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Removal and replacement procedures 21

Removing the differential pressure sensor

Label the pressure sensor tube connection locations, and then remove the tubes from the differential
pressure sensor.

Label the sensor wire connection locations, loosen the screws securing the sensor wires, and then
remove the sensor wires.

Remove the two nuts (1) and two bolts (2) securing the differential pressure sensor, and then remove the

differential pressure sensor.

Replacing the differential pressure sensor

Replace the differential pressure sensor, and then secure the differential pressure sensor with two bolts
(1) and two nuts (2).

Insert the pressure sensor tubes into the differential pressure sensor according to the connection
locations you labeled during the removal procedure.

Replace the sensor wires according to the connection locations you labeled during the removal

procedure, and then secure the sensor wires by tightening the screws.

Содержание Performance Optimized Datacenter 40c North America

Страница 1: ...acenter 40c North America Maintenance and Service Guide Abstract This guide provides maintenance and service guidance for the HP Performance Optimized Datacenter 40c NA HP POD 40c NA Part Number 756850 001 December 2013 Edition 1 ...

Страница 2: ...ithout notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein ...

Страница 3: ...way drop box 18 Replacing the busway drop box 19 Differential pressure sensor 20 Removing the differential pressure sensor 21 Replacing the differential pressure sensor 21 Door position contact 22 Removing the door position contact 22 Replacing the door position contact 22 Drain pan sensor 23 Removing the drain pan sensor 23 Replacing the drain pan sensor 24 ECS touchscreen 26 Removing the ECS tou...

Страница 4: ...y sensor 50 Removing the humidity sensor 50 Replacing the humidity sensor 52 LED light 53 Removing the LED light 53 Replacing the LED light 54 Temperature sensor cold aisle 54 Removing the cold aisle temperature sensor 55 Replacing the cold aisle temperature sensor 56 Temperature sensor hot aisle 57 Removing the hot aisle temperature sensor 57 Replacing the hot aisle temperature sensor 59 VESDA fi...

Страница 5: ...atures specifications 72 Contacting HP 73 Before you contact HP 73 HP contact information 73 Regulatory information 74 Safety and regulatory compliance 74 Turkey RoHS material content declaration 74 Ukraine RoHS material content declaration 74 Warranty information 74 Glossary 75 Documentation feedback 77 Index 78 ...

Страница 6: ...ccess to the overhead heat exchangers 2 Personnel access doors Provides access to the POD 3 Facility chilled water return Facilitates the return of chilled water to the POD 4 Facility chilled water supply Facilitates the supply of chilled water to the POD Parts and part number identification Review the contents of the HP POD 40c NA to identify the following for each component Model number The mode...

Страница 7: ...inside the cold aisle of the HP POD 40c NA as shown in the following figure Life safety component identification Internal life safety components Top view shown Item Component Description 1 Exit sign locations Indicates the location of an exit 2 Fire strobe light Indicates a fire alarm condition within the HP POD 40c NA 3 EPO button Disconnects the HP POD 40c NA from main power feeds ...

Страница 8: ...ch personnel door This is an optional component that might not be included Exit sign locations Top view shown External emergency status indicators The HP POD 40c NA has one external fire strobe light that indicates a fire alarm condition Top view shown Electrical power component identification WARNING To avoid the risk of personal injury or loss of life all personnel must comply with PPE requireme...

Страница 9: ...cation box Customer communication connection point ECS Security Phone 3 415 240V 3 phase wye 4 wire 800 A electrical panel A feed power for critical IT loads electrical busways and house power 4 415 240V 3 phase wye 4 wire 800 A electrical panel B feed power for critical IT loads electrical busways and house power The demarcation box and the fire box are communication data points that are provided...

Страница 10: ...rized personnel 2 Disconnect label Provides the order for disconnecting all of the electrical panels 3 Caution Cautions users about isolating power from the HP POD 40c NA 4 Arc flash warning Provides a reminder to users of the danger of arc flash and required PPE Internal panel labels Front view shown Item Electrical safety label Description 1 Input power Lists the input power information ...

Страница 11: ...it 2 VESDA power supply with battery backup Provides power to the VESDA and backup power to the VESDA during a utility power loss 3 Fire alarm and suppression release control panel Controls all fire systems in the HP POD 40c NA including the smoke detection system fire suppression system and fire pulls Includes a battery backup system that provides backup power to the fire system during a utility ...

Страница 12: ...ponent Description 1 Heat exchangers Use facility chilled water to cool the air in the HP POD 40c NA 2 Heat exchanger fan banks Operate at variable speeds to maintain the preprogrammed differential pressure setpoint and the hot aisle temperature setpoint 3 Chilled water supply Supplies facility chilled water to cool the HP POD 40c NA 4 Chilled water return Returns heated chilled water to the facil...

Страница 13: ... distance The maximum rack face to cold aisle wall distance is 39 5 inches In the figure X represents any protrusion into the cold aisle starting from the rack face of the installed IT component for example the bezel Y represents cold aisle clearance The cold aisle clearance dictates the maximum depth D of any installed IT component To find the maximum cold aisle clearance calculate 100 33 cm 39 5...

Страница 14: ... of 2 54 cm 16 in must be considered when selecting IT infrastructure that will populate into the hot aisle Replaceable components Each HP POD 40c NA is unique and the specific replaceable components vary for each POD For specific replaceable component information see the Operations and Maintenance Manual for the HP Performance Optimized Datacenter 40c North America ...

Страница 15: ...ts WARNING To avoid the risk of personal injury or loss of life all personnel must comply with PPE requirements when opening or working inside areas of the HP POD 40c NA that are marked as hazardous voltage per NFPA 70E in accordance with NEC NA and IEC EMEA and APJ WARNING To avoid the risk of personal injury hearing protection must be worn at all times when working inside the HP POD 40c NA WARNI...

Страница 16: ...ncluding specific local requirements for initial and periodic inspections Arranging for and receiving all required local permits including initial commissioning as well as standard and repair maintenance Arranging for the connection of the agent tanks refilling of tanks and all system testing including pressure tests All general maintenance of the suppression system must be completed by an authori...

Страница 17: ...hannels to remove the filter Replacing the air filter 1 Angle the filter to position the top corners in the frame channels and then push the filter up to the top of the frame 2 Press in the bottom corners of the filter until the locking tabs engage and the filter clicks into place ...

Страница 18: ...sure redundancy You need a socket wrench for installation IMPORTANT HP recommends that you shut down the associated IT equipment and de energize the appropriate section of the power busway before attempting to remove or replace a busway drop box The corresponding branch circuit breaker is labeled on the busway Removing the busway drop box 1 Turn the power off by opening both breakers on the busway...

Страница 19: ...sway drop box The drop box weighs approximately 9 kg 20 lb 1 Place the silver drop box bracket on the electrical busway where you want to replace the busway drop box 1 2 Note the required rotation indicated on the drop box insert the drop box into the drop box bracket on the electrical busway and then rotate the drop box 90 until it locks into place 2 CAUTION To prevent damage to the drop box and ...

Страница 20: ...by using a socket wrench to insert and tighten a bolt 4 5 Connect the PDUs to the busway drop box 1 6 Turn the power on by closing both breakers on the busway drop box 2 Differential pressure sensor The differential pressure sensors are located in the cold aisle You need a screwdriver for installation ...

Страница 21: ...ng the differential pressure sensor and then remove the differential pressure sensor Replacing the differential pressure sensor 1 Replace the differential pressure sensor and then secure the differential pressure sensor with two bolts 1 and two nuts 2 2 Insert the pressure sensor tubes into the differential pressure sensor according to the connection locations you labeled during the removal proced...

Страница 22: ...upper magnet 1 2 Cut the tie wrap 2 and loosen the nut on the HP POD 40c NA structure that secures the wire 3 Pull the wire all the way through to the point of entry or ECS panel 3 Replacing the door position contact 1 Feed the wire all the way through from the point of entry or ECS panel 1 2 Tighten the nut on the HP POD 40c NA structure that secures the wire and then replace the tie wrap 2 3 Sec...

Страница 23: ...r installation Removing the drain pan sensor 1 If you are removing a heat exchanger drain pan sensor do the following a Inspect the area by removing the center bottom fan from the center fan bank in the associated zone For more information see Removing the fan b To gain additional working space you might need to remove a fan bank in the associated zone For more information see Removing the fan ban...

Страница 24: ...Removal and replacement procedures 24 Heat exchanger drain pan sensor or Header drain pan sensor Replacing the drain pan sensor 1 Position the sensor in the drain pan Heat exchanger drain pan sensor or ...

Страница 25: ...o the appropriate port on the satellite box terminal Heat exchanger drain pan sensor or Header drain pan sensor 4 If you are replacing a heat exchanger drain pan sensor do the following a Replace the fan bank you removed if applicable For more information see Replacing the fan bank b Replace the fan you removed if applicable For more information see Replacing the fan ...

Страница 26: ...e of the HP POD 40c NA You need a screwdriver for installation Removing the ECS touchscreen 1 Disconnect the cables attached to the back of the ECS touchscreen 2 Remove the eight screws on the back of the door that secure the ECS touchscreen 1 and then push the ESC touchscreen through the front of the door to remove the ECS touchscreen 2 ...

Страница 27: ...through the front of the door 1 and then secure the ECS touchscreen to the back of the door with eight screws 2 2 Connect the cables to the back of the ECS touchscreen EPO button There are two EPO buttons one by each personnel access door in the HP POD 40c NA You need a screwdriver for installation ...

Страница 28: ...lacement procedures 28 Removing the EPO button 1 Remove the two screws securing the tamper cover 1 and then remove the tamper cover 2 2 Remove the four screws securing the EPO button 1 and then remove the EPO button 2 ...

Страница 29: ...nt procedures 29 Replacing the EPO button 1 Replace the EPO button 1 and then replace the four screws that secure the EPO button 2 2 Replace the tamper cover 1 and then replace the two screws that secure the tamper cover 2 ...

Страница 30: ... 1 2 6 7 red 1 3 yellow 1 5 and green 4 EPO LED indicators Tools are not required for installation Removing the EPO LED indicator 1 On the back of the ECS cabinet door push the gray tab on the EPO LED indicator module down to release the module 1 and then pull the module out of the door 2 ...

Страница 31: ...Removal and replacement procedures 31 2 Unscrew the EPO LED indicator bulb Replacing the EPO LED indicator 1 Screw the new EPO LED indicator bulb into the module ...

Страница 32: ... technically at temperature monitoring devices when the hot aisle temperature reaches 60ºC 140ºF the thermister switch closes When both thermister switches are closed the EPO system initiates an emergency shutdown You need scissors for installation Removing the EPO thermister 1 Cut the tie wraps securing the thermister 1 2 Pull the thermister down to remove the thermister 2 Replacing the EPO therm...

Страница 33: ...ow actuator The external chilled water flow actuator is located on top of the HP POD 40c NA You need a wrench for installation Removing the external chilled water flow actuator 1 Open and danger tag the associated circuit breaker in the ECS cabinet The circuit breakers are identified on the panel schedule ...

Страница 34: ...ement procedures 34 2 Remove the four bolts securing the face plate 1 and then remove the face plate 2 3 Disconnect the power to the actuator 4 Remove the four bolts securing the actuator 1 and then remove the actuator 2 ...

Страница 35: ...r bolts 2 2 Connect the power to the actuator 3 Replace the actuator face plate 1 and then secure the face plate with four bolts 2 4 Close the associated circuit breaker in the ECS cabinet External chilled water flow valve The external chilled water flow valve is the butterfly valve located on top of the HP POD 40c NA You need a wrench for installation ...

Страница 36: ...ght bolts surrounding the valve 1 and then remove the valve 2 Replacing the external chilled water flow valve 1 Replace the valve 1 and then secure the valve with eight bolts 2 2 Replace the external chilled water flow actuator For detailed instructions see Replacing the external chilled water flow actuator on page 35 External pressure gauge isolation valve The external pressure gauge isolation va...

Страница 37: ... wrench for installation Removing the external pressure gauge isolation valve Loosen the connection securing the valve 1 and then remove the valve 2 Replacing the external pressure gauge isolation valve Insert the new valve 1 and then tighten the connection 2 Fan There are 18 fans per cooling zone ...

Страница 38: ...power assembly before removing or replacing a fan or fan bank You need a screwdriver for installation Removing the fan 1 Take manual control of the fan speed in the affected zone from the ECS panel 2 Set the fan speed to zero 3 Unseat both power supplies from the fan power assembly ...

Страница 39: ... pulling it straight out 2 5 Disconnect the wire 6 Remove the fan from the assembly Replacing the fan 1 Connect the wire 2 Insert the fan into the assembly and push until the fan is fully seated 1 3 Secure the fan with three screws 2 4 Connect the power supplies to the fan power assembly 5 Return the fan bank to the AUTO mode of operation ...

Страница 40: ...e removing or replacing a fan or fan bank You need a screwdriver for installation Removing the fan bank 1 Take manual control of the fan speed in the affected zone from the ECS panel 2 Set the fan speed to zero 3 Unseat both power supplies from the fan power assembly 4 Remove the fan bank wire harness 1 5 Remove the six screws that secure the fan bank 2 ...

Страница 41: ... by pulling it straight out 3 Replacing the fan bank 1 Insert the fan bank 1 2 Secure the fan bank with six screws 2 3 Replace the fan bank wire harness 3 4 Connect the power supplies to the fan power assembly 5 Return the fan bank to the AUTO mode of operation ...

Страница 42: ...ernal fire alarm strobe light at the standard personnel entry door You need a screwdriver for installation Removing the fire strobe light 1 Remove the four screw cover plates 1 2 Remove the four screws securing the components 2 and then disconnect the wiring 3 Remove the electric sounder with strobe the semi flush plate and the standard back box 3 ...

Страница 43: ...d back box the semi flush plate and the electric sounder with strobe 1 and then attach the wiring 2 Secure the components with four screws 2 3 Attach the four screw cover plates 3 Humidifier The humidifier is located in the cold aisle humidifier bump out You need a screwdriver for installation ...

Страница 44: ...c NA exterior 4 Disconnect the water supply line to the humidifier on the HP POD 40c NA exterior to relieve the water pressure 5 Open and danger tag the associated circuit breaker in the ECS cabinet The circuit breakers are identified on the panel schedule 6 Remove the four screws on the corners of the humidifier cover 1 and then remove the cover 2 7 Locate the power board and disconnect the two i...

Страница 45: ...and replacement procedures 45 10 Disconnect and remove the external electrical wiring from the housing 3 11 Remove the four screws that secure the humidifier body to the wall 1 and then remove the humidifier 2 ...

Страница 46: ...difier 1 and then secure the humidifier to the wall with four screws 2 2 Connect the drain 1 3 Connect the humidifier to the water supply line 2 4 Route and connect the external electrical wiring to the housing 3 5 Locate the power board and connect the two internal electrical wires ...

Страница 47: ...ifier on the HP POD 40c NA exterior 9 Close the associated circuit breaker in the ECS cabinet 10 Press the power button on the outside of the humidifier to power up the humidifier Humidistat The humidistat is located in the cold aisle humidifier bump out You need a screwdriver and a flathead screwdriver for installation Removing the humidistat 1 Press the power button on the outside of the humidif...

Страница 48: ...opening 1 and then slide the tab to the open position 2 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...

Страница 49: ...e mounting base to the wall using the screws provided 3 Squeeze the two terminal cover fins to remove the terminal covers 4 Make the required connections by running the connection cables through the center hole in the bottom of the mounting base and connecting the cables to the terminal block 5 Separate the connection and control cables from the relay cables 6 Attach the front panel 7 Close the as...

Страница 50: ...sor The HP POD 40c NA contains two humidity sensors one in cooling zone 2 and one in cooling zone 5 You need a screwdriver for installation Removing the humidity sensor 1 Remove the four screws that secure the sensor cover 1 and then remove the cover 2 ...

Страница 51: ...res 51 2 Loosen the sensor wires by turning the nut counter clockwise 1 remove the sensor wires from the terminal block and then remove the sensor wires 3 3 Remove the two screws that secure the sensor 1 and then remove the sensor 2 ...

Страница 52: ...2 Replacing the humidity sensor 1 Replace the sensor 1 and then secure the sensor with two screws 2 2 Insert the sensor wire into the nut 1 secure the wire by turning the nut clockwise 2 and then insert the wire into the terminal block 3 ...

Страница 53: ...cover 1 and then secure the cover with four screws 2 LED light Each POD contains eight LED lights You need adhesive tape for installation Removing the LED light You need a screwdriver for installation 1 Disconnect power from the LED light 2 Remove the screws 1 ...

Страница 54: ...cing the LED light 1 Place the LED light where you want to secure it 1 2 Insert the screws 2 3 Reconnect power to the LED light Temperature sensor cold aisle The HP POD 40c NA contains six temperature sensors in the cold aisle You need a screwdriver and scissors for installation ...

Страница 55: ...e the sensor cover 1 and then remove the cover 2 2 Cut the two red wires inside the sensor box 3 For each of the five clamps securing the sensor tube to the HP POD 40c NA structure remove the screw that secures the clamp 1 rotate the clamp 2 and then pull the clamp out to remove the clamp 3 4 Remove the sensor tube ...

Страница 56: ...place the sensor tube and then secure the tube with five clamps For each clamp replace the clamp 1 and then secure the clamp with a screw 2 2 Splice the two sensor tube wires with the red wires inside the sensor box 3 Replace the sensor cover 1 and then secure the cover with two screws 2 ...

Страница 57: ...NA contains six temperature sensors in the hot aisle You need a screwdriver for installation Removing the hot aisle temperature sensor 1 Remove the four screws that secure the sensor cover 1 and then remove the cover 2 2 Loosen the sensor wires by turning the nut counter clockwise 1 ...

Страница 58: ...Removal and replacement procedures 58 3 Loosen the screw securing the wires 2 and then remove the sensor wires 3 4 Remove the two screws that secure the sensor 1 and then remove the sensor 2 ...

Страница 59: ...res 59 Replacing the hot aisle temperature sensor 1 Replace the sensor 1 and then secure the sensor with two screws 2 2 Insert the sensor wires into the screw 1 and tighten the screw 2 3 Secure the wire by turning the nut clockwise 3 ...

Страница 60: ...filter sensor notifies you through the ECS when a filter must be changed HP recommends that you periodically inspect and change each VESDA filter A VESDA filter can be replaced during normal HP POD 40c NA operation You need a screwdriver for installation Removing the VESDA filter 1 Remove the filter cover on the front of the VESDA unit ...

Страница 61: ...61 2 Remove the 10mm screw that secures the VESDA filter 1 and then remove the filter 2 Replacing the VESDA filter 1 Insert the new VESDA filter 1 and then replace the 10mm screw that secures the filter 2 2 Replace the VESDA filter cover ...

Страница 62: ...k Frequency Capable Party Air filters Inspect and replace as necessary Quarterly or as needed Qualified personnel Air filter differential pressure sensor Inspect and test replace as necessary Annually Qualified personnel Cooling system leak check Verify there is no visible chilled water leak from Heat exchanger Cold water supply piping Cold water return piping If a leak is detected see Leak detect...

Страница 63: ...here is great risk of electrical shock when water is used near electricity CAUTION If a serious leak develops shut down the POD immediately and isolate the chilled water cooling system from the site Contact HP immediately to initiate a field service call Do not attempt to repair the chilled water cooling system Attempting to self repair the chilled water cooling system during the warranty or servi...

Страница 64: ...Drains are in working order There is an air gap at the funnel drain entry into the site system Drain discharge is not getting water on external equipment or grounding system Quarterly Qualified personnel Put the humidifier in system flush mode and inspect drain flow and water supply flow Inspect clean and or replace as necessary Quarterly Qualified personnel Inspect for any internal or external wa...

Страница 65: ... the following Main house and critical IT power feeds Electrical panels breakers and disconnects Busway end feeds busway sections and drop box locking mechanism bolt Annually Licensed electrician Grounding Grounding system residence test using the DUCTOR method Every 2 years Licensed electrician POD SHUT DOWN REQUIRED Ground and grounding connection lug located internal to each electrical panel to...

Страница 66: ...ncies trouble shoot and replace as necessary Annually Qualified personnel Lighting Visual inspection of lighting fixtures and lamps Replace components upon failure As needed or Quarterly Licensed electrician Qualified personnel Fire alarm and suppression system Component to be inspected Task Frequency Capable Party Full system functional check Inspect and perform a functional check of the system A...

Страница 67: ...el Inspect the door operation and inspect the door gaskets for water and air leaks Annually Qualified personnel Visually inspect the paint Perform prep and touch up as necessary Annually Qualified personnel Life safety Component to be inspected Task Frequency Capable Party Manual EPO shunt trip EPO FUNCTIONAL TEST POD will power down Manually initiate EPO with the internal and external push button...

Страница 68: ...personnel Emergency egress Personnel door emergency egress panic bars Visual and operational inspection Every 2 years Qualified personnel Access control Component to be inspected Task Frequency Capable Party System functional test Visual inspection and operational test of door access contact switches Annually Qualified personnel Visual inspection and operational test of the following Door access c...

Страница 69: ...act purchased separately Generators Switchgear For maintenance activities for all third party equipment purchased as part of and delivered with the HP POD 40c NA see the Operations and Maintenance Manual for the HP Performance Optimized Datacenter 40c NA This manual might not cover equipment purchased through Critical Facilities Services ...

Страница 70: ...s per HP POD 40c NA 40 two per rack Maximum power per PDU 30A 17 kW 60A 34 kW Network supported Bulk cable pass through fiber Bulk cable pass through copper Optional External rated demarcation box 1 The Empty weight includes the HP POD 40c NA structure empty racks PDUs and drop boxes It does not include IT equipment All weights are estimates and can vary for your POD 2 Maximum power depends on the...

Страница 71: ...0 flanges Rack specifications Standard HP POD 40c NA racks AT978A Feature Specification U height 50U Width 54 6 cm 21 5 in Depth 99 cm 39 in Maximum load weight 1 360 7 kg 3 000 lb This specification indicates the maximum clearance for the cold aisle Equipment cannot exceed this measurement Thermal and air flow performance Maximum thermal and air flow performance parameters HP POD 40c NA specifica...

Страница 72: ...ating altitude 76 2 m to 9 144 m 250 ft to 30 000 ft For non operating specifications consider the temperature of computer and IT equipment inside the HP POD 40c NA Optional features specifications Feature Specification Fire suppression 3M Novec 1230 fire extinguishing system provided in two canisters main and reserve Card reader 12 key pad with 125 KHz proximity and 13 56 MHz contactless smart ca...

Страница 73: ... registration number if applicable Product serial number Product model name and number Product identification number Applicable error messages Add on boards or hardware Third party hardware or software Operating system type and revision level HP contact information For United States and worldwide contact information see the Contact HP website http www hp com go assistance In the United States To c...

Страница 74: ...p www hp com support Safety Compliance EnterpriseProducts Turkey RoHS material content declaration Ukraine RoHS material content declaration Warranty information HP ProLiant and X86 Servers and Options http www hp com support ProLiantServers Warranties HP Enterprise Servers http www hp com support EnterpriseServers Warranties HP Storage Products http www hp com support Storage Warranties HP Networ...

Страница 75: ...of an enclosure that covers an opening ECS environmental control system EPO emergency power off equipment A general term including fittings devices appliances luminaries apparatus machinery and the like used as a part of or in connection with a modular data center Source NEC fuse branch circuit type A fuse of Class CC G H J K L R and T These fuses are able to provide branch circuit protection IEC ...

Страница 76: ...on unit PLC programmable logic controller PPE personal protective equipment RU rack units structure Enclosure of sufficient size to enable entry of personnel UPS uninterruptible power system VESDA very early smoke detection apparatus ...

Страница 77: ...oviding documentation that meets your needs To help us improve the documentation send any errors suggestions or comments to Documentation Feedback mailto docsfeedback hp com Include the document title and part number version number or the URL when submitting your feedback ...

Страница 78: ...on 77 documentation feedback 77 door contact removing 22 door contact replacing 22 door contacts 22 downloading files 73 drain pan sensor removing 23 drain pan sensor replacing 24 drain pan sensors 23 drop box removing 18 drop boxes 18 E ECS components 64 ECS touchscreen 26 ECS touchscreen removing 26 ECS touchscreen replacing 26 electrical 65 electrical component identification 8 electrical speci...

Страница 79: ...emoving 36 pressure gauge isolation valve replacing 37 pressure sensor removing 21 pressure sensor replacing 21 R rack specifications 71 regulatory compliance identification numbers 74 regulatory compliance notices 74 removal and replacement procedures 15 replacement procedures 15 required tools 15 S safety considerations 15 74 safety information 15 74 series number 74 spare part numbers 6 specifi...

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