Carrier AquaEdge 19DV Series Start-Up, Operation And Maintenance Instructions Manual page 17

19DV Field Procedure for new units with
less than 15 psig holding charge or units
suspected of leaking.
1. Attach compound gage to vessel
2. Note ambient temperature
Raise pressure to 20 psig (138 kPa)
using Nitrogen with added tracer gas for
electronic leak detection
Yes
Evacuate vessel and
perform standing
vacuum test
Pass
No
Dehydrate
Charge unit
NOTE: Be sure to add refrigerant
as gas until chiller pressure exceeds
15 in Hg (vac) / 380 mmHg (vac)
to avoid possible tube freezing.
Leak check
Pass
Yes
Fig. 16 — 19DV Leak Test Procedures
17
No
Locate and mark all
leak sources
Repair all leaks