Instruction/ maintenance manual of the product ROX-20TB2-U Hoshizaki
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Hoshizaki “A Superior Degree of Reliability” www .hoshizaki.com Model ROX-20TB2-U Water Electrolyzer Hoshizaki America, Inc. Number: X002-858 Issued: 3-9-2012 SE R VICE MAN U AL.
1 IMPOR T ANT Only qualified service technicians should install, service, and maintain the unit. No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual.
2 IMPOR T ANT This manual should be read carefully before the unit is serviced or maintenance operations are performed. Only qualified service technicians should install, service, and maintain the unit. Read the warnings contained in this booklet carefully as they give important information regarding safety .
3 Important Safety Information Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury , or damage to the unit. W ARNING Indicates a hazardous situation which could result in death or serious injury .
4 • Ensure adequate ventilation. Hydrogen gas or chlorine gas may cause health problems. • Do not mix electrolyzed water with other chemicals. Mixture with acidic or chlorine-based chemicals can cause chlorine gas, resulting in health problems. • Do not use a large volume of sanitizing water only .
5 I. GENERAL INFORMA TION 1. SAFETY INSTRUCTIONS The following instructions contain important safety precautions and should be strictly observed. W ARNING 1. When there is no need to energize the unit during disassembly or cleaning, be sure to unplug the unit or disconnect the main power supply before servicing the unit to prevent electric shocks.
6 NOTICE 1. After servicing, be sure to check for water leaks from the water supply and drain lines to prevent wetting the surrounding properties. 2. After servicing, always check for proper operation. CAUTION LABEL LOCA TIONS The following caution labels are attached where special care should be taken.
7 2. PRODUCT INFORMA TION [a] FEA TURES 1) Space saving The compact unit [W1 1" x D16" x H12" (W280 x D400 x H310 mm)] allows for installation under sink. 2) V arious optional parts available Float switch: Detects the tank water level to automatically start/stop operation.
8 [b] MODEL NAME ROX - 20 T B2 - U For USA Development order T able-top or under-sink installation Maximum fl ow rate (x 0.1 L/min) Hoshizaki water electrolyzer.
9 3. DIMENSIONS/SPECIFICA TIONS.
10 Available Ch lorine <ppm > 0 10 20 30 40 50 60 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Tim e < h> 4. PERFORMANCE DA T A The following graph shows the electrode performance curve. The electrode life cycle depends on the free chlorine concentration as well as the raw water quality .
11 II. TECHNICAL INFORMA TION 1. PRINCIPLE OF ELECTROL YSIS W ater (H 2 O) we use in our daily life has a mysterious power . Adding a small amount of salt (NaCl) to water (H 2 O) and electrolyzing it .
12 DC Power Supply Hypochlorous Acid ( HOCl ) Sodium Hydrox ide (NaOH) Cathode ( RED ) Anode (OX) Positive ions draw n to cathode Cl - Negative ions drawn to anode Salt W ater (NaCl) Diaphragm Electro.
13 Salt water contains four kinds of ions; sodium ions (Na + ), chlorine ions (Cl - ), hydrogen ions (H +) and hydroxide ions (OH - ). NaCl + H 2 O → Na + + Cl - + H + + OH - (Mix water and salt) Sa.
14 2. CONSTRUCTION [a] GENERAL (1) Operation Panel [Body] Displays the present state of the electrolyzer . (2) Door Provided behind are the power switch (ground fault interrupter) and the buttons to adjust the operating conditions and various set values.
15 (3) Coin Lock Locks the door . (4) Cleaning W ater Outlet Dispenses cleaning water (sanitizing water in flushing process). Should be connected with the cleaning water outlet [remote]. (5) Sanitizing W ater Outlet Dispenses sanitizing water (cleaning water in flushing process).
16 (21) Cable Electrically connects the remote controller and the electrolyzer body . Be sure to make the connection when using the remote controller . (22) Salt W ater T ank Makes 1.32 gal (5 L) of electrolyte (concentrated salt water) and adds it to water (diluted salt water).
17 (29) Microswitch [Location] Senses the location of the fl ow switching valve. (30) Microswitch [Direction] Senses the direction of the fl ow switching valve. (31) Flow Control V alve Located between the water supply inlet and the electrolytic cell.
18 (35) Relay (X1) Located on the supply line of the switching regulator [electrolytic cell]. T urns on/off the switching regulator by using a make contact. (36) CB Relay Changes the polarity of the voltage on the electrolytic cell. (37) Current Sensor Measures the current of the electrolytic cell.
19 3. WIRING DIAGRAM.
20 4. W A TER CIRCUIT Pressure Gauge Filter W ater Supply Pressure Reducing V alve (Accessory) W ater Electrolyzer (ROX-20TB2-U) Pressure Reducing V alve (35 psi) W ater Softener Control Box W ater V .
21 5. FUNCTIONS AND OPERA TION [a] NORMAL MODE The following menus are available in the normal mode. The display shows from 1 to 3 every time the display select button is pressed. No. Menu Description 1 Cell run time (h) T otal electrolytic cell run time at present.
22 No. Menu Factory default Adjustable range/increments A10 Cell replacement time (h) 3000 1500 to 9000/100 A1 1 Cell reversal time (h) 12 0.033 (check), 1 to 150/1 A12 Continuous dispensing protectio.
23 No. Menu C10 Elapsed time after regeneration output (h) C1 1 Last error number C12 Cell run time at last error C13 Cell reversal time at last error C14 Current at last error C15 V oltage at last er.
24 Unused Always OFF Unused Always OFF Unused Always OFF Unused Always OFF Unused Always OFF Unused Always OFF C1 Display Model inputs F l o w c o n t r o l v a l v e m e c h a n i s m 1: ON when ROX-.
25 C2 Display (ROX-20TB2-U) Remote panel Hand or pool Beam sensor detection ON when tank is used Beam sensor input: real-time display of sensor rea ction (with/without remote controller short circuit connecto r) Beam sensor lower sensitivity: display according to operation (0.
26 C3 Display Flow control valve outputs Brake Close Open Stop Flow control valve 1 b2 ON ON OFF OFF Flow control valve 2 C2 ON OFF ON OFF Brake: valve stopping, Close: decreasi ng flow rate, Open: in.
27 III. SER VICE INFORMA TION 1. ERROR CODES Lamp No. Error Problem Operation Control panel display Error E1 1 Low water Flow rate stayed below 0.13 gal/min (0.5 L/min) for 10 sec with water valve on Production stops after water valve turns off two times Error no.
28 Lamp Error code Problem Check Possible cause Remedy Add salt water — (Continued) Salt water pump Defective Repair or replace Improper stroke dial setting Set to "E" (far to left) Supply line open circuit Correct Signal line open circuit Correct Error E1 1 Flow control valve ( fl ow rate sensor) detected fl ow rate below 0.
29 3. FLOW RA TE ADJUSTMENT Pressing fl ow rate select button will not change fl ow rate and display Dispensing action is stopped Stop dispensing and press fl ow rate select button Normal (Nor .) mode is selected Select normal (Nor .) mode and press fl ow rate select button Flow control valve connector is disconnected No No Ye s Reconnect 1.
30 4. REMOV AL AND REPLACEMENT OF COMPONENTS [a] ELECTROL YTIC CELL WARNING T o prevent electric shock, be careful not to crush or drag the pipes or wires when removing the electrolytic cell. NOTICE T o prevent water leaks resulting in wetting the surrounding properties, be sure to drain water before removing the electrolytic cell.
An important point after buying a device Hoshizaki ROX-20TB2-U (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hoshizaki ROX-20TB2-U yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Hoshizaki ROX-20TB2-U - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki ROX-20TB2-U you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki ROX-20TB2-U will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki ROX-20TB2-U, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hoshizaki ROX-20TB2-U.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki ROX-20TB2-U. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki ROX-20TB2-U along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
