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Index
1
Safety
1.1 Importance of the manual ...................................................1
1.2 Warning signals ...................................................................1
1.3 Safety instructions ...............................................................1
1.4 Residual risks ......................................................................1
2
Introduction
2.1 Transport ..............................................................................2
2.2 Handling ..............................................................................2
2.3 Inspection ............................................................................2
2.4 Storage ................................................................................2
3
Installation
3.1 Operating space ..................................................................2
3.2 Foundation ...........................................................................2
3.3 Versions ...............................................................................2
3.4 Water circuit .........................................................................2
3.5 Electrical circuit ...................................................................3
3.6 Water-cooled version (W) ....................................................3
4
Control
4.1 Control panel .......................................................................4
4.2 Starting the chiller ................................................................4
4.3 Visualization probes ............................................................5
4.4 Visualization of digital outputs/analog inputs ......................5
4.5 Parameter settings ..............................................................5
4.6 Direct parameter (DIrE) ........................................................5
4.7 Service parameters (USER) .................................................6
4.8 Chiller operation ..................................................................7
4.9 Alarms management ............................................................7
4.10 Automatic restart ...............................................................7
5
Option
5.1 Precision Control
(Control pCOM) ..........................................................................8
5.2 Precision Control + Low ambient temp.(-10C°)
(Control pCOM) ..........................................................................8
5.3 Low ambient temp. L2 (-20/30 C°)
(Control pCOM) ..........................................................................8
6
Maintenance
6.1 General instructions .............................................................9
6.2 Preventive maintenance ......................................................9
6.3 Refrigerant ...........................................................................9
6.4 Dismantling ..........................................................................9
7
Troubleshooting
8
Appendix
English
1
Safety
1
1.1 Importance of the manual
• Keep it for the entire life of the machine.
• Read it before any operation.
• It is subject to changes: for updated information see the
version on the machine.
2
1.2 Warning signals
!
Instruction for avoiding danger to persons.
Y
Instruction for avoiding damage to the equipment.
2
The presence of a skilled or authorized technician is
Z
required.
There are symbols whose meaning is given in the
,
para. 7.
1.3 Safety instructions
4
!
Every unit is equipped with an electric disconnecting
switch for operating in safe conditions. Always use this device
in order to eliminate risks maintenance.
!
The manual is intended for the end-user, only for opera-
tions performable with closed panels: operations requiring
opening with tools must be carried out by skilled and qualifi ed
personnel.
Y
Do not exceed the design limits given on the dataplate.
! Y
It is the user's responsibility to avoid loads different
8
from the internal static pressure. The unit must be appropriately
protected whenever risks of seismic phenomena exist.
Only use the unit for professional work and for its intended
purpose.
The user is responsible for analysing the application aspects for
product installation, and following all the applicable industrial
and safety standards and regulations contained in the product
9
instruction manual or other documentation supplied with the
unit.
Tampering or replacement of any parts by unauthorised per-
sonnel and/or improper machine use exonerate the manufac-
turer from all responsibility and invalidate the warranty.
10
The manufacturer declines and present or future liability for
damage to persons, things and the machine, due to negligence
of the operators, non-compliance with all the instructions given
in this manual, and non-application of current regulations re-
garding safety of the system.
The manufacturer declines any liability for damage due to
PCW420-650
alterations and/or changes to the packing.
It is the responsibility of the user to ensure that the specifi ca-
tions provided for the selection of the unit or components and/
or options are fully comprehensive for the correct or foresee-
able use of the machine itself or its components.
IMPORTANT: The manufacturer reserves the right to modify
this manual at any time.
For the most comprehensive and updated information, the
user is advised to consult the manual supplied with the
unit.
1.4 Residual risks
The installation, start up, stopping and maintenance of the
machine must be performed in accordance with the information
and instructions given in the technical documentation supplied
and always in such a way to avoid the creation of a hazardous
situation.
The risks that it has not been possible to eliminate in the design
stage are listed in the following table.
part
residual
manner of
affected
risk
exposure
heat ex-
small cuts
contact
changer coil
fan grille
lesions
insertion of
and fan
pointed objects
through the grille
while the fan is in
operation
inside the
burns
contact
unit:
compres-
sor and
discharge
pipe
inside the
intoxi-
defects in the
unit:
cation,
insulation of the
metal parts
electrical
power supply
and electri-
shock,
lines upstream
cal wires
serious
of the electrical
burn
panel; live metal
parts
outside the
intoxica-
iire due to
unit:
tion, seri-
short circuit or
area sur-
ous burns
overheating of
rounding
the supply line
the unit
upstream of the
unit's electrical
panel
precautions
avoid contact, wear
protective gloves
ndo not poke
objects of any type
through the fan grille
or place any objects
on the grille
avoid contact, wear
protective gloves
adequate electrical
protection of the
power supply line;
ensure metal parts
are properly con-
nected to earth
sensure conduc-
tor cross-sectional
areas and the sup-
ply line protection
system conform to
applicable regula-
tions
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