APC ACRC301S Guía de usuario descargar pdf (Pagina 50)

Troubleshooting: Semi-Annual Preventive Maintenance

44 InfraStruXure InRow RC—Operation and Maintenance

Water carryover • Improper fan speed selected • Select the next highest fan speed setting. For

example, change the fan speed setting from Low

to Med/Low.

• Inlet water temperature is too

low

• Verify that the temperature of the inlet water is

within the specified range.

• Room humidity is too high • Adjust setpoint on dehumidifying equipment.

• Add additional dehumidifying equipment.

• Dirty coil • Clean the coil.

• Dirty filter • Clean the air filter.

••

Cooling unit sound

is higher than

expected

• Improper fan speed selected • Select a lower fan speed.

• Incorrect placement of

remote temperature sensor

• Verify that the remote temperature sensor is

properly located in the cold aisle.

Temperature control

not tight enough

• Improper placement of

remote temperature sensor

• Verify that the remote temperature sensor is

properly located in the cold aisle.

• Improper PID tuning • APC Worldwide Customer Support at a number

on the back cover of this manual.

Water on outside of

cooling unit

• Condensate drain hose is not

connected and/or not

properly routed outside the

Cooling Unit

• Verify that the condensate drain hose is properly

connected to the pump and properly routed

outside of the cooling unit.

• Verify that the condensate drain line does not

exceed 12 feet lift and 30 feet horizontal run.

• Leak in piping system • Locate and repair the leak.

• cooling unit not leveled

properly

• Adjust the leveling feet of the cooling unit.

• Damaged piping insulation • Identify damaged area and repair the insulation.

Water valve not

responsive

• Actuator not connected

properly

• Verify that the actuator is connected properly.

• Actuator and shaft not

rotating together

• Tighten the linkage screw on the actuator shaft.

• Rotary switch on the bottom

of the actuator is set

incorrectly

• Confirm that the rotary switch is pointing toward

the front of the cooling unit.

Display interface

not operational but

cooling unit

operates

• Display interface not

connected properly

• Verify that the display interface cable is connected

properly.

Problem Possible Cause Corrective Action

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APC ACRC301S Guía de usuario Pagina 50

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