Mechanism installation
Matters that need attention before installing!!
If any of the scenarios below occur and damage the paddlewheel, the warranty is void.
If the device material is PC then it is not resistant to PVC glue with its strong gas and lubricant for PVC pipe. Therefore, before installing the paddlewheel flowmeter you must be sure the glue is dry between the connecting pipe and adapter.
EPDM seal material only works with certain chemicals, but not oil.
Please notice if chemicals are flowing vertically it could potentially damage the paddle wheel flowmeter.
If the paddle wheel flowmeter is not able to be aligned with the main pipe or is taken as supported point on the pipeline, the flowmeter may bear unexpected force which could shorten usage life and cause water leakage.
During the installation, it is better to use hands to lock the union nuts until there is no water leakage instead of using tools which could damage the flowmeter.
Inaccurate piping may cause liquid leakage and lead to the paddle wheel flowmeter’s damage.
When valving, water hammer should be carefully avoided to prevent paddle wheel flowmeter damage.
The operational device of the paddle wheel flowmeter is not UV resistant. Therefore, we suggest to cover it with protector if installed outdoors.
The seller will not be responsible of free maintenance for any defect or malfunction incurred by individual causes.
If the paddlewheel flowmeter is transported with it's piping system to another site without protection it could be damaged.
When installing the paddle wheel flowmeter there should be an appropriate amount of spacing for union and flange installation. If not, the following accidents may occur:
Crack on union nut
Crack on adaptor
Stripped T-connector thread
Water leakage due to insufficient compression or missing sealing
Within correct installation, the paddle wheel flowmeter can resist maximum pressure up to 10 kg/cm². Do not use too much torque to lock the union nuts, otherwise the following accidents could occur :
Crack on union nut
Crack on adaptor
Stripped T-connector thread.
Sealing failure due to excessive compression.
How to choose an installation location
The 1st principle for choosing an installation location where the pipe is filled with liquid to avoid issues caused by air bubble or precipitation in the pipe.
The 2nd principle is allowing the flow in the pipe to be fully developed by having enough length on both sides of the straight pipe. This means no equipment should be left on either side like adaptors, elbow pipe, valves or pumps.
The flow volume measurement of LORRIC’s paddle wheel flowmeter is based on the rotating mechanism of the paddle wheel. Paddle or axel could be lost under long-term abrasion or impact by external forces.Users should pay careful attention to any equipment that may cause the above damage.
The LCD display screen should not be exposed to direct sunlight that could cause visibility issues and a shorter usage life. Therefore, installing the flowmeter under direct sunlight should be avoided or with a sunlight protector is recommended.
There should be at least 10D (10x the inside diameter of the pipe) of straight pipe in front of the flowmeter and 5D of straight pipe behind the flowmeter to stabilize flow.
During flow movement, where the liquid is coming from means the front and where it’s moving to means the back. Generally, it is recommended that the flowmeter be installed at a position 10D (10x inside diameter of the pipe) at the front and 5D at the back (as shown in the figure below). If the inside of the pipe diameter is unknown, the outside of the diameter can be used.
Install the paddlewheel flowmeter before the valve.
The flow meter should be installed upstream of valve, so the fluid will be fully developed. This recommendation is also applicable to other piping components that may affect the flow field.
Vertical pipe
Please choose the vertical pipe with an bottom-up flow direction.
Horizontal pipe
Please choose the location with full liquid, like the lower part of the inclined pipe.
LORRIC’s paddlewheel flowmeter should not be installed at the top right or bottom side of the pipe in order to avoid the interruption of air bubbles or precipitate.
If the paddle wheel flowmeter is installed on the side, which also affects flow measurement and causes a shorter product life.
Please notice the air bubble in the pipe to avoid measurement error. If the location of installation for the paddlewheel is close to a tank where pressure is low. We recommend installing a valve at the pipe exit to avoid generating any air bubbles.
If air bubbles frequently generate in the pipe it may lead to over 5% non-reproducible measurement error which should be avoided.
Installation steps for brand-new products
Take off union adapter and nuts, paddle set, and device from T-connector
Install union adapter and nuts with pipe: Install the union adapter and nuts to the pipe with glue. Before going to the next step, the glue should be completely dry.
Lock T-connector and pipe with union adapter
Install paddle set and seals with T-connector: The arrow sign on the top of the paddle set means the direction of flow, the top side of the arrow sign means the direction of line-out. As below image, please refer to it before installation.
Install device to the paddle base and rotate it clockwise to the end. With deterioration design, please watch the installation direction and do not force it.
Fix device with paddle base through the side of it: The screws for fixing the device with the paddle set are not leakproof. Please avoid excessive force when screwing in the device which may cause damage.
How to rotate the display screens’ direction
Please turn off the device and unplug before disassembling it.
Take off four hex socket head cap screws on the top housing according to above image.
Seperate top and bottom housing.
Be aware when separating the top and bottom housing because there are many wires connecting both.
Rotate top housing to a desired viewing orientation.
Do not rotate the top housing too many times to prevent the cables from being damaged from unnecessary pulls.
In the bottom housing there is an O-ring with an inner groove for a thread hole . For it to work properly, please confirm there is no particle, fiber or any object that may break the sealing function before attaching the top and bottom housing.
Combine top with bottom housing.
Tighten four screws on top housing.
Too much torque may damage the device.
Finish.
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