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American Power Conversion FM, DX manual Quarterly Preventive Maintenance, Mechanical, Electrical

Models: DX FM

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Quarterly Preventive Maintenance

Quarterly Preventive Maintenance

*Perform all the Monthly Preventive Maintenance items and the items below. Prepared by: _________________________________

Model Number: ______________________________

Serial Number: _______________________________

Date: _________________

Mechanical

Check the refrigeration lines for leaks.

Verify that the blower/motor evaporator hardware is tight.

Electrical

Record the amperages for the following components.

Component

L1

L2

L3

FLA

Evaporator fan motors

Motor #1

Motor #2

Condenser fan motors

Motor #1

Motor #2

Motor #3

Motor #4

Compressors

Compressor A

Compressor B

Reheat

Humidifier

Glycol pumps

Pump #1

Pump #2

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting

71

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American Power Conversion FM, DX manual Quarterly Preventive Maintenance, Mechanical, Electrical

Contents

60 Hz Operation, Maintenance, and TroubleshootingNetworkAIR FM DX Precision Air Conditioner Page American Power Conversion Legal Disclaimer Page General Information SafetyOperation ContentsMechanical and Refrigeration Inspection Checklist Temperature alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Humidity alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Alarm delay Network Management Card MaintenanceWarranty TroubleshootingPage Modules, Systems, and Groups General InformationModule SystemGroup Symbols Used in this Manual SafetySafety symbols that may be used in this manual Cross-referencesymbols used in this manualLockout/tagout Safety HazardsElectrical hazards Static dischargeOperation Display InterfaceFunction Scrolling status screens Using the Display InterfaceStatus Screen Name Status Information DisplayedPassword entry Main menu screenNavigating the interface Factory default settings Change settingsStart the System Stop the SystemCommissioning Power On/Off Procedure Power onPower off Initial Inspection Checklist Commissioning ChecklistsMechanical and Refrigeration Inspection Checklist Electrical Inspection ChecklistEnsure that Ensure thatUser Interface Box Inspection Checklist Mechanical Inspection Air-cooledChecklistEnsure that Ensure thatWhile the equipment is operating, ensure that Start-upInspection ChecklistFinal Inspection Checklist Ensure thatOwner Acceptance System options System ConfigurationPage Up Down System delays Building management Sensor setupSettings for fluid-cooledoptions Applicable SettingsFluid-CoilType Valve types Flow Switch Multi Cndsr Vlv 3-wayActuator types Coil Fluid 3-wayEcon Isolator Valve Enable Economizer isolation valve optionalEcon Isolator Close Dly Econ Isolator Open Dly Page Input contacts Contacts and RelaysDescription/Function Output relays Module Configuration Configure ModuleAlarm detectors Module Control Calibrate airflow manuallyCalibrate airflow automatically Reset Variable Frequency Drive Reset humidifierSet up humidifier How the modes work Control the EnvironmentDX Dehumidify. Similar to DX cooling, the output for dehumidification is determined by the difference between the setpoint and the average return humidity from each of the Modules in the System if more than one Module is present. The deadband is used to engage both compressors incrementally with increasing demand. Each Module in the System is assigned an equal division of the deadband a percentage of relative humidity. Both compressors in a Module are engaged when the assigned division of the deadband above the setpoint is reached. If the average return humidity reaches the setpoint plus the entire deadband, all of the compressors will be engaged until the humidity drops below the setpoint plus the deadband. Unlike DX cooling, the compressors in each Module are normally set to work as a single unit instead of separately. The use of one or two compressors per Module is based on the Dehum. Capacity setting Path Main Menu Setup System # System Config System Options Setpoints Deadbands Two-ModuleSystem Cool Deadband Compressor AllocationTo set the dehumidify deadband for your System Essential functions ModesPID controls How to tune the PIDsControl PID Tuning CorrectionProportional IntegralTemperature alarms AlarmsHumidity alarms Maintenance intervalsAlarm delay Group configuration GroupMode Group settingsRange Share ifSystem failure events Password and time-out DisplayTemperature and pressure units Date and timeHow to update the firmware Adjust displayProduct data Reset to defaultsNetwork configuration Network ConfigurationView Status Readings Scrolling status screensModule status Group status System statusPath Main Status System # Path: Main > Status > GroupView log View Event LogMajor or minor alarm LEDs Respond to AlarmsView active alarms Clear active alarmsAlarm messages and suggested actions Displayed Alarm MessageAction Required Displayed Alarm Message Action RequiredCondensate Pump Fail Displayed Alarm Message Env Temperature LowAction Required Displayed Alarm Message Action RequiredSystem Options Displayed Alarm Message Action RequiredHumidifier System Config System Options Displayed Alarm MessageAction Required Comm Lost state, or OffDisplayed Alarm Message Action RequiredSupply Humidity High Displayed Alarm Message Action RequiredSystem Comm Lost Network Management Card Quick ConfigurationTCP/IP configuration methods OverviewAPC Device IP Configuration Wizard BOOTP and DHCP configurationPath Setup System Network Config A Vendor Class Identifier APC by default Remote access to the control console 1.Choose Network from the Control Console menu Control consoleOverview Access a Configured UnitWeb interface Telnet/SSHFTP/SCP SNMPRecover From a Lost Password Monthly Preventive Maintenance MaintenanceCleanliness EnvironmentElectrical MechanicalQuarterly Preventive Maintenance MechanicalElectrical Verify the following modes of operation Functional testsFull cooling Full reheat Humidification Dehumidification MultiCool EconomizerCleanliness Semi-AnnualPreventive MaintenanceMechanical ElectricalMeasure the refrigerant pressures Functional testsProblem TroubleshootingPossible Cause Corrective ActionPossible Cause ProblemCorrective Action Compressor fails toPossible Cause ProblemCorrective Action Compressor noisyPossible Cause ProblemCorrective Action Head pressure tooPossible Cause ProblemCorrective Action Suction pressure tooPage One-YearFactory Warranty WarrantyTerms of warranty Non-transferablewarrantyWarranty claims Warranty Procedures ClaimsParts Page Page APC Worldwide Customer Support 990-3127990-3127 10/2007