BA Presto LH40

BA Presto LH40
Operating Manual
Highly Dynamic Temperature Control Systems
• with integrated programmer
LH 47
air cooled
LH 50
water cooled
JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: +1(610) 231-0250
Fax:
+1(610) 231-0260
info @ julabo.com
www.julabo.com
19532790-V1.doc
Print date: 28.12.12
Operating manual
Congratulations!
You have made an excellent choice.
JULABO thanks you for the trust you have placed in us.
This operating manual has been designed to help you gain an understanding of the operation and
possible applications of our circulators. For optimal utilization of all functions, we recommend that
you thoroughly study this manual prior to beginning operation.
1.953.2790-V1
12/12
Printed in Germany
Changes without prior notification reserved
Important: keep operating manual for future use
The JULABO Quality Management System
Temperature control devices for research and industry are developed,
produced, and distributed according to the requirements of
ISO 9001:2008.
Certificate Registration No. 01 100044846
Unpacking and inspecting
Unpack the unit and accessories and inspect them for possible transport damage. Damage should
be reported to the responsible carrier, railway, or postal authority, and a damage report should be
requested. These instructions must be followed fully for us to guarantee our full support of your
claim for protecting against loss from concealed damage. The form required for filing such a claim
will be provided by the carrier.
Lift the unit only with a crane (see pictures) using the lifting strands and the wooden crate .
The recessed grips on the side are not suited for this purpose!
2
TABLE OF CONTENTS
OPERATING MANUAL ..................................................................................................... 5
1.
1.1.
2.
INTENDED USE .................................................................................................. 5
Description ........................................................................................................... 5
OPERATOR RESPONSIBILITY – SAFETY INSTRUCTIONS ............................. 5
2.1.
Disposal ............................................................................................................... 7
2.2.
Technical specifications ....................................................................................... 8
2.3.
Cooling water connection .................................................................................. 12
OPERATING INSTRUCTIONS ........................................................................................ 13
3.
SAFETY NOTES FOR THE USER .................................................................... 13
3.1.
Explanation of safety notes ............................................................................... 13
3.2.
Explanation of other notes ................................................................................. 13
3.3.
Safety instructions ............................................................................................. 13
4.
4.1.
5.
OPERATING CONTROLS AND FUNCTIONAL ELEMENTS ............................. 16
The Presto Plus principle with closed external system....................................... 22
PREPARATIONS............................................................................................... 23
5.1.
Bath fluids.......................................................................................................... 23
5.2.
Tubing ............................................................................................................... 25
5.3.
Installation ......................................................................................................... 26
5.4.
Connect the external system ............................................................................. 26
5.5.
Cooling water connection LH 50 ........................................................................ 28
5.6.
Power connection .............................................................................................. 29
5.7.
Filling ................................................................................................................. 29
5.7.1.
Filling of external, closed systems .............................................................. 30
5.8.
Degasifying ........................................................................................................ 32
5.9.
Draining ............................................................................................................. 33
6.
6.1.
7.
OPERATING PROCEDURES............................................................................ 34
Switching on / Selecting the language ............................................................... 34
MANUAL OPERATION ...................................................................................... 35
7.1.
Start - Stop ........................................................................................................ 35
7.2.
Direct setting of the working temperature .......................................................... 36
7.3.
Settings in the SET menu .................................................................................. 36
7.3.1.
Setting the working temperature ................................................................. 36
7.3.2.
Warning functions ....................................................................................... 37
7.3.3.
Setting the pump pressure stage ................................................................ 38
7.4.
Setting the safety temperature (with shutdown function) ................................... 38
7.5.
Internal / external control ................................................................................... 40
3
Operating manual
8.
MENU FUNCTIONS .......................................................................................... 40
8.1.
Configuration ..................................................................................................... 42
8.2.
Control parameters ............................................................................................ 45
8.3.
Start of a profile ................................................................................................. 47
8.3.1.
Interrupting a profile .................................................................................... 49
8.4.
Integrated programmer ...................................................................................... 50
8.5.
Analog inputs/outputs ........................................................................................ 53
8.6.
Limits ................................................................................................................. 56
8.7.
Interface ............................................................................................................ 56
8.8.
Sensors ............................................................................................................. 57
8.9.
Pump ................................................................................................................. 58
9.
TROUBLESHOOTING GUIDE / ERROR MESSAGES ...................................... 59
10.
ELECTRICAL CONNECTIONS ......................................................................... 61
11.
REMOTE CONTROL ......................................................................................... 64
11.1. Setup for remote control .................................................................................... 64
11.2. Communication with a PC or a superordinated data system ............................. 65
11.3. List of commands .............................................................................................. 66
11.4. Status messages / error messages ................................................................... 69
4
12.
CLEANING THE UNIT ....................................................................................... 70
13.
MAINTAINING / REPAIRING THE UNIT ............................................................ 73
14.
WARRANTY PROVISIONS ............................................................................... 75
Operating manual
1.
Intended use
JULABO Temperature Systems have been designed for temperature application to specific fluids in a
external closed system (oop circuit). The units feature pump connections for temperature control of
external systems (loop circuit).
JULABO circulators are not suitable for direct temperature control of foods, semiluxury foods and tobacco, or pharmaceutical and medical products. Direct
temperature control means unprotected contact of the object with the bath medium
(bath fluid).
1.1.
Description
•
Besides the cooling unit, the main functional elements are the heater, circulation pump and
control electronics. Via an external Pt100 control sensor, a self-optimizing, electronic proportional
temperature control (PID characteristic) adapts the heat supplied to the thermal requirements of
the external system.
•
The high pump capacity can be reduced by regulating the motor speed in five grades. It may thus
be adapted to sensitive vessels.
•
LH47: The cooling unit may be cooled with air.
LH50: The cooling unit may be cooled with water.
•
Setting is rapid and simple using the splash-proof keypads. The operating elements consist of the
local operating board with a bright VFD-Info-Display, as well as the removable control module RD
connected with a cable.
The microprocessor technology allows four temperature values to be stored and indicated on the
DIALOG-DISPLAY (LCD) of the control module RD: working temperature, high and low
temperature warning limits as well as pump pressure stage.
•
The digital RS232 / RS485 port permits modern process engineering without additional interface.
•
The excess temperature protection (safety temperature), a safety feature functioning
independent of the regulator circuit, is adjusted and indicated via the VFD-Info-Display.
•
The integrated programmer allows programming of setpoint and time values for six temperature
profiles.
•
The following analog sockets are available:
- The REG+E-PROG socket for setpoint selection via an external, analog programmer.
At the same time, this socket provides three analog outputs for temperature recorders.
- The external Pt100 socket for external control.
- The alarm output for an external signal.
- The stand-by input for external emergency switch-off.
2.
Operator responsibility – Safety instructions
The products of JULABO 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 circulator and also specifies the most important safety precautions to preclude these
dangers as far as possible.
5
Operator responsibility – Safety instructions
The operator is responsible for the qualification of the personnel operating the units.
 The personnel operating the units should be regularly instructed 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
understand the safety information and operating instructions.
 When using hazardous materials or materials that could become hazardous, the circulator may be
operated only by persons who are absolutely familiar with these materials and the unit. 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!
Contact
JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: +1(610) 231-0250
Fax:
+1(610) 231-0260
info @ julabo.com
www.julabo.com
Safety instructions for the operator:
 Avoid strikes to the housing, vibrations, damage to the operating-element panel (keypad,
display), and contamination.
 Make sure the product is checked for proper condition regularly (depending on the conditions of
use). Regularly check (at least every 2 years) the proper 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 the
instruments being operated on the same mains.
 This unit is designed for operation in a controlled electromagnetic environment. This means that
transmitting devices (e.g., cellular phones) should not be used in the immediate vicinity.
 Magnetic radiation may affect other devices with components sensitive to magnetic fields (e.g.,
monitors). We recommend 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.
Appropriate operation
Only qualified personnel is authorized to configure, install, maintain, or repair the unit.
Persons who operate the circulator must be trained in the particular tasks by qualified personnel.
The summarized user guidance (short manual) and the specification table with information on
individual parameters are sufficient for this.
Use
The bath can be filled with flammable materials. Fire hazard!
There might be chemical dangers depending on the bath medium used.
Observe all warnings for the used materials (bath fluids) and the respective instructions (safety data
6
sheets).
Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in well
ventilated areas.
Only use recommended materials (bath fluids). Do not use poisonous, vitriolic or corrosive bath
fluids..
When using hazardous materials or materials that could become hazardous, the operator must
affix the enclosed safety labels to the front of the unit so they are highly visible:
If this unit is intended for use within the United States of America, all 3 warning labels must be
affixed to the housing of the unit prior to use. Directions for the positioning of the individual warning
labels are enclosed with the warning labels included in the delivery. Warning labels must be easily
visible to users.
1
Warning label W00: Colors: yellow, black
Danger area. Attention! Observe instructions.
(operating manual, safety data sheet)
2
Mandatory label M018:
Colors: blue, white
Carefully read the user information prior to beginning operation.
Scope: EU
or
Semi S1-0701 Table A1-2 #9
Carefully read the user information prior to beginning operation.
Scope: USA, NAFTA
2
Warning label Proposition 65
3
Particular care and attention is necessary because of the wide operating range.
There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be touched.
Warning label W26: Colors: yellow, black
Hot surface warning.
(The label is put on by JULABO)
Observe the instructions in the manuals for instruments of a different make that you connect to the
circulator, particularly the corresponding safety instructions. Also observe the pin assignment of
plugs and technical specifications of the products.
2.1.
Disposal
The product may be used with oil as bath fluid. These oils fully or partially consist of mineral oil or
synthetic oil. For disposal, follow the instructions in the material safety data sheets.
This unit contains the refrigerants R-404A and R-23, which at this time are not considered harmful to
the ozone layer. However, over the long operating period of the unit, disposal rules may change.
Therefore, only qualified personnel should handle the disposal.
Contact an authorized waste management company in your country.
Disposal with household waste (unsorted waste) or similar collections of
municipal waste is not permitted!
7
Operator responsibility – Safety instructions
2.2.
Technical specifications
LH 47
LH 50
Mains power connection
400 V/3P/50 Hz
V/
Hz
360-440 V/3PNPE/50 Hz
360-440 V/3PNPE/50 Hz
Current input
A
12
20
Working temperature range
°C
-47 ... 250
-50 ... 250
Temperature stability
K
±0.01 ... ±0.05
±0.01 ... ±0.05
Cooling capacity
°C
200 100// 20
200 // 20
pump pressure stage 1
kW
3.7 3.1 // 3.07 2.0 0.99 0.27
5.5 // 7.3 4.6 2.3 0.45
pump pressure stage 5
kW
3.5 3.0 // 2.9 1.9 0.90 0.07
5.5 // 7.2 5.1 2.3 0.19
Cooling compressor
1-stage
air-cooled
1-stage
water-cooled
Refrigerant
R404A
R404A
(at 230 V)
0 -20 -40
0
-20 -40
(bath liquid: Thermal / Ethanol)
Cooling water : Flow rate
at 20 °C inlet temperature
l/h
-----
390
Heater capacity
kW
1.8
6.0
Pressure pump, adjustable
grade
1
2
3
4
5
pressure min ... max. at 0 liter
bar
0.5
0.7
1.1
1.3
1.7
discharge, max. at 0 bar
l/min
16
19
23
26
30
Pressure pump, adjustable
grade
1
2
3
4
5
pressure min ... max. at 0 liter
bar
0.7
0.9
1.4
1.8
2.3
discharge, max. at 0 bar
l/min
17
19
24
27
31
Viscosity, max. 50 mm²/s (50 cSt)
Noise level, 1 m distance
dBA
72
-----
Ambient temperature
°C
5 ... 40
5 ... 40
Filling volume
liters
2.5
10
liters
3.2 … 8.4
3.2 … 8.4
Overall dimensions (WxDxH)
cm
40x55x127
40x55x127
Weight
kg
150
182
Heat exchanger
Reservoir
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C
Technical changes without prior notification reserved.
3
Pump data in relation to fluids with a specific density of 1 kg/dm
8
LH 47
LH 50
Mains power connection
230 V/3P/60 Hz
V / Hz
207-253 V/3PPE/60 Hz
207-253 V/3PPE/60 Hz
Current input
A
13
27
Working temperature range
°C
-47 ... 250
-50 ... 250
Temperature stability
K
±0.01 ... ±0.05
±0.01 ... ±0.05
Cooling capacity
°C
200 100// 20
pump pressure stage 1
kW
3.8 3.3 // 3.2 2.1 1.1 0.32
5.5 // 7.3 4.9 2.6 0.5
pump pressure stage 5
kW
3.7 3.2 // 3.1 2.0 1.0 0.12
5.5 // 7.2 4,6 2.1 0.4
Cooling compressor
1-stage
air-cooled
1-stage
water-cooled
Refrigerant
R404A
R404A
(at 230 V)
0 -20 -40
200 // 20
0
-20 -40
(bath liquid: Thermal / Ethanol)
Cooling water : Flow rate
at 20 °C inlet temperature
l/h
-----
330
Heater capacity
kW
1.8
6.0
Pressure pump, adjustable
grade
1
2
3
4
5
pressure min ... max. at 0 liter
bar
0.5
0.7
1.1
1.3
1.7
discharge, max. at 0 bar
l/min
16
19
23
26
30
Pressure pump, adjustable
grade
1
2
3
4
5
pressure min ... max. at 0 liter
bar
0.7
0.9
1.4
1.8
2.3
discharge, max. at 0 bar
l/min
17
19
24
27
31
Viscosity, max. 50 mm²/s (50 cSt)
Noise level, 1 m distance
dBA
72
-----
Ambient temperature
°C
5 ... 40
5 ... 40
Filling volume
liters
2.5
10
liters
3.2 … 8.4
3.2 … 8.4
Overall dimensions (WxDxH)
cm
40x55x127
40x55x127
Weight
kg
150
182
Heat exchanger
Reservoir
All measurements have been carried out at: rated voltage and frequency
ambient temperature: 20 °C
Technical changes without prior notification reserved.
Pump data in relation to fluids with a specific density of 1 kg/dm3
9
Operator responsibility – Safety instructions
Temperature selection
digital
via Removable control module RD
indication on DIALOG-Display (LCD)
remote control via personal computer indication on monitor
Temperature indication
VFD-Info-Display
DIALOG-DISPLAY (LCD)
Resolution
K
0.01 from -9.99 °C to +249.99 °C
Pump pressure display
on VFD-Info-Display in five grades
Liquid level display
on VFD-Info-Display in five grades
Absolute Temperature Calibration
(ATC1)
K
±3
(ATC2)
K
±9
Temperature control
ICC - Intelligent Cascade Control, self-optimizing
Cascade, parameter can be called-in and modified
Working temperature sensor
Pt 100
Safety temperature sensor
Pt 100
Electrical connections:
Computer interface
Programmer input -100 °C to 400 °C =
Temperature recorder outputs
RS232 or RS485
0 to 10 V or 0 to 20 mA or 4 to 20 mA
0 to 10 V (0 V = -100 °C, 10 V = 400 °C)
0 to 20 mA (0 mA = -100 °C, 20 mA = 400 °C)
4 to 20 mA (4 mA = -100 °C, 20 mA = 400 °C)
Stand-by input
External alarm device
24-0 V DC / max. 25 mA
External measurement and control sensor
Pt100, 4-lead technique
Control connector (10) Output voltage:
230 V∼ / max. 0.1 A
Safety installations according to IEC 61010-2-010:
Excess temperature protection >TANK<
Excess temperature protection >RES<
Low level protection
Liquid level display
Classification according to DIN 12876-1
Supplementary safety installations
High temperature warning function
Low temperature warning function
Supervision of the working sensor
Reciprocal sensor monitoring between
working and safety sensors
Alarm indication
10
adjustable from 0 °C ... 320 °C
adjustable from 0 °C ... 220 °C
float switch
optical, 5-graded
class III FL
optical + audible (in intervals)
optical + audible (in intervals)
plausibility control
difference >50 K
optical + audible (permanent)
Environmental conditions according to IEC 61 010-1:
•
Use only indoor.
•
Altitude up to 2000 m - normal zero.
•
Ambient temperature: see Technical specifications
•
Air humidity:
Max. rel. humidity 80 % for temperatures up to +31 °C,
linear decrease down to 50 % relative humidity at a temperature of +40 °C
•
Max. mains fluctuations of ±10 % are permissible.
•
Overvoltage category II
•
Pollution degree 2
Caution:
The unit is not suitable for use in explosive atmosphere
Protection class according to IEC 60 529: IP31
The unit corresponds to Class I
Standards for interference resistance according to EN 61326-1
This unit is an ISM device classified in Group 1 (using high frequency for internal purposes) Class A
(industrial and commercial range).
11
Operator responsibility – Safety instructions
2.3.
Cooling water connection
Cooling water pressure (IN / OUT )
Difference pressure (IN - OUT )
Cooling water temperature
max.
6 bar
3.5 to 6 bar
<20 °C
Notice:
Cooling water circuit
Risk of oil leaking from the refrigeration system (compressor) of the recirculating
cooler into the cooling water in case of a fault in the cooling water circuit!
Observe the laws and regulations of the water distribution company valid in the
location where the unit is operated.
Notice:
Danger of corrosion of heat exchanger due to unsuitable quality of cooling
water.
• Due to its high content of lime, hard water is not suitable for cooling and causes
scale in the heat exchanger.
• Ferrous water or water containing ferrous particles will cause formation of rust
even in heat exchangers made of stainless steel.
• Chlorinated water will cause pitting corrosion in heat exchangers made of
stainless steel.
• Due to their corrosive characteristics, distilled water and deionized water are
unsuitable and will cause corrosion of the bath.
• Due to its corrosive characteristics, sea water is not suitable.
• Due to its microbiological (bacterial) components, which settle in the heat
exchanger, untreated and unpurified river water and water from cooling towers is
unsuitable.
• Avoid particulate matter in cooling water.
• Avoid putrid water.
Recommended quality of cooling water:
pH
Sulfate [SO4 2- ]
Hydrocarbonate [HCO 3-]/sulfate [SO4 2-]
Hardness [Ca 2+, Mg 2+]/[HCO 3-]
Alkalinity
Conductivity
Chloride (Cl -)
Phosphate (PO4 3-)
Ammonia (NH3)
Free chlorine
Trivalent iron ions (Fe 3+)
Manganese ions (Mn 2+)
Carbon dioxide (CO2)
Hydrogen sulfide (H2S)
Content of oxygen
Algae growth
Suspended solids
12
7.5 to 9.0
< 100 ppm
> 1 ppm
> 0.5 °dH
60 ppm < [HCO 3-] < 300 ppm
< 500 μS/cm
< 50 ppm
< 2 ppm
< 0.5 ppm
< 0.5 ppm
< 0.5 ppm
< 0.05 ppm
< 10 ppm
< 50 ppm
< 0.1 ppm
impermissible
impermissible
Operating instructions
3.
Safety notes for the user
3.1.
Explanation of safety notes
In addition to the safety warnings listed above, warnings are posted throughout the
manual. These warnings are designated by an exclamation mark inside an
equilateral triangle. “Warning of a dangerous situation (Attention! Please follow the
documentation).”
The danger is classified using a signal word.
Read and follow these important instructions.
Warning:
Describes a possibly highly dangerous situation. If these instructions are not
followed, serious injury and danger to life could result.
Caution:
Describes a possibly dangerous situation. If this is not avoided, slight or minor
injuries could result. A warning of possible property damage may also be contained
in the text.
Notice:
Describes a possibly harmful situation. If this is not avoided, the product or anything
in its surroundings can be damaged.
3.2.
Explanation of other notes
Note!
Draws attention to something special.
Important!
Indicates usage tips and other useful information.
3.3.
Safety instructions
Follow the safety recommendations to prevent damage to persons or property.
Further, the valid safety instructions for working places must be followed.
•
Only connect the unit to a power socket with earthing contact (PE – protective
earth)!
•
The power supply plug serves as safe disconnecting device from the line and
must be always freely accessible.
•
Place the instrument on an even surface on a pad made of non-inflammable
material.
•
Do not stay in the area below the unit.
•
Make sure you read and understand all instructions and safety precautions listed
in this manual before installing or operating your unit.
•
Set the safety temperature.
•
Never operate the unit without bath fluid in the bath.
13
Safety notes for the user
•
Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the fluid.
•
Prevent water from penetrating into the hot bath oil.
•
Do not drain the bath fluid while it is hot!
Check the temperature of the bath fluid prior to draining (by switching the unit on
for a short moment for example).
•
Employ suitable connecting tubing.
•
Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
•
Make sure that the tubing is securely attached.
•
Regularly check the tubing for material defects (e.g. for cracks).
•
Never operate damaged or leaking equipment.
•
Always turn off the unit and disconnect the mains cable from the power source
before performing any service or maintenance procedures, or before moving the
unit.
•
Always turn off the unit and disconnect the mains cable from the power source
before cleaning the unit.
•
Always empty the bath before moving the unit.
•
Transport the unit with care.
•
Sudden jolts or drops may cause damages in the interior of the unit.
•
Observe all warning labels.
•
Never remove warning labels.
•
Never operate equipment with damaged mains power cables.
•
Repairs are to be carried out only by qualified service personnel.
Some parts of the bath cover and the pump connections may become extremely
warm during continuous operation. Therefore, exercise particular caution when
touching these parts.
Caution:
The temperature controlling i.e. of fluids in a reactor constitutes normal temperature
system practice.
We do not know which substances are contained within these vessels.
Many substances are:
•
inflammable, easily ignited or explosive
•
hazardous to health
• environmentally unsafe
i.e.: dangerous
The user alone is responsible for the handling of these substances!
14
The following questions shall help to recognize possible dangers and to reduce the
risks to a minimum.
•
Are all tubes and electrical cables connected and installed?
Note:
sharp edges, hot surfaces in operation, moving machine parts, etc.
•
Do dangerous steams or gases arise when heating?
Is an exhaust needed when working?
•
What to do when a dangerous substance was spilled on or in the unit?
Before starting to work, obtain information concerning the substance and
determine the method of decontamination.
Caution:
Escape of vapors / gas
The necessity of degassing requires that a closed system is not entirely sealed.
Especially at increased working temperatures vapor / gas may escape.
Ensure sufficient ventilation at the place of installation!
Notice:
When you have finished the application, it is recommended to keep on circulating
the liquid in the bath or the external system for some time. Simultaneously set the
working temperature to +20 °C to allow the temperature in the system to decrease
slowly.
Thus fractional over-heating of the bath liquid is prevented.
Notice:
Please check the safety device from time to time.
•
Excess temperature protection according to IEC 61010-2-010
With a screw driver turn back the adjustable excess temperature protection until
the shut-down point (actual temperature).
•
Low level protection
To check the function of the float of this unit it cannot be operated manually.
The 5-graded level display should therefore be observed whenever refilling.
If the bath liquid thickens or cracks, the instrument should be cleaned and
checked by qualified personnel.
WARNING
This product contains chemicals known to the state of California to cause cancer,
birth defects or other reproductive harm.
15
Operating controls and functional elements
4.
Operating controls and functional elements
Front view
16
LH47
LH50
air-cooled
water-cooled
1
Mains power switch, illuminated
2
Local operating board
3
Socket board - description see page 18
4
Removable control module RD
5
Filling funnel (hinged)
Motor protection circuit breaker for compressor motor
1
6
0
2 Mains circuit breakers (resettable) 10 A for the pump-motor
4 Mains circuit breakers (resettable) 16 A
7
Venting grid, removable
8
Drain with drain port
2
2.1
Local operating board
VFD-Info-Display
Header: Control indicators see section 2.2
Line 1:
Actual value
To swap, press the key
Line 2:
or
Line 3:
2.2
(see below)
Working temp. setpoint, constantly
S xxx.xx
indication of the safety temperature (TANK)
Miscellaneous values
To swap, press the key
or
Int or Ext
(see below)
indication of the safety temperature (RES)
Control indicators in the header:
Heating / Cooling / Alarm / Remote control
Temperature indication Internal or External actual value
Temperature indication in °C or °F
Display for the adjusted pump pressure stage (five grades),
.
adjustable via the key
Liquid level display (five grades)
for the reservoir.
17
Operating controls and functional elements
Key to swap line 3 on the VFD
2.3
ID
xx
L
xx
Identification no. of control module RD
Capacity in %
E xxx.xx or I xxx.xx Actual value (external or internal)
P
2.4
Int
x.xx
Pump pressure in bar
Key to swap line 1 on the VFD
Actual value Int or Ext alternating with line 3
2.5
Key to indicate the safety temperature on the VFD
Line 2: TANK - Safety temperature in internal bath
Line 3: RES - Safety temperature in internal reservoir
2.6
Adjustable excess temperature protection (safety temperature)
Used for setting the safety temperature in the internal bath, called
"TANK" on the display
2.7
Adjustable safety temperature.
Used for setting the safety temperature in the internal reservoir,
called "RES" on the display
2.8
Key for automatic filling and air purge of the unit as well as the
connected external system.
3
Socket board
Programmer input and temperature recorder output
3.1
REG+E-PROG
Stand-by input (for external emergency switch-off)
3.2
STAND-BY
3.3
Alarm output (for external alarm signal)
ALARM
3.4
Connector for external measurement and control sensor
EXT. Pt100
3.5
SERIAL
3.6
Connector: control cable of control module RD
RD
18
Interface RS232/RS485
4
Control module RD
4.0
Setp:
120.00°C
IntAct
21.00°C
ExtAct: 20.00°C
Control: Intern
DIALOG-DISPLAY (LCD)
Standard indication
Line 1: Setpoint
in °C
Line 2: Internal actual value
in °C
Line 3: External actual value
in °C
Line 4: Control type: internal / external control
Indicating messages (e. g. warnings)
Start / stop key
4.1
To switch the circulation pump, heating element and cooling unit.
SET Menu Key - Indicating and setting setpoint values
4.2
>Setp.: 120.00°C
Overt.:255.00°C
Subtmp:-55.00°C
St.Pump:
2
Set the following values:
in Line 1: the working temperature
Line 2: the high temperature limit
Line 3: the low temperature limit
Line 4: the pump pressure stage
Setp.:
Overt.:
Subtmp:
St.Pump:
Control type: internal / external control
4.3
To swap, the unit has to be in the STOP MODE.
Indicated in line 4 on the DIALOG-DISPLAY (LCD)
MENU key - for selecting the menu functions
4.4
(Menu see page 40)
>Configuration
Control param.
Profile Start
Int. Programmer
4.5
Cursor keys - Select menu items
4.6
P-key
4.7
Escape key
1) Cancel entries
2) Return to a higher menu level
4.8
Enter key
1) Store value / parameter
2) Next lower menu level
4.9
Selecting parameters
Numeric keypad: numerals 0 to 9; minus / decimal point
....
19
Operating controls and functional elements
Rear
20
Control connector
230 V / max. 0.1 A
10
11
Si1
Si3
16
A
M
P
16
A
M
P
16
A
M
P
16
A
M
P
Si2
11a
13 + 14
F1 and F3  Compressor
F2 and F4 Heater, Pump
Si4
1
0
12
4 Mains circuit breakers (resettable) 16 A
Motor protection circuit breaker for compressor motor
Mains power cable with plug
Pump connectors
Return
Feed
M16x1
15
Overflow connector M16x1
16
Connector for expansion vessel
M16x1
17 + 18
Cooling water connectors LH41
G3/4" external thread
IN - inlet
OUT - outlet
19
Castor without brake (at the back)
19a
Castor with brake (at the front)
21
Operating controls and functional elements
4.1.
The Presto Plus principle with closed external system
e.g. LH47; double-sided glass vessel
Operating:
The operation of the temperature
system and the indication is
effected via the local control panel
(2) and the removable operating
device RD(4).
Filling :
First connect the external
consumer. The menu option
>Mode< is set on >Fill<. The unit
is filled at the hinged filling funnel
(5) via the internal reservoir (5a).
The bath liquid spreads from here
into the external reservoir (16a)
and into the heat exchanger (20).
The filling pipe (25) represents narrows. Therefore the filling should be done slowly. The air from the
heat exchanger (20) escapes via the venting valve. In a first step approximately 2,6 liters of bath
indicates 3 or 4 batons (see –Filling volume- page 29).
liquid is filled in until the level indication
Then, by pressing the key
an automatic filling and venting mode with activation of the
circulating pump (23) is started. In intervals the tempering liquid is pumped via connection (13) into
the external system (33) and led back into the heat exchanger (20) via connection (14). At the end of
the filling process the menu option >Mode< has to be set on >Sys close<.
Working:
In case of a closed external system the filling pipe (25) remains open and allows a change in volume
of the bath liquid caused by temperature during operation. In case of emergency it has to be possible
that the expanding bath liquid can drain off at the overflow (15) into a suitable vessel. If necessary
the external reservoir (16a) can be mounted at connection (16).
The temperature system can be cooled with air (32 / LH47) or water (LH50). Connect the cooling
water to the lead in for cooling water (18). Lead the outflow for cooling water (17) into the locally
provided drain respectively backflow.
. The heating (21), the cooling aggregate (22)
The temperature system is started with the key
and the circulating pump (23) start according to the desired adjustments at the operating device RD
(4). In the line to the pump exit (14) the pump pressure (29) and the actual temperature of the
internal control sensor (28a) is permanently measured. If the temperature control has to be effected
externally a Pt100 external sensor (28b) has to be connected and switched over to external control at
the operating device RD(4).
Safety:
In the internal reservoir (5a) there are the level sensor (26) as well as a safety sensor (27b).
The safety sensor (27a) as high temperature protection is located directly at the heater (21).
If the external circuit is interrupted (e.g. with a shut-off valve), an emergency circuit is maintained via
an internal Bypass (30).
22
5.
Preparations
5.1.
Bath fluids
Caution:
Carefully read the safety data sheet of the bath liquid used, particularly with regard
to the fire point!
If a bath fluid with a fire point of ≤65 °C is used, only supervised operation is
possible.
Recommended bath liquids for external, c l o s e d s y s t e m s :
See website for list of recommended bath fluids.
Contact: see page 6
Caution:
Fire or other dangers when using bath fluids that are not recommended:
Please contact JULABO before using other than recommended bath liquids.
JULABO assumes no liability for damage caused by the selection of an unsuitable
bath fluid.
Unsuitable bath fluids are fluids which, e.g.,
• are highly viscous
(much higher than 50 mm2 / S at the respective working temperature)
•
have a low viscosity and have creep characteristics
•
•
have corrosive characteristics or
tend to crack.
No liability for use of other bath fluids!
The maximum permissible viscosity is 50 mm2 / S.
ATTENTION:
Caution:
The use of water in purified or unpurified form is not allowed.
Examples: Tap water, distilled water, water-glycol mixture, CaCl2-brine
Important notice concerning the recommended bath liquids:
•
Bath liquids with a range of application above the fire point ?
•
This temperature system is mainly operated in a closed external system (loop
circuit). The contact of the bath liquid with atmospheric oxygen only takes place
in the internal reservoir, which is not located directly in the termperature circuit.
•
A safety device supervises and controls the the temperature in the internal
reservoir.
•
The temperature of the bath liquid is maintained constant at approx. +20°C
•
The safety device with an adjustable temperature value >RES< works
independently from the control circuit. When actuating this safety device (too
much hot fluid streams into the internal reservoir) the temperature system is
switched off all-polo and permanently.
•
Adjust the safety temperature >RES< at at least 20 K below the fire point of
the bath liquid.
23
Preparations
Diagram 1: JULABO Thermal oils
Change in volume in dependence on the temperature of bath liquid.
Example A:
Filling quantity at ambient temperature
5 liters
Intended working temperature range
-40 °C bis +250 °C
Change in volume caused by temperature 1.75 liters
Here an external expansion vessel is required (Order no.: 8 970 830)
Example B:
Filling quantity at ambient temperature
5 liters
Intended working temperature range
+20 °C bis +200 °C
Change in volume caused by temperature 1.2 liters
Here no external expansion vessel is required
(see table „Filling volume“ Page 29).
24
5.2.
Tubing
Recommended tubing:
Metal tubing, triple insulated, M16x1, Temperature range -100 °C ... +350 °C
Order No.
Length
8 930 209
8 930 210
8 930 211
8 930 214
0.5 m
1.0 m
1.5 m
3.0 m
Metal tubing, insulated, M16x1, Temperature range -50 °C ... +200 °C
Order No.
Length
8 930 220
8 930 221
8 930 222
8 930 223
Pressure max.
6.0 bar at
4.6 bar at
3.8 bar at
0.5 m
1.0 m
1.5 m
3.0 m
+20 °C
+200 °C
+350 °C
Warning:
Tubing:
At high working temperatures the tubing used for temperature application and
cooling water supply represents a danger source.
A damaged tubing line may cause hot bath liquid to be pumped out within a short
time.
This may result in:
• Fire hazard
• Explosion hazard
• Burning of skin
• Difficulties in breathing due to hot atmosphere
Safety recommendations
• Employ suitable connecting tubing.
• Make sure that the tubing is securely attached.
• Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
•
Regularly check the tubing for material defects (e.g. for cracks).
25
Preparations
5.3.
Installation
Caution:
Danger of tipping
•
•
•
•
Lift the unit only with a crane using the lifting strands and the wooden crate
(see pictures on page 2)
The recessed grips on the side are not suited for lifting the unit!
Careful positioning of the unit on its rollers is permitted.
Max. permissible application of force to the upper side 220 N.
Danger of tipping if larger force is applied.
The unit is not suitable for use in explosive environment
•
Place the unit on an even surface on a base made of
nonflammable material. Lift the handle (6) and using the
castor (19) move the unit to the intended location.
•
Keep at least 20 cm of open space on the front and rear
venting grids.
•
Do not install the unit in the immediate vicinity of heat
sources and do not expose it to sunlight.
•
Before operating the unit after transport, wait about one
hour after setting it up. This will allow any oil that has
accumulated laterally during transport to flow back down
thus ensuring maximum cooling performance of the
compressor.
•
5.4.
The place of installation should be large enough and
provide sufficient air ventilation to ensure the room does
not warm up excessively because of the heat the
instrument rejects to the environment. (Max. permissible
ambient temperature: 40 °C).
For a fault (leakage) in the refrigeration system, the
standard EN 378 prescribes a certain room space to be
available for each kg of refrigerant.
The refrigerant quantity is specified on the type plate.
3
> For 0.52 kg of refrigerant R404A, 1 m of space is
required.
Connect the external system
The temperature systems are designed for temperature
application to closed, external systems (loop circuits). To profit
from the system's rapid performance, ensure the tubing line
between the temperature system and the connected external
system is as short as only possible.
26
Caution:
Securely attach all tubing to prevent slipping.
Connecting the external system:
• Remove the cap nuts from the pump
connectors (13, 14) and using tubing connect
the external system (M16x1 / wrench 19 mm).
To prevent the formation of bubbles in the loop
circuit, the pressure line (13) is to be connected
to the lower nozzle of the external system.
Also see the description on page 22
• Connect a piece of tubing to the overflow
connector (15) and drain into a suitable vessel.
(M16x1 / wrench 19 mm), which always has to
be placed lower than the exit „Overflow“.
•
If required, the connector (16) may be used for
connecting an expansion vessel. (M16x1 /
wrench 19 mm)
The use of an expansion vessel is depending
on the highest temperature and the volume of
the bath liquid in the loop circuit.
(see diagram 1 page 24).
•
Close the expansion vessel with the cover Das
Order No. 8 970 831 Expansion vessel 5 liters
Note:
At the desired highest temperature, drain overflowing bath liquid into a
suitable vessel via the connector (15). If at the desired lowest
temperature, low liquid level alarm is not triggered, there is no need to
use an external expansion vessel.
Important: Leakage on shaft sealing
The shaft sealings of the pump are never absolutely tight. But this does
not have an impact on the proper functioning of the instrument. The
slight leakage that appears ensures good sliding properties of the
sealing. Any excess fluid is drained via the overflow connector (15).
Warning:
An external expansion vessel is heated up by the wam outgoing air, especially in
small rooms or if there is not enough distance between the wall and the unit.
In this case only bath liquids with a fire point of ≥100 °C are allowed to be used.
27
Preparations
Notice:
If an expansion vessel is not used, make sure the connector (16) is closed with a
cap nut.
If an external expansion vessel is mounted later, a part of the bath liquid should be
drained before (see chapter Emptying on page 33). It might be helpful to put the
castors at the back on a base which is approximately 10-15 mm high. So the bath
fluid can be collected in the front part of the internal reservoir.
5.5.
Cooling water connection LH 50
Notice:
Cooling water circuit
Risk of oil leaking from the refrigeration system (compressor) of the recirculating
cooler into the cooling water in case of a fault in the cooling water circuit!
Observe the laws and regulations of the water distribution company valid in the
location where the unit is operated.
Even high quality heat exchangers as they are installed in our
equipment can be damaged by unsuitable cooling water.
The quality of the cooling water depends on the local conditions.
The heat exchanger may become leaky due to corrosion or it may
become clogged due to particulate matter
Caution:
Securely attach all tubing to prevent slipping.
OUT
Example:
PVC-tubing
•
Supply cooling water via the inlet (18).
•
Conduct the cooling water via the outlet (17) in the
respective sink or return flow circuit.
Cooling water connectors
G3/4" external thread
Tubing
12 mm inner dia. tubing
IN
12 mm inner dia.
Cooling water see page 12
28
5.6.
Power connection
Caution:
•
Only connect the unit to a power socket with earthing contact (PE – protective
earth)!
•
The power supply plug serves as a safe disconnecting device from the line and
must be always easily accessible.
•
Never operate equipment with damaged mains power cables.
•
•
Regularly check the mains power cables for material defects (e.g. for cracks).
We disclaim all liability for damage caused by incorrect line voltages!
Check to make sure that the line voltage matches the supply
voltage specified on the identification plate.
Deviations of ±10 % are permissible
• Connect the mains plug (12) to a power socket with earthing
contact (PE – protective earth)!
5.7.
Filling
Caution:
Take care of the bath liquid's changing volume varying with the working
temperature of the Presto temperature system.
Guideline:
A volume change of 12 % per 100 °C temperature variation is to be considered..
The maximum change in volume in the internal reservoir for the different models is
included in the table below.
Filling is performed in two sections.
In section 2, the temperature system starts an automatic filling
process enabling convenient filling.
Notice:
First connect the external system! (see page 26)
Take care no bath liquid enters the interior of the unit.
Indication max:
11 liters (LH 47)
18.5 liters (LH 50)
Filling volume
(without external
system connected)
- in the heat exchanger
- in the internal reservoir
LH47
approx. liters
2,5
2,5
8.4
LH50
approx. liters
10
10
8,4
Recommendation:
For filling, use for example an approx. 2 liters measuring jug.
Select the bath liquid suitable for the temperature application
task. (see also diagram 1 page 24).
Indication min:
3.0 liters (LH 47)
10.5 liters (LH 50)
For temperature applications to +250 °C fill up to marker "HT", for
applications to for example –50 °C fill up to marker "TT".
29
Preparations
5.7.1.
Filling of external, closed systems
Section 1
ALARM
CODE 14
•
Connect the unit to a mains power socket (see page 29) and
turn on the unit with the mains power switch (1).
During the self-test all segments of the VFD-Info-Display, all
control indicators and the DIALOG-DISPLAY light up.
After the self-test, the VFD-Info-Display signals low liquid level
alarm. >CODE 14< and a signal tone sounds.
•
Press (5.1) to open the filling funnel (5). Slowly pour in bath
liquid into the opening (5.2) and observe the liquid level
display.
•
. During the filling
Watch the level indication
procedure 3 or 4 steps of the level indication can light-up, in
the end they should light-up.

Section 2
•
Turn the unit off and on again with the mains power switch (1). Wait
until the self-test is completed.
•
to start the automatic filling process.
Press the key
rd
As soon as the pump pressure indication in the 3 line of the VFDInfo-Display
(„P X.XX“) has scaled up to at least 0.1 bar, the tempering liquid is
pumped into the external system. In intervals of 10 seconds bath
liquid is pumped into the external system - air purge is carried out in
the breaks.
Notice: The filling mode has to stay activated for at least 5 minutes
in order to fully de-air the system.
•
The liquid level in the unit falls.
In case of a WARNING >CODE 40< again slowly fill in tempering
liquid into the opening (5.2).
In case of a ALARM >CODE 14< return to the final condition of
section 1 and restart section 2.
•
If the liquid level display remains unchanged after some minutes,
complete filling according to the application task.
See page 29 - marker "HT" or "TT".
•
Press
•
The message >SELECT SYSTEM<is a demand to make now an
adjustment in the menu >Pump<.
In the sub >Pump< the unit has to be set on >Mode:< >sys close< .
(see page 31 Adjusting Mode: )
•
The unit is now ready for operation .
Pump
>Pump
OFF
Mode:Sys close
30
to finish the automatic filling process.
Notice:
In the >Mode< > fill < or. >drain<>SELECT SYSTEM< is shown when starting.
The message >SELECT SYSTEM<is a demand to make an adjustment in the
menu >Pump<.
The insertion is effected cyclicly until the adjustment has been made.
Adjusting Mode:
 Notice concerning the filling
The temperature system was emptied last, therefore the menu option >Mode< now still
stands on >drain<. In the configuration of this unit the >Mode< >fill< means the same
as >drain< and therefore does not have to be adjusted.
Explanation of terms:
>Mode: sys close< stands for closed, external system (Presto principle page 22)
Press the respective keys in the following order:
1.
2.
3.
4.
MENUE key
Cursor key
Enter key
Cursor key
1x
up to Submenu "Pump"
1x
1x up to "Pump"
5.
6.
7.
P- key
Enter key
Escape key
sys close / fill / drain
1x
2x
The DIALOG-DISPLAY (LCD) helps to follow up the individual settings.
The VFD-Info Display shows the recently chosen operating status for approx. 3 seconds.
Switch over to > sys close <
CLOSED SYSTEM
Switch over to > fill <
FILL SYSTEM
Switch over to >drain<
DRAIN SYSTEM
31
Preparations
5.8.
Degasifying
If the temperature system is operated an automatic degasifying is
carried out after the start.
During the degasifying unwelcome components of the bath liquid
are are drawn off .
Examples:
 Air bubbles which were enclosed in the bath liquid during the
filling for the unit.
 Slightly volutile components which are eventually in the fluid.
 Eventually existing water components, which reached the bath
liquid during the storage.
S 180.00
-DEGASSetp:
180.00°C
IntAct
78.00°C
ExtAct: --.--°C
Control: Intern
degasing activ
The automatic degasifying is a part of the program in the unit,
which is always active in the background. Experience shows that
the activity is only noticed after a first or new filling of the unit.
During the heating-up phase, e.g. to a working temperature of
180°C, the VFD-Info-Display shows >DEGAS<.
Parallely to this, in line 4 in the DIALOG-DISPLAY the message
>Degasifying active< is inserted. In this phase the temperature
rise is stopped, the pump motor and the ventilation valve are
activated alternately (audible). During the heating-up phase this
degasifying mode can be repeated with the most different
temperatures.
 The automatic degasifying can be stopped by :
Operating the key
or
adjusting the set temperature on at least 50°C lower than the
current set temperature.
Caution:
Escape of vapors / gas
• The necessity of degassing requires that a closed system is not entirely sealed.
Especially at increased working temperatures vapor / gas may escape.
Ensure sufficient ventilation at the place of installation!
•
32
With different substances the change-over to the steam phase and therefore
also an enormous change of volume is carried out very quickly. The fluid, for
which there is no more room in the internal reservoir, now has to drain off
controlled via the overflow.
Important:
Connect a piece of tubing to the overflow connector (15) and drain into a
suitable vessel. (min. 2 liters) (M16x1 / wrench 19 mm), which always has to
be placed lower than the exit „Overflow“
5.9.
Draining
Notice:
•
Do not drain the bath fluid while it is hot or cold !
Check the temperature of the bath fluid prior to draining (by switching the unit on
for a short moment, for example).
•
Store and dispose the used bath fluid according to the laws for environmental
protection.
• Turn on the temperature system with the mains power
switch or
S
P
20.00
x.xx
Pump
>Pump
Mode:
press the stop key
MODE.
OFF
drain
to make the unit enter the STOP-
• In the submenu >Pump<, set the menu items >Mode< to
>drain<.
(see page 31 Adjusting Mode: )
 The reset to another mode can only take place after the
ALARM
CODE 14
next filling.
Reason: During the >ALARM – CODE 14< there is no
possibility for access to the menu functions !
• Pull the venting grid (8.1) to the front and remove.
• Place a suitable vessel (8.2) for accepting the used bath
liquid underneath the drain.
• Slide a short piece of tubing onto the drain port and hold
the end into the vessel.
• Unscrew the drain screw by some turns.
The LH50 has two drain screws. Both have to be used.
• The liquid level in the unit falls.
Now the VFD-Display of the unit should show low level,
WARNING >CODE 40< and then ALARM >CODE 14<.
Press enter
to quit the audible signal.
 Drain the external system:
At the upper nozzle of the external system, disconnect
the tubing to the pump connector "return" (14) until an air
stream moves in.
(see sketch on page 26)
• Tighten the drain screw after draining the unit.
The internal reservoir should additionally be emptied via the
connection for the expansion vessel (16) on the rear side of
the temperature system.
(Cleaning the unit see page 70)
33
Operating procedures
6.
Operating procedures
6.1.
Switching on / Selecting the language
Switching on:
• The unit is operated by pressing the mains power switch (1).
The integrated pilot lamp illuminates.
JULABO
P R E S T O
V1.45-1
 During the self-test all segments of the VFD-Info-Display, all
control indicators and the DIALOG-DISPLAY light up.
Then the software version number (example: V1.45-1)
appears for a short moment and the message "OFF" indicates
the unit is ready to operate.
 Message >WAIT< when adjusting
>Mode: sys close<:.
During the message >WAIT< the ventilation valve is opened
for 10 seconds. So, the air which has eventually been
collected during the standstill, can escape.
 The unit returns to the previous operating mode that was
active before it was turned off:
keypad control mode
(manual operation via the unit itself/RD)
or
remote control mode
(operation via PC).
Selecting the language:
There are two options for the language of the DIALOG-DISPLAY
(LCD): German or English. Select the desired language in the
MENU level under the submenu >Configuration.
Press the respective keys in the following order:
Soll:
20.00°C
IntIst
xxx.00°C
>Konfiguration
ExtIst:
Regelparameter
Konfiguration
Regelung:
Identif. xxxxx
Sollwert xxxxx
Autostart
xxx
Standby
xxxx
>Sprache xxxxxxx
Setp.:
20.00°C
IntAct xxx.xx°C
ExtAct: xxx.xx°C
Control: intern
1. MENU key
1x
2. Enter key
1x
3. Cursor key
up to Submenu "Sprache/Language"
4. P-key
1x
5. Enter key
1x
6. Escape key
2x
The DIALOG-DISPLAY (LCD) helps to follow up the individual
settings (example: swap the language from German to English).
34
7.
Manual operation
7.1.
Start - Stop
Setp.:
20.00°C
IntAct
21.00°C
ExtAct: --.--°C
Control: Intern
S
P
Start:
• Press the start/stop key
.
The actual bath temperature is displayed.
For approx. 3 seconds the VFD-Info-Display shows the
adjusted >Mode< .
20.00
x.xx
Adjustment > sys close <
→ CLOSED SYSTEM
The temperature system runs.
Notice:
The message >SELECT SYSTEM<is a demand to make an adjustment in the
menu >Pump< according to the connected system. The insertion is effected
cyclicly until the adjustment has been made
(see page 31 Adjusting Mode: )
In the >Mode< > fill < or. >drain<>SELECT SYSTEM< is shown when starting.
Notic:
For physical reasons, refrigeration units provide full cooling
performance only after some minutes. After the start up to 5
minutes can go by, until the cooling capacity is given.
Setp.:
20.00°C
IntAct
21.00°C
ExtAct: --.--°C
Control: Intern
Stop-Mode
Stop:
• Press the start/stop key
.
The VFD indicates "OFF" and the message STOP-MODE
flashes in line 4 on the LCD.
S 20.00
ID
0
The unit also enters the safe operating state "OFF" after a mains
power interruption. The temperature values entered via the
keypad remain in memory. With the temperature system in
keypad control mode, press the start/stop key to restart
operation. With the instrument in remote control mode, the
personal computer must first resend the parameters set via the
interface before the temperature system may be restarted.
35
Manual operation
7.2.
Direct setting of the working temperature
Setp.:
20.00°C
IntAct
21.00°C
ExtAct: --.--°C
Control: Intern
This setting may be carried out with the temperature system
being in operating state Start or Stop!
•
•
The value previously set appears on the DIALOG-DISPLAY
(LCD) (example: 20.00 °C).
A flashing segment indicates that a value needs to be
entered.
Use the keypad to enter the new value and press enter
to store the selected value.
(examples: 120.00 °C; 228.50 °C; -15.00 °C).
7.3.
Settings in the SET menu
•
to call up the SET menu. It is then
Press the key
indicated on the DIALOG-DISPLAY (LCD).
Set the following values:
in Line 1: the working temperature in °C
Line 2: the high temperature limit in °C
Line 3: the low temperature limit in °C
Line 4: the pump pressure stage
7.3.1.
•
Enter the desired values via the keypad. Settings may be
carried out with the temperature system being in operating
state Start or Stop!
•
Use the cursors
•
Press escape
to swap the lines.
to quit the SET menu.
Setting the working temperature
>Setp.: 200.00°C
Overt.: 255.00°C
Suptmp: -55.00°C
St.Pump:
2
>Setp.: 120.00°C
Overt.:255.00°C
Subtmp:-55.00°C
St.Pump:
2
>Setp:
Setting the working temperature
 Setting in line 1.
The value previously set appears on the DIALOG-DISPLAY
(LCD) (example: 100.00 °C).
A flashing segment indicates that a value needs to be
entered.
 Use the keypad to enter the new value
(examples: 120.00 °C; 228.50 °C; -15.00 °C).
 Press enter
36
Setp.:
Overt.:
Subtmp:
St.Pump:
to store the selected value.
7.3.2.
Warning functions
)) )) ))
The high and low temperature warning functions accompany the
working temperature value. An audible signal sounds in intervals
when the actual temperature exceeds one of the set limits
(patented).
The corresponding message appears in line 4 on the DIALOGDISPLAY (LCD).
>Overt:
Setp.: 120.00°C
>Overt.:130.00°C
Subtmp:-55.00°C
St.Pump:
2
Setting the high temperature limit
 Setting in line 2.
The value previously set appears on the DIALOG-DISPLAY
(LCD).
A flashing segment indicates that a value needs to be
entered.
 Use the keypad to enter the new value
(examples: 130.00 °C; -13.00 °C).
 Press enter
Setp.: 120.00°C
Overt.:130.00°C
>Subtmp:110.00°C
St.Pump:
2
>Subtmp:
to store the selected value.
Setting the low temperature limit
 Setting in line 3.
The value previously set appears on the DIALOG-DISPLAY
(LCD).
A flashing segment indicates that a value needs to be
entered.
 Use the keypad to enter the new value
(examples: 110.00 °C; -17.00 °C).
 Press enter
to store the selected value.
Note:
The warning functions will only be triggered when the actual bath
temperature, after start from the "OFF" or "rOFF" mode, lies
within the set limits for 3 seconds.
Example:
Setp:
120.00°C
IntAct 130.50°C
ExtAct: --.--°C
Control: Intern
Excess temp.
The corresponding message appears in line 4 on the DIALOGDISPLAY (LCD).
37
Manual operation
7.3.3.
Setting the pump pressure stage
The pressure of the circulation pump is adjustable in five grades.
After setting, the VFD-Info-Display indicates the corresponding
value.
>St.Pump:
Setp.: 120.00°C
Overt.:130.00°C
Subtmp:110.00°C
>St.Pump:
4
Setting the pump pressure stage
 Setting in line 4.
The value previously set appears on the DIALOG-DISPLAY
(LCD).
A flashing segment indicates that a value needs to be
entered.
 Use the keypad to enter the new value
(example: 4).
 Press enter
to store the selected value.
Note:
The mechanical rotation of the circulation pump produces heat that is
radiated into the bath liquid. The lowest working temperature may thus only
be reached if the pump pressure is set to grade 1.
7.4.

Setting the safety temperature (with shutdown function)
Check the safety installations at least twice a year! See page 15.
TANK 150
RES 100
This safety feature functions independent of the regulator circuit.
When the temperature of the bath liquid has reached the safety
temperature, a complete shutdown of the heater and pump is
effected.
160
80
240
40
Safety temperature in the heat exchanger >TANK<
320
0
(excess temperature protection)
°C
130
60
180
30
10
220
°C
to indicate the safety temperature value in
• Press the key
line 2 >TANK< on the VFD-Info-Display and using a screwdriver
simultaneously turn the setting screw to the desired value
(example: 150 °C).
Setting range:
ALARM
CODE 14
ALARM!
IntAct: xx.xx°C
ExtAct: --.--°C
Temp/level alarm
38
0 °C to 320 °C
in 2 °C steps
The alarm is indicated by optical and audible signals (continuous
tone).
The error messages opposite appear on the DIALOG-DISPLAY
(LCD) and VFD-Info-Display.
Safety temperature in the internal reservoir >RES<
This supplementary safety installation supervises and controls the
temperature of the bath liquid in the internal reservoir.
to indicate the safety temperature value in
• Press the key
line 3 >RES< on the VFD-Info-Display and using a screwdriver
simultaneously turn the setting screw to the desired value
(example: 100 °C).
Setting range:
10 °C to 220 °C
in 2 °C steps
ALARM
CODE 13
ALARM!
IntAct: xx.xx°C
ExtAct: --.--°C
RESERVOIR
The alarm is indicated by optical and audible signals (continuous
tone).
The error messages opposite appear on the DIALOG-DISPLAY
(LCD) and VFD-Info-Display.
• Press enter
to quit the audible signal.
• After eliminating the malfunction, press the mains power switch
off and on again to cancel the alarm state.
Warning:
• Set the safety temperature >TANK< 15 °C above the working temperature
setpoint.
• The safety temperature value >RES<should be set at least 25 °C below the fire
point of the bath liquid used.
39
Menu functions
7.5.
Internal / external control
The temperature system offers the possibility of internal
temperature control in the internal bath or external control directly
in an external system.
Setup for external control:
Connect a Pt100 sensor to the socket "EXT" of the Presto®
temperature system, if necessary perform a calibration using the
"ATC Ext:" function (see page 57) and then securely fix the
sensor in the external system.
ext. Pt100
To swap internal to external control:
• Press the key
control type.
S xx.xx
ID
0
Setp:
120.00°C
IntAct
21.00°C
ExtAct: 20.00°C
Control: Intern
in operating state "OFF" to select the
• The DIALOG-DISPLAY (LCD) indicates the effective control
type in line 4
>Control: intern< or > Control: extern<
←
• Press the start/stop key
Setp:
120.00°C
IntAct
21.00°C
ExtAct: 20.00°C
Control: Extern
Int
.
Temperature indication:
←
←
S 120.00
E 20.00 ←
•
The DIALOG-DISPLAY (LCD)
simultaneously indicates both actual temperatures.
•
The VFD-Info-Display
indicates the actual temperature in line 1. In the header the
corresponding symbol >Int< or >Ext< is illuminated.
•
Press the key
to swap the display.
It is useful, to set line 3 to show the actual temperature
>E xx.xx°C< by pressing the key
.
Caution:
Place the external sensor into the bath medium and securely fix the sensor.
8.
Menu functions
•
Press the MENU key
•
Use the up/down cursor keys
submenu and press enter
•
40
Press escape
to enter the menu level.
to select the desired
.
to return to the previous menu level.
41
Menu functions
8.1.
Configuration
By means of the configuration functions, operation of the
instrument can be optimized for the current application.
• Press enter
to select the configuration submenu.
• Use the up/down cursor keys
to select the desired
option. A flashing line indicates that a value needs to be
entered.
• Press the P-key
.
to select the parameter and press enter
• Press escape
to return the previous menu level.
> Identification
When performing an identification for the controlled system
(temperature application system), the control parameters Xp, Tn
and Tv will be automatically determined and stored.
Possible parameters:
off - no identification.
The control parameters ascertained during the last
identification are used for control purposes.
once - single identification
The instrument performs a single identification of the
controlled system after start.
After the identification process the parameter is automatically
set to "off".
always - continual identification
The instrument performs an identification of the controlled
system whenever a new setpoint is to be reached.
NOTE: Use this setting only when the temperature
application system changes permanently.
Important:
For physical reasons, refrigeration units provide full cooling
performance only after some minutes. During identification this is
given consideration by waiting for 5 minutes after switch-on.
42
Note:
Requirement for an identification of the controlled system:
• The temperature system must heat to a setpoint temperature
at least 10 °C above the previous setpoint using the adjusted
heating power.
• When the adjusted control parameters Xp, Tn and Tv are too
high, this requirement may not be given with respect to on
how much the setpoint temperature has to change. In this
case, prior to carrying out an identification in the "OFF" state,
set the control parameters to lower values.
Recommended setting for internal control:
Xp = 1.0 °C
Tn = 80 s
Tv = 8 s
Setp.:
50.00°C
IntAct:
Eprog: 50.00°C
50.00°C
ExtAct:
50.00°C
IntAct:
50.00°C
Rs232:intern
50.00°C
Control:
Power:
%
IntAct: 50
50.00°C
Control:
Power: intern
50 %
Control: intern
R
S xx.xx
ID
0
REG+E-PROG
> Setpoint
The instrument provides three possibilities for setpoint selection.
The active mode is indicated on the DIALOG-DISPLAY (LCD).
The control indicator >R< (REMOTE) is illuminated in the
header of the VFD-Info-Display if setpoint selection is effected
via the EPROG or SERIAL input.
Possible parameters:
keyb- Setpoint setting via keypad (Setp.:) or via the integrated
programmer.
eprog - Setpoint setting via the analog interface REG+E-PROG
(3.1) connection with an external voltage or current source
or a programmer. (see page 53)
RS232 - Setpoint setting via the serial RS232/RS485 interface
(3.5) through a PC or superordinated data system.
SERIAL
>Autostart
Note:
The temperature system has been configured and supplied by
JULABO according to N.A.M.U.R. recommendations. This
means for the start mode, that the unit must enter a safe
operating state after a power failure (non-automatic start mode).
This safe operating state is indicated by "OFF", resp. on the
VFD-Info-Display. A complete shutdown of the main functional
elements such as heater and circulation pump is effected
simultaneously.
Only with setpoint adjustment the AUTOSTART-function can be
executed via >Taste< and >EPROG< (see above).
43
Menu functions
Should such a safety standard not be required, the
AUTOSTART function (automatic start mode) may be activated,
thus allowing the start of the instrument directly by pressing the
mains power switch or using a timer.
Possible parameters:
on - AUTOSTART on
off - AUTOSTART off
Warning :
For supervised or unsupervised operation with the AUTOSTART function, avoid
any hazardous situation to persons or property.
The instrument does no longer conform to N.A.M.U.R. recommendations.
Take care you fully observe the safety and warning functions of the instrument.
If the setpoint is given via the serial interface, no AUTOSTART is possible.
>Stand-by input
External stand-by for emergency switch-off
(connector - see page 6)
Possible parameters:
STAND-BY
no - stand-by input is ignored
yes - stand-by input is active
> Language
There are two options for the language of the DIALOGDISPLAY (LCD): German or English.
Possible parameters:
German (deutsch)
English (engl).
>IdentNo
The identification number identifies the removable control
module RD.
®
Assign identification numbers if more than one Presto
temperature system is available.
S xx.xx
ID
0 ←
Adjustable parameters:
0 ... 999
Indicated also on the VFD-Info-Display.
44
8.2.
Control parameters
When performing an identification for the controlled system
(temperature applications system) (see page 42), the control
parameters Xp, Tn, Tv and Xpu will be automatically determined
and stored.
Each parameter may be manually set via the keypad if
necessary, to allow optimum control performance.
Xp =
to select the submenu "control
• Press enter
parameters".
• Use the up/down cursor keys
to select the
desired option. A flashing segment indicates that a new
value needs to be entered.
• Use the numerals to set the value and then set with enter
(example: Xp = 2.5 °C).
• or at >DynInt<
Press the P-key
enter
.
• Press escape
to select the parameter and press
to return to the previous menu level.
Proportional range >Xp<
The proportional range is the range below the selected
temperature value in wich the the control circuit reduces the
heating power from 100 % to 0 %.
Resetting time >Tn< (Integral component)
Compensation of the remaining control deviation due to
proportional regulation. An insufficient resetting time may cause
instabilities to occur. Excessive resetting time will unnecessarily
prolong compensation of the control difference.
Lead time >Tv< (Differential component)
The differential component reduces the control settling time. An
insufficient lead time will prolong the time required to
compensate for disturbance effects and cause high
overshooting during run-up. An excessive lead time could cause
instabilities (oscillations) to occur.
Proportional range >Xpu<
The proportional range Xpu of the cascaded controller is only
needed for external control.
45
Menu functions
>DynInt< - Dynamics
This parameter affects the march of temperature only in
case of internal control (see page 40)
Adjustable parameter:
standard
The temperature rises quicker, however
can overshoot up to 5 %. If a ramp is
defined, the march of temperature often
follows this ramp.
aperiod.
The temperature rises chronologically
without overshoot.
With both adjustments a sufficient temperature stability
is reached after approximately the same time.
>CoSpeed< 0 up to 5
This parameter affects the march temperature only in
case of external control (see page 40).
The adjustment affects the calculation of the control
parameter when identifying and so the control course.
Optimization instructions for the PID control parameters:
optimum setting
The heat-up curve reveals inappropriate control settings.
Inappropriate settings may produce the following heat-up curves:
46
Xp too low
Tv/Tn too low
Xp too high or Tv too high
Tv/Tn too high or Xp too high
8.3.
Start of a profile
The start menu of the integrated programmer allows calling
up and defined starting of one of six previously stored
temperature profiles. The profiles are started manually or via
the integrated timer.
There are two possibilities for manually starting a
program:
1.
S
P
xx.xx
x.xx
1. Starting a profile from the OFF state:
The temperature system switches back to the OFF state at
the end of the program.
2. Starting a profile from the operating state.
2.
S 100.00
P
xx.x
The temperature system is started with the start key
,
and the bath is heated to the desired temperature, for
example 100 °C. At the end of the program, the
programmer switches to the operating state and holds the
bath temperature stable at 100.00 °C.
• Press enter
to select the submenu "Profile Start".
• Use the up/down cursor keys
desired option.
to select the
A flashing segment indicates that a number needs to be
entered.
Start Profile
0 to 5
at Step
0 to 60
Loops
1 to 99
Enter the desired number and set each entry with enter
.
no / yes  (manual start)
or
time
 (via integrated timer)
A flashing line indicates that a parameter needs to be
entered.
Start
Press the P-key
and press enter
to select the respective parameter
.
47
Menu functions
Example: hour.min 6:00 h
• When selecting the parameter time, a new menu level is
called up for entry of the start time.
A flashing segment indicates that a start time needs to be
entered.
hour.min
Start time
Day.Mon
day and month
Year
year
Set each entry with enter
.
Start
no / yes
A flashing line indicates that the parameter "yes" needs to be
entered.
Press the P-key
.
to select the parameter and press enter
• The temperature system switches to waiting mode and a
flashing line "wait" appears on the DIALOG-DISPLAY (LCD).
The start time and actual time are permanently indicated on
the display.
Indication after starting the profile:
DIALOG-DISPLAY (LCD)
1st line:
Setpoint of the programmer
2nd line:
Actual temperature value
at internal control = IntAct:
at external control = ExtAct:
xxx.xx
xxx.xx
3rd line:
Selected profile and the actual section
4th line:
Remaining time of the actual section
Int
VFD-Info-Display:
• Line 1 indicates the actual temperature value.
In the header the corresponding symbol >Int< or >Ext< is
illuminated.
to swap the values in line 1 and line 3.
• Press the key
48
8.3.1.
Interrupting a profile
Interrupting a profile:
to interrupt or continue a profile.
• Press the start/stop key
The setpoint and time period set for the corresponding section
are thus stopped at the values presently achieved.
The instrument is put on hold and the message "pause"
flashes on the DIALOG DISPLAY (LCD).
• A profile can be interrupted or restarted by an external
emergency shut-off (see page 6).
A
CAUTION:
This is not an actual emergency switch-off.
2
1
3
STAND-BY
• The setpoint control and the timer are interrupted by breaking
the contact "AK”.
The instrument is put on hold and the message "Stand-By"
flashes on the DIALOG-DISPLAY (LCD).
Important:
To achieve this, the stand-by condition must first be activated
and the AUTOSTART function turned on
(See page 44).
Warning:
Following a power interruption, it would be possible in this condition for the
instrument to restart automatically. The safety and warning functions of the
instrument should always be used to their fullest capacity.
See Warning page 44
Termination of a profile:
A profile can be terminated by pressing the escape key
The programmer switches back to the Start menu.
• Press the escape key
or
use the cursor keys
.
again to leave the menu
to remain in the Start menu.
The execution of another temperature profile can now be
prepared if necessary.
49
Menu functions
8.4.
Integrated programmer
The integrated programmer allows any desired temperature
program sequences to be realized. Such a temperature
sequence is called profile. A profile consists of individual
sections defined by duration (t:) and target temperature. Target
temperature is the setpoint (T:), that is achieved at the end of a
section. The programmer uses time and temperature difference
values within a section to calculate a temperature ramp.
• Press enter
to select the submenu "Int. Programmer".
to select the desired
• Use the up/down cursor keys
option. Then press enter
to open.
A flashing segment indicates that a number or value needs to
be entered.
Edit
Compile profiles
Display sections
Delete
Delete sections
Set clock
Set the real time on the instrument
Setting clock
The integrated clock allows starting a profile at any date and
time. The clock is preset in the factory.
• Lines 1 to 3:
Check for correctness of the preset date and time and correct
if necessary.
The time is diplayed permanently in line 4.
Examples:
• Use the numerals to set time, date and year and set each
entry with enter
.
• Press escape
50
to return to the previous menu level.
Edit
Compile profiles:
• A flashing segment indicates that a number needs to be
entered.
Under submenu "Edit Profile" enter a profile number.
Six profiles may be stored (nos. 0 to 5).
Examples:
Profile No 1:
Step
• Then programme the desired values for each section.
Use the keypad to set section number, target temperature
.
and time period. Set each entry with enter
When the program is running, only sections having complete
information for target temperature and time period are
considered.
It makes sense, to leave out section numbers in the profile, in
order to use them later for corrections in the profile.
Important:
If a time of 00:00 is set for a profile, the profile is continued
with the next section only after the setpoint temperature
(±0.2 °C) is reached.
Setpoint
Time
• Press escape
Example:
Step
Setpoint
Time
Step
Edit Profile: 1
>Step:
3
Setp:
50:00°C
Time[h.m] 00:02
to return to the previous menu level.
(No.) 1
3
5
6
9
11
14
(°C) 50
50
100
100
80
80
20
(h.m) 00:08 00.02 00:10 01:05 00:10 00:05 00:30
Display sections:
1. Use the cursor keys
to select the submenu
"Step", enter the desired number and press enter
.
or
2. If the submenu „Set“ is selected, section by section can be
shown in ascending order by the P-key
.
3. Each previously set value is displayed.
51
Menu functions
Delete
• A flashing segment indicates that the respective profile
number needs to be entered in which one or more
consecutive sections are to be deleted.
• In lines 2 and 3 of the DIALOG DISPLAY (LCD) enter the
numbers of the sections to be deleted. Press enter
.
• delete
no / yes
Press the P-key
to select the parameter "yes" and press
enter
.
Line 4 indicates the deletion.
Example:
Delete section 8 to section 34 in profile 3.
• Press escape
52
to return to the previous menu level.
8.5.
Analog inputs/outputs
This submenu enables setting of the input and output values for
the programmer input and the temperature recorder outputs of
socket REG+E-PROG (21).
• Press enter
to select the inputs/outputs submenu.
to select the
• Use the up/down cursor keys
desired option and press enter
to open.
Chan.1
voltage output for recorder (V)
Chan.2
voltage output for recorder (V)
Chan.3
current output for recorder (mA)
EPROG external programmer input
• First define the desired output value for channels 1 to 3:
Press the P-key
set with enter
to select the desired output value and
.
Setpoint active setpoint temperature
(Keypad, integr. programmer/ext. programmer)
ActInt
internal actual temperature value
(bath temperature)
ActExt
external actual temperature value
(external sensor)
Power
periodic or intermittent heating or cooling
• Then select the display size for channels 1 to 3:
or
Channel 1 and 2 voltage outputs
Assign the voltage values of 0 V to the lowest and 10 V to the
highest necessary temperature or power rating required as an
output value (°C / %).
Current output channel 3
Assign the current values 0 mA or 4 mA to the lowest and 20
mA to the highest temperature or power rating required as an
output value (°C / %).
The current output offers 2 ranges for selection:
0 to 20 mA and 4 to 20 mA
Select the desired range by pressing the P-key
and set with enter
.
The LCD display changes automatically.
53
Menu functions
0V
10 °C
210 °C
∆ Τ = 200 K
197 °C
Examples:
lowest temperature value: 10 °C
highest temperature value 210 °C
Fig. shows 200 °C scaled to paper width
rise: 50 mV/°C
202 °C
∆Τ=5K
0 mA
4 mA
20 mA
lowest temperature value: 197 °C
highest temperature value: 202 °C
Fig. shows 5 °C scaled to paper width
rise: 2000 mV/°C
EPROG - Input
This input is necessary when the nominal value is to be
determined and set by an external programmer (see page 43 )
1.
REG+E-PROG
1. Connect the external voltage or current source or
programmer to socket (3.1) REG+E-PROG of the instrument.
2. Adjust the menu option >Setpoint< on >EPROG< in the menu
>Konfiguration< (see page 43)
3. The programmer (E-PROG) input of the instrument can be
matched to the output signal of the external voltage or current
source.
Voltage
Current
voltage input
current input
and set with
Select the desired input value with the P-key
enter
.
• "L Value" - Setting the LOW value::
First adjust and set the lowest voltage or current on the
external voltage or current source (e.g. 0 V or 0 mA).
Then after approx. 30 secs enter the corresponding
temperature value (e.g. 20.00°C).on the instrument by
pressing the appropriate buttons on the keypad and press
to set.
enter
• "H Value" - Setting the HIGH value:
First adjust and set the highest voltage or current on the
external voltage or current source (e.g. 10 V or 20 mA).
Then after approx. 30 secs enter the corresponding
temperature value (e.g. 300 °C).on the instrument by pressing
the appropriate buttons on the keypad and press enter
to set.
• Return to the standard display by pressing escape
.
54
Example:
• Set the external voltage or current source output for the
equivalent of 50 °C temperature setpoint.
The value adjusted and set on the external programmer is
displayed in line 4 of the DIALOG-DISPLAY (LCD) for control
purposes (Example: ExtSet: 50.0 °C).
After returning the LCD display to standard display by pressing
the temperature value adjusted and set on the external
voltage or current source is displayed in line 1
(Example: EPROG 50.00 °C).
This EPROG input enables the use of different voltage and
current values as program parameters.
• "L Value" - Setting the LOW value:
1) Adjust and set the lowest desired value on the voltage or
current source resp. (Example A: 1 V).
Wait appr. 30 seconds.
2) Assign a lower temperature threshold value to this
adjusted voltage/current value by pressing the appropriate
buttons on the keypad of the instrument (Example A: 20 °C )
and set by pressing enter
.
°C
300
250
B
200
A
150
100
80
60
40
20
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10
14
V
18 20 mA
• "H Value" - Setting the HIGH value:
1) Adjust and set the highest desired value on the voltage or
current source resp. (Example A: 10 V).
Wait appr. 30 seconds.
2) Assign an upper temperature threshold value to this
adjusted voltage/current value by pressing the appropriate
buttons on the keypad of the instrument
.
(Example A: 200 °C) and set by pressing enter
.
• Return to the standard display by pressing escape
Example B in the diagram serves to illustrate that the end point
values are freely selectable.
Example out of diagram A:
• Adjusting the voltage source for an output of 7.6 V!
Line 4 of the DIALOG-DISPLAY (LCD) shows the externally set
setpoint value. The instrument calculates this value from the rise
angle of the two predecided end points (in example A: 7.6 V
correspond to an external setpoint temperature of 152.0 °C ).
After returning the LCD display to standard display by pressing
, this value is displayed in line 1
escape
(Example: EPROG 152.00 °C).
Notice:
If this adjustment is not correctly performed at two different points, the setpoint
setting will be incorrect.
55
Menu functions
8.6.
Limits
The limits IntMax and IntMin are only valid under external control
(see 7.5.
Internal / external control). They restrict the
temperature of the internal bath to the desired
maximum/minimum, also if the controller would require a
higher/lower temperature for the external system. As a result the
external setpoint may thus not be reached.
When operating the temperature system under external control,
band limiting is active. The preset value determines the maximum
temperature difference between the internal bath and the
external load. This adjustment possibility prevents sensitive
equipment and temperature devices from damage.
Heating and cooling power of the instrument are adjustable.
100 % corresponds to the values in the technical specifications of
the equipment.
• Select the submenu "Limits" with enter
.
• Select the desired option with the up/down cursor keys
.
A flashing digit indicates that a value needs to be entered.
IntMax
see temperature range LHxx
IntMin
see temperature range LHxx
Band
0 to 200 °C
HeatingMax
0 to 100 % in steps of 1 %
CoolingMax
0 to 100 % in steps of 1 %
• Set the newly entered value by pressing enter
.
• Return to the previous menu level by pressing escape
8.7.
.
Interface
The interface parameters are set by selecting the submenu
"Interface" on the temperature system. Normally, this is a onetime-only adjustment.
• Press enter
to select the submenu "Interface".
• Select the desired option with the up/down cursor keys
Enter the desired value for the flashing digit.
Type
Baudrate
Parity
Handshake
RS232 / RS485
4800/9600
none/even/odd
software handshake/hardware handshake
Address
0 to 127
to select the desired parameter and set
• Press the P-key
with enter
.
• Return to the previous menu level with escape
.
56
8.8.
Sensors
ATC - Absolute Temperature Calibration
• Select the submenu "Temp.Sensor" with enter
.
• Select the desired option with the up/down cursor keys
. A flashing digit indicates that a value needs to be
entered i.e. set.
ATC Int:
internal sensor
ATC Ext:
external sensor
• Enter the desired compensating value and set this value by
pressing enter
.
Notice:
ATC Int: Do not alter the factory-setting!
ATC Ext:
serves calibration of an external Pt100 sensor.
ext. Pt100
Calibrated thermometer (TM)
• Immerse the external Pt100 sensor and a calibrated
thermometer together in a calibration bath at 50°C, for
example, and allow the reading to stabilize.
• Read the temperatures of the calibrated thermometer (TM) and
the external Pt100 sensor (T ExtIst) in their respective displays.
Presto: Pt100 sensor (T ExtIst)
Setp.:
xx.00°C
IntAct
xx.00°C
ExtAct: 51.22°C
Control: Intern
• Calculate the temperature difference and enter and set this
difference value as the ATC external compensating parameter.
(Example: ∆T = T ExtIst - T M = 1.22 K)
• Use the keypad to enter the desired compensating value
(e.g. 1.22 °C) and set with enter
.
Important:
The ATC function remains active until reset to 00.00 °C.
57
Menu functions
8.9.
Pump
In this submenu the circulation pump can be turned on
separately, without heating element or cooling unit.
The menu option „Modus“ refers to the filling valve and the
ventilation valve. Depending on the operating status (drain / fill /
sys close) the valves are switched off automatically.
• Press enter
to select the submenu "Pump".
• Select the desired option with the up/down cursor keys
. Enter the desired value for the flashing digit.
Pump
OFF/ON
Mode:
drain / fill / sys close
• Press the P-key
set with enter
to select the desired parameter and
.
• Return to the previous menu level with escape
Explication of terms:
>Mode: System closed<stands for closed, external system.
(Presto principle page 22)
>Mode: drain<. (Chapter „Draining“ see page 33)
In the configuration of this unit the >Mode: fill< means the same
as >Mode: drain<.
58
9.
Troubleshooting guide / Error messages
+

Whenever the microprocessor electronics registers a failure, a complete
shutdown of the temperature system is performed.
The VFD-Info-Display indicates the cause for the alarm in form of a code.
ALARM
CODE 14
The alarm light "
" illuminates and a continuous signal tone sounds.
CODE 02
Defect temperature sensor in refrigeration circuit.
Repair by authorized JULABO service personnel.
CODE 05
Cable of the working temperature sensor interrupted or short-circuited.
CODE 06
Defect of the working or safety temperature sensor.
Working temperature and safety sensors report a temperature difference
of more than 50 K.
CODE 07
Other errors (I2C-BUS errors)
CODE 12
Error in A/D converter.
CODE 13
Sensor in the internal reservoir >RES< is defect
The safety temperature value lies below the working temperature setpoint.
Set the safety temperature to a higher value.
CODE 14
Safety sensor defect >TANK<
The safety temperature value lies below the working temperature setpoint.
Set the safety temperature to a higher value.
The temperature system is operated without bath liquid, or the liquid level
is insufficient. Replenish the bath tank with the bath liquid.
Tube breakage has occured (insufficient filling level due to excessive bath
liquid pumped out). Replace the tubing and replenish the bath tank with
the bath liquid.
The float is defect (e. g., because damaged in transit). Repair by
authorized JULABO service personnel.
CODE 15
External control selected, but external Pt100 sensor not connected.
CODE 16
Heating circuit interrupted.
CODE 17
Heating circuit short-circuited.
CODE 31
Communication between control module RD and instrument interrupted.
59
Troubleshooting guide / Error messages
Warnings without a complete shutdown of the unit
Warning
CODE 40
CODE 03
Excess temperature warning
CODE 04
Low temperature warning
CODE 20
Cooling of the condenser is affected. Clean air-cooled condenser.
Check the flow rate and cooling water temperature on water-cooled
condenser.
CODE 21
Compressor stage 1 does not work.
Check mains circuit breakers F1 and F3, both might have triggered.
Reset circuit breakers if necessary (see below).
CODE 40
Low liquid level warning in the internal reservoir

These messages appear every 10 seconds as long as the compressor is
not switched on although requested by the instrument.
After a short cooling interval, the motor will be automatically reconnected
and the message " CODE XX " no longer appears.
• Press enter
to quit the audible signal.
• After eliminating the malfunction, press the mains power switch off and
on again to cancel the alarm state.
If the unit cannot be returned to operation, contact an authorized JULABO
service station.
Disturbances that are not indicated.
Pump motor overload protection
The pump motor is protected against overloading. After a short cooling
interval, the motor will automatically start running.
Si1
16
A
M
P
16
A
M
P
16
A
M
P
Si2
1
0
60
Si3
16
A
M
P
Si4
Fuses:
The mains fuses are safety cutouts.
LH47
4 Mains circuit breakers (resettable) 16 A
F1 and F3  Compressor
F2 and F4 Heater, Pump
LH50
2 Mains circuit breakers (resettable) 10 A for the pump-motor
4 Mains circuit breakers (resettable) 16 A
Motor protection circuit breaker for compressor motor
10. Electrical connections
Important:
Use shielded cables only.
The shield of the connecting cable is electrically connected to the
plug housing.
5
9
1
6
RS232/RS485 serial interface (3.5)
This port can be used to connect a computer with an RS232 or RS485
cable for remote control of the temperature system.
SERIAL
Pin assignments RS232:
Pin 2
Pin 3
Pin 5
Pin 7
Pin 8
RxD
TxD
0V
RTS
CTS
Receive Data
Transmit Data
Signal GND
Request to send
Clear to send
Pin 1; 4; 6, 9 Reserved - do not use!
Pin assignments: RS485
Pin 3
A
Pin 5
0 VD
Pin 8
B
Signal GND
Pin 1; 2; 6; 7; 9
Reserved - do not use!
RS232 interface cable
Circulator (9-pol)
Pin 2 RxD
Pin 3 TxD
Pin 5 GND
Pin 7 RTS
Pin 8 CTS
⇔
⇔
⇔
⇔
⇔
PC (9-pol)
Pin 3 TxD
Pin 2 RxD
Pin 5 GND
Pin 8 CTS
Pin 7 RTS
Accessories:
Order No.
8 980 073
8 900 110
Description
RS232 interface cable 9-pol./9-pol. , 2,5 m
USB interface adapter cable
61
Electrical connections
Programmer input / temperature recorder output (3.1)
3
2
4
1
5
Analog inputs / outputs see page 53
Pin
Signal
1 Voltage output
Channel 1 0 ... 10 V
2 Voltage output
Channel 2 0 ... 10 V
3 GND for outputs
0V
4 Programmer input EPROG
0 to 10 V / 0 to 20 mA
5 Current output
Channel 3 0 to 20 mA / 4 to 20 mA
6 GND for Progammer
0V
6
REG+E-PROG
Alarm output (3.3)
(for external alarm signal)
This potential-free change-over contact is activated in case of an
alarm when pins 2 and 3 are connected.
2
3
Switching capacity
Switching voltage
Switching current
1
ALARM
2
1
3
4
max.
max.
max.
30 W / 40 VA
125 V∼/−
1A
Socket for external Pt100 sensor (3.4)
Pin assignment:
ext. Pt100
Pt100
Shield
Plug
2
1
3
4
Look on
soldering side.
62
Pin
Signal
1
2
3
4
I+
U+
UI-
The shield of the connecting cable is electrically connected to the
plug housing and the sensor tube.
Stand-by input (3.2)
(for external emergency switch-off)
Pin assignment:
Pin
1
2
3
Use shielded cables only.
Activate the stand-by input:
AK
2
3
1
STAND-BY
Signal
not connected
5 V / DC
0V
• Under menu item Stand-by, set the parameter to "yes"
(see page 44).
• Connect an external contact 'AK' (e.g. for emergency switch-off) or
an alarm contact of the superordinated system.
In case the connection between Pin 2 and Pin 3 is interrupted by
opening the contact 'AK', a complete shutdown of the circulation pump
and heater is effected, and the unit enters the condition "OFF".
As long as the contact remains open, line 4 of the DIALOG-DISPLAY
(LCD) flashes and displays the message "STAND-BY".
If the contact is reclosed, the instrument returns to the stand-by state
and "OFF" is displayed.
Additional tips for using the STAND-BY input:
The stand-by function can be used in conjunction with the
AUTOSTART feature (see page 44)
1. If the Autostart function is NOT turned ON, the stand-by input
should be used as described above.
2. If the Autostart funcion is enabled, the instrument will revert back to
the original method of entering the setpoint (i.e. keypad, RS232,
Analog input, etc.).
A
2
1
3
STAND-BY
• Entering the setpoint with the keypad.
As described above, a bipolar shut-down is accompanied by the
"STAND-BY" display and the OFF state. The programmable
controller starts again when the contact is reclosed. The
temperature of the bath liquid changed during the STAND-BY state.
• Entering the setpoint with the programmer (see pages 47 and 49).
The display "STAND-BY" appears. The setpoint value and the time
are both held at the current value. The temperature of the bath
liquid will be held constant at this temperature. The programmer
continues once the contact is reclosed.
Warning: this is not an actual shutoff feature.
63
Remote control
Connector for removable control module RD (3.6)
Extension cable for operating device RD:
Order No. 8 980 126
2 m long
Order No. 8 980 127
5 m long
Control connector (10)
Output voltage is applied when the unit runs,
for example after pressing the start/stop key
.
Output voltage: 230 V∼ / max. 0.1 A
11. Remote control
11.1. Setup for remote control
5
9
1
RS232
RS485
6
Select the "Configuration" submenu and select the option "Setpoint"
to define the interface (see page 43).
The interface parameters are set by selecting the submenu
"Interface" on the instrument. Normally, this is a one-time-only
adjustment. (Selecting and setting menu items, see page 56.)
Factory settings:
RS232
BAUDRATE
PARITY
HANDSHAKE
4800 bauds
even parity
Protocol RTS/CTS
(hardware handshake)
Data bits
7
Stop bit
1
Like all parameters which can be entered through the keypad,
interface parameters are stored in memory even after the
instrument is turned off.
64
11.2. Communication with a PC or a superordinated data system
Suitable terminal programs for communicating with a PC are:
• MS-Windows
- TERMINAL.EXE (included with MS-Windows).
If the temperature system is put into remote control mode via the
configuration level, the display will read
"R -OFF-" = REMOTE STOP.
R
S xx.xx
ID
0
In general, the computer (master) sends commands to the instrument
(slave). The instrument sends data (including error messages) only
when the computer sends a query.
D A transfer sequence consists of:
• address (RS485 interface only)
• command
• space (⇔; Hex: 20)
• parameter (the character separating decimals in a group is the
period)
• end of file (↵; Hex: 0D)
The commands are divided into in or out commands.

in commands:
asking for parameters to be displayed
out commands:
setting parameters
The out commands are valid only in remote control mode.
When the RS485 interface is used, the three-digit instrument
address stands in front of each command.
(example: address Ad32 = A032)
Examples:
Command to set the working temperature to 55.5 °C
out_sp_00 ⇔ 55.5↵
A032_out_sp_00 ⇔ 55.5↵
Command to ask for the working temperature :
in_sp_00↵
A032_in_sp_00↵
Response from the instrument:
55.5↵
A032_55.5↵
65
Remote control
11.3. List of commands
When the RS485 interface is used, the instrument address stands in front of each command
(Axxx_).
in commands: Asking for parameters or temperature values to be displayed.
Command
Parameter
Response of instrument
version
none
Number of software version (V X.xx)
status
none
Status message, error message (see page 69)
in_pv_00
none
Actual bath temperature.
in_pv_01
none
Heating power being used (%).
in_pv_02
none
Temperature value registered by the external Pt100 sensor.
in_pv_03
none
Temperature value registered by the safety sensor. >TANK<
in_pv_05
none
Pump pressure in bar.
in_sp_00
none
Working temperature
in_sp_03
none
High temperature warning limit
in_sp_04
none
Low temperature warning limit
in_sp_05
none
Setpoint temperature of the external programmer
(socket 3.1 - REG+E-PROG) .
in_sp_07
none
Pump pressure stage
in_hil_00
none
Max. cooling power (%).
in_hil_01
none
Max. heating power (%).
in_mode_02
none
Identification type:
.
0 = no identification
1 = single identification
2 = continual identification
in_mode_03
in_mode_04
none
none
Type of the programmer input:
0 = Voltage
0 V to 10 V
1 = Current
0 mA to 20 mA
Internal/external temperature control:
0 = Temperature control with internal sensor.
1 = Temperature control with external Pt100 sensor.
66
Command
Parameter
Response of instrument
in_mode_05
none
Temperature system in Stop/Start condition:
0 = Stop
1 = Start
in_mode_08
none
Adjusted control dynamics
0 = aperiodic
1 = standard
in_par_01
none
Time constant of the external bath.
in_par_02
none
Internal slope.
in_par_03
none
Time constant of the internal bath.
in_par_04
none
Band limiting (max. difference between the temperatures in the
internal bath and external system).
in_par_06
none
Xp control parameter of the internal controller.
in_par_07
none
Tn control parameter of the internal controller.
in_par_08
none
Tv control parameter of the internal controller.
in_par_09
none
Xp control parameter of the cascade controller.
in_par_10
none
Proportional portion of the cascade controller.
in_par_11
none
Tn control parameter of the cascade controller.
in_par_12
none
Tv control parameter of the cascade controller.
in_par_13
none
Adjusted maximum internal temperature of the cascade
controller.
in_par_14
none
Adjusted minimum internal temperature of the cascade
controller.
out commands: Setting parameters or temperature values.
Command
Parameter
Response of instrument
out_mode_01
0
Use working temperature
out_mode_02
0
No identification.
Temperature control by using the stored parameters.
67
Remote control
Command
Parameter
Response of instrument
out_mode_02
1
Single identification of controlled system after the next start.
out_mode_02
2
Continual identification of controlled system whenever a new
setpoint is to be reached.
out_mode_04
0
Temperature control of internal bath.
out_mode_04
1
External control with Pt100 sensor.
out_mode_05
0
Stop the unit = R –OFF-.
out_mode_05
1
Start the unit.
out_mode_08
0
Set the control dynamics - aperiodic
out_mode_08
1
Set the control dynamics - standard
out_sp_00
xxx.x
Set working temperature.
out_sp_03
xxx.x
Set high temperature warning limit
.
out_sp_04
xxx.x
Set low temperature warning limit
.
out_sp_07
x
Set the pump pressure stage (1 ... 5).
out_hil_00
-xxx
Set the desired maximum cooling power (0 % to 100 %).
Note: Enter the value with a preceding negative sign!
out_hil_01
xxx
Set the desired maximum heating power (10 % to 100 %).
out_par_04
xxx
Band limiting during external control.
Setting the maximum difference between the temperatures
in the internal bath and external system.
out_par_06
xxx
Xp control parameter of the internal controller.
out_par_07
xxx
Tn control parameter of the internal controller.
out_par_08
xxx
Tv control parameter of the internal controller.
out_par_09
xxx
Xp control parameter of the cascade controller.
out_par_10
xxx
Proportional portion of the cascade controller.
out_par_11
xxx
Tn control parameter of the cascade controller.
out_par_12
xxx
Tv control parameter of the cascade controller.
out _par_13
xxx
Maximum internal temperature of the cascade controller.
out _par_14
xxx
Minimum internal temperature of the cascade controller.
68
11.4. Status messages / error messages
The instrument sends data (including error messages) only when the computer sends a query.
Status messages
Description
00 MANUAL STOP
Presto in "OFF" state.
01 MANUAL START
or
01 MANUAL START,DEGASING
Presto in keypad control mode
or
Presto in keypad control mode and degasifying
active
02 REMOTE STOP
Presto in "r OFF" state.
03 REMOTE START
or
03 REMOTE START,DEGASING
Presto® in remote control mode.
or
Presto in remote control mode and degasifying active
Error messages
Description
-02 REFRIGERATOR ALARM
Defect temperature sensor in refrigeration circuit.
-03 EXCESS TEMPERATURE WARNING
High temperature warning "
-04 LOW TEMPERATURE WARNING
-07 I2C-BUS ERROR
Low temperature warning "
".
Working temperature sensor short-circuited or
interrupted.
Sensor difference alarm.
Working temperature and safety sensors report a
temperature difference of more than 50 K.
Internal error when reading or writing the I2C bus.
-08 INVALID COMMAND
Invalid command.
-09 COMMAND NOT ALLOWED IN
CURRENT OPERATING MODE
Invalid command in current operating mode.
-10 VALUE TOO SMALL
Entered value too small.
-11 VALUE TOO LARGE
Entered value too large.
-12 TEMPERATURE MEASUREMENT
ALARM
-13 WARNING : VALUE EXCEEDS
TEMPERATURE LIMITS
Error in A/D converter.
-05 WORKING SENSOR ALARM
-06 SENSOR DIFFERENCE ALARM
-14 TEMPERATURE/LEVEL ALARM
".
Value lies outside the adjusted range for the high
and low temperature warning limits. But value is
stored.
Safety temperature alarm
69
Cleaning the unit
Error messages
Description
-16 TRIAC/RELAY CONNECTION OPEN
Low level alarm.
External control selected, but external Pt100 sensor
not connected.
Heating circuit interrupted.
-17 TRIAC SHORTED
Heating circuit short-circuited.
-20 WARNING: CLEAN CONDENSOR OR
CHECK COOLING WATER CIRCUIT
OF REFRIGERATOR
Cooling of the condenser is affected.
Clean air-cooled condenser.
Check the flow rate and cooling water temperature
on water-cooled condenser.
Compressor stage 1 does not work.
Check mains circuit breakers F1 and F3, both might
have triggered.
Reset circuit breakers if necessary.
External stand-by contact is open.
Stand-by input - see pages 44 and 6.
Communication between remote module RD and
instrument interrupted.
Low liquid level warning in the internal reservoir.
-15 EXTERNAL SENSOR ALARM
-21 WARNING: COMPRESSOR STAGE 1
DOES NOT WORK
-26 WARNING: STAND-BY PLUG IS
MISSING
-31 INTERNAL COMMUNICATION ERROR
-40 NIVEAU LEVEL WARNING
12. Cleaning the unit
Caution:
Always turn off the unit and disconnect the mains cable from the power source
before cleaning the unit.
Prevent humidity from entering into the circulator.
Electrical connections and any other work must be performed by qualified
personnel only.
Cleaning the unit outside
•
Clean the outside of the unit using a wet cloth and low surface
tension water (e.g., soap suds).
Before applying a cleaning or decontamination method different from the
one recommended by JULABO, the user has to make sure with the
manufacturer, that the planned method does not damage the unit.
70
Caution:
S 20.00
ID
0
•
Choose the detergent according to the bath liquid which is used.
E.g. Ethanol, Silicon remover can be used.
•
Take care the room where cleaning takes place is well ventilated.
•
Set the working temperature setpoint.
Recommendation: 20 °C
Cleaning the inside:
If you change the bath liquid or want to use a different
one, carefully clean the parts in contact with the bath
liquid. The heat exchanger, internal reservoir,
connecting tubing and external system should be
rinsed several times using cleaning liquid.
Preparations:
1. Drain the temperature system.
See chapter 5.9. Draining
2. If only the Presto temperature system is to be
cleaned, connect the pump connectors (13, 14)
using a tubing.
3. Connect a tubing to the connector (16) "Reservoir
extern". First hold the end of the tubing towards
position 16.1, to prevent the cleaning liquid from
flowing down instantly.
4. Hold the tubing from the overflow connector (15)
into a suitable vessel.
71
Cleaning the unit
Cleaning is performed in two steps.
First rinse the internal reservoir, the tubing lines and the heat
exchanger.
As second step, carefully remove the cleaning liquid.
1. Cleaning internal reservoir, tubing lines and heat exchanger:
Pump
>Pump
OFF
Mode: Sys close
• Fill the temperature system with cleaning liquid.
See chapter 5.7. Filling
• In the submenu >Pump< the unit has to be adjusted on the
operating status >Sys close< .
• Set the working temperature setpoint.
Recommendation: 20 °C
and allow the liquid to be pumped
• Press the start key
through the unit for about 15 minutes.
Pump
>Pump
Mode:
OFF
drain
.
• Press the stop key
Drain the temperature system.
In the submenu >Pump< adjust the menu option >Mode< on
>drain< stellen.
See chapter 5.9. Draining
2. Removing the cleaning liquid:
72
•
Switch on the unit with the mains switch!
The venting valve remain open.
•
Blow through the temperature system with dry, warm air.
The air is fed in turns through the different connectors on the
temperature system.
Begin with the connectors (15, 16) leading to the internal
reservoir.
Then blow through the pump connectors (13, 14) leading to the
heat exchanger and the drain port (8) on the front.
•
Allow the system to dry (wait until the humidity evaporates).
Then reconnect the temperature system or close the connectors
according the intended use.
Tighten the drain screw on the front.
13. Maintaining / repairing the unit
Caution:
Always turn off the unit and disconnect the mains cable from the power source
before cleaning the unit.
Prevent humidity from entering into the circulator.
Electrical connections and any other work must be performed by qualified
personnel only.
Maintaining the cooling performance
Air-cooling:
To maintain the full cooling performance, clean the
condenser from time to time.
• Switch off the unit, disconnect mains power cable.
• Hold the venting grid, pull out and remove.
• Clean the ribbed condenser with a vacuum cleaner.
• Replace the venting grid.
• Switch on the unit.
Water-cooling:
To maintain the full cooling performance, clean the filter in
the cooling water entry from time to time.
•
Switch off the unit, disconnect mains power cable.
•
Interrupt the cooling water supply.
•
Disconnect the tubing from the inlet "IN" (18) and
remove the dirty filter.
•
Clean the filter.
•
Replace the filter and reconnect the tubing.
•
Open the cooling water supply.
•
Check the tubing connection for tightness.
•
Unit is ready to operate.
73
Maintaining / repairing the unit
The unit is designed for continuous operation under normal
conditions. Periodic maintenance is not required.
Repairs
Before asking for a service technician or returning a JULABO
instrument for repair, please contact an authorized JULABO
service station.
When returning the unit:
•
Empty completely, remove the expansion tank, close tightly
the connections with nuts and closing caps.
• Careful and appropriate packing is important.
• During transport the unit has to stand upright. Mark the
packing correspondingly.
• When returning a unit, take care of careful and adequate
packing. JULABO is not responsible for damages that might
occur from insufficient packing.
JULABO reserves the right to carry out technical modifications
with repairs for providing improved performance of a unit.
74
14. WARRANTY PROVISIONS
The following Warranty Provisions shall apply to products sold in North America by Julabo (“Seller”) to the entity
shown as buyer (“Buyer”) on Seller’s invoice.
1.
Initial Warranty. Upon Seller’s receipt of payment in full for the products and subject to Buyer’s
compliance with the terms of sale and any other agreement with Seller relating to the products, Seller warrants to
the Buyer that the products manufactured by the Seller are free from defects in material and workmanship for a
period not to exceed two (2) years or ten thousand (10,000) hours of operation, whichever comes first, from the
date the product is shipped by Seller to Buyer (the “Initial Warranty”).
2.
EXCLUSION OF ALL OTHER EXPRESS WARRANTIES; EXCLUSION OF ALL IMPLIED
WARRANTIES. OTHER THAN THE INITIAL WARRANTY, NO OTHER EXPRESS WARRANTIES ARE MADE.
ALL IMPLIED WARRANTIES OF EVERY TYPE AND KIND, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE, ARE
EXCLUDED IN ALL RESPECTS AND FOR ALL PURPOSES. SELLER DISCLAIMS AND MAKES NO IMPLIED
WARRANTIES WHATSOEVER.
3.
Exclusions. The Initial Warranty does not include damage to the product resulting from
accident, misuse, improper installation or operation, unauthorized or improper repair, replacement or alteration
(including but not limited to repairs, replacements, or alterations made or performed by persons other than
Seller’s employees or authorized representatives), failure to provide or use of improper maintenance,
unreasonable use or abuse of the product, or failure to follow written installation or operating instructions. Buyer
must return the product’s record of purchase to the Seller or one of Seller’s authorized representatives within
thirty (30) days of the date the product is shipped by Seller to Buyer in order to make a claim under the Initial
Warranty. Notwithstanding anything contained herein to the contrary, all glassware, including but not limited to
reference thermometers, are expressly excluded from the Initial Warranty.
4.
Buyer’s sole remedies; Limitations on Seller’s Liability. Buyer’s sole and exclusive remedy
under the Initial Warranty is strictly limited, in Seller’s sole discretion, to either: (i) repairing defective parts; or (ii)
replacing defective parts. In either case, the warranty period for the product receiving a repaired or replaced part
pursuant to the terms of the Initial Warranty shall not be extended. All repairs or replacements performed by
Seller pursuant to these Warranty Provisions shall be performed at Seller’s facility in Allentown, Pennsylvania,
U.S.A. or Vista, California, U.S.A or at the facility of an authorized representative of Seller, which location shall be
determined by Seller in its sole discretion; provided, however, that Seller may, in its sole discretion perform such
repairs or replacements at Buyer’s facility in which case Buyer shall pay Seller’s travel, living and related
expenses incurred by Seller in performing the repairs or replacements at Buyer’s facility. As a condition
precedent to Seller’s obligation to repair or replace a product part under the Initial Warranty, Buyer shall (i)
promptly notify Seller in writing of any such defect; (ii) shall have returned the product’s record of purchase to
Seller or to one of Seller’s authorized representatives within thirty (30) days of the date the product is delivered to
Buyer; and (iii) assist Seller in all respects in its attempts to determine the legitimacy and basis of any claims
made by or on behalf of Buyer including but not limited to providing Seller with access to the product to check
operating conditions. If Buyer does not provide such written notice to Seller within the Initial Warranty period or
fails to return the product’s record of purchase as set forth above, Seller shall have no further liability or obligation
to Buyer therefore. In no event shall Seller’s liability under the Initial Warranty exceed the original purchase price
of the product which is the subject of the alleged defect.
5.
THE REMEDIES PROVIDED IN THE INITIAL WARRANTY ARE THE SOLE AND EXCLUSIVE
REMEDIES AVAILABLE TO THE BUYER. NOTWITHSTANDING ANYTHING TO THE CONTRARY
CONTAINED HEREIN, AND EVEN IF THE SOLE AND EXCLUSIVE REMEDIES FAIL OF THEIR ESSENTIAL
PURPOSE FOR ANY REASON WHATSOEVER, IN NO EVENT SHALL SELLER BE LIABLE FOR BUYER’S
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WARRANTY PROVISIONS
MANUFACTURING COSTS, LOST PROFITS, GOODWILL, OR ANY OTHER SPECIAL, INDIRECT, PUNITIVE,
INCIDENTAL OR CONSEQUENTIAL DAMAGES TO BUYER OR ANY THIRD PARTY AND ALL SUCH
DAMAGES ARE HEREBY DISCLAIMED.
6.
Assignment. Buyer shall not assign any of its rights or obligations hereunder without the prior
written approval of Seller; provided, however, that if Buyer is a distributor of Seller, the rights and obligations of
Buyer under these Warranty Provisions shall inure to the benefit of and be binding upon Buyer’s customers who
provide the product’s proof of purchase to Seller pursuant to the terms set forth herein. Seller may assign any or
all of its rights or obligations hereunder without Buyer’s prior consent.
7.
Governing Law. The Warranty Provisions and all questions relating to their validity,
interpretation, performance, and enforcement shall be construed in accordance with, and shall be governed by,
the substantive laws of the Commonwealth of Pennsylvania without regard to its principles of conflicts of law.
8.
Waiver. Any failure of the part of Seller to insist on strict compliance with the Warranty Provisions
shall no way constitute a waiver of such right. No claim or rights arising out of a breach of the Warranty Provisions
by Buyer may be discharged in whole or in part by a waiver of the claim or right, unless the waiver is in writing
signed by an authorized representative of Seller. Seller’s waiver or acceptance of any breach by Buyer of any
provisions of the Warranty Provisions shall not constitute a waiver of or an excuse for nonperformance as to any
other provision of the Warranty Provisions nor as to any prior or subsequent breach of the same provision.
9.
Freight. Buyer will arrange and pay for shipping and handling charges for the unit to be returned to
the Seller.Seller will arrange and pay for shipping and handling for the return of the unit to the Buyer.
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