LEGRAND MINKELS CW40 User Manual

Close control chilled-water unit for high density systems

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Close Control Chilled-Water Unit for high density systems

User Manual

HF61G00679B CW MINKELS-0-UM-GB_HIREF

HF61G00679A HRCC MINKELS-0-UM-GB_HIREF

CW40-CW60

Rev. 26/08/2021

Rev. 01/07/2021

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Page 1 CW40-CW60 Close Control Chilled-Water Unit for high density systems Close Control Chilled-Water Unit for high density systems User Manual HF61G00679B CW MINKELS-0-UM-GB_HIREF Rev. 26/08/2021 HF61G00679A HRCC MINKELS-0-UM-GB_HIREF Rev. 01/07/2021...
Page 2 HF61G00683B NRCD MINKELS-0-UM-GB_HIREF...
Page 3: Table Of Contents
Index General Description ........................1 Structure ..................................2 Application limits ............................... 3 Components ................................3 Installation warnings ..............................5 Inspection / Transport / Positioning ....................6 Inspection on receipt ..............................6 Lifting and transport ..............................6 Unpacking ................................. 6 Positioning ................................. 6 Installation ............................
Page 4 HF61G00683B NRCD MINKELS-0-UM-GB_HIREF...
Page 5: General Description
General Description CW40-CW60 “CCAC” self-contained units are specially designed for installation in technological environments where a spot cooling is needed . CW40-CW60 units represent the state of the art between technology and design as well as all HiRef S.p.A. products: The depth of 1200 mm, allows the compatibility with standard server rack: furthermore the innovative design and the high tech selected colours make CW40- CW60 units complementary to the last generation of IT devices.
Page 6: Structure
CW 60 Pos. Description Pos. Description Chilled water coil Radial Fan Electrical panel Water valve Stainless steel drain pan Water connections 1.1 Structure CW40-CW60 units are designed with a self supporting frame and all components are produced using sophisticated computer driven machines and special tools. All sheet metals are galvanized powder coated giving to the units the image and the quality like last generation of IT devices.
Page 7: Application Limits
1.2 Application limits Tab. 2 Operation limits Power supply limits and storage conditions Model CW40 CW60 Power supply [Vac / Ph / Hz] 230 (±10%) / 1 / 50-60 400 (±10%) / 3+N / 50 Temperature from -10 °C Storage conditions +50 °C Relative humidity less than...
Page 8 Fig.1 Basic cooling circuit Pos. Description Pos. Description Chilled water inlet Coil heat exchanger Chilled water outlet Breather valve 3-way valve (Opt.) 2-way valve Plug fan Water Valve Modulating valves allow an high precision in controling the rack temperature 3 way for constant flow systems 2 way valve for variable flow.
Page 9: Installation Warnings
All CW units are supplied with 3 or 2 way valve with 0 ÷ 10 V signal regulation. 1.4 Installation warnings General rules When installing or servicing the unit, you must strictly follow the rules provided in this manual, comply with the directions on the units themselves and take all such precautions as are necessary.
Page 10: Inspection / Transport / Positioning
Inspection / Transport / Positioning 2.1 Inspection on receipt On receiving the unit, check that it is perfectly intact: the unit left the factory in perfect conditions; immediately report any signs of damage to the carrier and note them on the “Delivery Slip” before signing it. Minkels or its agent must be promptly notified of the entity of the damage.
Page 11: Installation
Installation The CW40-CW60 air-conditioning unit is suitable for all environments except aggressive ones. Do not place any obstacles near the units and make sure that the air flow is not impeded by obstacles and/or situations causing back suction. Fig. 7 Service area For the option to exchange the entire unit, a space of 1400mm is required on one side.
Page 12: Electrical Connections
Electrical Connections 4.1 Generalities Before carrying out any job on electrical parts, make sure the power supply is disconnected. Check that the mains electricity supply is compatible with the specifications (voltage, number of phases, frequency) shown on the unit rating plate. The size of the cable and line protections must conform to the specifications provided in the wiring diagram.
Page 13 Regarding the differential protection that needs to be installed upstream, it is necessary to use a type A switch that is sensitive to direct currents. It is mandatory for it to have the following features: Calibratable operation threshold 300mA Calibratable operation delay 200ms HF61G00683B NRCD MINKELS-0-UM-GB_HIREF...
Page 14: Operating Diagrams
Operating Diagrams Changing the side, frontal and rear pannels it’s possible to modify the air flow configuration of the CW40 as in the following pictures. On the CW60 only “Horizontal Air Flow (Rear-Front) configuration is possible. Fig. 11 Operating diagrams HF61G00683A NRCD MINKELS-0-UM-GB_HIREF...
Page 15: Start-Up
Start-Up 6.1 Preliminary checks Check that the electrical connections have been made properly and that all the terminals are securely tightened. This check should also be included in a periodic one year inspection. 6.2 Starting operations Before starting the unit, turn the main switch on, select the operating mode desired from the control panel and press the ”ON”...
Page 16: Setting Operating Parameters
Setting Operating Parameters 7.1 Generalities All the control devices are set and tested in the factory before the unit is dispatched. However, after the unit has been in service for a reasonable period of time you can perform a check on the control devices. The settings are shown in Tab.
Page 17: Maintenance
Maintenance The only operations to be performed by the user are to switch the unit on and off. All other operations are to be considered maintenance work and must thus be carried out by qualified personnel trained to do their job in accordance with current laws and regulations.
Page 18 Fig. 15 Purging the air out of the water coil The relief valve is accessible from the backside of the unit CW40 CW60 HF61G00683A NRCD MINKELS-0-UM-GB_HIREF...
Page 19: Troubleshooting
Troubleshooting On the next pages you will find a list of the most common reasons that may cause the package unit to fail or any malfunction. These causes are broken down according to easily identifiable symptoms. You should be extremely careful when attempting to implement any of the possible remedies suggested: overconfidence can result in injuries, even serious ones, to inexpert individuals.
Page 20 HF61G00683A NRCD MINKELS-0-UM-GB_HIREF...
Page 21 NOTE: HF61G00683B NRCD MINKELS-0-UM-GB_HIREF...
Page 22 HF61G00683A NRCD MINKELS-0-UM-GB_HIREF...
Page 23 MADE BY H i R e f S. p. A Viale Spagna, 31/33 35020 Tribano - Padova - ITALY Tel. +39.049.9588511 - Fax +39.049.9588522 e-mail: info@hiref.it - http://www.hiref.it HiRef S.p.A All rights reserved. No part of this publication may be reproduced without prior written permission from HiRef S.p.A reserves the right to make changes in specifications and other information contained in this manual without prior notice.

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