Product manual

Maintenance and Repair
6-5
Part 1105120-01
E 2013 Nordson Corporation
Internal Blower Lamphead Filter Replacement
WARNING: Turn off the lamp and allow the system to proceed through the
cool down cycle and shut down the blower before replacing the filter.
The lamphead filters are held in place by a lip around the air inlet opening
and supports across the opening. Pull the used filter out from under the lip
and discard it.
Lamphead filters have a white, coarse side and a colored, fine side.
Replace the filter with the colored side down, white side showing, making
sure that the filter is tucked under the lip all around the opening.
WARNING: Filters cannot be cleaned. They contain a tacky material that
traps dirt. Do not attempt to clean or reuse dirty filters. Do not flip dirty filters
over and re-install them, as this will allow dirt and other contaminants to
enter the lamphead and damage the bulb and reflector, and possibly
contaminate the product being cured.
Lamphead Repair Procedures
Preparation
1. Turn off the UV system from the process equipment controller or at the
system controller control panel.
2. Allow the lamphead fan to complete its cooling cycle. If this has been
prevented by shutting off power to the system controller or to the
external blowers prematurely, always allow sufficient time for the bulb to
cool before proceeding.
3. Turn off the main electrical disconnect. Follow all relevant OSHA lockout
procedures or local codes.
4. Disconnect the unicable from the lamphead.
5. If necessary, loosen the lamphead mounting fasteners and remove the
lamphead from its mounting.
Bulb Replacement
CAUTION: Use only the Nordson bulbs listed in this manual. Equipment
damage may occur if bulbs from any other source are used.
1. Perform the Preparation procedure in this section.
2. See Figure 6-3. Turn or place the lamphead assembly so that the entire
bulb area is exposed and accessible.
3. Remove the eight screws from the screen flanges to remove the RF
screen.