Hoshizaki ROX-20TA-U service manual V. SERVICE INFORMATION 1. MAINTENANCE/INSPECTION

Models: ROX-20TA-U

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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

Remedy

 

 

Item

Check

 

 

 

 

 

 

1

Acid Water pH

Within specified range?

Check by pH tester.

 

 

 

 

2

Alkaline Water pH

Within specified range?

Check by pH tester.

 

 

 

 

3

Available Chlorine

Within specified range?

Check by accessory chlorine test

 

Concentration (Acid)

 

paper or thiosulfuric acid titration.

 

 

 

 

4

Flow Rate (Acid/Alkaline)

Within specified range?

Check by beaker.

 

 

 

 

5

Ambient Temp.

Within specified range?

Check by thermometer.

 

 

 

 

6

Water Supply Temp.

Within specified range?

Check by thermometer.

 

 

 

 

7

Water Supply Pressure

Within specified range?

Check by water pressure gauge.

 

 

 

 

8

Cell Replace Lamp

Flashing or lighting?

Visually check.

 

 

 

 

9

Salt Water Tank

No dirt buildup?

Visually check.

 

 

No salt deposit at bottom?

Visually check.

 

 

 

 

10

Filter

Not clogged with dirt?

Visually check.

 

 

 

 

11

Water Circuit

No water leak?

Visually check.

 

 

 

 

12

Attachment Plug

Securely plugged in?

Visually check.

 

 

Not hot?

Check.

 

 

 

 

13

Exterior

Clean?

Visually check.

 

 

 

 

14

Float Switch

Free of scale?

Visually check.

 

 

Working properly?

Check for proper operation.

 

 

 

 

15

Water Softener

Water softened?

Check water sample.

 

 

Working properly?

Check.

 

 

Set to regenerate water while

Check.

 

 

unit is out of service?

Check.

 

 

Proper amount of salt inside?

 

 

 

 

16

Cartridge Filter

Pressure difference within

Visually check.

 

 

specified range?

 

 

 

 

 

17

Remote Controller

Water outlet not blocked?

Visually check.

 

 

Working properly?

Check for proper operation.

 

 

 

 

18

Labels

Attached firmly in place?

Visually check.

 

 

 

 

U8AA5540012

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Page 31
Image 31
Hoshizaki ROX-20TA-U service manual V. SERVICE INFORMATION 1. MAINTENANCE/INSPECTION