Idex Liquid Controls F Series User manual

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Table of Contents
Resources in this Guide ............................................................................................... 3
Publication Updates ..................................................................................................... 4
Safety Procedures ....................................................................................................... 4
Overview ...................................................................................................................... 7
Installation & Operation ............................................................................................... 9
Disassembly & Reassembly ....................................................................................... 11
Replacement Parts & Troubleshooting ....................................................................... 14
Bill of Materials .......................................................................................................... 17

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Strainers
Congratulations on ownership of a Liquid Control Strainer. This manual provides the technical
details on installation, hardware, setup, operation, and regulatory information for your meter.
Resources in this Guide
For convenience, you can easily download the PDF edition of this guide. Liquid Controls
recommends that you read through the introductory and safety information, and then proceed
to the Installation chapter.
DISCLAIMER
Liquid Controls disclaims all liability for damage to meter or accessories because of
corrosion, salting out of product, or separation of chemicals whether occurring
during periods of use or storage.
NOTICE
This manual provides warnings and procedures that are intended to inform the owner and/or
operator of the hazards present when using the Liquid Controls Meter on LP gas and other
products. The reading of these warnings and the avoidance of such hazards is strictly in the
hands of the owner-operators of the equipment. Neglect of that responsibility is not within
the control of the manufacturer.

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Publication Updates
The most current versions of all Liquid Controls publications are available on the Liquid
Controls web site. If there are questions about the language or interpretation of any LC
manuals, instructions, or specification sheets, please first contact your local distributor for help
with your inquiry.
For service related issues that require further support from the Liquid Controls Service Team,
please call the Liquid Controls Corporate Office:
Phone: [phone]
Toll-free: 800 458 5262
Address: Liquid Controls LLC, 105 Albrecht Drive, Lake Bluff, IL 60044 USA
Website: www.LCmeter.com
Safety Procedures
BE PREPARED
· Before using this product, read and understand the instructions.
· All work must be performed by qualified personnel trained in the proper
application, installation, and maintenance of equipment and/or systems in
accordance with all applicable codes and ordinances.
· When handling electronic components/boards, always use proper Electrostatic
Discharge (ESD) equipment and follow proper procedures.
· Make sure that all necessary safety precautions have been taken.
· Provide for proper ventilation, temperature control, fire prevention, evacuation,
and fire management.
· Provide easy access to appropriate fire extinguishers for your product.
· Consult with your local fire department, state, and local codes to ensure
adequate preparation.
· Read this manual and all the literature provided in your owner’s packet.
· Save these instructions for future reference.
· Failure to follow the instructions in this publication could result in, personal
injury, or death from fire and/or explosion, property damage, or other hazards
that may be associated with this type of equipment.

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SAFELY EVACUATE PIPING SYSTEM
Before disassembly of any meter or accessory component: ALL INTERNAL
PRESSURES MUST BE RELIEVED AND ALL LIQUID DRAINED FROM THE
SYSTEM IN ACCORDANCE WITH ALL APPLICABLE PROCEDURES.
· Pressure must be 0 (zero) psi.
· Close all liquid and vapor lines between the meter and liquid source.
Failure to follow this warning could result in property damage, personal
injury, or death from fire and/or explosion, or other hazards that may be
associated with this type of equipment.
OBSERVE NATIONAL & LOCAL CODES
Power, input, and output (I/O) wiring must be in accordance with the area
classification for which it is used (Class I, Div 2). For North America, installations
must be per the U. S. National Electrical Code, NFPA 70, or the Canadian
Electrical Code in order to maintain Class I, Division 2 ratings. This may require
using connections or other adaptations in accordance with the requirements of
the authority having jurisdiction.
Peripheral equipment must be suitable for the hazardous location where it is
installed. (L'équipement périphérique doit être adapté à la zone dangereux où il
est installé.)
WARNING: Explosion Hazard
When in hazardous locations, turn power OFF before replacing or wiring
modules. (Lorsque dans des endroits dangereux, coupler le courant avant de
remplacer ou de câbler des modules.)
DO NOT disconnect equipment unless power has been switched OFF or the area
is known to be Non-Hazardous. (NE PAS déconnecter l'équipement san coupler
l'alimentation ou sans s'assurer que la zone est non dangereuse.)
WARNING: Use 3.5 in • lb (0.4 N • m) torque when tightening terminal block
screws.

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IN THE EVENT OF A GAS FIRE
IN THE EVENT OF A LARGE FIRE OR FIRES THAT ARE SPREADING
· Evacuate the building and notify your local fire department.
· Stop the leakage only if you can safely reach the equipment.
IN THE EVENT OF SMALL, CONTAINED FIRES THAT YOU CAN SAFELY
CONTROL
· Stop the leakage, if you can safely reach the equipment.
· Use the appropriate extinguisher for the materials that have caught fire, such a
Class B fire extinguisher, water, or fog extinguisher.
· If in doubt, call your local fire department.
IN THE EVENT OF A GAS LEAK
IN THE EVENT OF A LARGE GAS LEAK
· Evacuate the building and notify your local fire department.
IN THE EVENT OF A SMALL, CONTAINED GAS LEAK
· Stop the leak and prevent accidental ignition.
· Prevent the entrance of gas into other portions of the buildings. Some gases
such as LPG seek lower levels, while other gases seek higher levels.
· Evacuate all people from the danger zone.
· Ensure that the gas is dispersed before resuming business and operating
motors.
· If in doubt, notify your local fire department.

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Overview
The Purpose of Liquid Control Strainers
Strainers help to protect meters from serious damage caused by burrs dislodged from new
piping, pipe scale or foreign material. The initial cost of the strainer is good insurance against
the cost of down time and replacement parts incurred from a damaged meter. A meter
strainer installed on the inlet side is necessary even when a coarse strainer on the upstream
side of the pump is included in the system. Strainers are not meant to be used as a system
filter but as limited protection for the meter element itself.
How Liquid Controls Strainers Work
As a liquid product enters the strainer housing from the supply line, it is routed through the
strainer basket. The strainer basket is a two-ply screen. The inner screen is made of fine
mesh of either 20, 40, 80, 100, or 200 squares per inch. The outer screen works as a backing.
It gives reinforcement and support to the fine mesh inner screen. Liquid passes through the
strainer and into the inlet of the meter. Any debris that is larger than the mesh in the basket is
trapped in the basket. THE STRAINER IS NOT A FILTER, and the size of the mesh in the
basket selected will determine the particle size that can pass through the strainer. Basket
mesh selection is generally based on maximum fluid viscosity at minimum ambient operating
temperature.
Features
Liquid Controls markets a wide variety of strainers to fit most meters in terms of capacity, pipe
size, working pressure and metallurgical compatibility. The design advantages of a Liquid
Controls strainer include:
• Strainer baskets with an high open basket area-to-pipe area ratio, resulting in minimum
restriction of flow and low pressure loss.
• Choice of 20, 40, 80, 100 or 200 mesh cadmium plated steel or stainless steel strainer
baskets.
• Installation in a variety of positions that simplifies piping.
• Optional 45-degreee accessory elbows for indexing strainer inlet positions other than right
angle flow. Available for 2” F-7 Aluminum strainers only.

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WARNING
Relieving Internal Pressure
All internal pressure must be relieved to zero pressure before disassembly or inspection of
the strainer, vapor eliminator, any valves in the system, the packing gland, and the front or
rear covers.
WARNING: Serious injury or death from fire or explosion could result in performing
maintenance on an improperly depressurized and evacuated system.
Relieving Internal Pressure Procedure for LPG and NH3Meters
Follow these steps:
1. Close the belly valve of the supply tank.
2. Close the valve on the vapor return line.
3. Close the manual valve in the supply line on the inlet side of the meter. If no manual
valve exists on the inlet side, consult the truck manufacturer for procedures to
depressurize the system.
4. Slowly open the valve/nozzle at the end of the supply line.
5. After product has bled off, close the valve/nozzle at the end of the supply line.
6. Slowly crack the fitting on top of the differential valve to relieve product pressure in the
system. Product will drain from the meter system.
7. As product is bleeding from the differential valve, slowly reopen and close the
valve/nozzle on the discharge line. Repeat this step until the product stops draining
from the differential valve and discharge line valve/nozzle.
8. Leave the discharge line valve/nozzle open while working on the system.

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Installation & Operation
Follow these steps to install and operate the strainer:
1. Flush all new systems – Flushing the system
before the meter has been installed is the
preferred first step. Thoroughly flush the lines
until the system is purged of all foreign
materials. See Disassembly & Reassembly
for disassembly and reassembly instructions.
2. Plan a location for the strainer in the system
providing for the following requirements –
Ensure there is no pipe strain imposed on the
strainer or any other component part of the
meter assembly. The meter and its accessories
must not support the weight of the piping. Plan
for enough space to allow clearance so that the
strainer basket cover and strainer basket can
be easily removed.
3. Install the strainer:
(a) Install the strainer on the inlet side of the meter
(b) Bolt the strainer outlet to the inlet flanged connection of the meter.
(c) Then bolt the inlet piping to the inlet flanged connection of the strainer.
4. Check the strainer daily during the first 100 hours of operation – New or repaired
piping can be the source of welding slag or other foreign material that will block or
rupture the strainer screen–or until no more debris is found in the strainer.
5. Inspect and clean the strainer basket regularly – To ensure proper operation.
6. Follow Strainer Maintenance – Follow the steps in the Maintenance section below.
Maintenance
It's very important to follow preventive maintenance procedures to protect the strainer as well
as the metering system. Foreign matter such as ice can build up inside the strainer and cause
damage to the strainer and the metering system. When foreign matter builds up inside the
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strainer, it can cause pressure to build up inside the strainer. This pressure can cause the
strainer screen to rupture. Foreign matter can then enter the metering chamber. This can
cause serious damage to the meter resulting in failure of the meter.
The following strainer preventive maintenance procedures will keep your strainer functioning
properly, keep strainer repair costs to a minimum, and insure the protection of your metering
system.
Newly installed or repaired systems
· Check the strainer daily during the first 100 hours of operation, or until no more debris is
found in the strainer.
· New or repaired piping can be the source of welding slag or other foreign particles that
can block or rupture the strainer screen.
· Once a system is cleaned out, the strainer should be checked several times every season.
The frequency depends on the specific service conditions, through put and product
cleanliness.
Air Eliminators & Strainers
When an air eliminator is used with the strainer, it must be installed vertically on the strainer.