8 Using the product
13
8 Using the product
The testo 560i scale and the testo Smart Valve can either be used in
conjunction with the testo Smart App or in conjunction with one of the testo
550s and testo 557s manifolds or with two testo 549i smart probes.
This product is suitable for gaseous charging of refrigeration systems.
When charging with liquid refrigerant, an evaporation adapter must be
used to protect the compressor or the flow rate limited via the manifold.
The valve opens and attempts to fill with the set charge quantity. When
charging by target weight, no pulsating charging takes place.
The suitable filling mode must be selected individually based on the
AC system which needs to be filled.
ATTENTION
Charging liquid refrigerant too quickly can damage the compressor!
- Only charge liquid refrigerant slowly.
It is necessary to enter the maximum capacity of the system to prevent
overcharging.
If unsure of total charge and information about the system is
unavailable, reclaim all refrigerant.
If the refrigerant bottle is empty and needs to be replaced with a new
one, the value of the previously filled quantity must be noted down.
Despite automation, the system can be overcharged. Reasons for this
may be due to specific local or system-specific conditions. The
technician must always monitor the automatic charging.
If the superheat cannot be measured (display shows xx° superheat),
then automatic charging cannot be started. Measuring the superheat
forms the basis for automatic charging.
Generally, charging stops in the following situations:
• The weight on the scale changes suddenly or involuntarily.
• The maximum charge quantity has been reached, although the final
value (SH/SC) has not yet been reached.
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