omisa 7125/LI User guide

Version 1/2013
USE AND MAINTENANCE
INSTRUCTION MANUAL
Machine type:
7125/LI
Serial number:
Year of manufacture:
2020

Version 1/2013
INTENTIONALLY LEFT BLANK

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Dear costumer,
Thanks for having chosen this product! This instruction manual has
been prepared in order to fully appreciate the high quality of our
product. Inside you will find all the necessary information and
warnings for a safe and proper use. We want to advise you to read it
before proceeding with the operations. We are sure that it will be
easier for you to become familiar with the new device and to use it
for a long time with great satisfaction.
Cordially

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INDEX
INDEX _______________________________________________________ 4
LIMITED WARRANTY ___________________________________________ 5
RETURNS OF GOODS __________________________________________ 5
DISCLAIMER OF LIABILITY ______________________________________ 5
PRODUCT IMPROVEMENT ______________________________________ 5
GENERAL DESCRIPTION OF WELDING MACHINE ___________________ 6
GENERAL WELDING CRITERIA –OPTIMAL USE_____________________ 8
SAFETY ALERTS _____________________________________________ 10
READ AND UNDERSTAND______________________________________ 11
GENERAL SAFETY____________________________________________ 11
WEAR SAFETY EQUIPMENT ____________________________________ 12
HEATER IS NOT EXPLOSION PROOF ____________________________ 12
ELECTRICAL SAFETY _________________________________________ 12
CRUSH POINTS ______________________________________________ 13
HEATER IS HOT ______________________________________________ 13
FUSION PROCEDURES ________________________________________ 13
OVERVIEW __________________________________________________ 14
WHAT IS HEAT FUSION ________________________________________ 14
OPERATION _________________________________________________ 15
LOADING PIPE AND FITTING INTO MACHINE ______________________ 15
HEATER IS NOT EXPLOSION PROOF ____________________________ 15
HEATING THE PIPE AND FITTING________________________________ 16
REMOVE HEATER ____________________________________________ 16
FUSION AND COOLING ________________________________________ 16
SCHEDULED MAINTENANCE ___________________________________ 17
CONTRARY DIRECTION IN USING THE MACHINE __________________ 17
INCONVENIENCE AND SOLUTION _______________________________ 17
DISPOSAL ___________________________________________________ 18

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LIMITED WARRANTY
The manufacturer warrants all its manufactured, sold and repaired products to
be free from defects in materials and workmanship.
The manufacturer obligation under this warranty is limited to free reparation or
free replacement at its factory, within 2 years after shipment, except for
purchased items by third parties (e.g. electronic devices, pumps, switches, etc.),
in which case manufacturer’s warrantyis applied.
Warranty applies when returned freight is prepaid and when it can be proved,
upon examination, that the item is defective.
This warranty does not cover damages to products or components repaired or
altered by anyone other than the manufacturer,damaged due to misuse,
negligence or causality, or not operated or maintained according to the
manufacturer printed instructions and warnings.
This warranty is expressly in lieu of all other expressed or implied warranties.
RETURNS OF GOODS
Buyer agrees not to return goods for any reason, except upon the written
consent of the manufacturer., obtained in advance.
The consent, if given, shall specify the terms and conditions and charges upon
which any such return may be made.
For assistance, all inquiries shall be directed tothe manufacturer.
DISCLAIMER OF LIABILITY
The manufacturer accepts no liability for fusion joints.
We recommend to follow qualified welding procedures using the fusion
equipment.
The manufacturer makes no other warranty of any kind, whatever expressed or
implied. All implied warranties of merchantability and fitness for a particular
purpose, which exceed the foreseen obligation, are hereby disclaimed by The
manufacturer.
PRODUCT IMPROVEMENT
The manufacturer reserves the right to make any changes in or improvements
on its products without incurring any liability or obligation to update or change
previously sold machines and/or accessories thereto.

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GENERAL DESCRIPTION OF WELDING MACHINE
The machine is mainly composed by:

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1 - BASIC MACHINE
The carriage assembly consists of one fixed jaw and two mechanically operated
movable jaws.
It is composed by an aluminium support frame, suitably treated to be resistant
to atmospheric agents, which acts as a guide, on which runs a slide to which it
is firmly anchored in the fitting (pipe).
There is a switch that regulates the correct welding depth.
A device helps the extraction of the polywelder.
The machine has a device suitable to house the closing clamps that are
interchangeable to each other depending on the diameter and the kind of pipe
and / or fitting to be welded. In this way, it is possible to weld the most of pipes,
fittings, reductions and bends on the market.
The movement of the machine is guaranteed from a dedicated tools or by
hands for precise welding.
2- POLYWELDER
The polywelder is mainly constituted by handle and heating plate.
The handle is made in order to assure a comfort, safe and effective grip, thanks
to the material used. It is able to absorb heat produced by the heating plate and
assure a perfect solidity to the whole polywelder.
The heating plate is composed by an aluminium casting with a buried electrical
resistance inside. It is equipped with a thermostat to keep the adjusted
temperature.
The plate has different holes in which can be mounted the bushes through the
supplied service keys and screws.
3 - SET OF BUSHES
The set of bushes is manufactured fully complying with the DVS 2208 standard.
They are supplied in a painted steel box with relevant screws and fastening
keys.
It is of great importance to keep bushes in good conditions in order to assure a
perfect welding. For this purpose, always store bushes properly in their box
when not used and at the end of any job, fastened in their proper housing to not
damage them during transportation. However they should be cleaned before
storing from further welding residual by using a soft cloth or paper.
Make bushes cleaning wearing anti-warm safety gloves, paying great attention.
It is ABSOLUTELY FORBIDDEN using water for cleaning and / or cooling
operation.

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GENERAL WELDING CRITERIA –OPTIMAL USE
This welding machine is intended to weld pipes and / or fittings in thermoplastic
material; any other kind of use is to be considered not proper and dangerous
and shall absolute exclude the manufacturing company from any kind of
responsibility.
The welding machine 7125/LI is adjusted to be used EXCLUSIVELY with the
extractable polywelder 10125/TF with the bushes supplied as standard
equipment; the use of any other kind of polywelder and / or bushes do NOT
assure a correct welding; and shall absolute exclude the manufacturing
company from any kind of responsibility.
The welding operation with the machine ART. 7125/LI is done inserting the pipe
inside the fitting, after heating the outside part of pipe and the inner part of fitting
for a stated period of time, by using the extractable polywelder 10125/TF with
bushes.
It would be good rule, before doing all welding operations, to check some
matters:
- Carefully check the efficiency and the perfect running of safety device.
- Check the operation of the mobile parts, make sure they are not locked.
- Check that all parts of the machine are mounted correctly.
- Make sure that all conditions that could affect the normal operation of the
machine and the welding are acceptable.
It is recommended to place the equipment to be able to operate freely and into
the required time, in order to avoid wrong operations that could compromise the
good welding result. It would be good rule to make some trial tests before
proceeding.

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TECHNICAL FEATURES:
Welding capacity: Ø32 –Ø125
Weight with battery and yokes: approx. 12.5kg
Weight complete set: approx. 17.5kg
Outer dimension: approx 455 x 390 x 265 mm
Length of machine: approx 450 mm
Height of machine with yokes: approx. 265 mm
Width of the machine with yokes:approx 390 mm.
Max torque: 44Nm
Battery voltage: 12V/2 Ah
Battery loading time: approx. 1h
Idle speed: 1200 min-1
Compression speed Ø125 mm: < 9 sec.
Tool machine: Makita or equivalent rotary hammer

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SAFETY ALERTS
This hazard alert signal appears in this instruction manual.
When you see this signal, carefully read its meaning.
YOUR SAFETY IS AT STAKE.
The hazard alert signal is usually accompanied by
these words: DANGER, WARNING and CAUTION.
DANGER Indicates a hazardous situation that, if not
avoided, will result in death or seriously
injury.
WARNING Indicates a hazardous situation that, if not
avoided, could result in death or serious
injury.
CAUTION Indicates a hazardous situation that, if not
avoided, may result in minor or moderate
injury.
In this manual you should pay attention to another
word:
NOTICE Can keep you from doing something that might damage the
machine or someone’s property. It may also be used to alert
against unsafe practices.

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READ AND UNDERSTAND
Do not operate this equipment until you
have carefully read and understand all
sections of this manual, and all other
equipment manuals which will be used with
it.This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given
supervision or instruction concerning use of
the appliance in a safe way and understand
the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without
supervision.
Your safety and safety of other depends on care and judgment in the operation
of this equipment.
Follow all applicable federal, state, local and industry specific regulations.
The manufacturer cannot anticipate every possible circumstance that might
involve a potential hazard.
Warnings in this manual and in the machine are therefore not all inclusive.
You must satisfy yourself that a procedure, tool, work method, or operating
technique is safe for you and others.
You should also ensure that the machine will not be damaged or made unsafe
by the method of operation or maintenance you choose.
GENERAL SAFETY
Safety is important.
Report anything unusual that you notice during set up operation.
LISTEN for bumps, rattles, air leaks, or unusual sounds.
SMELL odors like burning insulation, hot metal, burning rubber, hot oil, or
natural gas.
FEEL any changes in the way the equipment operates.
SEE problems with wiring and cables, hydraulic connections, or other
equipment.
REPORT anything you see, feel, smell, listen that is different from your
expectations, or that you think it could be unsafe.

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WEAR SAFETY EQUIPMENT
Wear a hard hat, safety shoes, safety glasses
and other applicable personal protective
equipment.
Remove jewellery and rings and do not wear
loose-fitting clothing or long hair that could
catch on controls or moving machinery.
HEATER IS NOT EXPLOSION PROOF
This heater is not explosion proof. Operation of
heater in hazardous environment, without
necessary precautions, will result in explosion and
death.
If operating in hazardous environment, the heater
should be brought up to a temperature in a safe
environment, then unplugged before entering the
hazardous atmosphere for fusion.
ELECTRICAL SAFETY
Always ensure that power cords are properly grounded.
It is important to remember that you are working in a wet environment with
electrical devices.
Proper ground connections help to minimize the chances
of an electric shock.
Frequently inspect electrical cords and unit for damage.
Replacement and service to damaged components have
to be performed by a qualified electrician.
Do not carry electrical devices by the cord.
NOTICE:Disconnect the machine from the power source before attempting any
maintenance or adjustment.

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CRUSH POINTS
Mechanical operated equipment generate very high
force. Anything caught in the machine will be
crushed. Keep fingers, feet, arms, legs, and head out
of the machine while operating.
HEATER IS HOT
The heater is hot and will burn clothing and skin. Keep the
heater in its insulated heater stand or blanket when not in
use, and pay attention when heating the pipe.
NOTICE: Use only a clean non synthetic cloth such as a
cotton cloth to clean the heater plates.
FUSION PROCEDURES
Obtain a copy of the pipe manufacturer’s procedures
or appropriate joining standard for the pipes welding.
Follow the procedures carefully, and adhere to all
specification parameters.
Failure to follow pipe manufacturer’s
procedures could result in a bad joint.
Always follow pipe manufacturer’s procedures.

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OVERVIEW
WHAT IS HEAT FUSION
The principle of heat fusion is to heat two surfaces to a designated temperature
and then fuse them together by application of force.
This pressure causes flow of the melted materials, which brings on mixing and
so the fusion.
When the PP-R material is heated, the molecular structure is transformed from
a crystalline state into an amorphous condition.
When fusion pressure is applied, the molecules from each PP-R part mix.
As the joint cools, the molecules return to their crystalline form, the original
shapes are changed, and the fitting and pipe have become one homogeneous
unit. The joint area becomes as strong as the pipe itself in both tensile and
pressure conditions.
The principal operations for the optimal fusion include:
Cleaning The area of pipe that will come in contact with the fitting must be
cleaned.
Aligning The fitting must be properly seated on the pipe for correct
alignment.
Heating A rim of melted material must be formed both on the pipe and the
fitting.
Joining The pipe and the fitting must be joined and the pipe has to be fully
seated within the fitting.
Holding The molten joint must be kept immobile until it has cooled
adequately.
Inspection Visually examine the entire circumference of the joint for
compliance with standards established by the company, customer,
industry, federal, state or local regulations.

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OPERATION
LOADING PIPE AND FITTING INTO MACHINE
Clean the inside and the outside of pipe ends
and fitting that are to be fused.
Insert the pipe and adjust the position with
appropriate tool.
Insert the fitting in the other side of the machine.
Place the proper locks at the end of the fitting, to
ensure stability.
HEATER IS NOT EXPLOSION PROOF
This heater is not explosion proof. Operation of
heater in hazardous environment, without
necessary precautions, will result in explosion
and death.
If operating in hazardous environment, the heater
should be brought up to a temperature in a safe
environment and then unplugged before
entering the hazardous atmosphere for fusion.

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HEATING THE PIPE AND FITTING
Fit the polywelder between pipe and fitting and
start to put towards the yokes acting on rotary
hammer.
Mechanical operated equipment generates very
high force. Everything caught in the machine will
be crushed. Keep fingers, feet, arms, legs, and
head out of the machine while operating.
The heating up time starts after that the required
welding depth is reached. The heating up time
changes against the diameters and it is indicated
into the instructions manual of the pipe
manufacturer.
REMOVE HEATER
After the heating time is reached, the welding
machine has to be opened speedily and the
polywelder has to be taken out quickly.
FUSION AND COOLING
Close the machine speedy up to heated up pipe end
reaches the heated fitting socket. Then push slowly
pipe and fitting together up to welding depth is reached.
The welded connection can be taken out after the
cooling downtime is reached, see pipes manufacturer
instructions,.
After completing the pipe manufacturer’s specified
cooling time, inspect the joint. A good joint will have a
uniform melt ring perfectly perpendicular to the pipe.
NOTICE: There should be no gaps or voids between
the fitting and the pipe.

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SCHEDULED MAINTENANCE
The scheduled maintenance operations are listed as follows:
-Completely clean the machine at the end of any job, especially if the
welding is long.
-Check the PTFE covering of the bushes. The surface should be
homogeneous without scratches, otherwise bushes should be replaced
to assure a good welding.
- At the end of each job, (with the instrument still warm), clean the bushes
using a cloth or soft paper; completely remove any further residual of
effected welding. This operation should be done carefully wearing
anti-warm protection gloves.
-IT IS ABSOLUTELY FORBBIDDEN TO use water for cleaning and/or
cooling operation.
In order to make the maintenance operations is required:
-Properly insulation of the electrical plant of the polywelder; UNPLUG
THE FEEDING CABLE FROM THE ELECTRICAL SUPPLY.
CONTRARY DIRECTION IN USING THE MACHINE
The welding machine 7125/LI was designed and manufactured for socket
welding of pipes and / or fittings in thermoplastic material and for stated
dimension of them. So, it should NOT be used for jointing other materials or for
any other uses.
INCONVENIENCE AND SOLUTION
INCONVENIENCE SOLUTION
The polywelder does not work. Check that:
1. The electric plant is connected and comply
to the technical features of the machine.
2. Switches at the beginning of the plug and
on the machine are closed.
3. The electric plant is not averaged; if
needed, make the plant checked by
qualified personnel.

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DISPOSAL
As the machine is manufactured by normal metal material, in case of scrapping,
it will be needed only to deliver it to an authorized scrapping component
separating centre.
Components that comes with the picture shown here at the right side,
meaning waste of electric and electronic equipment, have to be
disposed separately by authorized collection.