KNF C 900 Manuale utente
KNF 301425-301429 03/14
Translation of original Operating Instructions, nglish Keep for future reference!
Operating Instructions
Read and observe these Operating Instructions!
Recirculating Cooler
C 900
KNF Neuberger GmbH
Alter Weg 3
79112 Freiburg
Germany
Tel. +49 (0)7664 / 5909-0
Fax +49 (0)7664 / 5909-99
-mail: [email protected]
www.knf.de
Contents Page
1. About this document .................................................................. 3
2. Intended use .............................................................................. 4
3. Operator responsibility – Safety precautions ............................ 5
4. Handling .................................................................................... 6
5. Technical data ........................................................................... 8
6. Safety precautions ................................................................... 11
7. Transportation, setup, and connection .................................... 14
8. Operating and functional elements ......................................... 17
9. Initial start-up ........................................................................... 19
10. Protective features .................................................................. 25
11. Troubleshooting guide / Alarm messages ............................... 26
12. Cleaning / repairing the unit .................................................... 28
13. Accessories ............................................................................. 30
14. Returns .................................................................................... 31
15. Health and safety clearance and decontamination form ......... 32
Recirculating Cooler C 900 About this document
Translation of original Operating Instructions, nglish, KNF 301425-301429 03/14 3
1. About this document
The Operating Instructions are an integral part of the recirculating
cooler.
Carefully read the Operating Instructions before bringing the
recirculating cooler into operation.
Keep the Operating Instructions readily accessible at all times.
Pass on the Operating Instructions to the next owner.
Compliance with the Operating Instructions
is essential for safe
and reliable operation of the recirculating cooler. Failure to
observe the Operating Instructions may result in damage or
injury.
Intended use Recirculating Cooler C 900
4 Translation of original Operating Instructions, nglish, KNF 301425-301429 03/14
2. Intended use
The KNF Recirculating Cooler is designed to control the tempera-
ture of certain liquid media.
xternal pump connections enable constant-temperature cooling of
applications in an external loop.
This recirculating cooler is operated via the splash-proof mem-
brane keypad. Microprocessor technology enables adjustment,
display, and storage of the setpoint through the L D temperature
display.
PID1
The PID temperature regulation is used to withdraw heat from the
heat transfer liquid by means of the cooling apparatus and to
automatically regulate the required need.
NOTE
Health hazards associated with the heat transfer
liquid
KNF recirculating coolers are not intended for
direct temperature control of food and luxury ar-
ticles, pharmaceutical products, or medical de-
vices.
Direct temperature control means:
Unprotected contact of the object with the bath medium (heat
transfer liquid).
Recirculating Cooler C 900 Operator responsibility – Safety precautions
Translation of original Operating Instructions, nglish, KNF 301425-301429 03/14 5
. Operator responsibility – Safety precau-
tions
The products of KNF Neuberger GmbH ensure safe operation
when installed, operated, and maintained according to common
safety regulations. This section explains the potential dangers that
may arise when operating the recirculating cooler and also speci-
fies the most important safety precautions to preclude these dan-
gers as far as possible.
The operator is responsible for the qualification of the person-
nel operating the units.
Make sure that the persons who operate the recirculating
cooler are trained in this work.
The personnel operating the units should be regularly instruct-
ed about the dangers involved with their job activities as well
as measures to avert these dangers.
Make sure all persons tasked with operating, installing, and
maintaining the unit have read and understood the safety in-
formation and Operating Instructions.
When using hazardous materials or materials that could be-
come hazardous, the recirculating cooler may be operated only
by persons who have complete familiarity with these materials
and the recirculating cooler. These persons must be fully
aware of possible risks.
If you have any questions concerning the operation of your unit or
the information in this manual, please contact us (see final page for
telephone number)!
Handling Recirculating Cooler C 900
6 Translation of original Operating Instructions, nglish, KNF 301425-301429 03/14
4. Handling
Avoid strikes to the housing, vibrations, damage to the keypad
(keys, display), and heavy contamination.
Make sure the product is regularly checked for proper condition
(depending on the conditions of use).
Regularly check (at least every 2 years) the condition of the
mandatory, warning, prohibition and safety labels.
Make sure that the mains power supply has low impedance to
avoid any negative effects on instruments being operated on
the same mains.
This unit is designed for operation in a controlled electromag-
netic environment. Accordingly, transmitting devices such as
mobile telephones shall not be used in the immediate vicinity.
Other devices with magnetically sensitive components, such as
a monitor, may be influenced by magnetic radiation. We rec-
ommend maintaining a minimum distance of 1 m.
Permissible ambient temperature: max. 40 °C, min. 5 °C.
Permissible relative humidity: 50% (40 °C).
Do not store the unit in an aggressive atmosphere. Protect the
unit from contamination.
Do not expose the unit to sunlight.
4.1. Appropriate operation
Only qualified personnel are authorized to perform configuration,
installation, maintenance and repairs of the recirculating cooler.
The operator of the cooler must be trained by technical personnel.
4.2. Use
DANGER
Ignition of potentially explosive mixtures
The unit is not for use in a potentially explosive
atmosphere.
Special materials specifications (heat transfer liquids) must be
observed in order to comply with the intended use. Neither corro-
sive nor corrosive-acting heat transfer liquids may be used. Ob-
serve all warnings for the used materials (heat transfer liquids) and
the respective instructions (safety data sheets).
Provide for adequate ventilation at the place of installation (see
Page 14).
When using hazardous materials or materials that could become
hazardous, the operator must affix the enclosed safety labels (1 +
2) to the front of the unit so they are highly visible:
Recirculating Cooler C 900 Handling
Translation of original Operating Instructions, nglish, KNF 301425-301429 03/14 7
1
Warning of a danger area.
Attention!
Please observe the documentation. (Operating
Instructions, safety data sheet)
2a
or
Carefully read the user information prior to
switching on the unit.
Area of applicability: U
2b
Carefully read the user information prior to
switching on the unit.
Area of applicability: United States, NAFTA
Tab. 1
4. . Disposal
This unit contains the refrigerant R134a – at this time considered
not to have any negative effects on the ozone layer. However,
during the long operating period of the unit, disposal regulations
may change. Therefore, only qualified personnel shall perform
disposal.
Area of applicability: EU nations
See the current official journal of the uropean Union – W
directive.
Directive of the uropean Parliament and of the Council on Waste
lectrical and lectronic quipment (W ).
This directive requires electrical and electronic equipment marked
with a crossed
-out trash can to be disposed of separately in an
environmentally friendly manner.
Please contact an authorized disposal company in your country.
Disposal with household waste (unsorted waste) or through similar
facilities for collecting community waste is not permitted!
Technical data Recirculating Cooler C 900
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5. Technical data
5.1. C 900
Recirculating Cooler
Working temperature range -10 °C to +40 °C
Temperature stability ±0.5 °C
Temperature selection: digital
locally via keypad L D DISPLAY
Temperature indication: L D DISPLAY
Adjustment and display
resolution
0.1 °C
Temperature control PID 1
Working temperature sensor
Pt 100
High temperature cut-off 85 °C - fixed value
Low-liquid-level protection Float switch
Circulating pump
Flow rate [l/min]
max. at 0 bar
15
Pressure [bar]
max. at 0 liter
0.35
Fill level indicator Sight glass
Fill volume [liter]
from ... to
1.7 ... 2.6
Dimensions [mm] (WxDxH) 240 x 400 x 520
Weight [kg] 27.0
Permissible ambient tempera-
ture range [°C]
5 ... 40
Permissible return tempera-
ture [°C]
max. 80
single-stage / air-cooled refrigeration compressor
Refrigerant R134a
Cooling capacity [°C/W]
at 115 V / 60 Hz
at 230 V / 50 Hz
Medium: Water-glycol mixture
60
10
;
90
5
;
180
0
;
210
5
;
220
10
;
240
15
;
250
20
−
−
+
+
+
+
Electrical data
Power supply 230 V / 50 Hz 207-253 V / 50 Hz
Operating current [A] (at 230 V) 3.0
Power supply 115 V / 60 Hz 115 V / 60 Hz
Operating current [A] (at 115 V) 4.4
Tab. 2
All measurements taken at rated voltage and frequenc
Ambient temperature 20 °C
Recirculating Cooler C 900 Technical data
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5.2. Warning and safety precautions
Warning and safet precautions
High temperature cut-
off, fixed value
85 °C
Low-liquid-level protec-
tion
Float switch
Alarms optical + audible (permanent)
Overload protection for cooling machine and pump motor
Classification according
to DIN 12876-1
Class I
Tab. 3
Ambient conditions according to EN 61 010-1:
For indoor use only.
Up to 2000 m elevation – Standard zero
Ambient temperature: +5 ... +40 °C
Humidity:
Max. relative humidity 80% for temperatures up to +31 °C,
linear decrease down to 50% relative humidity at a tem-
perature of +40 °C
Voltage fluctuations of ±10% are permissible.
The recirculating cooler meets the safety stipulations of Directive
2004/108/ C for electromagnetic compatibility, Directive
2006/42/ C for machines, and Directive 2011/65/ U (RoHS2). The
following harmonized standards are fulfilled:
N 61010-1
N 61010-2-010
N 61326-1
N 378-1/2/3/4
The recirculating cooler complies with the following according to
I C 664:
Protection class I
Overvoltage category II
Contamination level 2
DANGER
Ignition of potentially explosive mixtures
The unit is not for use in potentially explosive
atmospheres.
MC requirements:
This unit is an ISM device of Group 1 (using high frequency for
internal purposes) and is categorized in Class A (industrial and
commercial field).
Standards
Technical data Recirculating Cooler C 900
10 Translation of original Operating Instructions, nglish, KNF 301425-301429 03/14
5. . Materials used on liquid-contacting parts
Description Material
PVC tube
(liquid level indicator)
PVC
Plug PA
Reservoir, all components 1.4404, 1.4301, 1.4435
Screw plug 1.4571
Profile gasket Silicone, white
Upper filler neck PVC
Stopper POM
O-ring CR11-70 (Chloroprene rubber)
Motor mounting plate
Motor plate 1.4301
Pump 1.4301, 1.4401, PPS (Rytone)
Sensors 2xPt100 metal
Installation
1.4571
Float switch 1.4301, PP
Hose fitting CuZn39Pb3 (nickel plated)
Tab. 4
Indice
