Service; Tube Cleaning Procedure - Raypak RAYTHERM 0133-4001 Installation And Operating Instructions Manual

PUMPS
FAILURE TO PUMP
1. Pump not properly primed.
2. Wrong direction of rotation.
3. Speed too low.
4. Total head too high.
REDUCED CAPACITY AND/OR HEAD
1. Air pockets or leaks in suction line.
2. Clogged impeller.
3. Foot valve strainer too small or clogged.
4. Excessive suction lift (over 15 ft.).
5. Insufficient positive suction head (for hot water).
6. Total head more than that for which pump is
intended.
7. Excessively worn impeller and wearing rings.
RAPID WEAR OF COUPLING
1. Misalignment or a bent shaft.
2. Sagging motor mounts (over-oiling).

SERVICE

Extension Pieces (5)
P/N 052871F - 5/8 DIA.
REPAIR SECTION

TUBE CLEANING PROCEDURE

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.
The boiler may be cleaned from the side opposite
the water connections as shown, without breaking pipe
connections. It is preferable, however, to remove both
PUMP LOSES PRIME
1. Air leaks in suction line.
2. Excessive amount of air in water.
3. Water seal in stuffing box not functioning.
4. Excessive suction lift and pump operating too
OVERLOADED DRIVING UNIT
1. Head much lower than that for which pump is
2. Speed too high or higher than that contem-
MECHANICAL TROUBLES AND NOISE
1. Misalignment.
2. Excessive suction lift or vapor binding (hot
3. Bent shaft and/or damaged bearings.
4. Suction and discharge piping not properly
RAYPAK TUBE CLEANING KIT
Auger with Carbide Tip
headers for better visibility through the tubes and to be
sure the residue does not get into the system.
exchanger generally.
and clean out the debris remaining in the tubes.
ream tubes and immerse heat exchanger in non-
inhibited de-scale solvent.
36
near shut-off point.
designed.
plated.
water).
supported and anchored.
Fig# 9310
P/N 052870F - 7/8 DIA.
Note that you do not remove the top pan or the heat
After reaming with the auger, mount the wire brush
Another method is to remove the heat exchanger,
Wire Brush
Fig. # 8154