Schäfer iQdata Backcooler User manual

SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail]
www.schaefer-it-systems.com
As on: 2.05.2017 (subject to technical changes)
Operating instructions
iQdata Backcooler

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Table of contents
Table of contents................................................................................................................................................1
Safety..................................................................................................................................................................3
General description ........................................................................................................................................3
Operational safety warning symbols ..............................................................................................................3
Safety code.....................................................................................................................................................4
General safety instructions.............................................................................................................................6
Technical data ....................................................................................................................................................7
Proper use......................................................................................................................................................7
General data...................................................................................................................................................7
Water quality requirements.................................................................................................................................9
Description........................................................................................................................................................11
General information......................................................................................................................................11
Function principle .........................................................................................................................................11
Appositioning the cabinets together .............................................................................................................13
Connection to the cold water network ..........................................................................................................14
Floor section, right door hinge......................................................................................................................14
Filling the Backcooler with cold water ..........................................................................................................15
Water-side draining of Backcooler ...............................................................................................................15
Air separation of hot areas / cold area .........................................................................................................16
Airflow rectifier / Filter...................................................................................................................................18
Performance charts ..........................................................................................................................................19
Connection variants to the cooling system.......................................................................................................20
Backcooler control............................................................................................................................................21

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
CAUTION
These operating instructions must be read thoroughly beforehand and followed while installing and
operating the cooling unit.
Retain these instructions for the entire usable life of the device.
These instructions correspond to the state of technology at the time of introduction of the product into
the market.
They are not to be considered as unsuitable only due to the reason that they were not updated
following new knowledge regarding design- and manufacturing methods.
SCHÄFER reserves the right to update the product and related operating instructions without being
obligated to similarly amend earlier products and operating instructions, unless under extraordinary
circumstances. Please contact SCHÄFER in order to request or procure the current versions or the
related changes, which can be considered part of the operating instructions.
It is absolutely necessary to follow the measures listed in the chapter with safety
instructions.
Read all the information in this instruction manual carefully and pay special attention
to the rules marked with the symbols. Non-compliance with these rules can lead to
damage to goods or persons as well as damage to the environment and the device.
The manufacturer is not liable either for the improper handling of the cooling unit or
for unpermitted changes and non-compliance of the instructions in this manual.

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Safety
General description
The Backcooler is a high-performance cooling unit for cooling IT components, without additional
fans.
Particularly energy-efficient cooling is possible because of the low, air-side pressure drop. The heat
is dissipated in the immediate vicinity of the origin, so that the room is not subject to thermal load.
Operational safety warning symbols
Danger point Safety instructions Caution
Caution Danger of electric voltage and current
Caution Hot surface, risk of burns
Caution Rotating parts
Disconnect before working on the power supply
Caution Possible damage to the device
Danger Danger of high voltage
Note Possible damage to the environment
Important information or note

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Safety code
The customer must retain this instruction manual and provide it to the
respective personnel for installation, set up, use and maintenance.
DANGER
Dangerous situation is present and, if the measures are not followed, can lead to
serious injuries and even death. Please follow the measures compulsorily.
WARNING
Dangerous situation can occur and, if the measures are not followed, can lead to
serious injuries and even death. Please work with utmost care.
CAUTION
Dangerous situation can occur and, if the measures are not followed, can lead to
minor or few injuries or damages to goods.
NOTE
Possibly dangerous situation can occur and, if it is not avoided, lead to damage to
goods.
Before assembling and commissioning, this manual must be read and understood.
The device must only be operated in the environment and performance limits
intended and specified for it.
The device should be transported, unpacked, assembled, operated, serviced and
otherwise used only by suitable, qualified, trained and authorised specialists.
NO changes or additions should be made to the device without the approval of
SCHÄFER IT Systems

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Danger of operational- & failure safety
CAUTION
Work performed on the device by unqualified personnel, e.g. cleaning, maintenance
or repair, can endanger the operational safety of the device.
To ensure a long life of the device, the device must be regularly cleaned and
serviced by qualified personnel.
Danger of over-voltage
NOTE
Switching operations in the network or lightening can cause dangerous over-
voltages in the network, which need to be absorbed through suitable measures.
These over-voltages can destroy the device or parts and lead to failure.
The operator of the device must ensure that a suitable over-voltage protection
system for the device has been installed by a technician.
It is recommended to use an over-voltage protection of the type SPD3 and to install
it in the close vicinity of the device.
Hot surfaces
CAUTION
Some parts of the device can become hot during operation or in case of failure.
Let the hot parts cool down before starting any work on the device

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Before starting any work on the interior of the device, disconnect it from the power
supply and switch it off, and ensure that the device cannot be switched on accidentally.
Only trained specialists should work on this system.
While working on the unit, the standards and guidelines, as amended, are applicable.
Non-adherence can lead to serious injuries or even death.
General safety instructions
This cooling unit was developed and designed for professional use as per the applicable rules.
Please check the complete list of applicable rules for the attached declaration for CE-conformity. The
device was manufactured with high-quality components, and checked for reliability and safety (see
attached test report) and provided with a guarantee.
This operating instructions manual contains basic instructions which are to be followed during
installation, operation and maintenance. Thus, it must be read and followed by the installer as well as
the responsible specialists / operators before installation and operation. The manual must always be
available at the place of use of the system.

Any work should only be performed by trained personnel.

Follow the rules to avoid accidents.

Take special care while lifting and setting down the device

Secure the device to prevent it from falling over

Do not climb on or enter the cooling unit

Do not remove any protective panels. Safety devices should not be bypassed.

Follow the appropriate EN- and IEC-standards for the electrical connection of the device and
the conditions of the power supply company

Switch off the current when working on the device

Follow the national rules of the country in which device has been installed.

Individual protective clothing (i.e. gloves, glasses, helmet, shoes) as per the guidelines of the
safety manager and the applicable rules are to be worn by the operators and maintenance
personnel during transport, installation, and usual or extraordinary maintenance. Coolant water
additives can lead to burns to skin and eyes. Wear protective glasses and -gloves

The device should only be used for cooling as per the SCHÄFER specification

Before any maintenance work, please read and follow the instructions given in the respective
chapters

Follow material compatibility in the entire hydraulic circuit

The manufacturer is not liable for damage due to improper handling of the cooling unit or due
to unapproved changes to the device.

The special tool for opening the device is to be placed clearly visible in the vicinity of the
device.

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Technical data
Proper use
The Back Cooler is an air/water heat exchanger and is mounted directly on the rear of the IS-1
cabinet.
Particularly high energy efficiency is achieved by eliminating the fans.
A special adapter frame can be used to mount on the server racks by other manufacturers.
The Backcooler must be operated above the dew-point temperature to prevent condensation from
forming.
The installation of the Backcooler must be frost-free.
The floor should be able to bear the load of the server cabinet (spread over
4 levelling feet –point loads)
General data
General data
Housing material
Sheet steel
Operating temperature range
In the installation room 5°C to 35°C
Absolute humidity
8 g/ kg tr air
Height
2000 mm; 2200 mm
Width
800 mm (700 mm upon request)
Depth
80 mm (hinge section 120 mm)
Cooling technology
Cooling capacity
up to 38 kW
Cold water supply pipe
12°C to 20°C
Cold water return pipe
18°C to 26°C
Cooling water volume flow
4.5 m³/h
Water / glycol mixture up to 35%
Max. operating pressure
10 bar
Condensate
Operate only above the dew-point temperature

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Article number
Height
Width
RAL
Door hinge
Pipe module
Article number
2000
800
7035
on right side
from below
2000
800
9005
on right side
from below
2000
800
7035
on left side
from below
2000
800
9005
on left side
from below
2000
800
7035
on right side
from above
2000
800
9005
on right side
from above
2000
800
7035
on left side
from above
2000
800
9005
on left side
from above
2200
800
7035
on right side
from below
2200
800
9005
on right side
from below
2200
800
7035
on left side
from below
2200
800
9005
on left side
from below
2200
800
7035
on right side
from above
2200
800
9005
on right side
from above
2200
800
7035
on left side
from above
2200
800
9005
on left side
from above
2000
700
7035
on right side
from below
upon request
2000
700
9005
on right side
from below
upon request
2000
700
7035
on left side
from below
upon request
2000
700
9005
on left side
from below
upon request
2000
700
7035
on right side
from above
upon request
2000
700
9005
on right side
from above
upon request
2000
700
7035
on left side
from above
upon request
2000
700
9005
on left side
from above
upon request
2200
700
7035
on right side
from below
upon request
2200
700
9005
on right side
from below
upon request
2200
700
7035
on left side
from below
upon request
2200
700
9005
on left side
from below
upon request
2200
700
7035
on right side
from above
upon request
2200
700
9005
on right side
from above
upon request
2200
700
7035
on left side
from above
upon request

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SCHÄFER IT-Systems Industriestr. 41 D-57518 Betzdorf
Phone: [phone] [e-mail] www.schaefer-it-systems.de
As on: 2.05.2017 (subject to technical changes)
User Manual
iQdata Backcooler
Dimensioned drawings (view from below)
Water quality requirements
For safe functioning of the iQdata Backcooler, the cooling water must be present in a
certain water quantity, temperature and pressure. Adhere to water quality as per
VGB-R 455 P.
The requirements related to the primary water quality are presented as follows in addition to
the data shown in the annexe:
To ensure maximum life span of the system, the fed cooling water must correspond to the
VGB-cooling water-guidelines (VGB-R 455 P). The cooling water used must be soft enough
to prevent deposits; but neither must it be too soft, as this would lead to corrosion of the
system.
The following table contains the most important contaminants as well as the methods to
remove them:
Pollution of water
Method of disposal
Mechanical contaminants (dp > 0.8 mm)
Filtration of water
Excessive hardness
Softening of water by ion exchange
Moderate content of mechanical contaminants and
hardeners
Addition of dispersing or stabilising
agents
Moderate content of chemical contaminants
Addition of passivation agents and
inhibitors
Biological contaminants (bacteria and algae)
Addition of biocides
It is recommended that the following hydrological data be achieved as far as possible: