturer, protection provided by the equipment
may be impaired.
Notice of Trademark, Copyright, and Limitations
Magnetrol & Magnetrol logotype are registered trade-
marks of Magnetrol International.
Copyright © 2010 Magnetrol International,
Incorporated. All rights reserved.
Performance specifications are effective with date of issue
and are subject to change without notice. Magnetrol
reserves the right to make changes to the
product described in this manual at any time without
notice. Magnetrol makes no warranty with respect to the
accuracy of the information in this manual.
Warranty
All Magnetrol mechanical level and flow controls are war-
ranted free of defects in materials or workmanship for five
full years from the date of original factory shipment.
If returned within the warranty period; and, upon factory
inspection of the control, the cause of the claim is
determined to be covered under the warranty; then,
Magnetrol will repair or replace the control at no cost to
the purchaser (or owner) other than transportation.
Magnetrol shall not be liable for misapplication, labor
claims, direct or consequential damage or expense arising
from the installation or use of equipment. There are no
other warranties expressed or implied, except special written
warranties covering some Magnetrol products.
Quality Assurance
The quality assurance system in place at Magnetrol guar-
antees the highest level of quality throughout the company.
Magnetrol is committed to providing full customer satis-
faction both in quality products and quality service.
Magnetrol’s quality assurance system
is registered to ISO 9001 affirming its
commitment to known international
quality standards providing the
strongest assurance of product/service
quality available.
Notes contain information that augments or clarifies
an operating step. Notes do not normally contain
actions. They follow the procedural steps to which
they refer.
Cautions
Cautions alert the technician to special conditions that
could injure personnel, damage equipment, or reduce
a component’s mechanical integrity. Cautions are also
used to alert the technician to unsafe practices or the
need for special protective equipment or specific
materials. In this manual, a caution box indicates a
potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
WARNINGS
Warnings identify potentially dangerous situations or
serious hazards. In this manual, a warning indicates an
imminently hazardous situation which, if not avoided,
could result in serious injury or death.
Safety Messages
Follow all standard industry procedures for servicing elec-
trical equipment when working with or around high
voltage. Always shut off the power supply before touch-
ing any components.
WARNING!
Explosion hazard. Do not connect or dis-
connect equipment unless power has been switched off or
the area is known to be non-hazardous.
F10 and F50
Flow Switches
Table of Contents
1.0 Introduction
1.0.1 Model F10...................................................4
1.0.2 Model F50...................................................4
1.1 Principle of Operation...........................................4
1.1.1 Model F10...................................................4
1.1.2 Model F50...................................................4
1.2 Operating Cycle ....................................................4
1.2.1 Model F10...................................................4
1.2.2 Model F50...................................................5
2.0 Installation
...................................................................5
2.1 Unpacking.............................................................5
2.2 Piping....................................................................5
2.2.1 Model F10...................................................5
2.2.2 Model F50...................................................5
2.3 Mounting ..............................................................6
2.3.1 Model F10 Mounting —
Threaded Connection..................................6
2.3.1.1 Installation of F10 in Horizontal Line..6
2.3.1.2 Positioning Vane Perpendicular
to Flow .................................................6
2.3.1.3 Trimming Vane to fit Horizontal
Line Size...............................................7
2.3.1.4 Final Mounting ....................................7
2.3.2 Model F10 – Flanged Connection...............8
2.3.3 Model F50 Mounting..................................8
2.3.3.1 Installation of Model F50.....................8
2.4 Wiring...................................................................8
2.4.1 Model F10 Switch Actuation Adjustment....9
3.0 Preventive Maintenance
.............................................10
3.1 What To Do ........................................................10
3.1.1 Keep Control Clean ..................................10
3.1.2 Inspect Switch Mechanisms, Terminals,
and Connections Monthly.........................10
3.1.3 Inspect Entire Unit Periodically.................11
3.2 What To Avoid ....................................................11
4.0 Reference Information
...............................................12
4.1 Troubleshooting...................................................12
4.1.1 Check Switch Mechanism .........................12
4.1.2 Test Control’s Performance........................13
4.2 Agency Approvals ................................................14
4.3 Specific Gravity ...................................................15
4.3.1 Model F10 and F50 Specific Gravity
Correction .................................................15
4.4 Specifications.......................................................16
4.4.1 Model F10 Actuating Flow Rates ..............16
4.4.2 Model F50 Actuating Flow Rates ..............18
4.4.3 Model F10 Dimensiona
Specifications.............................................19
4.4.4 Model F50 Dimensional
Specifications.............................................20
4.5 Replacement Parts ...............................................21
4.5.1 Model F10.................................................21
4.5.1.1 Model F10 Parts Identification...........21
4.5.1.2 Model F10 Switch and
Housing Reference .............................21
4.5.1.3 Model F10 Threaded Mounting .........22
4.5.1.4 Model F10 Flanged Mounting ...........22
4.5.2 Model F50.................................................23
4.5.2.1 Model F50 Parts Identification...........23
4.5.2.2 Model F50 Switch and
Housing Reference .............................23
4.5.2.3 Model F50 Bronze Body
Replacement Parts ..............................24
4.5.2.4 Model F50 Stainless Steel
Replacement Parts ..............................24
4.6 Model Numbers ..................................................25
4.6.1 Model F10.................................................25
4.6.2 Model F50.................................................26
47-602 F10 and F50 Flow Switches
1.0
Introduction
1.0.1 Model F10
F10 vane-actuated flow switches provide excellent reliabili-
ty for a broad spectrum of horizontal pipe flow-sensing
applications, including air, oil and petroleum derivatives,
corrosive chemicals, and water.
1.0.2 Model F50
Pivot
Return
spring
Adjusting
screw
F50 Flow Switches are utilized, in horizontal lines, to sense
the presence or absence of liquid flow in oil, chemical, gas,
and water lines.
1.1
Principle of Operation
Swing out
position
Magnetic
sleeve
1.1.1 Model F10
Actuating
vane
The flow of liquid or gas through a pipeline applies a force
to a flow vane inserted into the pipeline. When flow is
sufficient such that the force on the vane moves the vane,
it is pivoted up, parallel to the flow. This movement causes
an attraction sleeve to move into the field a magnet. The
magnet moves toward the sleeve causing actuation of
the switch.
1.1.2 Model F50
Figure 1—No Flow Position
Pivot
The flow of liquid through the valve body applies a force
to a flow disc. This in turn raises the magnetic sleeve,
within its sealed non-magnetic enclosing tube into the
field of the switch magnet, located outside the enclosing
tube, actuating the attached switch mechanism.
1.2
Operating Cycle
Return
Spring
Magnet
1.2.1 Model F10
Sufficient flow through a pipeline causes the pivoted vane
assembly to swing in the direction of the flow. The vane
assembly rotates a cam which lifts an attraction sleeve,
which in turn causes the magnet to pull in and actuate
the switch.
The O-ring sealed adjusting screw, in the top of the
enclosing tube, compresses the range spring located above
the attraction sleeve. Turning the adjusting screw clock-
wise, increases the flow rate at which the switch actuates.
Adjustments can be made while the flow switch is in service.
Figure 2—Position w/Actuating
Flow Present
4
47-602 F10 and F50 Flow Switches
1.2.2 Model F50
On an increasing flow rate, the flow disc moves the attrac-
tion sleeve up within the field of a switch magnet, drawing
it in tightly to the enclosing tube. This causes the switch
to make or break an electrical circuit. When the flow rate
drops, below the rate for which the flow disc is calibrated,
the attraction sleeve is pulled downward until, at a prede-
termined low flow rate, the switch magnet releases and
swings outward, away from the enclosing tube, causing a
reversal of the switching action.
2.0
Snap switch
Pivot
Return
spring
Installation
This section provides detailed procedures for properly
installing Model F10 and F50 Flow Switches.
2.1
Swing out
position
Unpacking
Caution:
If equipment is used in a manner not specified by the
manufacturer, protection provided by the equipment may
be impaired.
Figure 3—No Flow Position
Unpack the instrument carefully, inspecting all compo-
nents for damage. Report any concealed damage to the
carrier within 24 hours. Check the contents of the carton/
crate against those listed on the packing slip, and report
any discrepancy to the factory. Check the part number on
the nameplate to be certain it agrees with the part number
shown on the packing slip and purchase order. Record the
serial number for future reference when ordering parts.
2.2
Piping
Enclosing
tube
(non-magnetic)
Sleeve
(magnetic)
Pivot
Magnet
Swing in
position
Return
Spring
NOTE: For proper performance, a straight pipe run of 12 pipe diame-
ters up stream and 3 pipe diameters downstream of the switch
is recommended.
2.2.1 Model F10
Flow disc
The F10 flow switch should be located in a horizontally
run pipe with the arrow on the body bushing or mounting
flange pointing in the direction of flow.
2.2.2 Model F50
Figure 4—Position w/Actuating
Flow Present
The Model F50 flow switch should be located in a hori-
zontal pipe run, with the arrow on the valve body pointing
in the direction of flow. The switch housing must always
be above the valve body.
47-602 F10 and F50 Flow Switches
5
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