Hitachi L-8900 User manual

SERVICE MANUAL
FOR
L-8900 HIGH SPEED AMINO ACID ANALYZER
Hitachi High-Technologies Corporation
Copyright C Hitachi High-Technologies Corporation 2005.
All rights reserved. Printed in Japan. Part No. 852-9051 TR-F (HT-HMS056003)

PREFACE
This Service Manual is designed for Model L-8900 High Speed
Amino Acid Analyzer, exclusively used for engineers approved by
our company, to catch and diagnose trouble symptom and remedy
the instrument as soon as possible.
If trouble can be expected, remedy is easy, however, unexpected
trouble may occur generally. Read this Service Manual to learn the
structure, judge correctly, and remedy properly.
Wrong maintenance, repair may cause safety problems. In early
period after the delivery, repair is often requested by customers
though it is caused by inexperience of operation or misoperation.
Always carry this Manual, read carefully before performing
maintenance or repair work to accomplish correct work.
ABOUT THIS MANUAL
Cautions, Safety cautions, Warning labels are described on the
opening pages of this Manual. Read carefully and understand the
contents completely before performing maintenance and repair
work.
Be sure to read Cautions (Cautions 1 - 4) on the opening pages,
and SAFETY SUMMARY (Safety 1 - 13) first.

IMPORTANT - 1
IMPORTANT
CE Conformity Marking
This instrument, considering use in Europe, satisfies the following
demands, has CE conformity marking.
1 EMC Demand
This instrument conforms to EMC order 89/336/EEC, has CE
conformity marking, is designed to safety EN61326 (1997) and its
amendment 1 (1998), amendment 2 (2000).
This instrument is classified to Class A of EN61326.
Therefore, this instrument cannot be used in general home
facilities, and in facilities directly connected to low voltage power
net to provide power to buildings to be used for family houses.
This instrument also satisfies Table 1 "Minimum immunity test
demand items", Table 2 "Continuous operation without monitoring".
However, if this instrument is used near a strong electromagnetic
source, noise may affect the performances and functions.
2 Safety Demand
This instrument conforms to LVD order 73/23/EEC, has CE
marking, is designed to satisfy EN61010-1 (2001).
This instrument is classified to Class 1, Contamination degree 2 of
EN61010, so, use in proper environment and proper grounding are
absolutely required.

IMPORTANT - 2
Precautions on Electromagnetic Disturbances
Electromagnetic Interference by This Instrument to the Surroundings
Operation of this instrument may cause electromagnetic
interference on the electronic or electric equipment nearby such as
a radio or TV set.
Only those connection cables that are specified in the instruction
manual are allowed to connect the instrument to configure your
desired system. Electromagnetic interference is minimized by
using the specified cables. However, it is not meant to guarantee
that this instrument may not cause any electromagnetic
interference.
If you suspect that this instrument is responsible for any
electromagnetic interference, turn off the power of this instrument
to check whether or not the disturbance disappears partially or
completely. If disappeared, carry out one or more of the following
trials to remedy the troubled equipment.
•Change the direction of antenna of radio or TV set.
• Make either the troubled equipment or the instrument apart
from this instrument.
• If the same power line is shared, use independent power lines
for the instrument and for the troubled equipment such as a
radio or TV set.

IMPORTANT - 3
Electromagnetic Interference by the Surroundings to This Instrument
Operation of this instrument in the vicinity of equipment that
generates strong electric or magnetic fields may be responsible for
a poor performance or malfunction of the instrument through noise
induced by those strong fields.
Only those connection cables that are specified in the instruction
manual are allowed to connect the instrument to configure your
desired system. Electromagnetic interference is minimized by
using the specified cables. However, it is not meant to guarantee
that this instrument may be free from any electromagnetic
interference.
If you suspect that a specific type of equipment is responsible for
any electromagnetic interference on this instrument, turn off the
power of the equipment to check whether or not the disturbance
disappears partially or completely. If disappeared, carry out one
or more of the following trials to remedy the electromagnetic
disturbance on this instrument.
•Change the direction of this instrument.
• Make this instrument apart from the equipment suspected to be
the source of the disturbance.
• If the same power line is shared, use independent power lines
for this instrument and for the equipment suspected to be the
source of the disturbance.
•Check that no other equipment that is linked to this instrument
suffers electromagnetic interference.

IMPORTANT - 4
WARRANTY ON PRODUCT
Model L-8900 Amino Acid Analyzer is guaranteed as follows, only
when it is used following the contents of the instruction manual,
based on the specifications described in the instruction manual.
No guarantee is offered on express or implied quality, performance,
merchandise value, or any fitness for special purpose to use.
No guarantee is offered when information, oral or written, give by a
sales division, agency or employee without the specified approval,
does not agree with the performance of the product.
No compensation is offered for damages of data and application
software caused by trouble o this instrument.
(1) Scope of Guarantee
If the instrument fails by manufacturing defect of our company,
only repair of the instrument is performed without charging.
A substitute part may be used for repair, or replacement with
an equivalent product may be made instead of repair. Market-
supply products such as personal computer and a printer,
which are frequently updated in performance, may not be
available in original models at the time of replacement. No
guarantee is offered on instruments disposed of, instruments
resold without informing us, articles of consumption, failure of
parts whose guarantee periods are limited.
(2) Guarantee Period
One year from the date of delivery.
(3) Items out of Guarantee
Note that the following cases are excluded from the
guarantee though it is in guarantee period.
(a) Failure due to operation at a place not meeting the
installation requirements specified by the manufacturer.
(b) Failure due to power supply (voltage/frequency) other
than specified by the manufacturer or due to abnormality
in power supply.
(c) Corrosion or deterioration of the piping due to impurities
contained in gas, compressed air or cooling water
supplied by the user.
(d) Corrosion of the electric circuits or deterioration of the
optical elements due to highly corrosive atmospheric gas
such as chlorine gas or dusty environmental condition.
(e) Failure due to use of software, hardware or spare parts
no supplied by the manufacturer.

IMPORTANT - 5
(f) Failure due to use or use method not described in the
instruction manual, due to repair not controlled by us.
(g) Failure due to maintenance and repair performed by
Maintenance Service company not specified by us.
(h) Failure due to relocation or transport not approved by the
manufacturer after initial installation.
(i) Failure due to disassembly, modification or relocation not
approved by the manufacturer.
(j) Failure due to acts of God, including fire, earthquake,
storm, flood, lightning, social disturbance, riot, crime,
insurrection, terrorism, war (declared or undeclared),
radioactive pollution, contamination with harmful
substances, etc.
(k) Failure due to computer virus.
(4) Written Guarantee
Will not be re-issued. Keep it securely.

IMPORTANT - 6
INSTALLATION/RELOCATION
Customers should not performed installation at the delivered.
Engineers who have been trained by our service department or our
company, and approved by our company perform installation so
that the instrument will be used safety and precisely.
DISPOSAL
(a) Matters directly affect environment are not used. However,
laws or regulations may be changed in the future. When
disposing of the instrument, check laws and regulations
concerned carefully, then dispose of the instrument.
(b) When disposing of Waste solutions, see "Safety Summary"
(Safety-9) in the instruction manual.
OTHER CAUTIONS
Handling Chemicals and Samples
(a) When performing analysis by using this instrument,
customers are requested to handle, store, dispose of
chemicals and samples to be used by the customers following
the standards specified by laws or regulations on customers'
responsibility.
(b) About handling, storing way, disposal of reagent, standard
solution, and sample of precision control, follow instructions
given by the responsible companies.

SAFETY - 1
SAFETY SUMMARY
Before using the Model L-8900 High Speed Amino Acid Analyzer,
be sure to read the following safety instruction carefully, and
understand the contents completely.
General Safety Guidelines
• When operating, follow instructions in the instruction manual
for each instrument.
• Be sure to follow cautions described on the instrument and in
the instruction manual. If not, personal injuries or damages to
instrument may be caused.
• Installation at the delivery should be performed only by
personnel who are trained and approved by our company.
The hazard warnings which appear on the warning labels on the
product or in the manual have one of the following alert headings
consisting of an alert symbol and signal word DANGER,
WARNING or CAUTION.
: This is a safety alert symbol. It is used
for calling attention to danger that will
potentially harm a person.
To avoid possible injury or death, all the
safety messages after this symbol must
be followed.
DANGER : Indicates an imminently hazardous
situation which, if not avoided, will result
in death or serious injury.
WARNING : Indicates a potentially hazardous
situation which, if not avoided can result
in death or serious injury.
CAUTION : Indicates a potentially hazardous
situation which, if not avoided, can result
in minor or moderate injury.
NOTICE : Indicates a potentially hazardous
situation which, if not avoided, can result
in damage to property.

SAFETY - 2
SAFETY SUMMARY
In addition, the following signal word is used for ensuring proper
use of the product.
NOTE : Used to indicates in instruction for ensuring correct
trouble-free use of the instrument and accurate
measurement therewith.
General Safet
y
Guidelines
(
Continued
)