25
IV. MAINTENANCE
1.
Yearly
Maintenance
1.1 Chlorine Pressure Chamber Cleaning
It is important to inspect and clean the chlorine pressure chamber for signs of corrosion, buildup of
debris and clogging. It is recommended to be done on a yearly basis. Ignoring this maintenance
step can lead to serious malfunctions of the vaporizer. In some instances it may be cheaper, less
time consuming and more reliable to replace the chlorine pressure chamber rather than clean it. The
operator should determine this on a case by case basis.
Warning: When performing this step, ensure that all protective equipment for handling chlorine
gas/liquid is available.
a. Refer to Section III.4.2 and complete the long term shutdown, ensuring that all chlorine has been
purged from the system.
b. Disconnect all power and remove all electrical connections to the top fl ange and collar plate.
Disconnect the inlet and outlet unions.
c. Remove the fi berglass cabinet.
d. Using a fl ashlight, inspect the outer surface of the chlorine pressure chamber using the 3"
inspection hole in the collar plate. If signs of corrosion exist, proceed to Section IV.2.
e. Disconnect the collar plate from the water tank and use the overhead lift to move the inner chamber
assembly to a well-ventilated location.
f. Remove the top fl ange of the inner chamber assembly. Pour out any accumulated liquid
contaminants from the pressure chamber. Using a fl ashlight, inspect the lead gasket seal areas and
the interior of the inner chlorine pressure chamber for corrosion and residue. If signs of corrosion
exist, proceed to Section IV.2.
g. Using water or appropriate cleaner, purge the internal surfaces of the inner chlorine pressure
chamber until all residue has been removed. A 2,000 PSI water pressure washer can be used to
clean the inside and outside of the pressure chamber.
h. Once clean, inspect again for signs of corrosion. If signs of corrosion exist, proceed to Section
IV.2. Ensure that the inside of the pressure vessel is thoroughly dried before installing the top
fl ange.
i. Using a new lead gasket, install the fl ange onto the chlorine pressure chamber. Be sure to replace
any worn or damaged fl ange nuts or bolts. Torque pressure chamber bolts to 250 ft-lbs (340 N-m).
j. Clean water tank and remove any magnesium or other debris that may have deposited on the
bottom of the water tank.
k. Install the chlorine pressure chamber onto the water bath tank with a new rubber gasket and
connect the process piping. Be sure to replace any worn or damaged fl ange nuts or bolts.
l. Remove and inspect the heater elements for calcium or other build up that will result in ineffi cient
heat transfer. Clean the elements and heater assembly before re-assembly and replace the heater
gasket. If the heater elements are not removed for service, at least open the drain port at the
bottom of the heater housing to allow the water at the bottom to drain out. Afterward, replace the
cap and ensure a good seal.
Summary of Contents for VPH-10000-1 Series
Page 1: ...1 Series VPH 10000 1 Vaporizer Instruction and Operation Manual VPH 10000 1 Rev 9 11 19 ...
Page 13: ...13 FIGURE 4A Relay Connections Box ...
Page 14: ...14 FIGURE 4B Signal Connections Box ...
Page 34: ...34 FIGURE 9 Chlorine Vapor Pressure Curve Vapor Pressure ...
Page 35: ...35 FIGURE 10 Sulfur Dioxide Vapor Pressure Curve Vapor Pressure Min Superheat ...
Page 36: ...36 FIGURE 11 Ammonia Vapor Pressure Curve Vapor Pressure Min Superheat ...
