nVent Hoffman RackChiller CDU800 Guide
WE CONNECT AND PROTECT
RackChiller CDU800 Coolant Distribution
Unit
Operation and Instruction Manual
89217391
2
89217391 Rev. A
©2022 nVent
Produced by
nVent
2100 Hoffman Way
Anoka
MN 55303, USA
The details in this manual have been carefully compiled and
checked - supported by certified Quality Management System
to DIN EN ISO 9001/2015
The company cannot accept any liability for errors or misprints.
The company reserves the right to amendments of technical
specifications due to further development and improvement of
products.
Copyright © 2018
All rights and technical modifications reserved
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1Contact Addresses.................................................................................................................................6
1.1 Manufacturer's address ..................................................................................................................... 6
1.2 Service addresses ............................................................................................................................. 6
1.3 Making contact................................................................................................................................... 6
2About this manual ..................................................................................................................................7
2.1 Use and storage ................................................................................................................................ 7
2.2 Target audience................................................................................................................................. 8
2.3 Explanation of the various notes ....................................................................................................... 9
2.4 Seal of quality .................................................................................................................................. 10
2.5 Further applicable documents ......................................................................................................... 10
3Terms of warranty ................................................................................................................................11
4Safety.....................................................................................................................................................13
4.1 General information ......................................................................................................................... 13
4.2 Intended use.................................................................................................................................... 14
4.3 Safety of personnel.......................................................................................................................... 14
4.4 Transport and installation/start-up................................................................................................... 16
4.5 Operation......................................................................................................................................... 17
4.6 Maintenance .................................................................................................................................... 17
4.7 Operating faults ............................................................................................................................... 17
4.8 Use of cleaning agents .................................................................................................................... 18
4.9 Use of chemicals ............................................................................................................................. 19
4.10 Residual risks .................................................................................................................................. 19
4.11 Safety labels .................................................................................................................................... 20
5Description / Overview.........................................................................................................................21
5.1 General information ......................................................................................................................... 21
5.2 Safety devices ................................................................................................................................. 21
5.3 Factory protective measures ........................................................................................................... 21
5.4 Foreseeable misuse ........................................................................................................................ 22
6System Layout......................................................................................................................................23
6.1 Overview.......................................................................................................................................... 23
6.1.1 Primary circuit.............................................................................................................................. 24
6.1.2 Secondary circuit ......................................................................................................................... 25
6.2 Unit connections and electrical components ................................................................................... 27
7Receiving the CDU ...............................................................................................................................28
8Handling the CDU.................................................................................................................................29
8.1 Installation site selection.................................................................................................................. 29
8.2 Transport to the installation location................................................................................................ 29
9Setting Up..............................................................................................................................................31
9.1 Notes................................................................................................................................................ 31
9.2 Overview.......................................................................................................................................... 32
9.3 Installation guidelines ...................................................................................................................... 34
9.4 Connections..................................................................................................................................... 36
9.4.1 Primary circuit.............................................................................................................................. 36
9.4.2 Secondary circuit ......................................................................................................................... 40
9.5 Electrical connection........................................................................................................................ 41
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9.5.1 Residual-current-operated circuit-breaker................................................................................... 41
9.5.2 General information ..................................................................................................................... 41
9.6 Filling................................................................................................................................................ 46
9.6.1 Antifreeze and anticorrosion agents............................................................................................ 47
9.6.2 Primary circuit.............................................................................................................................. 48
9.6.3 Secondary circuit ......................................................................................................................... 49
9.6.3.1 Using internal fill pump ........................................................................................................ 49
9.6.3.2 Using alternative filling procedure........................................................................................ 51
9.6.3.3 Using external fill kit............................................................................................................. 54
9.7 Venting of closed circuits................................................................................................................. 59
9.8 Final steps after start-up.................................................................................................................. 59
10 Operation...............................................................................................................................................60
10.1 Notes................................................................................................................................................ 60
10.2 Adjustments..................................................................................................................................... 61
10.2.1 Low water level........................................................................................................................ 61
10.3 Control unit....................................................................................................................................... 62
10.3.1 Selection and adjustment of values......................................................................................... 62
10.4 Password protection ........................................................................................................................ 64
10.5 Program overview............................................................................................................................ 65
10.6 Screen contents and descriptions ................................................................................................... 68
10.6.1 Direct selection ........................................................................................................................ 68
10.6.2 General functions/symbols ...................................................................................................... 69
10.6.3 Page 1300, Settings ................................................................................................................ 70
10.6.4 Page 1310 "Languages".......................................................................................................... 73
10.6.5 Page 1402 "Communication parameters" ............................................................................... 74
10.6.6 Page 1500, Information ........................................................................................................... 76
10.6.7 Page 2200 "Overview"............................................................................................................. 77
10.6.8 Page 2300, schematic system diagram................................................................................... 78
10.6.9 Page 4200, screen cleaning.................................................................................................... 80
10.6.10 Page 7492, sensor adjustment................................................................................................ 81
10.6.11 Page 7581, general settings.................................................................................................... 82
10.6.12 Page 7582, Einstellungen Data log settings............................................................................ 83
10.6.13 Page 7583, control settings..................................................................................................... 84
10.6.14 Page 7681, temperature PID settings ..................................................................................... 85
10.6.15 Page 7682, pump speed PID settings..................................................................................... 86
10.6.16 Page 7683, environment/primary circuit settings..................................................................... 87
10.6.17 Page 7684, low water/secondary circuit settings..................................................................... 88
10.6.18 Page 9999, Alarm.................................................................................................................... 90
10.6.19 Page 9998 "Message history".................................................................................................. 91
11 Maintenance..........................................................................................................................................93
11.1 Notes................................................................................................................................................ 93
11.2 Overview.......................................................................................................................................... 95
11.3 Maintenance plan ............................................................................................................................ 97
11.4 Maintenance jobs............................................................................................................................. 99
11.4.1 Primary circuit........................................................................................................................ 100
11.4.2 Secondary circuit ................................................................................................................... 102
11.4.3 Checking of the expansion vessel......................................................................................... 104
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11.4.4 Check of the circuit breaker................................................................................................... 105
11.4.5 Antifreeze agent..................................................................................................................... 106
11.5 Restart ........................................................................................................................................... 106
12 Troubleshooting .................................................................................................................................107
12.1 Notes.............................................................................................................................................. 107
12.2 General malfunctions..................................................................................................................... 108
12.3 Electrical connection...................................................................................................................... 109
12.4 Unit-specific ................................................................................................................................... 110
12.5 Control valve.................................................................................................................................. 111
12.5.1 Replacement.......................................................................................................................... 112
12.6 User interface ................................................................................................................................ 116
12.7 Control unit..................................................................................................................................... 117
12.8 Restart ........................................................................................................................................... 118
13 Disconnecting the device..................................................................................................................119
13.1 Notes.............................................................................................................................................. 119
13.2 Transport and storage ................................................................................................................... 120
13.3 Dismantling.................................................................................................................................... 121
13.4 Recycling ....................................................................................................................................... 121
14 Technical Data....................................................................................................................................122
14.1 Dimensions, connections............................................................................................................... 122
14.2 General data.................................................................................................................................. 123
14.3 Weights.......................................................................................................................................... 123
14.4 Primary circuit................................................................................................................................ 124
14.5 Secondary circuit ........................................................................................................................... 125
14.6 Electrical connection...................................................................................................................... 126
14.6.1 Supply.................................................................................................................................... 126
14.6.2 Interfaces............................................................................................................................... 126
14.7 Performance curves....................................................................................................................... 127
14.8 Schematic flow chart...................................................................................................................... 129
15 Spare Parts..........................................................................................................................................130
15.1 Part type......................................................................................................................................... 130
15.2 Mechanical parts............................................................................................................................ 130
15.3 Electrical parts as indicated on the circuit diagram (equipment designations).............................. 131
15.4 Electrical cabinet............................................................................................................................ 132
16 Index ....................................................................................................................................................133
Contact Addresses
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1 Contact Addresses
1.1 Manufacturer's address
nVent Hoffman
2100 Hoffman Way
Anoka
MN 55303,
USA
1.2 Service addresses
AFTERMARKET SUPPORT - REGIONAL LOCATIONS
NORTH AMERICA
2100 Hoffman Way
Minneapolis, Minnesota 55303-1745 USA
EUROPE
Langenalber Straße 96-100
75334 Staubenhardt, Germany
Tel: +49 (0) 7082 794-0
1.3 Making contact
Please keep the following details ready (see the type plate of the unit) when
contacting us (e.g. for spare part orders, warranty claims, etc.):
•Product name
•Serial no.
NOTE
If necessary, enter the information, which is stated on the type plate of the unit,
into the table.
Name of the unit:
(Product Name)
……………………………………
Serial number:
(Serial No.)
……………………………………
Part number:
(Part No.)
……………………………………
Year of manufacture:
(Year of Manufacture)
……………………………………
About this manual
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2 About this manual
2.1 Use and storage
NOTE
Prior to performing any work on the unit/system, read the instruction manual.
The following points must be noted:
•The instruction manual is an integral part of the unit/system and must be
available to the operating personnel at the unit/system at all times.
•The instruction manual is indispensable for the safe start-up, operation and
maintenance of the unit/system in line with its intended purpose.
•The instruction manual applies solely to the product that is stated on the
cover sheet.
•We reserve the right to change the instruction manual due to further
technical developments.
•This instruction manual is part of the scope of supply.
•The instruction manual shall apply from the transport phase up to the final
disposal and must be absolutely observed.
•Keep the instruction manual in a place where it is readily accessible at all
times. It must be complete, remain with the machine and must be available
to all authorised persons.
•Maintain the instruction manual in a clearly legible state at all times.
•Hand over the instruction manual along with the device if it is resold.
•The unit/system may present unavoidable residual risks to persons and
property. This is why the instruction manual must be read, understood and
strictly complied with for all types of tasks by the personnel prior to
commencing any work. In addition, any person who works on or with the
unit/system in any way must be instructed and familiar with the potential
hazards.
•This instruction manual is solely intended for trained and authorised
personnel.
•It is the operator's responsibility to ensure that the manual is read and
understood by all operating personnel before starting work.
•The illustrations in this manual are for providing a basic understanding and
may differ from the actual unit/system.
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2.2 Target audience
When working with the unit/system, the various tasks must be assigned to specific
groups of persons.
Depending on the location of use, the necessary qualification of the personnel may
be subject to varying statutory provisions. The operator must ensure compliance
with the relevant laws. Unless regulated by law, the following list is used to define
the permissible personnel and their minimum qualification.
The following points must be noted:
•Any work on the unit/system must be performed by qualified and instructed
personnel.
•The personnel must have knowledge of the relevant standards, provisions,
accident prevention regulations and operating conditions.
•The personnel must be instructed and trained for the tasks that need to be
performed.
•The personnel must be able to identify and avoid any potential hazards.
Person
Task
Qualification
Lifcycle phase
Qualified
personnel for
transporting loads
Lifting/lowering and transport
of the system
Proven experience in the
handling of suspended loads
and in the securing of loads
Transport, installation,
disassembly and
removal
Qualified
personnel
(mechanics)
Mechanical work during: start-
up, elimination of faults and
malfunctions, maintenance
and shut-down
Training as an industrial
mechanic or an equivalent
professional qualification
Start-up, maintenance,
elimination of faults
and malfunctions,
shut-down,
disassembly and
removal
Qualified
personnel (trained
electricians)
Electrical work
Specialised electrical training
or an equivalent professional
qualification
Qualified
personnel
(refrigeration
specialists)
Work on the refrigeration unit
Training as a refrigeration
specialist or an equivalent
professional qualification
Qualified
personnel
(machine
operators and
fitters)
Operation and set-up of the
system
Person who has been trained
and instructed by the operator
based on the instructions for
use
Start-up, operation,
maintenance,
elimination of faults
and malfunctions
Qualified
personnel
(disposal
specialists)
Proper disposal of the system
Knowledge about the disposal
regulations applicable on site
Shut-down,
disassembly and
removal, disposal
Qualified
personnel (safety
specialists)
Implementation of the
applicable safety regulations
Knowledge about the safety
regulations applicable on site
All phases
Others (e.g.
visitors)
Site inspection
Person under the supervision
of a safety specialist
-
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2.3 Explanation of the various notes
The warning notes are preceded by signal words indicating the severity of the
hazard.
Compliance with the warning notes is imperative in order to avoid accidents,
injuries and damage to property.
Explanation of warning notices used in this manual:
DANGER
Short description of danger
The signal word DANGER identifies an immediately threatening danger.
Any non-adherence will result in severe injuries or death.
WARNING
Short description of danger
The signal word WARNING identifies a potential danger.
Any non-adherence may result in severe injuries or death.
CAUTION
Short description of danger
The signal word CAUTION identifies a potential danger.
Non-compliance may result in minor to medium injuries.
NOTICE
Short description
The signal word NOTICE identifies a potential risk of damage to property.
Non-compliance may cause damage to the unit or system.
NOTE
The signal word NOTE identifies further information on the unit or about its use.
Note concerning the protection of the environment
The keyword Note concerning the protection of the environment indicates
information concerning the protection of the environment.
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2.4 Seal of quality
The seal of quality "gdsCert" of gds GmbH (service provider for technical
documentation) is a proof of quality for technical documentation.
With the "gdsCert" seal of quality, the manufacturer provides proof of the high
standard of the technical documentation and of the compliance with the relevant
standards and guidelines.
The seal of quality "ecoDoc" is used for the certification of instruction manuals
under ecological points of view. It is listed under the "green safety instruction".
With the "ecoDoc" seal of quality, the manufacturer indicates that the product
documentation includes notes concerning the potential ecological hazards
resulting from operating errors or other tasks that are performed with or on the
product. Companies thereby make a contribution to the protection of the
environment.
The seal of quality "ecoDoc" provides a proof of compliance with the relevant
standards and guidelines and/or of the ecological approach concerning the
contents of the documents.
2.5 Further applicable documents
In addition to this instruction manual, there are further applicable documents that
also need to be taken into consideration. These are usually the following
documents:
•spare parts catalogues/lists
•electrical documentation
•safety data sheets
•project drawings
•documentation of third-party manufacturers
NOTE
Information concerning the actual documents that are part of the product-
accompanying documents can be found in the specifications of the order
confirmation.
Terms of warranty
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3 Terms of warranty
Damage or Loss in Transit - Delivery of goods to a carrier at Seller's plant or
other shipping point shall constitute delivery. Regardless of freight payment, all risk
of loss or damage in transit shall pass to Buyer at that time. Buyer shall make
claims for loss or damage to goods while in transit against the carrier. Seller will
assist Buyer in securing satisfactory adjustment of such claims if notified within 15
days of receipt. Terms are F.O.B. point of origin.
Warranties - For all products listed herein, Seller warrants goods manufactured by
it to be free from defects in materials and workmanship for a period of (1) year from
date of shipment from its plant. If within such period any such goods shall be
proven to Seller's satisfaction to be defective, then and in that event such goods
shall be repaired or replaced at Seller's option. Such corrections or replacement of
defective goods shall constitute a fulfillment of all liabilities in respect to such
goods. Under no circumstances will credit be allowed for unauthorized rework on
any materials. Connectors, hoses and barb fittings cannot be removed for any
reason, if removed warranty is null and void. THE FOREGOING WARRANTIES
ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED
WARRANTIES WHATSOEVER, INCLUDING BUT NOT LIMITED TO IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.
EXCLUSIONS: Seller’s obligations do not cover defects or losses caused by
normal wear and tear or deterioration, defects in or damage to any goods resulting
from improper installation, accident, shipping or any utilization, maintenance, repair
or modification of the goods that is not consistent with Seller’s instructions or the
designed capabilities of the goods, the removal or re-installation of the goods, or
related non-Seller supplied products for repair or replacement unless such
installation is required by Seller’s design or included on original invoice from Seller,
or that, in Seller’s sole judgment, the performance or reliability thereof is adversely
affected thereby, or which is subjected to abuse, mishandling, misuse or neglect or
any damage caused by connections, interfacing or use in unforeseen, unintended
or detrimental environments, nor shall Seller be liable for any damages or loss,
including bodily injury or death, as a result of the aforementioned causes of loss
and/or defects. Seller does not warrant that the operation of the goods will be
uninterrupted or error-free products. Seller assumes no liability for non-Seller
supplied products or services furnished by Buyer to its customer nor does this
warranty cover any copy of or update to any user manual for the goods. Buyer is
fully and solely responsible for its selection of the goods purchased hereunder, and
Seller shall not be liable for Buyer’s failure to select goods that ultimately do not
meet Buyer’s application needs, or any damages resulting therefrom. Furthermore,
Buyer is solely and fully responsible for selecting goods that meet all applicable
legal and regulatory requirements and/or required classifications for its desired use
and application, and Seller shall not be responsible for any loss or damage,
monetary or otherwise, if the goods purchased by Buyer hereunder ultimately do
not meet such requirements and/or classifications.
Limitation of Liability - Seller’s total liability shall not exceed the price paid by
Buyer under the Agreement for the goods giving rise to the claim. Under no
circumstances shall Seller be liable for special, incidental, indirect, delay or
liquidated, punitive or consequential damages for any reason. Seller assumes no
obligation or liability for technical advice given or not given, or results obtained.
Terms of warranty
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Buyer Warranty Responsibilities - Buyer must adhere to all requirements in the
Water Quality Statement guidelines provided by the Seller. Seller’s Warranty is
conditional upon Buyer adhering to such requirements.
Limited Cross Vendor Compatibility - Buyer shall ensure that only Products of
Seller, including Coolant Distribution Units, Rack Manifolds, Rack Manifold Hoses,
Reservoir Pump Units (RPU’s), Liquid Cooling Coils and Heat Rejection Coils are
operating together on the Secondary Side (Server Side) of the liquid loop. If Buyer
shall fail to do so, the period of Seller's Warranty shall be reduced to 30 days from
the date of invoice.
Buyer Inspection and Use - Seller is expected to examine, inspect and follow
RackChiller CDU800 User Manual for all processes involving the CDU. Failure to
follow the RackChiller CDU800 User Manual will render the warranty null and void.
Maintenance - Non-compliance with the maintenance intervals may lead to
damage to the unit or system, and to the partial or complete loss of warranty.
•Only use genuine spare parts by nVent.
•Only use media that have been approved by nVent and the machine
manufacturer.
•Comply with the specified maintenance intervals.
Terms of Sale can be found at http://nVent.com/hoffman/terms-of-sale
Warranty can be found at http://hoffman.nVent.com/warranty-information
Safety
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4 Safety
4.1 General information
NOTE
Every person who is ordered to work on the unit/system must have read and
understood these instructions and, in particular, the "Safety" chapter.
If necessary, in-house instruction should be provided, taking into account the
technical qualifications of the personnel concerned.
The "Safety" chapter provides an overview of all of the important safety aspects for
the optimum protection of the personnel and for the safe and trouble-free use of
the unit/system from the transport up to the operation and disposal.
The unit/system has been designed and manufactured in line with the current state
of the art and is in compliance with the recognised safety regulations and
standards.
The unit/system is safe to operate.
Non-compliance with the instructions and safety notes in this instruction manual
may lead to substantial hazards to persons and damage to the unit/system.
Only use specialised personnel who are familiar with the fundamental health and
safety rules and regulations and who have been briefed about the handling of the
unit/system.
Certain components have additional warning plates or labels to ensure safe
operation. Plates or labels must not be covered or removed.
Compliance with the safety instructions is mandatory. The observation of these
instructions is essential for ensuring safety.
The relevant accident prevention regulations as well as other generally recognised
regulations concerning workplace health and safety must be observed.
Safety
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4.2 Intended use
The unit or the system is intended solely for the application outlined in the
“Description/Overview” section and only with the components supplied and
approved.
Using the unit for purposes other than those mentioned above is considered
contrary to the intended use. The manufacturer cannot be held liable for any
damage resulting from such use. The risk of such misuse lies entirely with the user.
The product-specific documentation can only refer to the intended use of the
unit/system on which the order is based.
The instructions cannot cover any specific situations arising from special local
conditions or special applications that the manufacturer was not aware of. In this
case, the operator must ensure the safe operation of the unit/system or shut the
unit/system down until appropriate measures for the safe operation have been
coordinated or implemented in consultation with the manufacturer or other
competent authorities.
4.3 Safety of personnel
Knowledge of, and compliance with, the present content is a prerequisite for the
protection of persons against danger and for the avoidance of errors and mistakes.
Tasks (e.g. maintenance and service tasks) should be performed only by suitably
qualified persons who are familiar with these tasks and who have been informed
concerning the potential danger.
Avoid any working practice that:
•puts the health and safety of the user or third parties at risk,
•is detrimental to the unit or system or other material assets,
•impairs the safety or functionality of the unit or system,
•does not comply with the safety instructions.
In addition:
•Always wear personal protective equipment when working on the
unit/system.
•Comply with the relevant accident prevention regulations.
•Comply with the occupational health regulations.
•Comply with the generally recognised safety rules.
Safety
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There is an increased risk of injury if the safety devices and guards are disabled.
Never dismantle or disable any safety devices or guards.
•Check the safety devices and guards daily for correct operation.
•Report any faults and defects concerning the safety devices and guards to
the customer service without delay.
•Keep covers (e.g. panels, shields, housings) closed during operation.
•Perform repairs of the pipe systems and tanks only when the system is
depressurised.
•Observe the respective supplier's safety data sheets and disposal
instructions as well as all of the local safety regulations when using
chemicals.
•When handling process fluids (e.g. oils, greases and other chemical
substances), comply with the supplier's specifications and safety information
for the respective product.
•Wear personal protective equipment.
Failure to wear personal protective equipment may cause serious injuries or death.
•Wear the prescribed personal protective equipment, e.g. hearing protection,
eye protection, safety shoes, helmet, protective clothing, safety gloves, and
respiratory protective equipment.
•Long hair must be tied back. Do not wear any jewellery or loose-fitting
clothes. There is a risk of injury if these items get caught in or are pulled into
any moving parts of the machinery.
•Ensure that there are no unauthorised persons in the danger zone.
Any safety devices that have been removed for set-up, maintenance, or repair
purposes must be reinstalled and checked for correct operation immediately upon
the completion of the maintenance and repair work.
In the above case, particular attention must be paid to the general accident
prevention and safety regulations.
There is a risk of damage to property if the unit/system is operated improperly.
•Comply with the description of any add-on parts or ancillary equipment (if
included).
•See also the supplier documentation or the separate documentation
provided by the third-party suppliers.
Safety
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4.4 Transport and installation/start-up
There is an increased risk of injury for persons who perform tasks for which they
are neither qualified nor trained.
Only persons who are familiar with the tasks, who have been informed about the
associated hazards have the necessary qualifications are authorised to transport
the unit.
•Never work or stand under suspended loads. There is a risk of fatal injuries
from falling loads.
•Transport tasks may only be performed by qualified and authorised persons
and in compliance with the safety instructions!
•The shipping company and the manufacturer must be informed immediately
in writing about any damage that is noticed after the delivery. The start-up of
the unit/system must be suspended, if necessary.
•Use only suitable lifting devices, transport equipment, load handling
attachments and lifting accessories and ensure that they are in a perfect
technical state and have a sufficient load-bearing capacity.
•Take the attachment points and centre of gravity of the load into
consideration.
•Do not add any additional attachment points to the units/systems by welding,
flame cutting or drilling. There is a risk of cracking due to the notch effect of
the weld seam or flame-cutting spot or bore.
•When transporting the unit, observe the instruction labels on the unit (if
provided).
•Transport the unit only when it is empty.
•If the unit/system needs to be replaced, fasten and secure it thoroughly on
the lifting devices.
•The banksman must be within the range of vision of the operator or have
voice contact with the operator.
•Block and mark the transport routes so that unauthorised persons cannot
reach the hazard area!
•Always secure the transport route with the aid of a third person!
NOTE
Comply with the general accident prevention and safety regulations.
Safety
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4.5 Operation
•Operation is permissible only if all of the components are in a perfect
technical state and proper operational condition and if they are used in line
with the intended purpose.
•Avoid any operation that compromises the safety of the unit/system.
•The operator must ensure that unauthorised persons cannot work on the
machine.
•Prior to switching the unit/system on, the operator must ensure that no
persons are put at risk by starting the machine.
•During operation, the entire hazard area must be observed or closed off so
that no one can enter this area without being noticed.
•Do not leave the unit/system unattended during operation.
•Use the unit/system only if all of the guards and safety devices are present
and fully functional.
•The operator must ensure a clean and clearly arranged workplace at and
around the unit/system by issuing corresponding instructions and performing
checks.
•Observe the controls and indicators during operation.
4.6 Maintenance
The operator must ensure that the unit/system and its safety devices and guards
are kept in a functional state. The control devices as well as the safety devices and
guards must be checked in terms of their effectiveness.
Only specialised and trained personnel are authorised to perform maintenance,
repairs and overhauls.
If safety devices or guards need to be removed for maintenance, overhauls and
repairs, they must be reinstalled and checked for correct operation immediately
after the completion of the tasks.
4.7 Operating faults
Malfunctions of the unit/system may be caused by a fault that can be localised and
eliminated with the aid of the "Troubleshooting" section.
•Assign the associated tasks to the corresponding specialised personnel.
•If the fault cannot be eliminated, contact the service of the manufacturer.
NOTE
See the "Contacts" section.
Safety
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4.8 Use of cleaning agents
No material, i.e. neither metals nor plastics, can be certified to be completely
chemically resistant.
Due to the large number of available additives and cleaning agents, the recipes of
which are subject to change, the manufacturer cannot assume any liability for
damage attributable to the influence of such substances.
Damages through cleaning agents!
Cleaning agents can have an effect on devices and measuring equipment and can
destroy materials and harm the environment.
Please observe the following points:
•Cleaning agents must not enter system circuits.
•Use cleaning agents economically and for specific objectives.
•Keep the application duration to a minimum, especially for plastic parts and
seals.
•Excess cleaning agent has to be removed and parts have to be wiped dry or,
if possible, rinsed with clear water.
•Do not use any flammable cleaning agents (unless explicitly specified by the
manufacturer).
•Do not use any cleaning agents containing silicone or chlorine (unless
explicitly specified by the manufacturer).
In case of doubt, the user should perform a test to see whether the detergents /
chemicals are compatible with the materials used.
The materials used for this product have been selected on the basis of several
years of field experience of these products worldwide. If the product is used as
intended and if the information provided in the "Safety" chapter is observed, this
product offers very good performance and a long service life.
Note concerning the protection of the environment
The excessive use of cleaning agents has a negative impact on the environment.
•Use environmentally friendly cleaning agents.
•Use cleaning agents economically and for specific objectives only.
•Do not spill any cleaning agents.
•Keep the containers tightly sealed. Empty containers or containers that are
in use must also be sealed upon the completion of the task.
•Used cleaning agents and the associated containers, tanks, etc. must be
disposed of in an environmentally sound manner and in compliance with
the local and national rules and regulations.
Safety
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4.9 Use of chemicals
Health hazard!
The use of chemicals can present a health hazard.
•When handling chemicals, always wear protective gloves, eyewear, and
clothing.
•Observe the safety data sheets.
Damage due to aggressive chemicals!
Aggressive chemicals can damage the components.
•Do not use any chemicals (e.g. for cleaning) that are aggressive to the
components.
•Observe the relevant material safety data sheets of the suppliers.
Note concerning the protection of the environment
The improper disposal of chemicals (e.g. additives) has a negative impact on the
environment.
•Chemicals must not be disposed of as household waste and it must be
ensured that they are not released into the sewage system or soil.
•Wear suitable protective equipment (gloves, eye protection) when
performing disposal tasks.
•Chemicals must be disposed of separately (e.g. as special waste if
applicable) and supplied separately to the recycling centres.
•Comply with the safety data sheets and also with the applicable national
and local rules and regulations.
4.10 Residual risks
Any unavoidable, design-based residual risks (if present) are mentioned and
described in this instruction manual in the corresponding sections.
Safety
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4.11 Safety labels
Notes and symbols on the equipment/system, e.g. safety labels and plates, must
be absolutely complied with. Do not remove them and ensure that they are fully
legible.
NOTE
Destroyed or illegible marks/symbols must be replaced immediately.
Warning –Electrical hazard.
Only specialised personnel is authorised to perform work on the
electrical system.
Negligence can lead to electric shock.
•Comply with the information in the "Safety" section.
•Wear protective clothing.
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