APC ACRD500 Installation Manual download pdf (Page 19)

11InRow RD Operation and Maintenance

8. Charge the rest of the calculated liquid refrigerant very slowly through the suction port.

9. Verify that the sightglass is clear. If there is excessive bubbling in the sightglass, make sure the

system high side pressure is above 15.9 bar (230 psi) and Superheat and Subcooling are within

parameters (10-12 for Superheat and 8-10 for Subcooling). If additional charging is required,

front seat the receiver outlet shutoff valve and weigh in the additional charge at the Schrader port.

Note: Since good performance during low ambient temperatures depends on proper

refrigerant charge, it is very important that this phase of the installation procedure be

done carefully. Poor system preformance can be due to too little or too much charge.

Caution: Fast charge of liquid refrigerant through the suction

port may damage the compressor.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 59 60

No comments

APC ACRD500 Installation Manual Page 19