Emerson Liebert CW Bedienungsanleitung Seite 7
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IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions that should be followed during the installation
and maintenance of the Liebert CW
™
. Read this manual thoroughly before attempting to install or
operate this unit.
Only properly trained and qualified personnel should move, install or service this equipment.
Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in
this manual. Follow all operating and user instructions.
!
WARNING
Arc flash and electric shock hazard. Disconnect all electric power supplies and wear protective
equipment per NFPA 70E before working within electric control enclosure. Failure to comply
can cause serious injury or death.
Customer must provide earth ground to unit, per NEC, CEC and local codes, as applicable.
Before proceeding with installation, read all instructions, verify that all the parts are included
and check the nameplate to be sure the voltage matches available utility power.
The Liebert iCOM microprocessor does not isolate power from the unit, even in the Unit Off
mode. Some internal components require and receive power even during the Unit Off mode of
Liebert iCOM control.
The line side of the disconnect switch on the front of the unit contains live high-voltage.
The only way to ensure that there is NO voltage inside the unit is to install and open a remote
disconnect switch. Refer to unit electrical schematic.
Follow all local codes.
!
WARNING
Risk of high-speed moving parts. Can cause injury or death.
Disconnect all local and remote electric power supplies before working in the unit.
Do not operate this unit with any or all cabinet panels removed.
Do not operate upflow units without installing a plenum, ductwork or guard over the blower
opening(s) on the top surface of the unit cabinet.
Ductwork must be connected to the blower(s), or a plenum must be installed on the blower
deck for protection from rotating blower wheel(s) on upflow units.
!
WARNING
Risk of top-heavy unit falling over. Can cause equipment damage, injury or death.
Read all of the following instructions before attempting to move the unit, lift it, remove
packaging or prepare the unit for installation.
!
CAUTION
Risk of contact with hot surfaces. Can cause injury.
The humidifiers and reheats are extremely hot during unit operation. Allow sufficient time for
them to cool before working within the unit cabinet. Use extreme caution and wear protective
gloves and arm protection when working on or near hot discharge lines, humidifiers and
reheats.
!
CAUTION
Risk of sharp edges, splinters and exposed fasteners. Can cause injury.
Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,
shoes and glasses should attempt to move the unit, lift it, remove packaging or prepare the
unit for installation.
- Precision Cooling 1
- 2
- TABLE OF CONTENTS 3
- SAVE THESE INSTRUCTIONS 7
- 1.0 LIEBERT CW NOMENCLATURE 9
- 026 D C S A 2 1234 A 9
- 2.0 INSTALLATION GUIDELINES 10
- Installation Guidelines 11
- 2.5 Operating Conditions 12
- 2.6 Location Considerations 12
- MODELS WITH PRE-FILTERS 13
- UNIT DIMENSIONAL DATA 13
- DPN001659 13
- DPN001660 14
- CW114 with EC fans 15
- MODELS WITH REAR RETURN 18
- DPN001676 19
- DPN001677 20
- SAFETY INFORMATION 30
- 4.2 Unpacking the Unit 31
- 4.2.3 Removing Piano Jacks 33
- AN—LOWERING AND REMOVING 36
- Section B-B 37
- 5.2 Removing the EC Fans 38
- 6.0 ELECTRICAL CONNECTIONS 40
- Electrical Connections 41
- DPN001671 42
- CW146 and CW181 50
- 7.0 PIPING 51
- INCORRECT 52
- INCORRECTINCORRECT 52
- Condensate Pump 53
- 7.2 Chilled Water Piping 54
- IPING SCHEMATICS 56
- Hot Water Reheat Coil 58
- DPN001628 62
- Piping Schematics 64
- UNIT FIELD PIPING LOCATIONS 66
- 9.2 Electrical 67
- 9.3 Piping 67
- 9.4 Other 67
- NITIAL STARTUP PROCEDURE 68
- 11.1 System Testing 69
- 11.2 Filters 70
- 11.4 Blower Package—EC Fans 71
- 11.5 Humidifier 72
- Correct Switch Orientation 73
- Incorrect Switch Orientation 73
- Infrared Bulbs 74
- Controls 75
- Replacing the Canister 76
- Circuit Board Adjustments 78
- 11.7.1 Condensate Drain 80
- 11.7.2 Condensate Pump 80
- 12.0 TROUBLESHOOTING 81
- AINTENANCE CHECKLIST 84
- Drain Piping 85
- Electrical Panel 85
- HVAC Maintenance Checklist 86
- For More Information: 88
- (866) 787-3271 88
- [email protected] 88
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