Raypak P-926 - Manual (Page 23)

SERVICING PROCEDURES
TUBE CLEANING PROCEDURE (TYPICAL)
Establish a regular inspection schedule, the fre-
quency depending on the local water condition and
severity of service. Do not let the tubes clog up solidly.
Clean out deposits over 1/16" in thickness.
Although the illustration shows the mechanical clean-
ing procedure of a small boiler, it is typical of all sizes.
The boiler may be cleaned from the return header side
as shown, without breaking pipe connections. It is
preferable, however, to remove both headers for better
Fig. #6049
23
visibility through the tubes and to be sure the ground up
lime dust does not get into the system.
Note that you do not remove the top pan or the heat
exchanger, generally.
After reaming, mount the wire brush in lieu of the
auger and clean out the debris remaining in the tubes.
Another method is to remove the heat exchanger,
ream tubes and immerse heat exchanger in non-inhib-
ited de-scale solvent.
RAYPAK TUBE CLEANING KIT
Extension Pieces (5) Auger with Carbide Tip Wire Brush
Fig. #8154.0