Carrier Weathermaster 48P030-100 Controls, Start-Up, Operation, Service, And Troubleshooting page 291

Electrical
Incoming Voltage L1-L2________
Average Voltage ______________ (L1-L2 + L1-L3 + L2-L3) / 3
Voltage Tolerance ______________ (Average Voltage – Nameplate Voltage) / Nameplate Voltage
Voltage Imbalance ______________ (Maximum Deviation Voltage / Average Voltage) x 100
The Maximum Deviation Voltage is the voltage that is furthest away from the Average Voltage.
Supply Fan and Exhaust Fan
NOTE: Motor amp readings should be taken at maximum airflow (100% speed or maximum speed).
IMPORTANT: Verify all supply fan bearings contain grease prior to performing start-up.
Supply Fan rpm
Supply Fan Motor Amps
Exhaust Fan Amps
Cooling
NOTE: Full cooling start-up should only occur when the outdoor air temperature is above 60°F for verification of factory charge
using charging charts. Cooling test should be performed at high airflow (100% or maximum air balanced airflow). Force econo-
mizer closed and disable Humid-MiZer operation when measuring cooling performance.
Compressor Oil Level
Fill in the circle to indicate sight glass oil level (if equipped with sight glasses) with the compressor off.
Circuit A Compressor 1
3/4
1/2 Top sight glass
1/4
Circuit B Compressor 1
3/4
1/2 Top sight glass
1/4
Outdoor Air Temperature (OAT)
Return Air Temperature (RAT)
High Cool Supply Air Temperature (SAT)
Circuit A
Compressor 1
Compressor 2
Compressor 3
Circuit B
Compressor 1
Compressor 2
Compressor 3
Circuit A
Suction Line
Liquid Line
Discharge Line
Circuit B
Suction Line
Liquid Line
Discharge Line
 Verify factory refrigerant charge using the charging charts.
Use the proper method for MCHX or RTPF to verify the charge as described in "Refrigerant Charge" on page 163. SCT, OAT and SST are used for
MCHX coils. While checking the charge, verify the TXVs are controlling to the correct 12°F superheat as set by TXV supplier. Make note if unit has
Humidi-MiZer system. Condenser fans must be at 100% speed when verifying refrigerant charge.
Charge Adjustment
START-UP LOG (COOLING)
L1-L3________
Fan 1
Motor 1
Motor 1
Motor 3
Motor 5
Circuit A Compressor 2
3/4
1/2 Top sight glass
1/4
Circuit B Compressor 2
3/4
1/2 Top sight glass
1/4
______________ °F DB
______________ °F DB
______________ °F DB
Voltage L1-L2________
Voltage L1-L2________
Voltage L1-L2________
Voltage L1-L2________
Voltage L1-L2________
Voltage L1-L2________
Temp ___________°F
Temp ___________°F
Temp ___________°F
Temp ___________°F
Temp ___________°F
Temp ___________°F
 ___________ lb
L2-L3________
Motor 2
Motor 4
Motor 6
Circuit A Compressor 3
3/4
1/2 Top sight glass
1/4
Circuit B Compressor 3
3/4
1/2 Top sight glass
1/4
______________°F WB
______________°F WB
L1-L3________ L2-L3________
L1-L3________ L2-L3________
L1-L3________ L2-L3________
L1-L3________ L2-L3________
L1-L3________ L2-L3________
L1-L3________ L2-L3________
Press __________ PSIG
Press __________ PSIG
Press __________ PSIG
Press __________ PSIG
Press __________ PSIG
Press __________ PSIG
CL-13
Amps________ A
Amps________ A
Amps________ A
Amps________ A
Amps________ A
Amps________ A
Superheat _____________ °F
Supercooling __________ °F
Superheat _____________ °F
Supercooling __________ °F