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Summary of Contents for Vertiv Liebert PCW PW400
- Page 1 Liebert ® PW400 User Manual English, 10028556MAN_ENG, rev. K.1 - 12.01.2024 This document, written in English, is the original version...
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Page 3: Table Of Contents
4.5.1. Using piano jacks............21 8.6. Component replacement............62 4.5.2. Using a crane..............22 8.6.1. Replacing the control board..........62 8.6.2. Replacing the air filters............62 5. Assembly and positioning............25 8.6.3. Replacing the fan............62 5.1. Safety instructions..............25 VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 4 Instruction Leaflet for Transport and Handling (on the packaging) • PW Control Application - Manual • Labels with Gravity Center (on the packaging) • Electric Diagrams • Warranty Certificate VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 5 Min. room operation temperature Max. room operation temperature Min. room operation air humidity Max. room operation air humidity Maximum hydraulic circuit pressure Manufacturing plant Manufacturing date Model Serial number Power input VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 7 Abbreviations - Acronyms Item Definition Automatic Transfer Switch Electronically Commutated [fans] Miniature Circuit Breaker PICV Pressure Independent Control Valve Safe Torque Off Ultracap Ultra capacitor Uninterruptible Power Supply VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 9 The unit is fully defined by the following digits. Dig. Feature Value Description Dig. Feature Value Description Family name Color Black Vertiv™ RAL 7021 3 4 5 Model Standard Power Supply Downflow Down Air discharge Dual Power Supply with (in the raised floor) High voltage option Legacy Single Circuit Cooling Dual Power Supply with...
- Page 10 EC fan advance - HE Devices None Fans EC fan advance - HP IEC61000-6-4 Compliant emissions Heaters None Standard Vertiv™ Special requirements PLP and pallet Special Vertiv™ Packaging PLP and wooden crate Seaworthy VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 11: Safety
• The manufacturer takes no liability for any improper use of the unit. Do not modify the unit • Do not modify the unit without Vertiv™ permission in any way, including the safety devices, the control system and the software. -
Page 12: Personal Protective Equipment
• The key of the electric panel must be kept by the person responsible for maintenance. • Always wear the protective equipment prescribed by the local and Vertiv™ regulations. • It is forbidden to operate on the electrical components without using insulating platforms, or in the presence of water and humidity. -
Page 13: Purpose Of The Unit
The only operation to be made at the installation site are the following: • Base frame installation, mounting of the fan section, plenum attachment • Electrical connections for power supply VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 14: Heat Transfer Fluid
Do not assemble or connect the unit with systems or machines that are different from what is specified in this manual for your unit. Contact Vertiv™ Technical Support for any question. 1.7 Heat transfer fluid The heat transfer fluid is chilled water or mixture water + glycol supplied by an external system. -
Page 15: Unit Description
In this case, the unit is prepared for bottom connection of pipes. The pipes Chilled water connection are equipped with grooved connections. For all water connection options, see Annex C - Connections VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 16: Internal Components
The unit can be equipped either with 2-way valves or PIC valves. Pipe assembly with assembly valves for both coils is located on the left side of the unit. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 17: Air Distribution
The control system operates the opening and closing of the water valve [C] at the water outlet to control the water flow rate to maintain desired operating conditions. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 18: Cooling System Configurations
Do not exceed the nominal operating pressure of the circuit components. All models 25,2 Air bubbles in the circuit can cause a loss of precision in cooling action, therefore de-aeration is recommended. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 19: Storage And Operating Conditions
These limits are referred to new machines or to those that have been correctly installed and serviced. Vertiv™ is not responsible for an improper use of the unit, such as an application outside the specified limits in this chapter. Working outside the specified limits might cause breaks and damages to compromise the unit operation. -
Page 20: Dimensions And Weights
750 mm Coil section 1970 mm Fan module 750 mm 2.8.2. Weights Dimensions Filter section 650 kg Coil section 1240 kg Fan module 650 kg Total unit weight 2540 kg VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 21: Optional Accessory Height
Optional intake plenum with dampers is also delivered separately and needs to be attached on site. • Optional base frame is delivered separately, disassembled, and need to be attached to the fan module, on site, before assembling the unit. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 22: Center Of Gravity
NOTE: Depending on the electric system configuration, the unit may be set to remain switched off for a certain time. What happens when power is restored: The ATS remains on the second power supply until the main power supply is restored. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 23: Main Components
NOTE: The electric panel is designed and manufactured according to EN 60204-1 It is recommended to use 90 degrees LAN connector for HUB/Ethernet switch. ATS (Automatic Transfer Switch) electric panel VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 24: Disconnecting Switches
2.9.6. Ethernet connection RJ11 - CANbus port for connection of an external display RJ45 - Ethernet port for connection of an external laptop VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 25: Protective Functions
Optional sensors T or T+H (up to 3) Energy meter Remote sensors T or T+H (up to 10) Expansion board Differential pressure transducer NOTE: “T” = temperature sensor; “H” = humidity sensor VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 26: Settings
No Teamwork Mode: • The fan will run at defined speed. If a higher call for fan speed occurs, the fan will operate at the higher call. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 27: Technical Data
DP1 is the unit water pressure drop for the new volumetric mixture flow rate. 3.2 Air system Fan number and weight Unit Number of fans Individual fan weight High power 30,1 kg PW400 High efficiency 25,8 kg Z.A. Fans 27,9 kg VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 28: Electrical System
Do not run the Modbus cable in the same conduit, raceway or chase used for high-voltage wiring. Mandatory shield connection to ground close Master (indoor unit control board) For Modbus network lengths greater than 130 m, contact Vertiv™ for assistance. 3.3.2. Electrical data for units with power supply 400V / 3ph +N / 50Hz + Earth... -
Page 29: Handling
• If any parts are found missing or damaged, please report to the carrier immediately. • If you find any damage, please report to the carrier and to the local distributor too. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024... -
Page 30: Transport With Packaging
• Fix the slings to the spreader bar [C] NOTICE Lift the unit with a speed suitable for the load to be moved, so as not to damage the structure. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 31: Unpacking
• Fix the piano jacks to the unit by straps, placing a protective material between the unit and the straps. • Lift slightly the forks of the piano jacks and remove the pallet. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 32: Using A Crane
• Insert a sling or a chain in each of the eyebolts. • Fix the slings or chains to a 6-points lifting bar. WARNING Lift the coil module ONLY without the fan module attached. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 33 • Move the unit to its installation site. NOTICE Lift the unit with a speed suitable for the load to be moved, so as not to damage the structure. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 35: Assembly And Positioning
Make sure you have the space available for mounting operations. After the assembly the unit can be moved and positioned in the working site. 5.2.1. Fan module preparation • Bring the fan section to the final location. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 36 • Attach the divider panel to the frame. • Remove the bolts holding the fan module on the pallet • Lift the fan section using a 4-point lifting bar and remove the pallet. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 37 • Remove the front and back panels or grilles from the fan module. • Insert four dowels (M8) into the upper frame. • Add gasket over the perimeter of the fan module VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 38: Coil Module Assembly
• Remove the pallet from underneath the module. • Lift the coil module, move it over the fan section. WARNING Lift the coil module ONLY without the fan module attached. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 39 - threaded insert [D] in the coil section frame structure There are two types of screws: [X] → 4 (front) + 4 (back) M8x110 hex head screws with washers [Y] → 2 (left) + 2 (right) M8x20 screws VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 40: Filter Module Assembly
• Use appropriate shackles to lift the module. • Align the position of the filter module with the coil module and place in on top of the unit. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 41 • Remove front and rear panels from the Filter module. • Fix the Filter module to the Coil module with 12 x Ø 4,8mm tapping screws (highlighted in the picture) • Re-attach all the panels. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 42: Chilled Water Piping Arrangement
5.3.1. Water piping with bottom connection Ref. Description Inlet grooved connection Outlet grooved connection PICV or 2-way valves* Coil CW inlet Coil CW outlet * PICV option shown in the picture Support bracket VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 43: Water Piping With Top Connection
Inlet grooved connection Outlet grooved connection PICV or 2-way valves* Coil CW inlet Coil CW outlet Support bracket Water drain valves * 2-way valve option shown in the picture VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 44: Water Piping With Lateral Connection
The condensate drain piping is connected inside of the cabinet and leads into single outlet [A] at the bottom of the coil section underneath the unit. For more details see chapter 6.4.5 Condensate drain connection. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 45: Installation
Pay attention to the safety labels on the unit and to the safety warnings in this chapter. 6.2 Overview 6.2.1. Coil section preparation NOTICE Vertiv™ takes no responsibility for systems not compliant with the specifications given in this manual. Lack of compliance to the specifications given by Vertiv™ voids the warranty. Operation See... -
Page 46: Specification For Site Preparation
Leave a free space of at least 1 m on the front of the unit to allow safe installation and maintenance operations. * optional accessory – for more details, see chapter 2.8.3. Optional accessory height VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 47: Required Free Space From The Ceiling
In case of threaded connections use hemp and paste to get a reliable pressure - tight joint. Threaded connections NOTICE Usage of Teflon is allowed but Vertiv™ is not responsible for any damages during the joint couplings, such as cracking brass nipple. See chapter for details regarding the 6.4.2. -
Page 48: Condensate Piping Requirements
Pass the drain pipe through the cable bushing on the top of the fan module along the entire tube length. • Reposition the internal bottom panel and fix it with the two screws. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 49: Condensate Drain Routing
The table on the right shows the Temperature °C < 65 reference values for corrosion on copper, Oxygen content < 0,1 these values must be considered as guidelines to avoid corrosion. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 50: Electric System Requirements
(Wye) with earthed neutral (TN or TT system). If you need three-phase distribution Delta-connected (Δ) or Star-connected power (Wye) without ground or floating ground (IT) please contact Vertiv™ Technical Support. Power supply connection VERTIV™... - Page 51 Make sure that all electrical components are undamaged. • The cables must not touch hot surfaces. If necessary, wrap the electrical Hot surfaces cables by a thermal insulating sheath. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 52: Piping Connections
• Support both the horizontal and the vertical piping by vibration dampening clamps that include rubber gaskets. Place the clamps every 1,5-2 mm. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 53: Joining Pipes With The Grooved Connection
Tighten all nuts evenly by alternating sides until metal-to metal contact occurs at both bolt pads. NOTE: Tightening the nuts evenly is important to prevent gasket pinching. NOTICE Leakage may occur if the gasket is pinched or damaged. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 54 ±0,76 mm ±0,76 mm Actual + 0,00 (ref. only) 88,9 0,79 0,89 15,88 8,74 84,94 - 0,46 1,98 2,11 91,44 88,9 0,79 0,89 15,87 7,95 84,94 - 0,46 1,98 4,78 VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 55: Chilled Water Connection To The External Source
• The inlet piping should lead directly into the coil. • The outlet piping goes from the coil into the valves and from the valves out from the unit. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 56: Electrical Connections
If the unit is provided with ATS, there are two power cables [E] (4 + 4 cords) to be connected to the inlet terminals of the ATS panel [F]. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 57: Contacts For The Unit Status Signals
• The ID contacts are on the control board. 6.5.4. Sensor connections • Any remote or additional sensor must be connected to the unit via Modbus. See chapter 6.6. Modbus connections and settings. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 58: Supply Air Temperature Sensor
The sensor has been already installed in the unit and it’s fixed in the fan module with at least 3m of cable length available. Remove the stripe and place it according the drawing. NOTE: To grant a proper unit regulation, install the sensor according the drawing. Vertiv™ is not responsible in case of improper installation. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024... -
Page 59: Modbus Connections And Settings
Optional sensors T or T+H (up to 3) Energy meter Remote sensors T or T+H (up to 10) Expansion board Differential pressure transducer NOTE: T - Temperature sensor H - Humidity sensor VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 60: Filling The Water System
6.7.2. Adding ethylene glycol If it is required to work with temperatures below 0°C, or if the tubing is to run Preventing freezing outdoors, it is recommended to use glycol mixtures. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 61: Final Check
Make sure that the condensate drain line is connected and not obstructed. Cooling system • Make sure that all the factory clamps that fix the piping to the structure have been reinstalled (if removed during the installation). VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 62 Make sure that all the safeguards (panels, grids) have been re-attached. Safeguards • Close and lock all the doors. Everything OK? • Start the normal operation, see chapter 7. Operation VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 63: Operation
PDX-PCW Control Application for details. If the LED does not light up, see chapter 9. Troubleshooting CAUTION The fan starts immediately (the fan always works when the unit is ON). VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 64: Check The Operation
Teamwork Mode 2 (Independent) - The control drives cooling, heating, ventilation, humidification and dehumidification based on local requests, while avoiding operational conflict with the other units in the network. • Teamwork Mode 3 (Smart Aisle) VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 65: Maintenance
All the tasks that are explained in this chapter must be carried out only by authorized and trained technicians. We recommend the Vertiv™ Customer Service. For any operation that is not specifically mentioned in this manual you must contact Vertiv™ Technical Support. Read carefully the chapter Safety. -
Page 66: Maintenance Program
Open all the local and remote disconnecting switches of the unit. • Wait at least 5 minutes. Verify with a voltmeter that the power is OFF. • Refer to the Electric Diagrams provided with the unit VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 67: Water System
Check that the water valve operates correctly. • Check the temperature and the pressure of the water on the inlet and outlet • side using thermometers and manometers, if installed. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 68: Air System
The accessory operates as required? (optional) Temperature • 8.7 Calibrations safety switch Condensate tank • Visual inspection for dirtiness, damage, corrosion (optional) Clean if necessary. (*) Check more frequently in dusty environment. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 69: Draining The Chilled Water System
Open the drain valve [C], or [C1] and [C2] in case of unit with top connection. • Open the air vent valves [A] • Keep the drain valves [C] or [C1], [C2] open until no more water flows out of them. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 70: Component Replacement
• After reassembling, connect the fan to a laptop and use the configuration software provided by the manufacturer to set the fan Modbus address (see 6.6.2 Setting of Modbus devices and the PDX-PCW Control Application for details.) VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 71: Replacing The Front Fan
• Keep the fan in a horizontal position. • Pay attention to not damage any cables present in the fan bay. • To reassemble the fan, proceed in reverse order VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 72: Replacing The Rear Fan
8.6.3.2. Replacing the front fan • To reassemble the fan, proceed in reverse order NOTICE Re-attach the divider panel between the fansmand the frontal protective grid panels. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 73 Now you can safely remove the actuator. To install new actuator, it is necessary to set ring to end stop. Then proceed with steps 6 – 1 in this order. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 74: Calibration
In case of replacement of the clogged filter differential pressure switch, then turn the screw [A] to adjust the setting. Temperature safety Setting: 120°C ± 6°C switch (if heating is Manual reset present VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 75 The power cables are not connected Connect the cables The fans do not run There is no signal Check the Modbus chain The unit is noisy The fan is noisy Check the fan fixing VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 77 6. If you need to keep the unit in a storehouse for reuse 2.6.1 Storage conditions Handle to authorized disposal company according to the 7. If you need to scrap the unit local regulations about waste disposal. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 79: Annex A - Chilled Water Circuit Scheme
Annex A - Chilled water circuit scheme VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 81: Annex B - Safety Labels
Do not remove or cover the labels placed on the unit by the manufacturer. Check regularly that the warning label are still on the unit and that they are clearly visible. Replace any missing or damaged label. Labels list Identification Description VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 82: Labels Position
Labels position VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 83: Annex C - Connections
2 x Ø 48 mm Free cutout Ø 48 mm Customer low voltage connection Ø 48 mm Dimensions for piping – Top connection (Top view) NOTE All the dimensions are in millimeters VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 84: External Cw Piping Connections
External CW piping connections Bottom connection CW OUTLET Ø 88,9 mm (grooved) CW INLET Ø 88,9 mm (grooved) VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 85 Lateral connection CW OUTLET Ø 88,9 mm (grooved) CW INLET Ø 88,9 mm (grooved) VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 86 Top connection CW OUTLET Ø 88,9 mm (grooved) CW INLET Ø 88,9 mm (grooved) VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 87: Annex D - Ats (Automatic Transfer Switch)
- Maintenance and servicing operations must be performed only by trained and authorized Personnel personnel. Arc hazard - Ensure that no metal objects can fall in the cabinet (risk of electrical arcing). VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 88: Description
Three types of ATS are available: - Type 03: configurable through four potentiometers and DIP switches ATS feedback (optional): Monitoring Relay to provide customer information for use of Main or Backup line. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 89: Specifications
Fault Product OK Wait Auto Mode Manual Mode Manual retransfer NOTE To reset a fault, it is required to open the cover. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 90: Technical Data
• Insert your padlock [C] in the clip (4-8 mm shackle diameter). 90º 90º Now the switch is locked in the power disconnecting position. NOTE: The handle can be padlocked only in the “O” position. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 91 Potentiometer 4 0 sec Return time, minimum required time to return on the main/priority line NOTE For different voltage and frequency, please contact the Vertiv™ Technical Support. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 92: Operation
NOTE Keep the cover open if you do not want the ATS to be in automatic mode during the initial power-up. NOTICE Before powering on the ATS, manually operate it to ensure that it can move normally. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 93: Maintenance
- outgoing line (load side) - control cables • For the ATS type 03: adjust the configuration settings. • Connect the PW400 unit to the power supply. • Restart the PW400 unit. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 94: Troubleshooting
Check that the plastic pin is in place when the cover is closed at the bottom of the cover. This pin activates the sensor which indicates the position of the cover (open or closed). VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 95: Description
The electric current heats the water until producing steam (Joule effect). The quantity of steam produced is proportional to the electric current, which is in turn proportional to the level of water. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024... -
Page 96: Specifications
(2) = not less than 200% of the chloride content in mg/l CL- (3) = not less than 300% of the chloride content in mg/l CL- NOTE There is not reliable relationship between hardness and conductivity of the water VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 97: Installation
[16] (not supplied). Use a drain hose Ø32 mm, maximum length 10 m with minimum 5% gradient, don’t make siphon on this hose to avoid back pressures in the drain piping. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... -
Page 98: Startup And Operation
Maintenance operations must be carried out only by authorized and trained technicians. We recommend the Vertiv™ Customer Service. For any operation that is not specifically mentioned in this manual you must contact Vertiv™ Technical Support. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024... - Page 99 • Fit the new cylinder in the humidifier by performing the previous operations in reverse order. NOTICE Check that the model and the power supply voltage of the new cylinder is the same as the one being replaced. VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
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Page 100: Troubleshooting
Excess current at the electrodes Check the operation of the drain solenoid valve/ pump, the seal of the fill solenoid valve when not energized, drain some of the water and restart VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®... - Page 101 The supply or overflow circuit has leaks Check the entire water circuit floor below The steam outlet hose is not properly secured Check that the clamp on the steam outlet is tight to the cylinder VERTIV™ | Liebert PW400 | UM | 10028556MAN_ENG | 12.01.2024 ®...
- Page 104 , via Leonardo Da Vinci 16/18, Zona Industriale Tognana, 35028 Piove di Sacco (PD) Italy, Tel: +39 049 9719 111, Fax: +39 049 5841 257 © 2024 Vertiv Co. All rights reserved. Vertiv, the Vertiv logo and Vertiv Liebert PW400 are trademarks or registered trademarks of Vertiv Co. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners.
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