26
m. Check and tighten all 3 phase power wire terminals in the heater control box and top of the heater.
Check continuity throughout the three phase power section. Re-install all electrical connections/
instruments, connect the power, and reconnect the chlorine manifold piping with new lead gaskets.
n. Proceed to Sections III.1 and III.2 for leak testing and initial start up to resume chemical feed.
1.2. Alarms and Switches Testing
Alarms and switches should be tested at least once a year. Before proceeding to perform any testing or
maintenance ensure that all chlorine has been completely purged from the system and that the chlorine
container valves and inlet manifold piping valves are closed. Please refer to Section III.4.2 for long
term system shut down before performing any of the below procedures. After performing any of these
procedures, then refer to Sections III.1 and III.2 for leak testing and initial start up to resume chemical
feed.
Pressure Switch Testing for Relief Valve Assemblies and Expansion Chamber Assemblies
a. Remove the pressure switches from the pressure relief and expansion chamber assemblies.
b. Apply air pressure at approximately 50 – 100 psi (3 – 7 bar) to each pressure switch to verify
operation.
c. Replace any pressure switches that fail this testing.
d. Install tested pressure switches back into each assembly using an appropriate thread sealant.
Chlorine Gas High Pressure Alarm Testing
a. Remove the pressure transmitter assembly with diaphragm protector from the inner chlorine
chamber top fl ange.
b. Carefully apply nitrogen pressure, slowly increasing to about 300 psi (21 bar), to verify that the
high chlorine gas pressure alarm will activate at 250 psi (17 bar) on the vaporizer controller.
c. Replace the pressure transmitter assembly if it fails this testing (if the corresponding relay on the
controller fails then take corrective action).
d. Install tested pressure transmitter assembly with diaphragm protector back onto the top fl ange of
the inner chlorine chamber assembly using an appropriate thread sealant.
Pressure
Relief
Valve
a. Remove the Pressure Relief Valve.
b. Carefully apply nitrogen pressure, slowly increasing to about 600 psi (41 bar), to verify that the
Pressure Relief Valve will open at 560 psi (39 bar).
c. Replace the Pressure Relief Valve if it fails this testing.
d. Install tested Pressure Relief Valve back onto the assembly.
Содержание VPH-10000-1 Series
Страница 1: ...1 Series VPH 10000 1 Vaporizer Instruction and Operation Manual VPH 10000 1 Rev 9 11 19 ...
Страница 13: ...13 FIGURE 4A Relay Connections Box ...
Страница 14: ...14 FIGURE 4B Signal Connections Box ...
Страница 34: ...34 FIGURE 9 Chlorine Vapor Pressure Curve Vapor Pressure ...
Страница 35: ...35 FIGURE 10 Sulfur Dioxide Vapor Pressure Curve Vapor Pressure Min Superheat ...
Страница 36: ...36 FIGURE 11 Ammonia Vapor Pressure Curve Vapor Pressure Min Superheat ...
