Assembly Instructions and Safety Recommendations for Metal Expansion Joints

01In order to ensure that the Expansion Joint work properly and

in order to prolong its working life, it is necessary to respect a

series of precautions that make the Expansion Joints almost

maintenance free elements.

The most important precautions that must be observed are as follows:

Installation:

1. Care should be taken to avoid any damage to the bellows

such as dents, scores, arc strikes and weld splatters.

2.

installing the Expansion Joints must be performed in

MACOGA, including both the direction and magnitude of

the movement.

3.

tude as laid out in the instructions supplied by MACOGA.

The Expansion Joints should not be stretched or com

pressed in order to absorb any defects along the length

of the pipe or to rectify any misalignments unless this was

taken into account during the initial design and the manu

facturing process.

4.

secured, all of the shipping devices, if any, must then be

removed and not before.

5.

Post installation inspection prior to system pressure test:

1.

correct place.

2. Check that the Expansion Joint has been correctly insta

3. Check that all shipping devices have been removed.

4. Check that all of the supporting structures and anchora

ge have been correctly installed as planned.

5. Check that there are no misalignments in the Expansion Joint.

When in doubt about an installation procedure please contact MACOGA Technical Department before attempting to install the expansion joint.

MACOGA’s warranty may be void if improper installation procedures have been used.

MACOGA expansion joints are maintenance free.

Assembly Instructions and Safety Recommendations for Metal Expansion Joints

02Inspection during and immedia-tely after system pressure test:

1. Check that there are no leaks and no loss of pressure.

2. Check that the bellows are stable.

3. Check that all of the anchorage, guides, Expansion Joints

and other components of the system are secure and

resistant.

Periodic in-service inspection:1. Check to see if the Expansion Joints in the manner for

which they were designed are absorbing the movements.

2. Check for any unexpected vibrations.

3. Check for the existence of any signs of external corro

sion, slack mechanical components (screws, tie rods,

etc.) and also check that the anchorage points, guides,

etc. are in perfect working order.

4. Check that dust and other particles haven’t built up

between the convolutions of the Expansion Joint as this

could limit or restrict its movement.

1. Inspect for possible damage during shipment, i.e.,

dents, broken hardware, water marks on carton, etc.

2. Avoid damaging the bellows with knocks that can

cause dents on the convolutions, strikes, weld

spatters, etc.

3.

tion.

4. Avoid any movement of the Expansion Joint with its

ends misaligned or beyond the limits established at

the time of supply, as regards magnitude of move

ment, maximum angle, etc.

5. Install the Expansion Joint in the proper length as

recommended by MACOGA.

6.

the established limits, which include direction and

magnitude of movement.

7. Use only designated lifting lugs.

8. Install the Expansion Joint pointing in the direction

9. Remove all shipping devices (yellow colour painted)

after the installation is complete and before any

pressure test of the fully installed system.

10. Never exceed the permissible test pressure.

The above recommendations are included to avoid the

most common error that occur during installation.

When in doubt about an installation procedure please contact MACOGA technical department before attempting to install the expasion joint.