5 Use
7
5 Use
testo 550s and testo 557s are digital manifolds for maintenance and service
work on refrigeration systems and heat pumps. They may only be used by
qualified authorized personnel.
The functions of the instruments testo 550s and testo 557s mean they can
replace mechanical manifolds, thermometers and pressure/temperature charts.
Pressures and temperatures can be applied, adapted, tested and monitored.
The instruments testo 550s and testo 557s are compatible with most non-
corrosive refrigerants, water and glycol. The instruments testo 550s and testo
557s are not compatible with refrigerants containing ammonia.
The products must not be used in potentially explosive atmospheres!
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