Specifications

Page 53 from 63
6720649497 SM HP270-1 2012/09 en
7.4 Other recommendations and definitions
Pict.60 – General refrigeration circuit representation
 Pre-assessment for technical partners (refrigerant circuit)
 experience in training, installation, service, maintenance, commissioning, retrofitting, system
design
 current experience in other refrigerant circuit appliances as air conditioning, other heat pumps
types, chillers, …
 previous experience in refrigerant recovery, recycling, reclamation or charge in system
 type of refrigerants already handled
 level and training needs
 Specific tools for R134a availability
Refrigerant circuit parameters
- suction pressure (at evaporator outlet / compressor inlet – use pressure gauge connection available)
- suction temperature
- discharge pressure (at compressor outlet / condenser inlet – use pressure gauge available)
- discharge temperature
- Liquid temperature (at condenser outlet / expansion valve inlet)
For condenser heat exchanger check:
- temperature into the evaporator;
- temperature out of the evaporator
- temperature into the condenser
- temperature out of the condenser