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Yoshitake STC-1 Product Manual

Steam trap checker
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Thank you very much for choosing the Yoshitake's product. To ensure the correct and safe use of the
product, please read this manual before use. This manual shall be kept with care for future references.
The symbols used in this manual have the following meanings. Please note that Chinese language version
and Thai language version can be downloaded from the following website.
Website: http://www.yoshitake.jp/index.html
ถ้ า ต้ อ งการ ดาวน์ โ หลดคู ่ ม ื อ ของผลิ ต ภั ณ ฑ์ ภาษาไทยให้ ดาวน์ โ หลดได้ ท ี
Warning
Caution
1. Usage of the Product ················································· 1
2. Specifications and Mode ········································· 1-2
2.1 Specifications ····················································· 1
2.2 Mode (function) ··················································· 2
4. Dimension and weight················································· 3
5. Before use ···························································· 3-5
5.1 Precaution for installation ······································ 3
5.2 Name of the parts ··········································· 4-5
5.3 Installing Battery ·················································· 5
5.4 Peel off protective film of screen ····························· 5
5.5 Attach/Remove sensor cap ·································· 5
6. How to use ··························································· 6-11
6.4 Procedures for auscultation mode ························· 11
7. Maintenance ··························································· 12
7.1 Precaution for maintenance ································· 12
7.2 Troubleshooting ············································ 12-13
MODEL STC-1
STEAM TRAP CHECKER
PRODUCT MANUAL
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.

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EPDT-345a

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Summary of Contents for Yoshitake STC-1

  • Page 1: Table Of Contents

    STEAM TRAP CHECKER PRODUCT MANUAL Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product, please read this manual before use. This manual shall be kept with care for future references.

  • Page 2: Usage Of The Product

    The STC-1steam trap checker is a simple checker that diagnoses the condition of steam trap, equipped with automatic steam trap diagnosis, operation auscultation, and steam piping surface temperature sensor functions. 2. Specifications and Mode 2.1 Specifications Model STC-1 Steam trap automatic diagnosis 2 seconds or 8 seconds time Working pressure for steam trap 0.05-8.0MPa...

  • Page 3: Mode (Function)

    2.2 Mode (Function) Mode(Function) Overview Steam trap automatic Automatically diagnosis the condition of steam trap(*4) diagnosis mode Surface temperature Indicates the surface temperature of steam piping sensor mode Auscultation mode Listens to the condition of steam trap *4: Results of steam trap automatic diagnosis Result Working condition of steam trap GOOD...

  • Page 4: Before Use

    5. Before use 5.1 Precaution for installation Warning 1. The product cannot be used in a place or atmosphere where explosive gas accumulates. * There is a risk of fire because the product is not an explosion-proof structure. 2. If there is a risk of being caught in an equipment, do not use earphone straps. * There is a risk of injury.

  • Page 5: Name Of The Parts

    5.2 Name of the parts Sensor cap (*5) POWER/MODE button TRAP button Sensor tip START button Screen button Without Sensor cap (See “5.5 Attach/Remove the sensor cap.”) Battery cover set screw (*6) Battery cover (*6) Product label Rubber cap (Earphone) Earphone plug size φ3.5 Outer diameter of resin part of earphone plug φ7mm or less Warning...

  • Page 6: Installing Battery

    *7: Types of Steam Trap Screen Description Type of steam traps DISC Disc type steam trap BUCKET Bucket type steam trap FLOAT Float type steam trap Thermostatic type steam trap THERMO (Bellows, Bi-metal) OTHERS Others (Orifice, Unknown type) 5.3 Installing battery 5.3.1 Loosen the battery cover set screw (Counterclockwise) with a flat-head screwdriver or coin, and remove the battery cover.

  • Page 7: How To Use

    6. How to use (Refer to “5.2 Name of the parts”) 6.1 Switch operation for Power (ON/OFF) and Mode (function) Battery Battery Full Battery level indicator (Caution Battery level is approximate and for reference only.) After showing To power ON/OFF, “YS”...

  • Page 8: Procedures For Steam Trap Automatic Diagnosis Mode

    6.2 Procedures for s team trap automatic diagnosis mode 6.2.1 Choose “Steam trap automatic diagnosis mode” by pressing “POWER/MODE” button, according to the procedures shown in 6.1 6.2.2 Select the type of steam trap by pressing “TRAP” button. 6.2.3 Select the pressure range by pressing “ ▲ ▼” button. Operation Button Switch and select a type of steam trap by pressing “TRAP”...
  • Page 9 6.2.4 Press the sensor tip vertically against the inlet side (flat surface) of the steam trap. Caution 1. During the steam trap diagnosis, press the sensor tip as vertically as possible. * If the sensor tip is pressed from an angle, the contact condition of the sensor will change and accurate measurement will not be possible.
  • Page 10 6.2.5 Press “Start” button to start the steam trap diagnosis. Vibration will notify you of starting of the measurement. Level gauge of measuring time Screen while automatic diagnosis (2 seconds or 8 seconds) Operation button * Timer function: Press down “START” button for 2 seconds and then vibrator operates. After 10 seconds, the diagnosis automatically starts.
  • Page 11 * If the tip of the pressed sensor is disconnected, the screen will show “ERROR.” Please start again with the procedures shown in 6.2.4. ERROR Screen 6.2.6 Diagnosis completes with vibrator operation. (After 2seconds or 8 seconds) 6.2.7 The screen displays the diagnosis result. (LED turns on for about 5 seconds). * Please refer to “*4: Results of steam trap automatic diagnosis”...

  • Page 12: Procedures For Surface Temperature Sensor Mode

    6.3 Procedures for surface temperature sensor mode 6.3.1 Choose “Surface temperature sensor mode” by pressing “POWER/MODE” button, according to the procedures shown in 6.1. 6.3.2 Press the sensor tip against the object and measure the temperature. (Refer to 6.2.4.) Operation button Screen while surface temperature sensor mode 6.4 Procedures for Auscultation mode 6.4.1 Choose “Auscultation mode”...

  • Page 13: Maintenance

    7. Maintenance 7.1 Precautions for maintenance Caution Do not disassemble the product. * There is a risk of electric shock or fire. 7.2 Troubleshooting Trouble Cause Remedy No batteries No display even after Install the batteries correctly. pressing Battery polarity is not correct Replace the batteries.
  • Page 14 Trouble Cause Remedy Automatic power OFF does not function in Power does not turn The product is in surface surface temperature sensor mode or in OFF automatically temperature sensor mode or auscultation mode. Switch to steam trap even after 5 minutes. auscultation mode.

  • Page 15: Warranty Information

    Fire, flood, earthquake, thunder and other natural disasters. Consumable parts such as O-ring, gasket, diaphragm and etc. Yoshitake is not liable for any damage or loss caused by malfunction or defect of the product. INTERNATIONAL DEPT. 955-5, Miyamae, Irukadeshinden, Komaki, Aichi, 485-0084, Japan...

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