－
85
－
10. MAINTENANCE
10.3 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) Usage Conditions
The following reference of parts replacement intervals are for the
case where the instrument is used under the following standard
conditions with “Standard specification”. The intervals become
shorter if the environmental conditions are worse than the standard
conditions.
Item
Conditions
Temperature
21 to 25 °C
Humidity
45 to 65 % RH
Usage time
12 hours/day
Corrosive gas
Free of the gas
Item
Conditions
Others
1. A place free of dust, gas ,moisture, and oily
smoke
2. A place free of vibrations and shocks
3. A place where operations are not affected
unfavorably
(2) Reference of Parts Replacement Intervals
Parts name
Reference of
replacement
Remarks
Me
ch
ani
ca
l co
m
pone
nts
Belt
5 to 7 years
Chart drive mechanism
6 to 8 years
Dotting mechanism (dot-printing type)
4 to 6 years
Indication mechanism (dot-printing
type , servo system)
5 to 7 years
Motor for indication
6 to 8 years
Motor for dotting drive
4 to 6 years
Chart motor
8 to 10 years
Indication/pen mechanism (pen type
servo system)
4 to 6 years
Replacement intervals changes depending on the input
condition.
Motor for indication (pen type)
4 to 6 yeas
Ele
ctri
cal
co
mp
onen
ts
Power unit
10 years
6 years for the 3 pen specification.
Board unit (electrolytic capacitor)
8 years
Relay (for input selection)
5 years
3 years for narrow spans of resistance thermometer input
Relay (for alarm output)
100,000
times
Resistive load (Less than rated contact capacity)
50,000 times
Inductive load (Less than rated contact capacity)
Chart paper lighting lamp
6 years
Brightness down by half (For standard brightness setting (*1))
Power lamp/alarm lamp
7 years
Brightness down by half
Various indication lamp (white color)
5 years
EEP-ROM (Internal memory)
10 years
Rewrite count about 100,000 times or less
Switch
Tact switch
200,000
times
Setting/operation keys
Toggle switch
20,000 times
RECORD switch and AUTO CH switch
Power switch
10,000 times
Dip switch
1,000 times
KEY LOCK switch and CAL switch
(*1): For high brightness setting, it is shorter.
Avoid replacing any parts other than consumable parts of the chart papers and inkpad (multi-point type)/cartridge pen (pen type).
Otherwise, the instrument cannot be recovered correctly and dangerous accidents may occur. Contact your nearest CHINO’s agent
for replacing parts.
Replacement Parts
