7–15
T-372
9. Flush.
10. Put the unit back in service under normal load and check head (discharge) pressure.
7.13.3
Cleaning Procedure Detailed
1. Drain and flush the water circuit of the condenser coil. If scale on the tube inner surfaces is accompanied by
slime, a thorough cleaning is necessary before de-scaling process can be accomplished.
2. To remove slime or mud, use Aluminum Cleaner® 164. Mix 170 grams (6 ounces) per 3.785 liters (1 U.S.
gallon) of water. Mix cleaner in one half the volume of water, while stirring, and then add remaining water.
Warm this solution and circulate through the tubes until all slime and mud has been removed.
3. After cleaning, flush the tubes thoroughly with fresh clean water.
4. Prepare a 15% by volume solution for de-scaling, by diluting Oakite Compound No. 32 with water. This is
accomplished by slowly adding 0.47 liter (1 U.S. pint) of the acid (Oakite No. 32) to 2.8 liters (3 U.S. quarts)
of water.
WARNING
!
Oakite No. 32 is an acid. Be sure that the acid is slowly added to the water. DO NOT PUT
WATER INTO THE ACID - this will cause spattering and excessive heat.
WARNING
!
Wear rubber gloves and wash the solution from the skin immediately if accidental contact
occurs. Do not allow the solution to splash onto concrete.
5. Fill the tubes with this solution by filling from the bottom. See
Figure 7.8 Water-Cooled Condenser Cleaning - Forced Circulation
1) Pump
2) Suction
3) Tank
4) Pump support
5) Priming Connection (Centrifugal pump
50 gpm at 35’ head)
6) Globe valves
7) Vent
8) Close vent pipe valve when pump is
running
9) Condenser
10) Remove water regulating valve
11) Return
12) Fine mesh screen
- - - - -
NOTE
It is important to provide a vent at the top for escaping gas.
4
3
2
1
5
6
7
8
9
10
11
12
