Related Manuals for schroff 60714-050
Summary of Contents for schroff 60714-050
- Page 1 VARISTAR LHX 20 User’s Manual Product Number: 60714-050 Revision: R2.1, May 10, 2012 Doc-No: 60130-531...
- Page 2 November 11, 2008 Initial release R2.1 May 10, 2012 Table 1 Requirements for water quality updated Impressum: Schroff GmbH D-75334 Straubenhardt, Germany The details in this manual have been carefully compiled and checked - supported by certified Quality Management System to EN ISO 9001/2000 The company cannot accept any liability for errors or misprints....
-
Page 3: Table Of Contents
VARISTAR LHX 20 Cooling module 60714-050 Table of Contents Safety Information .................... 1 Intended Use ....................... 1 Manufacturer's Safety Information ............... 1 1.2.1 Liability Disclaimer ................. 1 1.2.2 Safety symbols used in this manual............1 Safety Information for the Operator ..............2 Additional literature .................... - Page 4 VARISTAR LHX 20 Cooling module 60714-050 Maintenance and Repair ................21 Inspection and Maintenance Intervals ............... 21 Error messages ....................22 Fitting/removing the cooling module ..............23 7.3.1 Decommissioning the cooling module ..........23 7.3.2 Fitting and removing the cooling module ..........24 7.3.3...
-
Page 5: Safety Information
1 Safety Information 1.1 Intended Use The 60714-050 cooling module described in this manual is a component of a Schroff VARISTAR LHX 20 cabinet. The VARISTAR LHX 20 cabinet forms a closed system and allows the cooling of electronic components mounted in its 19"... -
Page 6: Safety Information For The Operator
VARISTAR LHX 20 Safety Information Cooling module 60714-050 1.3 Safety Information for the Operator Commissioning, maintenance and operation of the system may only be carried out by suitably trained technical personnel. The nationally applicable health and safety regulations must also be adhered to. -
Page 7: Device Description
Cooling module 60714-050 2 Device description The 60714-050 cooling module is a component of a Schroff VARISTAR LHX 20 cabinet. The module is a plug-in unit that may be fitted to the left or right in the cabinet according to the customer's wishes. -
Page 8: Overview Of Cooling Module
VARISTAR LHX 20 Device description Cooling module 60714-050 2.1 Overview of Cooling Module Figure 1: Overview of Cooling Module Fans Condensation vessel Display and control unit Control valve with servo actuator Control system AC adaptor Mains input IEC320-C14 Cooling water inlet and return and... -
Page 9: How The Cooling System Works
VARISTAR LHX 20 Device description Cooling module 60714-050 2.2 How the cooling system works The cooling system consists of an air loop and a water loop. The fans of the cooling unit draw warm air from the rear section of the cabinet and into an air/water heat exchanger. -
Page 10: Air Loop
Note: The control valve is in fact a three-way valve that functions as a straight- way valve since the bypass has been factory sealed. If required, the cover seal can be removed by Schroff Service to provide three-way functionality. www.schroff.biz... -
Page 11: Regulation
100% and the fans are driven at 100% nominal speed. The control characteristic has been factory preset but can be altered and adapted by Schroff Service or one of its licensed service partners. 2.6 Alarms The control electronics can detect various faults (e.g. a broken sensor cable or a temperature that exceeds set limit values), save them in an alarm memory and signal the fault on the display or via potential-free contacts. -
Page 12: Operating The Cooling Module
VARISTAR LHX 20 Operating the cooling module Cooling module 60714-050 3 Operating the cooling module 3.1 Control and display unit The combined control and display unit allows various settings and adjustments to be made. In normal operation the display shows the current air exit temperature from the module (F1/F2 averaged). -
Page 13: Setting The Air Exit Temperature
3 Release the SET button to accept the new set value. The user cannot make any other adjustments than the air exit temperature. Modifications to the parameterisation or control behaviour of the alarm outputs can be carried out only by Schroff service personnel or authorised Schroff service partners. www.schroff.biz... -
Page 14: Storage And Transport
VARISTAR LHX 20 Storage and transport Cooling module 60714-050 4 Storage and transport Danger of tipping over! The asymmetrical positioning of the cooling module poses a risk of the cabinet tipping over. The VARISTAR LHX 20 must always be adequately secured during transport. -
Page 15: Commissioning
ServicePLUS The setting up, commissioning, completion, maintenance and repair of VARISTAR cabinets may also be carried out within Schroff's service program. Please ask about our after-sales services. You can obtain further information about our ServicePLUS options online at: www.schroff.biz/ServicePlus 5.2 Initial Commissioning... -
Page 16: Connect To The Cooling Water Source
The circulator pump can thus be operated with constant pressure and variable water flow. For cooling systems in which the three-way functionality is required, the two-way valve can be suitably modified by Schroff service personnel. www.schroff.biz R2.1, May 10, 2012... -
Page 17: Requirements For Water Quality
VARISTAR LHX 20 Commissioning Cooling module 60714-050 5.3.1 Requirements for water quality Attention! For problem-free operation of the cooling module, the following water quality requirements must be satisfied: (see also VDI 3803) Table 1: Requirements for water quality Electrical conductivity: 25 mS/m - 220 mS/m at 25 °C... -
Page 18: Water Connections At The Cooling Module
VARISTAR LHX 20 Commissioning Cooling module 60714-050 5.3.2 Water connections at the cooling module The water connections are situated to the front of the cooling module. The pipes are fed through the base of the cabinet. Please consult the drawing provided in the Appendix of this manual for the nominal pipe diameters and position of the connections in the cabinet. -
Page 19: Connecting To The Electricity Supply
If the cooling unit is to be used exclusively in telecommunications environments (redundant -48 V power supply), please contact Schroff Service for further information. Mains supply to the 230 V version is via a IEC320-C14 connector with cable strain relief, situated on the bottom of the cooling module. -
Page 20: Bleeding Air From The Cooling System
At temperatures below 18 °C and without power the valve is closed and bleed- ing cannot take place. For safety reasons Schroff recommends that during bleeding operations the power supply be isolated and the control valve opened by operating the actuator manually. -
Page 21: Steps For Bleeding
VARISTAR LHX 20 Commissioning Cooling module 60714-050 5.5.1 Steps for bleeding 1 Open the rear of the cabinet. 2 Remove cover plate from the lower part of the cooling module. 3 Using a 3 mm hexagonal key, adjust the actuator manually to position 1 (A).... -
Page 22: Test Operation
The user cannot make any other adjustments than the air exhaust tempera- ture.Modifications to the parameterisation or control behaviour of the alarm outputs can be carried out only by Schroff service personnel or authorised Schroff service partners. www.schroff.biz R2.1, May 10, 2012... -
Page 23: Interfaces
VARISTAR LHX 20 Interfaces Cooling module 60714-050 6 Interfaces Situated beside the control and display unit are a D-sub 25 socket, a D-sub 9 connector and a RJ45 socket. Additional interfaces are provided on the control board and can only be accessed by removing the front cover of the cooling module. -
Page 24: Inputs And Outputs On The Control Board
6.3 Pinout of D-sub 9 socket RS-232 interface, interface driver galvanically isolated. Status reports are issued at this interface. Schroff LHX Ethernet gateway can be connected here. Error codes and temperatures/speeds can be accessed via Ethernet using SNMP. Signal 6.4 RJ45 socket pinout Two RJ45 sockets are provided on the control board. -
Page 25: Maintenance And Repair
ServicePLUS Where a maintenance contract has been agreed, all maintenance shall be carried out exclusively by Schroff Service. Please ask about our after-sales services. You can obtain further information about our ServicePLUS options online at: www.schroff.biz/ServicePlus 7.1 Inspection and Maintenance Intervals... -
Page 26: Error Messages
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.2 Error messages Message Cause Action at control unit Remedy / Cause Sensor error sensor 1 (air outlet 1) not required Inspect sensor (break or short circuit on sensor F1) Sensor error sensor 2 (air outlet 2) -
Page 27: Fitting/Removing The Cooling Module
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.3 Fitting/removing the cooling module Attention! Under no circumstances should the cooling module be stored and transported in contact with water. After removal the module should be laid on its side so that any remaining cooling water can drain from the heat exchanger. -
Page 28: Fitting And Removing The Cooling Module
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.3.2 Fitting and removing the cooling module Attention! On account of the size and weight of the cooling module (80 kg), do not attempt to move it unaided. 1 Open the rear of the cabinet and unscrew the bolts (see arrows) on the angle brackets. -
Page 29: Flushing The Cooling Module With Antifreeze
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.3.3 Flushing the cooling module with antifreeze Attention! If the cooling module is to be left on its side, all water connections must first be sealed to prevent any leakage of water that could damage the control electronics. -
Page 30: Component Replacement
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.4 Component replacement 7.4.1 Removing and fitting fans Attention! Fans can be replaced while the system is in operation. Please be aware during removal, and particularly during fitting, of the mass moment of inertia of the rotating fan. -
Page 31: Removing And Fitting The Fan Unit
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.4.2 Removing and fitting the fan unit Attention! The fan unit must only be removed when the system is switched off. To remove the unit switch off the cooling module or isolate the mains supply. -
Page 32: Cleaning / Replacing The Droplet Separator
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.4.3 Cleaning / replacing the droplet separator Removing and fitting the droplet separator 1 Remove fan unit. 2 Loosen bolts (see arrows) on the securing plate at the top of the droplet separator until the plate is loose. -
Page 33: Replacing The Electric Control Valve Actuator
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.4.4 Replacing the electric control valve actuator Attention! Before replacing the control valve actuator the cooling module must be isolated from the mains voltage. Switching off with the standby button is not sufficient, since the actuator remains live and may be damaged during removal or fitting. -
Page 34: Replacing The Control And Display Unit
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.4.5 Replacing the control and display unit Figure 7: Control and display unit Removing and fitting the display unit 1 Unscrew bolts (see arrows) and pull the control and display unit out of the module. -
Page 35: Replacing The Temperature Sensors
VARISTAR LHX 20 Maintenance and Repair Cooling module 60714-050 7.4.6 Replacing the temperature sensors Hazardous voltage! Under certain circumstances during commissioning, completion, maintenance and service it is necessary to open the enclosure. Some exposed parts may be under live voltage. These works must therefore only be carried out by specially trained technical personnel. -
Page 36: Replacing Other Components
Provision has not been made for the replacing of other components on site. If it is not possible to bring the cooling module into operation with the steps covered in this chapter, the entire module should be removed and returned to Schroff. ServicePLUS ... -
Page 37: Service
8 Service 8.1 Service and Returns ServicePLUS Where servicing is required, contact your Schroff dealer or Schroff directly. Where a maintenance contract has been agreed, all maintenance shall be carried out exclusively by Schroff Service. Please ask about our after-sales services. -
Page 38: Declaration Of Conformity
Air/water heat exchanger Type / designation Varistar LHX 20 Order No. , -018 60714-050, 10130-012, -013, -014, -016, -017 Supply voltage 230 VAC 50/60 Hz, 48 VDC has been developed, designed and manufactured in conformity with the above- named EC Guidelines by:... -
Page 39: Accessories
VARISTAR LHX 20 Service Cooling module 60714-050 8.4 Accessories Description Article Number Ethernet gateway 60130-440 AC mains switch box 23207-115 Water connection kit 60714-065 External display 60714-069 8.5 Spare parts Description Article Number Complete cooling module, 20 kW, 230 VAC... -
Page 40: Technical Data
VARISTAR LHX 20 Technical data Cooling module 60714-050 9 Technical data Table 2: Technical data Cabinet dimensions Width Depth 800-1200 Height 2100/2300 Ingress protection Cooling module dimensions Width Depth Height 1849 General Data Ambient temperature during transport (min./max.) °C -25 / 70 Ambient temperature outside cabinet during operation (min./max.) -
Page 41: Appendix
VARISTAR LHX 20 Appendix Cooling module 60714-050 10 Appendix 10.1 Cooling capacity www.schroff.biz R2.1, May 10, 2012... -
Page 42: Connectors/Interfaces On The Control Board
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.2 Connectors/interfaces on the control board www.schroff.biz R2.1, May 10, 2012... -
Page 43: Ac Power Supply Diagram
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.3 AC power supply diagram www.schroff.biz R2.1, May 10, 2012... -
Page 44: Temperature Sensor Connections
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.4 Temperature sensor connections www.schroff.biz R2.1, May 10, 2012... -
Page 45: Fan And Control Valve Connections
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.5 Fan and control valve connections www.schroff.biz R2.1, May 10, 2012... -
Page 46: Display Connection; Connectors On The Control Board
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.6 Display connection; connectors on the control board www.schroff.biz R2.1, May 10, 2012... -
Page 47: Dimensions
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.7 Dimensions www.schroff.biz R2.1, May 10, 2012... -
Page 48: Lhx 20 Base Plate
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.8 LHX 20 base plate View of base plate from above A = front; B = rear www.schroff.biz R2.1, May 10, 2012... -
Page 49: Example Installation
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.9 Example installation Control valve, Pressure regulator; adjust to system pressure volume flow 0-100% Circulation pump, differential pressure Emergency mains water feed controlled. Discharge 0-100%, discharge head adjustable Cooling water system supply... -
Page 50: Piping And Instrumentation Diagram
VARISTAR LHX 20 Appendix Cooling module 60714-050 10.10 Piping and instrumentation diagram Bypass is sealed sealed by default. www.schroff.biz R2.1, May 10, 2012... - Page 52 SCHROFF GMBH www.schroff.biz Langenalberstr. 96-100 Tel.: + 49 (0) 7082 794-0 Fax: +49 (0) 7082 794-200 D-75334 Straubenhardt...
Need help?
Do you have a question about the 60714-050 and is the answer not in the manual?
Questions and answers