Table of Contents
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Table of Contents
Troubleshooting
Related Manuals for Vertiv Liebert CRV4 Series
Summary of Contents for Vertiv Liebert CRV4 Series
- Page 1 Liebert® CRV4 Series Precision Air Conditioning User Manual...
- Page 2 Homepage: www.vertiv.com E-mail: support@Vertiv.com Customer service hotline: 4008876510 Asia Pacific Homepage: www.vertiv.com. E-mail: overseas.support@Vertiv.com Australia Customer service hotline: 1300367686 New-Zealand Customer service hotline: 0800100877 For Technical Support, users may contact the nearest Vertiv Co. local sales office or service centre.
- Page 3 Please read this manual carefully before installing, maintaining, and troubleshooting. Vertiv™ Liebert® CRV4 series precision CRAC is a professional device, only professionals are permitted to access the unit and is kept in a place where access is restricted to common people.
- Page 4 Safety Precautions and Measures The important safety precautions and measures that should be followed during the installation and maintenance are described in the following sections. Read the manual prior to installation and operation of the unit. Only qualified personnel should move, install, or service this equipment.
- Page 5 Therefore, care should be taken to ensure that the unit is not located directly above any equipment that could sustain damage due to water and excessive moisture. Use of a leak detection system for the unit and system supply lines are recommended by Vertiv Co.
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Page 6: Table Of Contents
1.5.4. Monitoring Card ......................................5 1.5.5. Dual Power Module ....................................5 Chapter 2: Installation........................................6 2.1. Equipment Room Consideration .................................6 2.2. Installation Space Requirements ................................7 2.2.1. Maintenance Space Requirements for Liebert CRV4 ....................7 2.3. Environmental Requirements ..................................8 Vertiv | Liebert® CRV4 | User Manual... - Page 7 3.3.4. Connection of the Copper Piping between the Indoor and Outdoor Units ........27 3.3.5. Installing Long Piping Kit (for site installation) ......................30 3.3.6. Check Valve Installation ..................................31 3.3.7. Installing the Solenoid Valve ................................31 3.4. Charging Refrigerant and Adding Lubricant Oil ........................33 Vertiv | Liebert® CRV4 | User Manual...
- Page 8 Long Piping Kit- (Optional for site installation) ....................45 4.2.11. Teamwork Control ....................................45 4.3. Electrical Installation Checklist ................................46 Chapter 5: Start-up Commissioning ................................47 5.1. Location Of MCBs ........................................47 5.2. Power-On Commissioning ...................................48 5.2.1. Preparation Before Commissioning ............................48 5.2.2. Commissioning Procedures ................................48 Vertiv | Liebert® CRV4 | User Manual...
- Page 9 7.3. Graphic Color Screen ......................................70 7.4. Control Buttons ........................................71 7.4.1. Function Description ....................................71 7.4.2. Operational Examples ..................................72 7.5. Control Screen ..........................................73 7.5.1. Startup Screen ......................................73 7.5.2. Main Screen ......................................... 73 7.5.3. Password Interface ....................................74 Vertiv | Liebert® CRV4 | User Manual...
- Page 10 8.6. Fan Kit Maintenance ......................................90 8.7. General Maintenance for the Electrode Humidifier ......................92 8.7.1. Operating Guidelines for the Electrode Humidifier ....................92 8.7.2. Replacing Humidifier ....................................93 8.8. Electrical Heater Maintenance ................................95 8.9. Refrigerating System Maintenance ..............................96 Vertiv | Liebert® CRV4 | User Manual...
- Page 11 Appendix III: Alarm Menu Control Table ..............................110 Appendix IV: Routine Maintenance Inspection Items (Monthly) ..............................................111 Appendix V: Routine Maintenance Inspection Items (Semi-annually) ..........................................112 Appendix VI: Table Names and Content of Harmful Substances in Products ......................................114 Vertiv | Liebert® CRV4 | User Manual...
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Page 12: Chapter 1: Introduction
Liebert CRV4 series of air conditioner. 1.1. Product Introduction The Liebert CRV4 series is the next generation series of air conditioners that provide precise environmental control. Liebert CRV4 air conditioners are products that are specifically created and designed for the small to medium data centers, computer rooms, and similar ecosystems which require a high degree of accuracy and precision. - Page 13 Electrical Heating Std. 1 Stage Digit 24 Order Identifier CRV4 Digit 14 Filtration Digit 25 Order Identifier Industry Code G4+Filter Clog Switch Telecom Code The standard components are represented in ‘Bold Italic’ font in Table 1-1. Vertiv | Liebert® CRV4 | User Manual...
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Page 14: Product Appearance
1.4.2. Evaporator Liebert CRV4 series is equipped with a 7 mm copper tube finned evaporator with high heat dissipation efficiency. This evaporator facilitated with a ‘distributor’, which is designed to ensure even distribution of refrigerant in each loop of the evaporator. -
Page 15: Electronic Expansion Valve (Eev)
The Liebert CRV4 air-cooled air conditioner adopts the modbus communication protocol (Modbus protocol); through the configured RS485 port. The Liebert CRV4 air conditioner can communicate with the host computer and receives the control instructions of the host software. Vertiv | Liebert® CRV4 | User Manual... -
Page 16: Options
If the CR025 unit is equipped with top piping connection arrangement, then dual power module option is not available in the unit; for more details contact Vertiv representative. Vertiv | Liebert® CRV4 | User Manual... -
Page 17: Chapter 2: Installation
5% of the total indoor airflow. • To avoid any outside air infiltration into the room, all the doors and windows should be properly closed. Do not use the indoor unit for outdoor environment. Vertiv | Liebert® CRV4 | User Manual... -
Page 18: Installation Space Requirements
Front 23.6” 23.6” 23.6” Rear 23.6” 23.6” 23.6” The space is used for regular maintenance, such as replacing filter, fan, electrode humidifier and so on. In case of special application Contact Vertiv representative. Vertiv | Liebert® CRV4 | User Manual... -
Page 19: Environmental Requirements
Total transportation and storage time should not exceed six months, otherwise Storage time the performance of the system needs to be re-calibrated. Please contact Vertiv representative when operating in the following conditions • The voltage of the air conditioning unit is beyond the range of the operating voltage. -
Page 20: Refrigerant Charging Requirement
• Do not use sub-standard quality inferior refrigerant as it may cause an extensive damage to the system. Vertiv does not undertake any responsibility for all the related consequences that result from using a low quality inferior refrigerant. 2.5. Transportation, Unpacking and Inspection 2.5.1. -
Page 21: Unpacking
For better understanding see Figure 2-4. No. Description Description Remove the side wooden panels Unscrew the unit from the pallet Remove the top wooden panels Figure 2-4 Unpacking the Outer Package Vertiv | Liebert® CRV4 | User Manual... -
Page 22: Inspection
• Check that the fittings are complete and the components are intact against the packing list. Ensure that everything is in its designated position. • If any parts or components are missing or damaged, immediately report to the local offices of the carrier and Vertiv representative at the earliest. Vertiv | Liebert® CRV4 | User Manual... -
Page 23: Chapter 3: Mechanical Installation
3.1. System Arrangement during Installation 3.1.1. General Arrangement The system arrangement diagram of the refrigeration system for Liebert CRV4 air-cooled AC unit is shown in Figure 3-1. Vertiv | Liebert® CRV4 | User Manual... - Page 24 Schrader valve Electronic Expansion Valve (EEV) Ball valve Schrader valve Check valve+ Evaporator coil Condenser coil Suction temperature sensor Solenoid valve+ Low pressure sensor Ball valve Schrader valve Figure 3-1 Air-cooled System Arrangement Diagram Vertiv | Liebert® CRV4 | User Manual...
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Page 25: System Installation Mode
• : Field piping (by technical personnel) • Components (marked with *) are not supplied by Vertiv and are recommended for proper circuit operation & maintenance. • Additional components (marked with +) are required when the equivalent length exceeds 30 m. - Page 26 • The top end of the inverted backbend must be installed higher than the ultimate level of the copper piping of the outdoor unit. However, if the outdoor unit is installed lower then the compressor no modification is required. Vertiv | Liebert® CRV4 | User Manual...
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Page 27: Mechanical Parameters
(Including anchor bolts) CR025HA1N80S02E30000PV041 300×1200×2200 11.8"x47.2"x86.6" (Excluding anchor bolts) CR035RA1N8S712E30000PV040 600×1100×2000 23.6"x43.3"x78.7" (Including anchor bolts) CR035HA1N80S02E30000PV041 600×1200×2200 23.6"x47.2"x86.6" (Excluding anchor bolts) CR045RA1N8S712E30000PV040 600×1100×2000 23.6"x43.3"x78.7" (Including anchor bolts) CR045HA1N80S02E30000PV041 600×1200×2200 23.6"x47.2"x86.6" (Excluding anchor bolts) Vertiv | Liebert® CRV4 | User Manual... -
Page 28: Base Plate Piping Location And Dimensions
Weight-drain water hole Water inlet hole of wet film humidifier Water inlet hole of electrode humidifier Water inlet hole of electrode humidifier Figure 3-5 Location of the Piping Connection on the Base Plate Vertiv | Liebert® CRV4 | User Manual... -
Page 29: Top Plate Piping Locations & Dimensions
Drain water hole of pump Liquid inlet hole of evaporator Liquid inlet hole o evaporator Water inlet hole of humidifier Exhaust air hole of compressor Figure 3-6 Location of the Piping Connection on the Top Plate Vertiv | Liebert® CRV4 | User Manual... -
Page 30: Location Of Front Air Outlets
Figure 3-7 Locations of Front Air Outlets (unit: mm) To prevent damage of the power cables due to wear and tear, the cable entry holes are fitted with bushes for smoother routing of the cabling. Vertiv | Liebert® CRV4 | User Manual... -
Page 31: Installation Of The Indoor Unit
3. Tighten the fixing nuts on the leveling feet by rotating them counter-clockwise to complete the level adjustment. If there is a provision for mounting bracket in the equipment room, then the leveling feet must be removed and the Liebert CRV4 unit should be fixed on the mounting bracket. Vertiv | Liebert® CRV4 | User Manual... -
Page 32: Removing The Leveling Feet And Fastening
No. Description Description Top front fixing hole Bottom front fixing hole Top rear fixing hole Bottom rear fixing hole Figure 3-9 Fixing Holes of the Cabinet Vertiv | Liebert® CRV4 | User Manual... -
Page 33: Assembly Of The Cabinet Parts
3. Use the M5 countersunk head screws to fix the cabinet connectors (L-shaped) in the installation holes of the cabinet frame (side of the hinge) and rack frame adjacent to the cabinet as shown in Figure 3-11. Vertiv | Liebert® CRV4 | User Manual... -
Page 34: Unit Piping Installation
• The selection, layout, and fixing of the piping should comply to the industry standards and norms. • Vacuum pumping, refrigerant charging operations and procedures must comply to the industry standards. • Pressure drop, compressor oil return, noise, and vibration must be considered during the designing and installation process. Vertiv | Liebert® CRV4 | User Manual... -
Page 35: Removing Filter Net
3. This prevents the backflow of the water in the connecting pipes to the water pan. User can use a clamp from the accessories box to fix the drain pipe to the drain connector, and the fixing torque is 15 kg.cm, refer Figure 3-13 for better understanding. Vertiv | Liebert® CRV4 | User Manual... - Page 36 Drain water hole of pump Liquid inlet hole of evaporator Bottom cable inlet of pump Water inlet hole of wet film humidifier Drain water hole of pump Figure 3-13 Connection of the Drain Piping Vertiv | Liebert® CRV4 | User Manual...
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Page 37: Electrode Humidifier Water Inlet Piping Connection
100 kPa to 700 kPa. If the pressure exceeds 700 kPa, then there should be an arrangement of pressure reducer. If the pressure falls below 100 kPa, a water tank and pump system should be fitted. Vertiv | Liebert® CRV4 | User Manual... -
Page 38: Connection Of The Copper Piping Between The Indoor And Outdoor Units
Mechanical Installation In some cases, the process needs to be in compliance with the local laws and regulations resulting in the installation of some other supporting components, for more details consult Vertiv representative. No. Description Humidifier inlet hole Figure 3-15 Electrode Humidifier Water Inlet Pipe Connection from Bottom 3.3.4. - Page 39 • D: Discharge line; L: Liquid Line • If the pipe length exceeds 50 m or drops over 30 m, consult Vertiv representative for details. • If the outdoor environment temperature is lower than -20 °C, a low-temperature kit is needed, consult Vertiv representative for details.
- Page 40 The exposure time of system piping must not exceed 15min. Longer exposure will lead to the compressor lubricant oil being affected by moisture, which can affect the life of the key components and the system operation stability. Vertiv | Liebert® CRV4 | User Manual...
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Page 41: Installing Long Piping Kit (For Site Installation)
3-3. Prior to installation, consult Vertiv representative whether to use the long piping kit and for the equivalent length of the recommended pipe (consider the resistance loss calculation at the bends). The equivalent length of each kit is shown in... -
Page 42: Check Valve Installation
After brazing, install the coil and remove the cover of the cabling terminals. Direct the cable through the cable hole in the cover and plug the two terminals and reinstall the cover. Figure 3-20 shows the process of connecting the cables of the solenoid valve in a liquid pipe Vertiv | Liebert® CRV4 | User Manual... - Page 43 Finally, mount the coil on the valve body and press the coil tightly to ensure complete contact between the coil and valve body is firmly done for better understanding refer Figure 3-21. Figure 3-21 Assembly of the Coil and Solenoid Valve Vertiv | Liebert® CRV4 | User Manual...
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Page 44: Charging Refrigerant And Adding Lubricant Oil
Table 3-5, Table 3-6 Table 3-7 are the standard refrigerant charge for outdoor (Vertiv™ Liebert® LSF/ Vertiv™ Liebert® LVC) and indoor units respectively. Table 3-5 Refrigerant Charging Amount of the Liebert LSF Outdoor Unit (unit: kg) Outdoor Unit Model LSF38... -
Page 45: Adding Lubricant Oil
• CR025 and CR045 units use POE type (32-3MAF) lubricant oil, and CR035 units use PVE type (FVC68D) lubricant oil • Do not use inferior quality refrigerant. • For any consequences resulting from inferior quality refrigerant, Vertiv does not assume warranty responsibility. • Select the type of lubricant oil in accordance with the compressor manufacturer’s specification. -
Page 46: Removing Transportation Fastener And Vibration Absorber
If the copper pipe gets close to the metal plate, it may result in wear and tear of the copper pipe. To prevent this from occurring, vibration absorbers are fitted between them. However, these objects need to be removed and then the area must be cleaned prior to installing and commissioning. Vertiv | Liebert® CRV4 | User Manual... - Page 47 Figure 3-23 shows the location of the mounting screws of a single piece of the supply air baffle. No. Description Screw of M5x12 Figure 3-23 Fixed Mode of the Supply Air Baffle Vertiv | Liebert® CRV4 | User Manual...
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Page 48: Sealing The Holes Of The Top Plate Of The Cabinet
Use the provided four M13.5 rubber plug to seal the holes holes Use the provided four M12x30 bolt to seal the holes Use the provided four M12x30 bolt to seal the holes Figure 3-24 Sealing the Top Holes of the Cabinet Vertiv | Liebert® CRV4 | User Manual... -
Page 49: Checklist For Completed Mechanical Installation
Irrelevant things (such as transportation material, structure material, and tools), inside or around the unit have been cleared after the unit is installed. After all the particulars are checked and confirmed, perform the electrical installation operation. Vertiv | Liebert® CRV4 | User Manual... -
Page 50: Chapter 4: Electrical Installation
• Liebert CRV4 series is a range of sophisticated devices used in industrial, commercial, or other professional occasions. It is not tailored for the general public. The total rating power is larger than 1 kW and is in accordance with the IEC61000-3-12 standards. -
Page 51: Liebert Crv4 Cable Connection Of Indoor Unit
4.2.1. Electrical Port Location of the Indoor Unit For any model in the Liebert CRV4 series, open the rear panel of the indoor unit following which the specific layout and locations of the low voltage components can be viewed as shown in Figure 4-1. -
Page 52: Connecting The Power Cable Of The Indoor Unit
Bottom cable inlet holes Figure 4-2 Top and Bottom Cable Entry Holes The cable sizes must strictly meet and adhere to the local cabling regulations and protocols as it supersedes every type of connection. Vertiv | Liebert® CRV4 | User Manual... -
Page 53: Connecting The Control Cables
The location of the terminal block for on-site cable connections is shown in Figure 4-1. The enlarge view of the terminals are shown in Figure 4-3. Figure 4-3 The Enlarged View of the Terminals Vertiv | Liebert® CRV4 | User Manual... -
Page 54: Water-Under-Floor Sensor
The standard location of the sensor is 1.5 m height from the base of the unit. Therefore, the sensors should be placed in positions as shown in Figure 4-4, or the devices cannot operate appropriately. Vertiv | Liebert® CRV4 | User Manual... - Page 55 Rack temperature sensor IRM-S02TH address settings are given in the Table 4-3. Table 4-3 IRM-S02TH Address Setting Sensor Rack temperature 1 Rack temperature 2 ON — “1”; Rack temperature 3 OFF — “0” Rack temperature 4 Rack temperature 5 Rack temperature 6 Vertiv | Liebert® CRV4 | User Manual...
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Page 56: Remote Shutdown
Circuit Diagram in the Appendix 1 section. 4.2.11. Teamwork Control If user need to use the teamwork control function, user should connect the communication cables to terminals 61# & 62# on the TB2 terminal block. Vertiv | Liebert® CRV4 | User Manual... -
Page 57: Electrical Installation Checklist
Control transformer setting matches the incoming power. After confirming the above particulars, user can start the commissioning of the unit. Do not power on the unit until Vertiv authorized technical personnel has checked and confirmed all the parameters of electrical installation in the unit are correct. -
Page 58: Chapter 5: Start-Up Commissioning
5-1, the MCBs of different units should be differentiated according to the labels indicated on the terminals. No. Description Description Compressor MCB Fan MCB Electrical heater MCB Humidifier MCB Transformer MCB Figure 5-1 MCBs Location Vertiv | Liebert® CRV4 | User Manual... -
Page 59: Power-On Commissioning
If there is a hydraulic solenoid valve in the system, user needs to choose vacuum in manual mode, and then vacuum after opening the solenoid valve. Vertiv | Liebert® CRV4 | User Manual... - Page 60 30min so as to evaporate any liquid refrigerant. For CR035 model, it is prohibited to charge the refrigerant from the schrader valve of air suction pipe of the compressor, otherwise, any damage caused by following wrong operation procedure, Vertiv does not assume warranty responsibility.
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Page 61: Inspection After Commissioning
Start-up Commissioning 5.3. Inspection After Commissioning Once the commissioning is completed, the Vertiv engineers will confirm the same using the checklist in Table 5-1. Table 5-1 After Commissioning Inspection Checklist Particulars Confirmation Check all outputs are functional. Check that the temperature & humidity settings as well as the control precisions are configured correctly within range. -
Page 62: Chapter 6: Micro-Controller (Color Screen)
9. It can store up to 1000 historical alarm records. 6.2. Appearance The unit has a 7-inch HMI color display and its appearance is shown in Figure 6-1 Vertiv | Liebert® CRV4 | User Manual... -
Page 63: Control Screen
/ humidity values (default is air supply temperature) in current mode; the humidity value means the air supply humidity. For the two triangles on the edge of perimeter, the left Vertiv | Liebert® CRV4 | User Manual... - Page 64 Unlock button Operating status On/ Off button Toggle button 1 Time display Control mode Graph button Status display Setting button Real-time data User button Toggle button 2 Figure 6-2 Color Display Screen - Unlock Vertiv | Liebert® CRV4 | User Manual...
- Page 65 Status display Displays the current state of the unit. Sensor reading list Displays the current operating status of each sensor and its respective components. Alarm list Displays all the current alarms. Vertiv | Liebert® CRV4 | User Manual...
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Page 66: Main Interface Control Mode
150° degrees in the polar coordinate. Theoretical air supply humidity value. The current control mode of compressor is air supply humidity control by default, showing “supply”. means humidity. means temperature. Vertiv | Liebert® CRV4 | User Manual... -
Page 67: Password Interface
Power-On, status is within the normal range 6.3.3. Password Interface Press on the unlock icon in the upper right corner of the display, the password interface is displayed, as shown Figure 6-5. Figure 6-5 Password Interface Vertiv | Liebert® CRV4 | User Manual... -
Page 68: Menu Structure
The Main Menu screen is accessible by entering an confirming the correct password credentials, as shown in Figure 6-6. For more information on Main Menus, refer to the Appendix 2 Display Menu Structure Diagram. Figure 6-6 Main Menu Vertiv | Liebert® CRV4 | User Manual... -
Page 69: Run Information
Figure 6-7 of temperature/ humidity information. Press the scroll bar to the extreme right to navigate information to the far right. Vertiv | Liebert® CRV4 | User Manual... - Page 70 Micro-Controller (Color Screen) Figure 6-7 Temperature Humidity Information • Switch status The Switch status menu displays the switch status of each electrical component, as shown in Figure 6-8. Figure 6-8 Switch Status Information Vertiv | Liebert® CRV4 | User Manual...
- Page 71 The Power Information menu displays the three-phase voltage and frequency, as shown in Figure 6-9. Figure 6-9 Power Information • Teamwork Information The Teamwork Information menu displays the status of the group information, as shown in Figure 6-10. Figure 6-10 Teamwork Information Vertiv | Liebert® CRV4 | User Manual...
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Page 72: Alarm Information
• The latest Alarm SN is the least number. Press the Up or Down button to scroll through the status records if more than one alarm is activated. • They will be cleared upon system Power-Off. Vertiv | Liebert® CRV4 | User Manual... -
Page 73: Temperature And Humidity
• Temp Setting The Temp Setting menu interface is shown in Figure 6-13. The user can set the supply air temperature, return air temperature, remote air temperature, and temperature difference under this menu. Vertiv | Liebert® CRV4 | User Manual... - Page 74 Micro-Controller (Color Screen) Figure 6-13 Temp Setting • Hum Setting The Hum Setting menu interface is shown in Figure 6-14. The user can set the humidity setting value under this menu. Figure 6-14 Hum Setting Vertiv | Liebert® CRV4 | User Manual...
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Page 75: Parameter Setting
, teamwork setting, time setting, display setting and password setting. • Alarm Setpoint The Alarm Setpoint menu interface is shown in Figure 6-15. Figure 6-15 Alarm Setpoint • Alarms Attribute The Alarms Attribute menu interface is shown in Figure 6-16. Vertiv | Liebert® CRV4 | User Manual... - Page 76 • Communication Setting The Communication setting menu interface is shown in Figure 6-17, communication setting screen, the system parameters can be set to monitoring protocol, monitor baudrate and monitor address. Figure 6-17 Communication Setting Vertiv | Liebert® CRV4 | User Manual...
- Page 77 • Teamwork Setting The Teamwork Setting menu interface is shown in Figure 6-18. Figure 6-18 Teamwork Setting • Time Setting The Time Setting menu interface is shown in Figure 6-19. Figure 6-19 Time Setting Vertiv | Liebert® CRV4 | User Manual...
- Page 78 • Display Setting The Display Setting menu interface is shown in Figure 6-20. Figure 6-20 Display Setting • Password Setting The Password Setting menu interface is shown in Figure 6-21. Figure 6-21 Password Setting Vertiv | Liebert® CRV4 | User Manual...
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Page 79: Graph
0 to 48 Hours. Figure 6-22 Graph 6.5.4. About The About menu is used to query the software model and version number, as shown in Figure 6-23. Figure 6-23 About Vertiv | Liebert® CRV4 | User Manual... -
Page 80: Chapter 7: Micro-Controller (Text-Screen)
7. It can store up to 1000 historical alarm records. 8. Configure the RS485 interface, using MODBUS-RTU communication protocol. 7.2. Appearance The micro-processing controller panel is shown in Figure 7-1. Vertiv | Liebert® CRV4 | User Manual... -
Page 81: Graphic Color Screen
More detailed information such as the operating status of a component and temperature/humidity can be obtained from the main menu. When browsing the menu, the current menu item is highlighted; when the setting is modified, the current modification bit is highlighted. Vertiv | Liebert® CRV4 | User Manual... -
Page 82: Control Buttons
For a multi-screen menu: scroll up the screen. Move the cursor down or decrease the parameter value. For a toggle selection: scroll Down button through the options. For a multi-screen menu: scroll down the screen. Vertiv | Liebert® CRV4 | User Manual... -
Page 83: Operational Examples
10. Press the Esc button to return to the previous menu screen. If user do not press the Enter button to validate the changed parameter after the changing the parameter, the change of Hi Sup Temp is invalid. Vertiv | Liebert® CRV4 | User Manual... -
Page 84: Control Screen
• Icons The icons on the main screen indicate the unit output status, unit properties, and unit operating status. The icons and their definitions are described in Table 7-2. Figure 7-5 Main Screen Vertiv | Liebert® CRV4 | User Manual... -
Page 85: Password Interface
Press the Enter button on the Main screen and the Password screen will appear as shown in Figure 7-6. Figure 7-6 Password Interface Screen Three levels of passwords are provided for accessing the menus. The detailed descriptions are listed in Table 7-3. Vertiv | Liebert® CRV4 | User Manual... -
Page 86: Menu Structure
Micro-processing controller. On selecting a menu item, that item will be highlighted. Figure 7-7 shows the Main Menu screens: Figure 7-7 Main Menu Screens The users can change most of the parameters setting; however, there are some parameters that cannot be modified or altered. Vertiv | Liebert® CRV4 | User Manual... -
Page 87: Run Information
In the run information menu, select TEMP / Hum Info to enter the interface as shown in Figure 7-9. Press the up or down button to scroll up or down to display the options in the menu. Vertiv | Liebert® CRV4 | User Manual... - Page 88 Micro-Controller (Text-screen) Figure 7-9 Temperature/ Humidity Information Screens • ESP Information In the run information menu, select ESP Info to enter the interface as shown in Figure 7-10. Figure 7-10 ESP Information Screen Vertiv | Liebert® CRV4 | User Manual...
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Page 89: Alarm Information
Figure 7-12 Teamwork Information Screen 7.6.3. Alarm Information In the main menu interface, select Alarm Info to enter the interface as shown in Figure 7-13, user can view the active alarm and history alarm information. Vertiv | Liebert® CRV4 | User Manual... - Page 90 Figure 7-15. Among them, XX is the current history alarm number; YY refers to the total number of history alarm records that currently occurs. Vertiv | Liebert® CRV4 | User Manual...
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Page 91: Temperature & Humidity Settings
Figure 7-16 Temperature & Humidity Set Screens 7.6.5. Parameter Settings Select Para Set in the main menu to enter the interface as shown in Figure 7-17. The parameters in the system settings are permanently saved. Vertiv | Liebert® CRV4 | User Manual... -
Page 92: Alarm Set
Figure 7-18 System Set Interface Screens 7.6.6. Alarm Set The Alarm Set menu interface screens are shown in Figure 7-19. Figure 7-19 Alarm Set Screens Vertiv | Liebert® CRV4 | User Manual... -
Page 93: Humidifier Set
Figure 7-20 Humidifier Set Screen 7.6.8. Teamwork Set The Teamwork Set menu interface is shown in Figure 7-21. Figure 7-21 Teamwork Set Screens 7.6.9. ESP Set The ESP Set menu interface is shown in Figure 7-22. Vertiv | Liebert® CRV4 | User Manual... -
Page 94: Display Set
7.6.10. Display Set The Display Set menu interface is shown in Figure 7-23. Figure 7-23 Display Set Screen 7.6.11. Password Set The Password Set menu interface is shown in Figure 7-24. Figure 7-24 Password Screen Vertiv | Liebert® CRV4 | User Manual... -
Page 95: Help
Micro-Controller (Text-screen) 7.6.12. Help The Help menu is used to view the software version, as shown in Figure 7-25. Figure 7-25 Help Screen Vertiv | Liebert® CRV4 | User Manual... -
Page 96: Chapter 8: System Operation And Maintenance
For the diagnosis and treatment of complex fault please contact Vertiv representative. Prior to operation and maintenance, the lethal voltage may be present in the unit which can be fatal. All notes, warnings, and cautions marked on the unit as well as the ones mentioned in the manual must be considered, otherwise, it may lead to injury and fatality. -
Page 97: Routine Maintenance And Inspection (Semi-Annually)
Check the voltage regulating function of the rotation speed controller The temperature switch is set at the required position The refrigerant piping are properly supported Check and fasten the circuit connections Check the suction pressure Vertiv | Liebert® CRV4 | User Manual... -
Page 98: Self-Diagnosing Functions
5. Fasten all the electrical connection terminals. 6. Check that the sockets and plugs are in good conditions. Replace the contactors, if required. 7. If the power cables are damaged, get them replaced by a qualified/ certified electrician. Vertiv | Liebert® CRV4 | User Manual... -
Page 99: Maintenance Of Control System
The detector should be located away from any water pool or drainage discharge on the floor, 2 m to 2.5 m away from the unit. Do not place it directly under the machine. Figure 8-1 shows the recommended location for the water-leak-detector: Vertiv | Liebert® CRV4 | User Manual... - Page 100 • Ensure that the power supply of the control unit has been disconnected before connecting any mechanical parts or cables. • Do not use the water-leak-detector in the vicinity of flammable liquids; do not use it to detect any flammable liquids. Vertiv | Liebert® CRV4 | User Manual...
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Page 101: Air Filter Maintenance
5. The above steps can be reversed to install the replaced fan. During installation, pay attention to the corresponding hot plug terminals and firm contact in the installation process. Figure 8-2 shows the illustration of the replacement procedure for better understanding. Vertiv | Liebert® CRV4 | User Manual... - Page 102 Therefore, do not touch the board when the unit is powered On. • While the unit is powered On, do not strictly touch the fan mesh enclosure as it may end up damaging caused by the fan operation. Vertiv | Liebert® CRV4 | User Manual...
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Page 103: General Maintenance For The Electrode Humidifier
On/ Off operation mode, and controls the humidification operation based on the programmed procedure. The humidification control board is located in a metal box close to the humidifier and its interfaces are shown in Figure 8-4. Vertiv | Liebert® CRV4 | User Manual... -
Page 104: Replacing Humidifier
1. Turn Off the humidifier by setting the humidity setpoints on the controller lower than the actual humidity in the equipment room. 2. Place the RUN/ DRAIN switch to the DRAIN position to forcefully empty the humidifier. 3. Turn Off the AC power. Vertiv | Liebert® CRV4 | User Manual... - Page 105 3. Connect the power supply cable correctly. The cable fastening nut is tightened with the torque of 2 N.m to 3 N.m. 4. Restore the humidity setpoints to the original setting. Figure 8-5 Humidifier Tray Vertiv | Liebert® CRV4 | User Manual...
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Page 106: Electrical Heater Maintenance
• If the line is not connected, it is necessary to remove the electrical heater to further check whether the fuse is disconnected, whether the thermostat is damaged and whether the PTC electrical heater is damaged. • If user needs to change the electrical heater, contact the maintenance personnel and Vertiv representative for support details. Description... -
Page 107: Refrigerating System Maintenance
If the amount of refrigerant supplied to the evaporator is too small, the air suction superheat will be high; if too much amount of refrigerant is supplied to the evaporator, the air suction superheat will be low. Vertiv | Liebert® CRV4 | User Manual... -
Page 108: Air-Cooled Condenser
• The customer is not advised to adjust the Electronic Expansion Valve (EEV) on their own. If there is a need to adjust, please contact Vertiv representative. 8.9.4. Air-cooled Condenser When the outdoor unit airflow is blocked, clean the condenser with compressed air or a fin cleaning agent (weakly alkaline) to remove dust and debris that hinder the airflow. - Page 109 If the valve is faulty, replace it too. Before the replacement, user must clean the system. If unsure about the cleaning method, please consult Vertiv representative for the support. Following are the procedures to replace the compressor: 1.
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Page 110: Drainage System Maintenance
1. Inspect the water tray periodically for ensuring normal operation of the drainage pipe. 2. Ensure no sediments, debris, foreign matter, or leakage occurs in the water tray. 3. Check and clean the water tray filter regularly to prevent poor drainage caused by blockage. Vertiv | Liebert® CRV4 | User Manual... - Page 111 4. Reverse the above steps (1 to 3) and replace the pump, refer the Figure 8-9 for better understanding. Description Description Location of water leak detector Drain pipes on the ground Location of water leak detector Figure 8-9 Replace the Condensate Pump Vertiv | Liebert® CRV4 | User Manual...
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Page 112: Chapter 9: Troubleshooting
• If the motor is too hot, cut off the fan power supply; after the motor cools down, power On it again for recovery. • In the event of a hall failure, factory service is required to fix the issue. Vertiv | Liebert® CRV4 | User Manual... -
Page 113: Troubleshooting Of The Heating System
View the unit alarm records, replace the damaged component and Alarm lock power it On again. Compressor coils Check the motor and replace it in case of any defects or shorted and burnt malfunction Vertiv | Liebert® CRV4 | User Manual... - Page 114 If the internal air tightness of the compressor has do not change tightness of the failed and cannot be restored, replace the compressor. after startup compressor has failed Vertiv | Liebert® CRV4 | User Manual...
- Page 115 Too high compression ratio Check that the fans of the evaporator and condenser are normal. Compressor over temperature Too high suction overheat Regulate the EEV or add proper amount of refrigerant. temperature (degree) Vertiv | Liebert® CRV4 | User Manual...
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Page 116: Appendix I: Circuit Diagram Of Model Cr025, Cr035 And Cr045
Appendix I: Circuit Diagram of Model CR025, CR035 and CR045 J38-1 J38-2 J43-1 J43-2 J34-1 J43-3 J34-2 J34-3 J34-4 J34-5 Circuit Diagram of CR025 Vertiv | Liebert® CRV4 | User Manual... - Page 117 J38-1 J38-2 J43-1 J43-2 J34-1 J43-3 J34-2 J34-3 J34-4 J34-5 Circuit Diagram of CR035 Vertiv | Liebert® CRV4 | User Manual...
- Page 118 J38-1 J34-1 J34-2 J38-2 J34-3 J34-4 J34-5 J43-1 J43-2 J43-3 J35-1 J35-2 J35-3 J35-4 J35-5 Circuit Diagram of CR045 Vertiv | Liebert® CRV4 | User Manual...
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Page 119: Appendix Ii: Display Menu Structure Of The Screens
Appendix II: Display Menu Structure of the Screens Display Screen Menus for Graphical Color Screen Vertiv | Liebert® CRV4 | User Manual... - Page 120 Display Screen Menus for LCD Text Screen Vertiv | Liebert® CRV4 | User Manual...
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Page 121: Appendix Iii: Alarm Menu Control Table
Remote humidity sensor {n} CP drive protection U14 Return air high humidity alarm fault alarm ( temp sensor fault) High pressure sensor fault CP drive protection U15 Return air low humidity alarm alarm (drive fan fault) Vertiv | Liebert® CRV4 | User Manual... -
Page 122: Appendix Iv: Routine Maintenance Inspection Items
Check the moisture conditions in the system through the sight glass Check the Electronic Expansion Valve (EEV) Check the re-heater operation Heating system Check the erosion situation of the components Signature_________________________________________________________ Note: Please copy this table as a record keeping purposes. Vertiv | Liebert® CRV4 | User Manual... -
Page 123: (Semi-Annually)
Check the suction pressure and suction superheat degree Check the discharge pressure and condensing sub-cooling degree Refrigeration cycle Check the refrigerant pipes system Check the thermal expansion valve Check whether refrigerant needs to be added (through the sight glass) Vertiv | Liebert® CRV4 | User Manual... - Page 124 Check the fuses and MCB Check and fasten the circuit connections Electrical control part Check the control program Check the contactor suction Signature_________________________________________________________ Note: Please copy this table as a record keeping purposes. Vertiv | Liebert® CRV4 | User Manual...
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Page 125: Appendix Vi: Table Names And Content Of Harmful
X: Means the content of the hazardous substances in at least one of the average quality materials of the part is outside the limits specified in SJ/T11363-2006 Vertiv has been committed to the design and manufacture of environmentally friendly products, we will reduce and eliminate toxic and hazardous substances in products through ongoing research. The following application components,... - Page 126 © 2019 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered marks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks, or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness herein.
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