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Tank Disassembly
MODELS EHU-803 AND 804, SINGLE AND THREE PHASE:
1. Using a 7/16” wrench, disconnect the wires from the steam generator.
2. Remove 24 metal clips by pushing gently on top of each clip with a screwdriver while cupping the clip with the other
hand.
3. Lift the top half of the tank free of the bottom half and rest it on the electrodes. Use a ¾” wrench to loosen and remove
the nuts from the six electrode studs.
4. Lift the top tank half from the electrodes. Remove the o-ring from the lower tank half o-ring channel and put it aside for
re-use. On high voltage units, lift the barrier assembly out of the bottom tank half.
5. Clean the tank halves and the barrier assembly, if applicable, using a scraper, stiff bristle brush, and/or water sprays.
Rinse the unit with clear water. If necessary, the drain screen may be removed for cleaning by removing three screws
and pushing up through the bottom tank connection with a screwdriver handle or other blunt object. The drain screen
snaps back into place and is SECURED BY THE 3 SCREWS after cleaning. BOTH THE BARRIER ASSEMBLY AND THE
DRAIN SCREEN SHOULD BE REPLACED WITH NEW PARTS IF THEY ARE UNSERVICEABLE.
6. Install one electrode in the top tank half. Make sure the small o-ring is located at the bottom of the electrode stud. Push
the electrode through one of the holes in the upper tank half. Slowly turn the electrode until it locks in place. Thread a
nut, finger tight, onto the electrode stud. Repeat this process with the other five electrodes.
7. Turn the tank top half upright and rest it on the electrodes. Tighten the nuts on all the electrode studs with a ¾” wrench,
so they are just snug.
8. Install the o-ring in the bottom tank half o-ring channel. A third hand or weight may be needed to hold one end of the
o-ring in place while the other end is being installed.
9. Install the barrier assembly in the bottom tank half.
10. Lower the top tank half onto the bottom tank half. Line up the marks on the rim of the top and bottom tank halves to
properly center the electrodes.
11. Look through the top connection to make sure the o-ring is still in place.
12. Snap a metal clip over the flanges of the tank halves, midway between two alignment marks. Position another clip on the
opposite side of the tank. Install all 24 clips in this manner.
MODEL EHU-801, SINGLE AND THREE PHASES:
1. Remove 24 metal clips by pushing gently on top of each clip with a screwdriver while cupping the clip with the other
hand.
2. Clean the inside of the steam generator thoroughly using a scraper, stiff bristle brush and/or water spray and rinse with
clear water.
3. High voltage units are supplied with a barrier/drain screen assembly in the lower tank half to increase tank life. Inspect
the barrier/drain screen assembly and replace if necessary.
4. Place a flat washer and O-ring on each ¼” electrode stud and push the studs through the holes in the upper tank half.
5. The mounting hole on each electrode is attached to the tank top with a slotted self-tapping screw.
6. From the outside, install a flat washer and ¼” hex nut on each electrode stud. Tighten these with a 7/16” wrench so they
are just snug.
