DFD6361-Maintenance - 第685页
F-115 The usage limit of the UV irradiation lamp Long-hours use of the UV irradia tion unit will make the UV irra diation lamp, in accordanc e with this , the irradiation pow er of the lamp will also decl ine. You can ca…
F-114
5-3. Replacing the UV Irradiation Lamp
[Optional Accessory]
Safety items for replacing the UV irradiation lamp
WARNING
- Since the UV irradiation unit has the N
2
purge specification. If the N
2
gas is filled and causes oxygen deficiency, it may lead to critical
condition or death.
To maintain proper oxygen concentration, sufficiently ventilate the
purge section before performing maintenance.
The oxygen concentration lowers while N
2
gasissuppliedor
immediately after stopping its supply. During such periods, do not
position your face near the N
2
gas discharge section.
- Since the UV lamps located inside the UV irradiation unit are
consumables, you have to replace them when they reach their
usage limit. Before replacing the lamps, make sure that the power
to the machine is turned OFF.
- Non-approved UV irradiation lamps could cause visual impairment
or skin disorders due to harmful ultraviolet rays or generation of
ozone.
Use the following DISCO-designated lamps for the UV irradiation
unit.
Lamp light wavelength Part No.
Wavelength range Peak wavelength
AQFL15BL-B
300 to 430 nm 352 nm
CAUTION
When you remove or install the glass plate, exercise care to avoid it
from contacting with the UV irradiation lamp.
IftheglassplatecontactswiththeUVirradiationlamp,thelampwill
break, which may lead to injury.
F-115
The usage limit of the UV irradiation lamp
Long-hours use of the UV irradiation unit will make the UV irradiation lamp,
in accordance with this, the irradiation power of the lamp will also decline.
You can calculate the usage limit of a UV irradiation lamp by the following
equation.
The usage limit of a UV irradiation lamp = 2000 hours ÷ (irradiation time
of one workpiece)
÷ (number of workpieces processed in a day)
When the UV irradiation lamp use period reaches the calculated value, replace
the UV irradiation lamp.
The number of the UV irradiation lamps mounted in the machine is ten. When
one of the lamps reaches its usage limit, replace all of them.
Operation flow
This section describes the procedure for replacing the UV irradiation lamp.
This procedure consists of the following steps:
5-3-1 Shutting off power
5-3-2 Preparation of replacing the UV irradiation lamp
5-3-3 Replacing the UV irradiation lamp
5-3-4 Completion of UV irradiation lamp replacement
F-116
5-3-1. Shutting off power
Procedures for shutting off power
Step No. Do This
1
Press the <System Initial> button to effect system initialization.
- Each axis moves to its origin position.
2
Turn OFF the main switch and then pull out the key.
3
Turn OFF the circuit breaker at the left of the machine. Lock out
the circuit breaker lever with a padlock or the like.
4
Shut off the facility power supply.
Continued in the next section.