V. service information 1. maintenance/inspection – Hoshizaki ROX-20TA-U User Manual

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U8AA5540012

V. SERVICE INFORMATION

1. MAINTENANCE/INSPECTION

Check the following items during maintenance or inspection in normal condition. If any of
them is found abnormal or defective, repair, replace or adjust it properly.

No.

Inspection

Item

Acid Water pH

Alkaline Water pH

Available Chlorine
Concentration (Acid)

Flow Rate (Acid/Alkaline)

Ambient Temp.

Water Supply Temp.

Water Supply Pressure

Cell Replace Lamp

Salt Water Tank

Filter

Water Circuit

Attachment Plug

Exterior

Float Switch

Water Softener

Cartridge Filter

Remote Controller

Labels

Check

Within specified range?

Flashing or lighting?

No dirt buildup?
No salt deposit at bottom?

Not clogged with dirt?

No water leak?

Securely plugged in?
Not hot?

Clean?

Free of scale?
Working properly?

Water softened?
Working properly?
Set to regenerate water while
unit is out of service?
Proper amount of salt inside?

Pressure difference within
specified range?

Water outlet not blocked?
Working properly?

Attached firmly in place?

Remedy

Check by pH tester.

Check by accessory chlorine test
paper or thiosulfuric acid titration.

Check by beaker.

Check by thermometer.

Check by water pressure gauge.

Visually check.

Visually check.
Visually check.

Visually check.

Visually check.
Check.

Visually check.

Visually check.
Check for proper operation.

Check water sample.
Check.
Check.

Check.

Visually check.

Visually check.
Check for proper operation.

Visually check.