Precision Control Systems Hi-Temp IR 5209 - Manual (Page 18)

14
Quartz Window Cleaning and Replacement
The optional quartz window can be replaced or removed from the Model 5209 for periodic
cleaning. Use the following procedure to remove/reinstall/clean the quartz window.
1. Remove the three end cover screws and the end cover from one end of the
heater.
2. Gently slide the quartz window out of the grooves within the heater reflector.
Take care so that the quartz window does not bind and subsequently chip or
crack as it is removed.
3. If cleaning the window, use a non-abrasive glass cleaner and a clean, dry, lint-
free cloth. After cleaning, do not touch the inside surface of the window unless
wearing gloves.
4. Reinsert the edges of the window into the grooves machined into both sides of
the reflector body.
5. Gently push the window into the reflector until it is completely seated against the
end cover mounted to the heater.
6. Reinstall the other end cover and secure with the three end cover screws.
Cleaning the Reflector
A clean reflector provides the greatest radiant efficiency. If the reflector surface becomes
contaminated, it reflects less energy. The energy that is not reflected is absorbed by the
reflector, and removed by the cooling water and air. This energy is lost energy.
The following procedure should be used to clean the Model 5209 reflector:
1. Remove the lamps as described in Section 5
2. Clean the reflector with a mixture of warm water and common household ammonia followed
by a thorough wipe-down using a clean-water-dampened flannel cloth.
3. Depending on the type of contamination present on the reflector, a suitable solvent may be
required to remove the contamination. The solvent must be selected based on this inability
to adversely affect the aluminum reflector.
4. Replace the lamps, quartz window (if so desired), and the heater end covers as outlined in
Section 5 – Lamp Removal/Replacement/Installation.