6. Care and Maintenance
Notice:
It is recommended that the UV output from the lamp be monitored regularly using a
Loctite® Zeta® 7021 Radiometer, (Loctite® part number 98048). If a radiometer is
not used to monitor the lamp, it is recommended that the lamp be replaced when the
hour meter, located on the front panel, indicates 1,000 hours of operating time has
elapsed. It is normal for the lamp output to slowly decline over operating time,
however, the effective life of the lamp will decrease significantly faster if it is turned on
and off frequently.
Caution!
It is recommended that the end of the light guide be positioned no closer than ½ inch
from the Loctite® product being cured. The heat transmitted by the lamp can adversely
affect the properties of the cured product or possibly cause damaged to the part surface.
Notice:
Vapors from some products may gradually accumulate on the end of the light guide,
reducing the UV output. It should be inspected regularly and cleaned as necessary using
isopropyl alcohol and a soft, clean cloth.
Caution!
Avoid placing sharp bends in the light guide. This reduces the UV output and may
permanently damage the light guide. If the light guide is mounted on a fixture, secure it
by the metal exit fitting and not the flexible plastic section.
Notice:
The intake and exhaust fan filter elements should be replaced as needed to
insure proper cooling of the power supply and UV lamp assembly. They should be
inspected routinely.
6.1
Replacing the Lamp Module
Caution!
Do not touch the lamp module reflector or the lamp. Contaminants from hands will
create “hot spots” and cause the module to fail prematurely. If either are accidentally
touched, carefully wipe them with a clean, soft cloth and isopropyl alcohol.
1. Switch power off and unplug the unit.
2. Allow several minutes for the lamp to cool.
3. Remove the four screws from the sides of the housing and lift off the cover.
4. Disconnect the lamp leads.
5. Pull back on the spring loaded lamp retaining bar.
6. Remove the lamp/reflector assembly from the mounting block.
7.
Install the new lamp module.
8.
Release the lamp retaining bar. Be sure the lamp is flush in the mounting hole.
9.
Reconnect the lamp leads.
10.
Replace the lid.
11.
Press the lamp hour reset switch on the front panel to set the hour meter to zero.
Notice: Step 11 should only be done when a new lamp is installed.
