Hydro Instruments VPH-10000-1 Series, Инструкция по эксплуатации

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d. Close the isolation valves.
Warning: Ensure that the chlorine containers can handle the amount of chemical going back
into the container. Overfi lled containers will result in a chlorine leak.
4.2 Long Term Shut Down
A long term shut down is defi ned as any situation where the chemical feed is going to be stopped
and the heater and all control functions will also be shut down. Hydro Instruments recommends the
following procedure:
a. If applicable, temporarily stop chemical feed at the vacuum regulator and allow liquid to fi ll back
into the container.
b. Once equilibrium has been reached (when temperature and pressure readings are constant over a
set period of time), shut the liquid & gas chlorine container valves. Keep all manifold valves open.
c. Run the ejector to remove all the chlorine from the pipeline until the chlorine pressure gauges read
zero. Wait for 30 minutes to ensure pressure readings hold at 0 psi (0 bar) and then repeat this step
as necessary.
d. Purge the system with dry air or nitrogen according to the instructions in the Hydro Instruments
Nitrogen Purging document. Then operate the ejector again to remove all gas from the system
until the pressure gauges read zero.
e. Close the isolation valves.
f. Once established that all the chlorine is evacuated (pressure readings hold at zero), disconnect all
power to the vaporizer. Switch to the stand-by unit if necessary.
g. Open the drain valve to allow the water in the water tank to drain.
Warning: The water and vaporizer components/equipment will be very hot, 180˚F (82˚C),
so be careful when handling and/or give the water time to cool before draining.
Warning: Ensure that the chlorine containers can handle the amount of chemical going back
into the container. Overfi lled containers will result in a chlorine leak.
5. Navigating the Controller
The vaporizer is provided with a Nema 4x, 2 line alphanumeric display controller that will display and
output all important features and conditions. Navigating the controller is done by the use of four push
button keys. The push button functions are described below.
key: Cycles to the previous screen.
key: Cycles to the next screen.
key: Increases/changes value. Also used to enter screens
key: Decreases/changes value.
Note: When adjusting parameter values, the number displayed is automatically saved upon leaving
the screen. Thus no “enter” button is needed.
Password: All editable features for the VPH-10000-1 are password protected to prevent unwanted
tampering with the values. To access these screens the correct password must be entered to proceed.
The password for the VPH-10000-1 is “100”.