testo 549 Manual De Instrucciones página 5

en
Ensuring safety
•
Please read this documentation through carefully and familiarize yourself with the
product before putting it to use. Pay particular attention to the safety instructions and
warning notices in order to prevent injuries and damage to the product.
•
Only perform maintenance and repair work on this instrument that is described in the
documentation. Follow the prescribed steps exactly and only use the tool
recommended. Use only original spare parts from Testo.
•
The Valve Replacement Kit is compatible with the models testo 549, 550, 557
and 570.
•
The Valve Replacement Kit may only be replaced by qualified personnel.
•
Wear protective goggles and safety gloves when replacing the valve spare parts.
Use
Preparation
The Valve Replacement Kit comprise all the necessary spare parts for replacing the valve
positioner of a 2-way manifold (e.g: testo 550). Use two Valve Replacement Kits to
completely replace a 4- way manifold (e.g.: testo 557).
For the replacement you will also need:
- a torque wrench (8 Nm) with a socket wrench size 14
- a damp cloth for cleaning
Replacing the valve positioner
Remove valve positioner
1 - Place the instrument on a non-slip base.
2 - Remove the locking split pin on the plastic handle using a suitable tool. Then remove the
plastic handle on the valve positioner by simply pulling.
3 - Remove the valve positioner from the
valve block by turning the valve positioner
anti-clockwise using the torque wrench.
4 - When removing, make sure that the valve block does not get soiled in any way.
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Check that there is no dirt on the valve block or thread. If necessary, clean the valve
block and thread using a damp cloth.
1 Plastic handle
2 Locking split pin
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