HP Performance Optimized Data Center (POD) 20cp manual Replacing the humidistat

Page 36

b.Use a flathead screwdriver to the press the release button (1), and then pull the front panel from the bottom to detach the panel (2). The two parts remain connected by a flat cable.

4.Squeeze the two terminal cover fins to remove the cables from the terminal block.

5.Remove the screws securing the mounting base to the wall.

Replacing the humidistat

1.Detach the front panel of the replacement humidistat from the mounting base.

a. Remove the screw securing the tab in the opening (1), and then slide the tab to the open position (2).

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Contents Abstract Page Contents Contacting HP Illustrated parts catalog Structural component identificationLife safety component identification Component DescriptionElectrical power component identification Front view shown Component DescriptionAccessed only by authorized personnel Electrical safety label Description Control cabinet component identificationHP POD 20c racks Aisle clearancesCold aisle clearance Replaceable components for China models Hot aisle clearanceSpare part number Description Installation considerations Optional Fire suppression system OverviewRemoval and replacement procedures ButtonsEPO button Removing the EPO buttonDIN rail components Control relay moduleRemoving the control relay module Differential pressure sensor Replacing the control relay moduleRemoving the differential pressure sensor Replacing the differential pressure sensorDoor position devices Magnetic contactsRemoving the magnetic contacts Replacing the magnetic contactsElectrical Busway drop boxRemoving the busway drop box Removal and replacement procedures Replacing the busway drop box Fans IT cooling fanRemoving the IT cooling fan Ventilation fan Replacing the IT cooling fanRemoving the Rittal SK 3326 ventilation fan Replacing the Rittal SK 3326 ventilation fanFilters Heat exchanger air filtersRemoving the heat exchanger air filter Replacing the heat exchanger air filterVesda filter Removing the Vesda filterRittal SK 3326 ventilation fan filter Replacing the Vesda filterRemoving the Rittal SK 3326 ventilation fan filter Replacing the Rittal SK 3326 ventilation fan filterIndicators ECS touchscreen and EPO indicatorsRemoving the ECS EPO LED indicators Replacing the ECS EPO LED indicatorsLights LED lightRemoving the LED light Replacing the LED lightSensors Heat exchanger condensate drain pan sensorsRemoving the drain pan sensor Chilled water supply and return header drain pan sensors Replacing the drain pan sensorHumidistat Removing the humidistatReplacing the humidistat Humidity sensor Removing the humidity sensor Replacing the humidity sensorChilled water system temperature sensor Removing temperature sensor from the chilled water systemChilled water temperature sensor internal components Replacing the temperature sensor in the chilled water systemReplace the chilled water temperature sensor circuit board Removal and replacement procedures Temperature sensor cold aisle Removing the cold aisle temperature sensorReplacing the cold aisle temperature sensor Temperature sensors hot aisle Removing the hot aisle temperature sensorReplacing the hot aisle temperature sensor Fluid system componentsChilled water supply and return header pressure sensors You need a wrench to remove and replace the pressure sensors Chilled water flow sensor Removing the chilled water flow sensorReplacing the chilled water flow sensor Chilled water system temperature sensor Chilled water temperature sensor internal components Replace the chilled water temperature sensor circuit board Heat exchanger Humidifier Removing the humidifierRemoval and replacement procedures Replacing the humidifier Removal and replacement procedures Humidistat if installed Replacing the humidistat Valves External chilled water isolation valveRemoving the external chilled water isolation valve External pressure gauge isolation valve Replacing the external chilled water isolation valveRemoving the external pressure gauge isolation valve Replacing the external pressure gauge isolation valve Periodic maintenance Periodic maintenance overviewQualified personnel Cooling systemLeak detection Leak isolationHumidifier if installed ECS POD Shut Down Required Fire alarm and suppression system HP POD 20c structureLife safety EPO Functional TestAccess control Third-party componentsSpecifications General HP POD 20c specificationsElectrical specifications Rack specifications Environmental specificationsWater specifications Thermal and air flow performanceOptional features specifications Contacting HP Before you contact HPHP contact information Safety and NEC compliance Regulatory informationHP POD 20c regulatory compliance Regulatory requirements for Exit signs With Council, Inc Regulatory information Glossary Branch circuitSOW Documentation feedback Index HP POD 20c structure Temperature sensors, cold aisle
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