State SSED 5 thru SSED 120 - Manual (Page 31)

31
3. Characteristics of water supply.
Regardless of water treatment, the elements should be
examined regularly.
Lime scale accumulations may cause noises to occur during
operation.
It is recommended that a heating element be removed periodically
for examination. If it is scaled, all of the elements should be removed
and cleaned. If the tank bottom has an accumulation of sediment it
should be cleaned.
Lime scale should be removed by dissolving the accumulation in
UN-LIME
® delimer. Do not use muriatic or hydrochloric acid base
deliming solutions to remove lime scale from the elements.
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1. Turn off electrical disconnect switch.
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3. Open front panel.
4. Disconnect the element wiring. Try not to disturb the wiring
unnecessarily and reconnection will be easier.
5. Unscrew each element.
6. Remove the elements and gaskets from the openings.
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beyond the size of the tank openings.
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and allow scale to dissolve. Do not permit delimer or water
to contact heating element electrical terminals.
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by scraping or other mechanical means. Lime scale
dissolvents will not remove these types of scale which are
occasionally encountered.
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cleaning is completed.
Call the toll free phone number on the back cover of this Instruction
Manual to purchase UN-LIME and heating element gaskets.
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1. Remove sediment and scale from the tank bottom through
the access provided by the element openings or drain valve
opening.
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to aid the cleanout process.
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Don not reuse original element gaskets.
3. Put new gaskets on each element and install into tank openings.
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32 ft/lbs.
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removed.
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