19-7
19.5 Recommended Parts Replacement Intervals
It is recommended to replace parts periodically as preventive maintenance for using the instrument under
good conditions for a long time.
1. Working conditions
The reference parts exchange intervals are under the following standard conditions.
The intervals become shorter if the ambient conditions are worse than the standard conditions.
Items Conditions
Temperature 20 to 50 °C
Humidity
20 to 80 %RH
Working time 8 hours / day
Corrosive gas Shall be free of corrosive gases
Items Conditions
Others
○
1
A place free of dust, moisture, and
soot
○
2
A place free of vibrations and shocks
○
3
A place where operation is not
affected unfavorably
2. Reference parts exchange intervals
Part names
Exchange
reference
Remarks
Printer
4 to 6 years
Drive cord
4 to 6 years
Chart drive mechanism
6 to 8 years
Cassette ribbon drive
mechanism
6 to 8 years
Ribbon select mechanism
6 to 8 years
Mechanical component
s
Various motors
4 to 6 years
Power supply unit
5 years
Ambient temperature 25 °C
Display board
4 to 6 years
Sheet switch (key)
4 to 6 years
Relay (for input selection)
5 years
Narrow span of resistance thermometer
input: 2 years
70,000 times
Resistive load (Less than rated contact
capacity)
Relay
(Mechanical relay for
alarm output)
20,000 times
Inductive load (Less than rated contact
capacity)
EEPROM 7
years
Rewrite
count
About 100,000 times or less
Electrical co
mponent
s
Lithium battery
7 years
Don't replace any parts other than consumable chart and cassette ribbon, otherwise the instrument
cannot be recovered correctly and a dangerous accident may also occur. Ask our sales agent for replacing
parts.
Replacement of parts
Warning
Содержание AL3000 SERIES
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Страница 116: ...32 8 KUMANO CHO ITABASHI KU TOKYO 173 8632 Telephone 81 3 3956 2171 Facsimile 81 3 3956 0915 Printed in Japan ...