Yokogawa Touch Screen GP20 - Manual (Page 361)

5-7
IM 04L51B01-01EN
Maintenance and T
roubleshooting
1
2
3
4
5
App
5.1.5 Recommended Replacement Periods for Worn Parts
To ensure that this instrument operates reliably and correctly for a long time, we recommend
that you carry out preventative maintenance by periodically replacing its parts. As you
continue to perform this preventative maintenance over time, the parts that need to
be replaced may change. Be sure to check with your nearest YOKOGAWA dealer for
information on part replacement.
The recommended replacement periods for parts that wear down (parts that have a service
life) are shown in the following table.
The replacement periods listed here have been calculated under the assumption that
the GX/GP is used under standard operating conditions. Use these values as a guideline
when you determine the replacement periods of the parts of your GX/GP based on its
actual usage conditions. Parts must be replaced by qualified YOKOGAWA technicians
or technicians specified by YOKOGAWA, so contact your YOKOGAWA dealer when part
replacement is necessary.
Item Replacement
Period
Model Name Part No. Quantity Note
LCD 5 years GX20 Bezel Assy B8740BA 1 Not /D5/UH
B8740BX 1 /D5 (not /UH)
B8740GA 1 /UH (not /D5)
B8740GX 1 /D5/UH
GP20 B8740KA 1 Not /D5/UH
B8740KX 1 /D5 (not /UH)
B8740LW 1 /UH (not /D5)
B8740LX 1 /D5/UH
GX10 B8741BA 1 Not /UH
B8741GA 1 /UH
GP10 B8741JA 1 /UH
B8741KA 1 Not /UH
Battery 10 years GX20/GP20
GX10/GP10
Battery
Assembly
B9900BR 1
Dust and
water
protection
packing
5 years GX20/GP20 MEDIA
PACKING
B8740BS 1
GX10/GP10 B8741BS 1
GX20 PACKING B8706FY 1 For bezel
GX10 B8705FY 1
Aluminum
electrolytic
capacitor
5 years 1 GX20/GP20 Standard power
supply
B8740DP
GX20 24 VDC/AC
power supply
B8740EP
GX10/GP10 Standard power
supply
B8741DP
GX10 24 VDC/AC
power supply
B8741EP
1 Replacement period when the GX/GP is used at the upper limit of the normal operating
temperature (50°C)
The replacement period for aluminum electrolytic capacitors varies depending on the operating
temperature and the GX/GP specifications. When the operating temperature is 30°C, the
replacement period may be 10 years or more.
Note
• The replacement period of the LCD indicates the point in time when the LCD brightness is
half of its initial value. The brighter that you set the LCD, the shorter its replacement period
becomes. The decrease in the LCD brightness varies depending on the usage conditions,
and the judgment of the LCD’s brightness is subjective. Keep these points in mind when you
determine the actual replacement period of the LCD.
• With the passage of time, the LCD may be tinged yellow. The brighter that you set the LCD, the
faster it will discolor.
5.1 Maintenance