For Safe and Worry-Free Use
The safety and durability of chemical solution heaters depend on:
Selecting the Proper Model for the Application,
Proper Installation and Use,
and
Maintaining a Safe Electrical Environment
through
Regular Inspection and Maintenance.
Foundation of Safety:
Safety Policy
If safety were likened to a building,
the Essence of Safety and Reliability in design is built from the foundation (lower floors) upward.
If the foundation (lower floors) is weak,
a safe and secure building (as Safety) cannot be achieved.
| Operation and Maintenance |
Safety management during on-site operations,
handling, maintenance inspections, and upkeep |
| Product Selection |
Selecting the Proper Model for the Application |
| Equipment and Facilities |
Ensuring safety through safety design, planning, construction,
and other measures that meet operational safety requirements |
- If there is a problem with the equipment or facilities...
- Even if product selection and operation/maintenance are adequate,
design or installation issues can lead to serious accidents.
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About Proper Installation and Use
- If there are issues with product selection...
- Selecting products unsuitable for their intended use may cause malfunctions or accidents.
»
About Selecting the Proper Model for the Application
- If there are problems with operation and maintenance...
- Negligent operation can lead to accidents caused by handling errors or human error.
Furthermore, neglecting regular maintenance and inspections can also result in malfunctions or accidents.
- If there's a problem with the safety equipment...
- Even if equipped with overheat fuses or level gauges, they are completely useless if they fail to function.
There are numerous cases where safety equipment was broken and failed to operate properly,
leading to malfunctions and accidents.
Liquid heating electric heaters used for heating and maintaining the temperature of water or chemical solutions
may not only reduce product durability but also lead to accidents (such as a fire of any scale)
if used improperly or handled incorrectly.
Therefore,
Selecting the Proper Model for the Application is VERY ESSENTIAL.
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Usage Conditions: Our New Generation Standard Products
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- Taniguchi Heaters' liquid heating electric heaters are
used to heat and maintain the temperature of water
or chemical solutions in tanks employed in industrial surface treatment,
semiconductor manufacturing, plating, coating, and other processes.
- This product is intended for use in individual tanks
within a single unit or continuous line of
general-purpose tanks
for indoor use (open-top type that does not accumulate mist or gas).
It is not suitable for special-purpose tanks such as heat exchangers,
circulation tanks, or tanks with sealed tops equipped with exhaust or cooling devices,
nor for tanks subjected to vibration from ultrasonic oscillators or similar devices.
- The specific gravity of the chemical solution used
must be 1.1 or less,
and the maximum operating temperature for each model must not be exceeded.
- Flammable solutions are prohibited
for use as they may cause serious accidents such as fires or explosions.
- Direct or indirect heating of the human body or living organisms (e.g., during bathing)
is prohibited due to the risk of electric shock.
- Please read the documents issued by our company,
Knowledge for Safety and Security
and
Common Precautions for TG. Liquid Heating Heaters,
and strictly adhere to the precautions outlined therein.
- Our products are prohibited from use in equipment related to nuclear fuel,
as well as in aircraft and train components.
- Notes:
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For applications outside the usage conditions listed in 1., 2., and 3. above,
we will accommodate them with specially designed products.
Key Considerations for Model Selection
| Model Type |
When selecting equipment and devices, thorough prior consideration and appropriate model selection are essential,
taking into account tank size and material, as well as their arrangement relative to other equipment.
Particularly when introducing our heaters as replacements for other domestic or international brands,
please consult us regarding the intended application, specifications, and operating conditions.
We offer various types suitable for diverse uses, including waterproof immersion, submersible,
and tank-side insertion models.
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Types of
Heater Outer Tubes |
The type of heater outer tube should be selected based on
the acidity or alkalinity (pH value) of the chemical solution being used,
as well as the solution's properties (such as specific gravity).
- Please refer:
- Approximate Chemical Resistance Guide for Our Heater
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Voltage
Specifications |
Specifications vary by destination country or region, so please verify.
- Please refer:
- Regarding the Voltage of Heaters for Japan Domestic and Overseas Use
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Liquid
Temperature |
Use within the liquid temperature range specified in the instruction manual and catalog for each model.
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| Electrical Capacity |
Please select the appropriate electrical capacity (rated power).
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Heater Name
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Reference Information on Chemical Resistance
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Suitable for
strong acids, strong alkalis, and pure water.
Ideal for semiconductor production and surface treatment lines involving gold plating baths, silver plating baths,
solder baths, chrome baths, chemical research baths, fluoride baths, phosphate baths, electroless plating, nitric acid,
hydrochloric acid, sulfuric acid, pure water, and ultrapure water.
Due to its low gas permeability, it is frequently adopted for use with hydrofluoric acid and aqua regia. |
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Suitable for strong acids, alkalis, and pure water.
Widely adopted in semiconductor production and surface treatment lines for gold plating baths, silver plating baths,
solder baths, chrome baths, electroless nickel baths, pyrophosphate copper baths, chemical research baths, fluoride baths,
phosphate baths, etching baths, rhodium baths, electroless plating, nitric acid, hydrochloric acid, sulfuric acid,
pure water, and ultrapure water.
- Notes:
- For use with highly acidic substances such as hydrofluoric acid or aqua regia that allow gas permeation,
high-specific-gravity solutions, or liquid temperatures above 90°C, please consult us.
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Fluoropolymer (FEP) coating,
300μm thick
TaniFlon
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Suitable for
some kinds of acid, weak acids, and water.
- Notes:
- Please consult us regarding the acids that can be used.
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Fluoropolymer (PTFE) tubing,
0.5mm thick
TefTube
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Suitable for
weak acids and water.
- Notes:
- Strong acids, strong alkalis, and alkaline solutions cannot be used.
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Suitable for
weak acids.
Semi-gloss nickel bath, gloss nickel bath, copper sulfate bath, etc.
- Notes:
- Chrome plating is not applicable.
- Strong acids (hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, etc.),
hydrofluoric acid, and fluoride-containing solutions (e.g., chromium solutions with additives) are not applicable.
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Suitable for
slightly alkaline to neutral water.
Suitable for alkaline degreasing baths, copper plating baths, and copper strike baths.
For caustic soda, it is suitable for solutions up to 10% dilution.
(For caustic soda with high specific gravity, special design or UU-Flon is required.)
- Notes:
- Not for use in Chemical Polishing Solution.
- Weak acids, strong acids, hydrofluoric acid, and fluoride-containing solutions
(e.g., chromium solutions with additives) are also excluded from application.
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Suitable for
some weakly acids and seawater.
- Notes:
- It may be used in semi-gloss nickel baths and ferric chloride baths,
but please consult a specialist regarding corrosion resistance.
- This product is not suitable for general weak acids, strong acids, hydrofluoric acid,
or fluoride-containing solutions
(e.g., chromium solutions with additives).
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Suitable for
weak acids to pure water.
Ultra-Compact and High-Capacity.
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Chemical resistance varies depending on the pH, specific gravity, concentration, and viscosity of the chemical solution,
as well as the type and amount of additives, liquid temperature, etc. (listed in each model's catalog).
Therefore, chemical resistance cannot be guaranteed.
The above is a guideline based on our chemical resistance standard (specific gravity 1.1 MAX).
Please use it as a reference for heater selection. If you have any questions, please consult us.
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Matters for Strict Adherence
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Always follow the basic conditions of use specified for each product. |
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Use in a safe electrical environment. |
|
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Selecting the Proper Model for the Application. |
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Be sure to ground the earth connection. |
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Install the product correctly and treat it with care. |
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Perform regular maintenance inspections and upkeep. |
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Heaters for Chemical solution are used immersed in liquid,
so the material of the heater outer tube that can be used varies depending
on the liquid's properties (pH = degree of acidity or alkalinity).
If the heater outer tube material is improperly selected for the chemical solution,
damage such as corrosion, melting, hardening, or cracking may occur in the heater tube or tubing,
leading to accidents such as heater insulation failure or electrical leakage.
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The heat output of the heater varies significantly depending on the operating voltage.
Strictly adhere to the rated voltage (110V, 220V, etc.) indicated on our heater.
Using a voltage different from the rated voltage is extremely dangerous and may cause a fire.
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The liquid temperature that a heater can tolerate varies by heater model.
You must strictly adhere to the liquid temperature conditions
specified in the catalog and instruction manual.
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When used under conditions where convection in the liquid is difficult
due to factors such as the liquid's specific gravity, specific heat, or the type of additives,
the heater's heat dissipation can be significantly impeded, leading to overheating.
This may cause electrical leakage or fire.
Furthermore, forcing the liquid to circulate during heating
or subjecting the heater to ultrasonic vibrations may cause malfunctions
or pose an electric shock hazard.
If you have any questions regarding heater selection,
such as for use under special conditions, please consult us.
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Prohibited Actions
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Never boil dry. |
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Never use under conditions of poor heat dissipation or overheating. |
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Strictly prohibited for use on living organisms or the human body. |
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Do not touch the heater with your bare hands. |
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Do not use in a damaged or deteriorated state. |
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Use in flammable solution or gas environments is strictly prohibited. |
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Do not use the heaters while they are in contact with each other.
Arrangements that impede liquid convection are strictly prohibited.
Arrangements that may cause thermal interference are strictly prohibited.
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Ensure the heater's heating element never comes into contact with any object other than liquid.
Ensure a minimum clearance of 30 mm (or 15 mm even under conditions of good liquid convection)
between the heater and the tank walls and bottom.
Wrapping non-genuine resin-coated metal wires around the heating element
may cause localized overheating and is dangerous.
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Do not use in high humidity or dusty environments.
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Prohibited for use in pressure vessels.
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Unauthorized modification, disassembly, alteration, or repair is prohibited.
Unauthorized modifications or repairs may compromise the product's performance, quality,
and safety, and are dangerous.
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Do not remove the heater from the tank while it is energized, nor leave it outside the tank.
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Even when power is disconnected, residual heat remains in the heater for some time after turning off the power.
Therefore, do not remove the heater from the tank immediately after power is disconnected.
After turning off the power, leave the heater submerged in the liquid for at least 20 minutes.
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Do not install the straight immersion heater at an angle or sideways,
or install the L-shaped heater in a vertical L-shape orientation.
Do not install the product in any manner that differs from its specifications.
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When installing the heater in the tank,
ensure that no liquid leaks from the tank and that the portion of the heater below the level line
(lower limit of the liquid surface) remains submerged in the liquid.
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Always follow the usage conditions specified for each product.
Never use the product in a manner that deviates from these conditions.
Doing so will void the warranty.
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If dust, liquid, mist, gas, etc., are left adhering to the outer tube of the chemical solution heating heater,
or if scale or sludge becomes firmly attached, it will obstruct the heater's heat dissipation and cause malfunction.
Therefore, please regularly check the condition of the heater and clean it.
Also, please perform regular inspections not only on the tank and heater,
but also on the electrical environment.
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For details,
please refer to the Instruction Manual
and Precautions for Use and Safety for each model.
A Safe Electrical Environment is the foundation of Safety Measures.
- Install one set of overcurrent protection (fuse) per heater. Additionally,
install one appropriate ground fault circuit interrupter (GFCI)
per heater (or at least one GFCI for every two heaters).
- It is important not only to select overcurrent protection devices (fuses)
and ground fault circuit interrupters (GFCIs) appropriate for the heater,
but also to ensure their safe and proper placement.
Furthermore, a safe environment must be maintained to prevent flammable substances,
high humidity, condensation, dust, or particulate matter from affecting the heater or electrical systems.
- To prevent accidents, it is important for safety management to ground not only the heater
but also the tank and equipment. We also recommend grounding any equipment installed alongside electrical devices.
- The automatic liquid temperature regulator for heaters also serves as safety management equipment.
It is important that it not only controls temperature but also considers electrical safety.
- The power supply wiring for the heater must be wired using cables that meet the appropriate specifications
for the installation environment, such as voltage resistance and heat resistance.
- If the relay panel is not wired correctly,
it may cause malfunctions or accidents due to open circuits or short circuits.
- When combining low-voltage components with high-voltage heaters,
it is essential to incorporate a safety protection circuit.
- Please use genuine parts for safety equipment as well.
Instances have been confirmed where improper installation of non-genuine parts not specified in the design
caused localized overheating, placing stress on the heat-generating components and resulting in damage.
- Temperature control using SSRs (Solid State Relays) offers advantages such as silent operation
due to the absence of mechanical contacts, long service life,
and the ability to perform on/off control via high-speed pulses (PWM control).
However, there are also disadvantages. When using SSRs for heater control,
the SSRs themselves generate significant heat.
Because SSRs are constructed from semiconductors, they are vulnerable to heat.
Insufficient heat dissipation can cause them to fail due to their own heat generation.
Furthermore, most failures are short-circuit faults, causing the heater to remain energized in the ON state,
which can lead to fire hazards.
Therefore, it is strongly advised to always incorporate a circuit that automatically cuts off
the power supply upon detecting an SSR malfunction.
- Our automatic liquid temperature controllers utilize electromagnetic switches from a fail-safe perspective.
An electromagnetic switch is a device combining an electromagnetic contactor with a thermal relay
that forcibly interrupts the circuit when overcurrent flows through the contactor.
Even in control panel designs where we adopt SSRs, we incorporate electromagnetic switches.
Safety management for temperature control and regulation
requires the prior consideration and design of safety measures.
As a basic safety measure, use exceeding the rated power is prohibited.
◆About Heaters for the Japanese Domestic Market
Japan's power supply allows fluctuations up to +10% of the nominal voltage based on industrial standards.
Therefore, Taniguchi Heaters designs the power rating of its heaters as follows:
- For heaters with a nominal voltage of 200V, the rated voltage is 3-phase 220V.
- For heaters with a nominal voltage of 100V, the rated voltage is single-phase 110V.
◆Power Supply Conditions Outside Japan and Using Heaters Overseas
The transfer and use of our heaters (rated voltage 220V) intended for use within Japan
to countries utilizing high voltages of 3-phase 380V or higher is fundamentally prohibited.
This falls outside the scope of our quality guarantee.
This is because while Japan has a stable power supply environment,
some overseas regions have unstable power supplies with significant voltage fluctuations.
Even if the local high voltage is stepped down to Japan's nominal voltage using a transformer,
excessive heat generation exceeding the heater's rated power may occur,
potentially causing heater failure or posing a hazard. When using our heaters overseas,
always use either a transformer-equipped heater designed for overseas use
or an overseas-use heater that operates directly on the local voltage.
◆Regarding Overseas Heaters (Direct Use of Local Voltage)
Global power supplies include single-phase 230V/240V,
and high-voltage three-phase systems such as 380V, 400V, 415V, 420V, 440V, and 480V.
Considering the overseas power supply conditions mentioned earlier,
Taniguchi Heaters standardizes heaters destined for regions with a nominal voltage of 380V
to a nominal voltage specification of 400V.
For other high-voltage regions, we manufacture products tailored to each specific requirement.
When ordering heaters for overseas use,
please always confirm the local power supply conditions and provide us with your instructions accordingly.
◆About
Regarding Destination Classification
Safety and durability are prioritized, with specifications such as voltage tailored to the destination country.
Please select products designed to comply with the destination country's requirements.
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- For Domestic Japanese Market
- For use within Japan only.
The design is based on a voltage of
110V, 220V max.
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- Voltage Conversion Type for Overseas Use
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When used overseas,
it is designed to operate by transforming the voltage to match the power supply environment equivalent
to that in Japan.
For three-phase models,
it features Taniguchi Heaters' proprietary safety and durability design
with a 230V voltage specification
(240V specification for certain regions).
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- Dual-Use Type for both the Domestic Japanese Market and Overseas Voltage Conversion
- This product incorporates a Multi-Environment Safety Design
that ensures safe operation in Japan and abroad (a voltage converter is required for overseas use).
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- For Overseas
- This heater can be used directly with overseas power, with no voltage conversion required.
The warranty period is 12 months, including the month of shipment.
Should a malfunction occur despite proper use in accordance with the specified conditions,
we will replace or repair the product.
Items falling under the following sections are not covered by the warranty.
- When the product is used under conditions
that deviate from the specified usage conditions
(such as liquid temperature, heat resistance, specific gravity, etc.).
- Malfunctions resulting from corrosion of the heater outer tube material
due to an incorrect choice of heater for the liquid.
- Damage, breakage,
or destruction caused by mishandling during installation or use (such as dropping), or by dry heating.
- Failures or accidents caused by malfunctions in the control system
when our heaters are used in combination with control systems other than our compatible products.
- When proper maintenance,
inspections, and other usage management are not performed regularly.
- If disassembly or modification is performed
without consulting or obtaining approval from our company.
- Failure or accident due to natural disasters, theft, or loss.
- If you purchased an item that was listed on an auction site or similar platform.
- Warranty excluding the product itself. (Indirect damages, lost opportunities, etc.)
- If the matter falls
under the items for which we have issued a cautionary notice in our materials.
- If damage or breakage during product shipment is discovered
more than one week after delivery.
The warranty period for damage during shipping is one week from the delivery date.
Please inspect the contents promptly upon arrival.
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