Carrier 48PG03-16 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 117

Use the above temperature and pressure readings, and find the
intersection point on the cooling charging chart. If intersection
point on chart is above line, add refrigerant. If intersection point
on chart is below line, carefully recover some of the charge.
Recheck suction pressure as charge is adjusted.
The TXV is set to maintain between 10 and 15 degrees of
superheat at the compressors. The valves are factory set and
cannot be adjusted. Do not use A TXV designed for use with
R-22.
To Use the Cooling Charging Charts, Units With Humidi- -
Mizert Adaptive Dehumidification System
NOTE: All circuits must be running in normal cooling mode.
Indoor airflow must be within specified air quantity limits for
cooling. (See Table 79.) All outdoor fans must be on and
running at high speed. Use the Cooling Service Test Outdoor Fan
function (Service Test→COOL→OF.OV) to start all outdoor
fans. If the outdoor temperature is low, the Motormaster®
outdoor fan control device may need to be temporarily bypassed
by rewiring the power leads to obtain full speed.
R4 R410A RE REFRI RIGERANT
OUTDOOR F R FAN M N M UST BE OPERATING ON H
16 160
14 140
Add dd Cha harge if Abov bove the the Cur urve
12 120
10 100
80 80
Rem ove
60 60
40 40
20 20
150 150 200 200 250 25 300 00
Co mp re ss ssor Disc isc h a rg e P re ss
Fig. 49 --- Charging Chart — 48/50PG05
RANT
N HIGH S H SPEED
ve Ch Char arge if if Belo low the Cu Curve ve
350 350 400 400 450 450 500 500 550 550 600 600
ssu re , [p sig sig]
C07040
R4 R410A RE
OUTDOOR F R FAN M N M UST BE OPERATING ON H
16 160
14 140
12 120 Add dd Cha harge if Abov bove the the Cur urve
10 100
80 80
60 60
40 40
20 20
150 150 200 200 25 250 300 00
Co mp re ss ssor Disc
Fig. 50 --- Charging Chart — 48/50PG06
R410A RE R4
OUTDOOR F R FAN M N M UST BE OPERATING ON H
16 160
140 14
120 12
Add dd Cha harge if Abov bove the the Cur urve
100 10
80 80
60 60
40 40
20 20
150 150 200 200 250 25 300 00
Compre ss ssor Disc
Fig. 51 --- Charging Chart — 48/50PG07
117
REFRI RIGERANT RANT
N HIGH S H SPEED
Rem ove ve Ch Char arge if if Belo low the Cu Curve ve
350 350 400 400 450 450 500 500 550 550 600 600
isc h a rg e P re ss ssu re , [p sig sig]
REFRI RIGERANT RANT
N HIGH S H SPEED
Rem ove ve Ch Char arge if if Belo low the Cu Curve ve
350 350 400 400 450 450 500 500 550 550 600 600
isc ha rge P re ss ssure , [psig sig]
C07041
C07042