Hach LT 200 User manual
DOC022.98.00742.JAN06
LT 200
DOC022.98.00742.JAN06
Thermostat LT 200
USER MANUAL (english)
January 2006, Edition 2
© Hach Lange GmbH, 2006. All rights reserved. Printed in Germany.
CK/SK
42
43
Table of Contents
Section 1 Specifications .................................................... 45
Section 2 General Information .......................................... 47
2.1 Safety Information ..............................................................47
2.1.1 Use of Hazard Information ........................................47
2.1.2 Precautionary Labels ................................................48
2.1.3 Warning .....................................................................48
2.2 General Product Information ..............................................49
2.3 Important information about the manual ............................49
2.3.1 Safety Against Risk of Fire ........................................50
2.3.2 Chemical and Biological Safety .................................50
2.4 Overview of Product/Function ............................................51
2.5 Disposal in accordance with EU directive 2002/96/EC ......51
Section 3 Installation ......................................................... 53
3.1 Unpacking the Instruments ................................................53
3.2 Front- and back view ..........................................................54
Section 4 Operation ........................................................... 57
4.1 Software Menu ...................................................................57
Section 5 Start up .............................................................. 59
5.1 Starting up ..........................................................................59
5.2 Routine operation ...............................................................61
5.2.1 Thermometer symbol ................................................61
5.2.2 Clock symbol .............................................................62
5.2.3 Beep functions ..........................................................62
5.2.4 Stop function .............................................................62
5.3 Selecting the program ........................................................63
5.4 User programs ...................................................................65
5.5 Language ...........................................................................66
Section 6 Maintenance ...................................................... 67
6.1 Cleaning the Instrument .....................................................67
6.2 Instrument test ...................................................................68
6.3 Changing the protective covers .........................................68
Section 7 Troubleshooting ................................................ 71
45
Section 1 Specifications
Specifications are subject to change without
notice.
Performance Specifications
Type Thermostat with one heating block or two separate
heating blocks with integrated protective lid for
heating cuvette tests and reaction vessels.
Temperature programs
COD program (148 °C, 120 min)
100 °C program (100 °C, 30, 60, 120 min)
40 °C program (40 °C, 10 min)
and freely selectable 37–150 °C (no cooling)
Timer programs freely selectable 0–480 min; acoustic signal when the
set time expires
Heating rate from 20 °C to 148 °C in 10 min (to DIN 38409-44)
Temperature stability +/- 1 °C
Number of cuvettes
LTG082.xx.10xxx: 9 x 13 mm diameter, 2 x 20 mm
diameter
LTG082.xx.21xxx:
left: 15 x 13 mm diameter
right: 6 x 13 mm diameter, 4 x 20 mm diameter
Physical and Environmental Specifications
Width 250 mm
Height 145 mm
Depth 310 mm
Weight LTG 082.xx.10xxx : 2 kg instrument, 3.5 kg packed
LTG 082.xx.21xxx : 2.8 kg instrument, 4.3 kg packed
Ambient conditions Operating temperature: 10–45 °C
Storage temperature: -40–60 °C
Relative humidity: max. 90%, non-condensing
Additional technical data
Mains connection 115/230 V, +5%/-15%, 50/60 Hz, protection class I
Power input LTG 082.xx.10xxx : 115 V: 300 VA; 230 V: 450 VA
LTG 082.xx.21.xxx : 115 V: 600 VA; 230 V: 900 VA
Safety checks CE, GS and cTUVus
Guarantee 2 years
46
Specifications
47
Section 2 General Information
2.1 Safety Information
Please read this entire manual before
unpacking, setting up, or operating this
equipment. Pay attention to all danger and
caution statements. Failure to do so could result
in serious injury to the operator or damage to
the equipment.
To ensure that the protection provided by this
equipment is not impaired, do not use or install
this equipment in any manner other than that
specified in this manual.
2.1.1 Use of Hazard Information
DANGER
Indicates a potentially or imminently
hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation
that may result in minor or moderate injury.
Important Note: Information that requires
special emphasis.
Note: Information that supplements points in the
main text.
48
General Information
2.1.2 Precautionary Labels
Read all labels and tags attached to the
instrument. Personal injury or damage to the
instrument could occur if not observed. A
symbol, if noted on the instrument, will be
included with a danger or caution statement in
the manual.
2.1.3 Warning
DANGER
The ventilation slits in the lid must not be
covered, otherwise overheating may occur.
The protective lids must always be closed
during operation.
The surface of the heating blocks is thermally
insulated. Never insert a finger into an opening,
as there is a danger of suffering burns.
The LT 200 thermostat should only be
connected to a socket outlet with earthing
contact. Be sure to use an undamaged cable.
This symbol, if noted on the instrument, references the instruction manual
for operation and/or safety information.
Electrical equipment marked with this symbol may not be disposed of in
European public disposal systems after 12 August of 2005. In conformity
with European local and national regulations (EU Directive 2002/96/EC),
European electrical equipment users must now return old or end-of life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or
supplier for instructions on how to return end-of-life equipment,
producer-supplied electrical accessories, and all auxiliary items for proper
disposal.
This symbol, when noted on the product, indicated that the marked item
can be hot and should not be touched without care.
49
General Information
2.2 General Product Information
The thermostat has been designed in
accordance with the current state of the
technology and the acknowledged safety
regulations.
The manufacturer certifies that this instrument
was tested thoroughly, inspected and found to
meet its published specifications when it was
shipped from the factory.
Nevertheless, under certain circumstances
users may be at risk, or the proper functioning of
the instrument may be impaired.
2.3 Important information about the manual
The manual contains all the information needed
to enable the instrument to be operated without
any problems throughout its lifespan.
Such adherence results in less down-time and
lower repair costs, and increases the lifespan of
the instrument.
Copyright
The copyright to this User Manual remains with
the manufacturer.
The Manual contains instructions, notes and
drawings of a technical nature, which may not,
either in full or in part, be
•duplicated
•disseminated
•used without authorization for competitive
purposes or
communicated in any other way.
50
General Information
2.3.1 Safety Against Risk of Fire
Certain electrical circuits within this equipment
are protected by fuses against over-current
conditions. For continued protection against a
risk of fire, replace fuses only with the same
type and rating specified.
2.3.2 Chemical and Biological Safety
DANGER
Handling chemical samples, standards and
reagents can be dangerous. Users of this
product are advised to familiarize
themselves with safety procedures and the
correct use of chemicals, and to carefully
read all relevant Material Safety Data Sheets.
Normal operation of this instrument may involve
the use of hazardous chemicals or biologically
harmful samples.
•The user must observe all cautionary
information printed on the original solution
containers and safety data sheet prior to
their use.
•All waste solutions must be disposed in
accordance with local and national law.
51
General Information
2.4 Overview of Product/Function
The LT 200 thermostat can heat solutions in
round cuvettes of various sizes at 37–150 °C for
a period of 0–480 minutes.
The LT 200 thermostat has one
temperaturecontrolled heating block or two
separate ones.
The small openings (diameter 13 mm) in the
heating block are suitable for the HACH LANGE
cuvette tests, e.g. COD and phosphate
cuvettes. The larger openings (diameter 20 mm)
are intended for reaction vessels. Sample
preparation, e.g. the sample digestion for a
number of cuvette tests, is carried out in the
reaction vessels.
The actual temperatures of the heating blocks
and the remaining time are permanently visible
in the digital display.
The LT 200 thermostat has 3 permanent and 6
freely programmable temperature programs.
The LT 200 thermostat comes with a
multi-language support.
2.5 Disposal in accordance with EU directive
2002/96/EC
How to prepare an electrical instrument for
disposal:
•remove any cuvettes that are still in the
instrument
52
General Information
53
Section 3 Installation
DANGER
Only qualified personnel should conduct the
tasks described in this section of the
manual.
3.1 Unpacking the Instruments
1. Remove the LT 200 thermostat and
accessories from the shipping container.
2. Do not push any loose objects under the
instrument, as this could affect its stability.
3. Inspect each item for any damage that may
have occurred during shipment
4. Do not send the instrument back without
previous arrangement.
54
Installation
3.2 Front- and back view
Figure 1 Front view of the LT 200 thermostat
1Protective lid 5Touch-sensitive Keys
220 mm digestion cuvettes 6Display
313 mm cuvette tests 7Left heating block
4Right heating block
55
Installation
Figure 2 Back view of the LT 200 thermostat
1On/Off switch 3Nameplate
2Plug in power supply
56
Installation
57
Section 4 Operation
4.1 Software Menu
SELECT BLOCK
LEFT/RIGHT Select the heating block.
SELECT PROGRAM
100 ° Selection of 100 °C temperature program. Heats
cuvettes for 30, 60, or 120 minutes at 100 °C.
DIGESTION PERIOD?
120’/60’/30 Selection of temperature time.
100 °C: 100 °C 60’
OK
For example, the “100 °C, 60 minutes” setting is
needed to digest samples using the LCW 902
Crack Set. Start the program with OK.
SELECT PROGRAM
COD
Selection of COD Temperature program. Heats
cuvettes for 2 hours at 148 °C. In the cooling
phase, 4 beeps indicates that the cuvettes have
cooled to 80 °C. Remove and carefully invert the
cuvettes several times, before allowing them to
cool further in a rack.
COD: 148 °C 120’
OK Start the program with OK.
SELECT PROGRAM
40 ° Selection of 40 °C temperature program. Heats
cuvettes for 10 minutes at 40 °C.
40 °C: 40 °C 10’
OK Start the program with OK.
SELECT PROGRAM
PRG1 Programming a user-specific temperature program
(5.4 User programs auf Seite 65).
58
Operation
59
Start up
Section 5 Start up
5.1 Starting up
Place the thermostats on a stable, level,
heat-resistant surface.
Plug one end of the power supply into the back
of the thermostat, below the power switch, and
plug the other into an earthed mains power
socket (115/230 Volt +5%/-15% / 50/60 Hz).
Switch on the thermostat by pressing the power
switch on the back.
Note: Do not switch the instrument off and on in rapid
succession. Always wait about 20 seconds before
switching the instrument on again, otherwise you may
damage the electronic and mechanical systems.
The first time the instrument is turned on, the
language selection screen will appear
(section 5.5 on page 66).
After initialization the instrument is ready for
operation.
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