APC ACRA100 Installation Manual Page 47
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39Pumped Refrigerant System Operation and Maintenance
Persistent Receiver Pumped
Dry
Critical • Verify that there is adequate refrigerant in the system.
• Verify that the Cooling Modules are functioning properly.
• If the problem persists, contact Technical Support.
Primary Power Source
Failure
Warning • Ensure that the power source is connected properly and within
specifications.
• If the problem persists, contact Technical Support.
Secondary Power Source
Failure
Warning • Ensure that the power source is connected properly and within
specifications.
• If the problem persists, contact Technical Support.
Pump 1 Discharge Pressure
Sensor Fault
Critical • Make sure the pressure sensor is connected properly.
• If the problem persists, contact Technical Support.
Pump 1 Fault Warning • Contact Technical Support.
Pump 1 High Head Pressure Warning • Contact Technical Support.
Pump 2 Discharge Pressure
Sensor Fault
Critical • Make sure the pressure sensor is connected properly.
• If the problem persists, contact Technical Support.
Pump 2 Fault Warning • Contact Technical Support.
Pump 2 High Head Pressure Warning • Contact Technical Support.
Pumps Vapor Locked Warning • Contact Technical Support.
Pump Outlet Temperature
Sensor Fault
Warning • Make sure the temperature sensor is connected properly.
• If the problem persists, contact Technical Support.
RDU Communication Fault Critical • Contact Technical Support.
Receiver Pumped Dry Warning • Verify that there is adequate refrigerant in the system. Add refrigerant if
necessary.
• If the problem persists, contact Technical Support.
Refrigerant Loss Detected Critical • A refrigerant leak has been detected.
• Identify the source of the leak.
• Have the leak repaired and the refrigerant replaced.
• For assistance, contact Technical Support.
Refrigerant Loss Detection
Disabled
Warning • At least one of the following conditions has occurred:
- Refrigerant was added to the system
- One or more CMs have been added or removed from the system.
- One or more CMs have been placed into Standby, Stop or Maint mode.
• If the change is permanent, the refrigerant leak detector must be
recalibrated.
• For assistance, contact Technical Support.
Starting Conditions Not
Satisfied
Warning • Ensure the chilled water temperature is within specifications.
• If the problem persists, contact Technical Support.
System Stop Critical • Check for other alarms (Water Leak Detected, Persistent Receiver
Pumped Dry, Pump Fault, Pumps Vapor Locked).
• If the problem persists, contact Technical Support.
Subcooler Outlet
Temperature Sensor Fault
Warning • Make sure the sensor is connected properly.
• If the problem persists, contact Technical Support.
Temperature/Humidity
Sensor Duplicate CAN
Address
Warning • Inspect the DIP switches on the temperature/humidity sensors and
ensure that all the settings are unique.
Temperature/Humidity
Sensor N Added
Informational • Notification that the addition of the new sensor has been recognized by
the RDU.
Temperature/Humidity
Sensor N Removed
Informational • Notification that the removal of the sensor has been recognized by the
RDU.
Alarm Message Severity Action Required
- Operation and 1
- Maintenance 1
- 동봉된 CD 안에 한국어 매뉴얼이 있습니다 2
- Contents 5
- General Information 9
- Commissioning 11
- Ensure that the: 12
- Ensure that: 14
- Start-up Inspection Checklist 15
- Final Inspection Checklist 15
- Operation 16
- System Architecture 17
- OA Piping Diagram 20
- RA Piping Diagram 21
- Display Interface 22
- Using the Display 23
- Navigating the screens 24
- Sub-menus 24
- Using the Path statement 25
- Password entry 25
- Start the RDU 26
- Stop the RDU 26
- Start a CM Remotely 26
- Stop a CM Remotely 26
- General Configuration 27
- CM Configuration 29
- Identify the cooling modules 30
- Group Configuration 31
- Control the Environment 32
- Measurements 33
- Group PIDs 34
- Tune the PID loop 35
- RDU (component) run hours 36
- Reset RDU run hours 36
- CM (component) run hours 36
- Reset CM run hours 36
- Thresholds 36
- Service intervals 37
- Display Settings 38
- Adjust display 39
- Display units 39
- Network Configuration 40
- View Status Readings 41
- Cooling group status 44
- About the RDU 44
- Path: Main > View Alarms 45
- Path: Main > Clear Alarms 45
- CM alarm messages 49
- Network Management Card 52
- .ini file utility 53
- BOOTP and DHCP configuration 53
- Option 43 = 01 04 31 41 50 43 54
- 01) is the code 54
- 04) is the length 54
- Command line interface 55
- CM Display 57
- Display Operation 58
- Environment 60
- Cleanliness 60
- Mechanical 61
- Electrical 61
- Functional tests 62
- Troubleshooting 63
- 1/2012990-3421B-001 68
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