UM_NX-W_00_05_19_ML
EN
MITSUBISHI ELECTRIC HYDRONICS & IT COOLING SYSTEM S.p.A.
27
Translation of the original instructions
1
DOCUMENTATION
In addition to this manual, the following documents are delivered with the unit:
•
declaration of conformity
•
technical bulletin
•
dimensional and lifting drawings
•
cooling circuit/hydraulic diagrams
•
wiring diagrams
•
manual of the electronic controller
Before carrying out any operation, make sure that you have read and understand all the documents in the list.
2
GUARANTEE
2.1
Summary of the terms of the guarantee
The equipment supplied by Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A. (MEHITS) is guaranteed for 12 months from the date of initial start-up but not more than
18 months from the date of invoicing. The date of initial start-up is considered to be that indicated on the relative “Start-up Form 1” contained in the “Machine maintenance
logbook”, fully filled in and promptly sent to MEHITS.
The guarantee is only valid if the installation regulations (both those issued by MEHITS and those dictated by current practice) have been respected and if the “Start-up Form”
has been fully filled in and sent to MEHITS, for the attention of the After-Sales Service.
The guarantee covers flaws and defects reported within eight days of their being found. Furthermore, the guarantee will only remain valid on condition that the customer stops
using the equipment as soon as a defect is found.
The guarantee is considered valid only if the initial start-up was carried out by a Service Centre authorised by MEHITS.
The guarantee is valid if regular maintenance of the equipment has been properly recorded in the “Machine maintenance logbook” located inside the control panel.
The guarantee covers replacement of parts which are found to be faulty.
MEHITS shall not be liable for any on-site handling costs (cranes, dismantling pipes, etc.) required to replace equipment such as compressors, heat exchangers and fans, nor
for the travel and accommodation costs of its technicians for on-site operations.
2.2
Receipt of the unit
When the unit is received the client must check that there is no evident damage and no parts are missing. Otherwise, a claim for damages or non-delivery must immediately be
sent to the shipper, reporting conditional acceptance on the bill. If the damage is conspicuous, a photographic record must also be forwarded.
2.3
Performance of MEHITS units
MEHITS units are factory tested according to strict internal procedures. Performance tests can only be carried out on the system if the same conditions found in the test rooms
are reproduced and maintained (the same constant load, temperature and flow rates to the heat exchangers).
2.4
Manual reset of the alarms
Warn a technician of any alarm that may have appeared on the unit.
If an alarm should go off, the unit must not be reset manually until the cause has been checked out
and removed. Repeated manual resets can render the guarantee null and void.
2.5
Useful life
In normal operating conditions, the unit is expected to have a lifetime of 10 years if it is properly serviced as described in chapter 9. After that period, the unit should be overhauled
by technicians authorised by MEHITS.
3
SAFETY REGULATIONS
3.1
Foreword
This product is a complex machine. During installation, operation, maintenance and repairs, people and objects might be exposed to risks associated with certain conditions or
components such as, but not limited to: refrigerant, oils, moving mechanical parts, pressure, heat sources, electrical power. Each of these elements might result in damage to
objects and possibly serious personal injury or even death. The people who operate the product have the obligation and responsibility to identify and recognise dangers and to
protect themselves and always proceed in safety.
This product and the relative documents, including this manual, are intended for people who have received independent training and have been taught how to work in a correct
and safe manner. Before handling this equipment in any way, it is essential that the personnel involved have read and understand all the manuals and all the other reference
material. The personnel must also be familiar with and observe the standards that apply to the work in hand.
Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A. S.p.A. and its TECHNICIANS (as described in this manual) decline all responsibility for non-compliance
with safety regulations that were in force at the moment of installation.
Do not tamper with the unit: any unauthorised intervention may result in risks to the safety and health of persons, as well as material damage. Any kind of tampering
will also render the guarantee null and void.
3.2
Definitions
•
Owner
:
Legal representative of the company, a body, or a natural person who owns the plant where the MEHITS unit is installed and is responsible
for checking compliance with all the safety rules in this manual and the national regulations in force.
•
Installer:
Legal representative of the firm that the owner has put in charge of positioning and connecting hydraulically, electrically, etc. the MEHITS
unit to the plant: he/she is responsible for the handling and correct installation in conformity with what is indicated in this manual and the national regulations in
force.
•
Operator:
Any natural or legal person who has effective control over the technical operation of the equipment and air-conditioning systems. This is the
person who, in case of necessity (alarms, failures, etc.), will have to request the intervention of a technician. A member state of the European Community can, in
very specific circumstances, consider the owner responsible for the obligations of the operator.
•
Maintenance person
: The person authorised by the owner to carry out on the MEHITS unit all operations of regulation and checking expressly indicated in this
manual, and which must be strictly followed. His/her work will be limited only to what is clearly allowed.
