103
SERVICE INFORMATION
Basic Service
NOTE: Always wear gloves and eye protection when working with refrigerant.
NOTE: Purge lines before connecting to service ports.
Figure 50 - Refrigeration Service Tools and Service Port Locations
Monitoring the A/C System
Monitoring with HMI
The HMI can monitor the A/C temperature and pressure readings through the service function menu. Enter
HMI menu function by pressing the top two buttons simultaneously. Navigate to
Service (Password 1234)
> Inputs > Refridge Diag
.
The Refridge Diag menu will display the following:
WARNING:
Technicians must be certified by an EPA-approved training and certification
program to service any HVAC equipment, regardless of the refrigerant.
•
Discharge Pressure (DSCHRG PS)
•
Discharge Condensing Temperature (DCH CON TMP)
•
Suction Pressure (SUCTION PS)
•
Suction Saturation Temperature (SUC SAT TMP)
•
Suction Line Temp (SUC LIN TMP)
• Superheat Temperature
• EEV Position Percentage
• Compressor Hertz
• PWM Rate Percentage
• Oil Voltage - Yes/No
Red
Hose
Yellow
Hose
Blue
Hose
High Side
Service Port
Low Side
Service Port
Service
Port
SUCTION
DISCHARGE
Recovery Machine
Refrigerant Recovery
Cylinder
Gauge Set
Vacuum Pump
