Hoshizaki JWE-620UA-6B, Service Manual

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If an abnormal input signal is found by “III.A. Diagnostic Procedure” or the error code “o1”
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below.
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1) Remove the internal booster tank according to “IV.C. Removal and Replacement of Internal
Booster Tank.”
2) Remove the control box cover, and disconnect the CN8 connector from the control board
(see “II.D.2. Control Board Layout”).
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1) Remove the internal booster tank according to “IV.C. Removal and Replacement of Internal
Booster Tank.”
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with a mixture of 1 part of recommended cleaner Hoshizaki “Scale Away” or “LIME-A-WAY”
(Economics Laboratory, Inc.) and 25 parts of warm water.
3) Rinse the parts thoroughly with clean water.
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in the vertical directions (see “II.A.2. Internal Booster Tank”).
5) Replace the internal booster tank in the reverse order of the removal procedure (see “IV.
C. Removal and Replacement of Internal Booster Tank”).