Yoshitake STC-1 User manual

ڦEPDT-345aڦ
MODEL STC-1
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.
The symbols used in this manual have the following meanings.㻌Please note that Chinese language version
and Thai language version can be downloaded from the following website.
Website: http://www.yoshitake.jp/index.html
ᵢӝ૷Ⲻѣᮽᆿ㻻ֵ⭞䈪᱄Ҝ䈭Ԅԛс㖇൶с䖳䛂㼔㼠㼠㼜㻛㻛㼣㼣㼣㻚㼥㼛㼟㼔㼕㼠㼍㼗㼑㻚㼖㼜㻛㼏㼚䛃㻌
ถ้าต้องการ㻌ดาวน์โหลดคู่มือของผลิตภัณฑ์㻌ภาษาไทยให้㻌ดาวน์โหลดได้ที䛂㼔㼠㼠㼜㻛㻛㼣㼣㼣㻚㼥㼛㼟㼔㼕㼠㼍㼗㼑㻚㼖㼜㻛㼠㼔䛃㻌
Warning
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
Caution
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.
Table of Contents
1. Usage of the Product ················································· 1
2. Specifications and Mode ········································· 1-2
2.1 Specifications ····················································· 1
2.2 Mode (function)··················································· 2
3. Operation procedure ··············································· 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
6.1Switch operation for Power (ON/OFF) and Mode (function) ···· 6
6.2 Procedures for steam trap automatic diagnosis mode ··· 7-10
6.3 Procedures for surface temperature sensor mode ···· 11
6.4 Procedures for auscultation mode························· 11
7. Maintenance··························································· 12
7.1 Precaution for maintenance ································· 12
7.2 Troubleshooting ············································ 12-13
㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Warranty Information

㻝                 ڦEPDT-345aڦ
1. 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
time
2 seconds or 8 seconds
Working pressure for steam trap
automatic diagnosis
0.05-8.0MPa
Working temperature
for surface temperature sensing
0-300°C
Automatic power off
After 5 minutes
(While steam trap automatic diagnosis mode and not in operation)
Ambient temperature
0-40°C (Non-Freezing)
Where to use
Inside and outside (However, it should not be exposed to rain water).
Battery
DC1.5V AAA alkaline batteries 2pcs
Continuous use time: Approximately 8 hours(*1)
Accessories(*2)
Storage case, earphones, AAA alkaline batteries 2pcs(*3)
* 1 When using alkaline batteries ( 25°C,steam trap diagnosis mode).
* 2 Confirm the package contents before use. If any, please contact us.
* 3 The batteries are not included for overseas shipment (export).
Caution
Check the model on the product label (Please refer to “5.2 Name of the parts”) on the product against
the model ordered. Also make sure that accessories are stored. If the contents are different, please
contact us without using.
Check
□
□
№
(1)
(2)
Name
Steam trap checker
Case
Appearance
Q’ty
1
1
Check
□
□
№
(3)
(4)
Name
AAA alkaline batteries (*3)
Earphones
Appearance
Q’ty
2
1

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2.2 Mode (Function)
Mode(Function)
Overview
Steam trap automatic
diagnosis mode
Automatically diagnosis the condition of steam trap(*4)
Surface temperature
sensor mode
Indicates the surface temperature of steam piping
Auscultation mode
Listens to the condition of steam trap
*4: Results of steam trap automatic diagnosis
Result
Working condition of steam trap
GOOD
Good condition
CAUTION
Hard to diagnose whether GOOD or LEAK.
Caution required for the possibility of LEAK.
LEAK
High possibility of steam leakage
LOW TEMP
High possibility of clogged, not in service, or inadequately low capacity,
because the surface temperature is low.
3. Operation procedure
3.1 Steam trap automatic diagnosis mode
The product detects vibration and temperature during steam trap operation, performs automatic
diagnosis from the detected data, and displays the result on the screen.
㻌
3.2 Surface temperature sensor mode
The product detects the temperature of the steam trap and steam pipe and displays the temperature
on the screen.
㻌
3.3 Auscultation mode
The product detects vibration during the operation of the steam trap and auscultates the operating
condition.㻌
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4. Dimension and weight
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㻌
㻌
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㻌
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Weight: 214g (including batteries)
(211: Without sensor cap)
Label for peeling off the
protective screen film
(See
“5.4
Peel off the
protective screen film.”)

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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.
3.
Do not disassemble or modify the product.
* There is a risk of injury, electric shock, or fire.
4.
Do not operate the product while walking.
* There is a risk of accidents such as falling or collisions.
5. Do not give shock
to the product.
* There is a risk of injury, electric shock, or fire due to damage or deformation of parts.
6.
Avoid from water such as rain.
* If water enters, there is a risk of malfunction, heating, electric shock, or fire.
7. Do not mix foreign substances. (Do not use
the product in dusty place).
* There is a risk of malfunction or fire.
8. Do not leave the product in a place exposed to direct
sunlight, in a sun-heated car
, or near the fire,
where it has the risk of getting high temperature.
* There is a risk of battery leakage, heating, rupture, or fire.
9. Do not use the product if the battery ha
s leakage, or if strange odor, deformation, etc. are observed.
* There is a risk of heating, fire, or rupture.
* If the liquid leaks to your body, immediately rinse with clean water and consult a doctor.
Caution
1. When adopting earphones, work in two people because the surroundings danger cannot be predicted.
2.
If the product will not be in used for a long time, remove the batteries and store them
in a dry and cool place.
* There is a risk of battery leakage, rusting, malfunction or shorter service life.
3.
Do not use or store the product
near the blow out of steam, salty place, oily place, or in an atmosphere
of acid, strong alkali, or organic solvent.
* There is a risk of deformation, discoloration, or damage of the product.

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5.2 Name of the parts
Warning
Do not use the earphones when there is a risk of being caught in an equipment.
Spare parts are available for the parts *5 and *6.
(*6: Battery cover and battery cover set screw are available as a set.)
Manual operation button
Operation description
POWER/MODE
button
Power ON/OFF: Press down the button for 2 seconds or more.
Switch the mode
:
Steam trap automatic diagnosis àSurface temperature sensor à
Auscultation
TRAP
Button
Select a steam trap type.(*7)
DISC àBUCKET àFLOAT àTHERMO àOTHERS
▲䞉▼
Button
Select a pressure range. (Available while steam trap automatic diagnosis mode)
Adjust Vol
ume. (Available while auscultation mode)
Back light ON/OFF
: Press down the bottom ▲䞉▼for 2 seconds or more.
(However, invalid while auscultation mode)
START
Button
Start steam trap automatic diagnosis.
(Available while steam trap automatic diagnosis mode).
㻌
㻌
㻌
Without Sensor cap
(See
“5.5 Attach/Remove
the sensor cap.”)
Sensor cap (*5)
POWER/MODE button
TRAP button
START button
Screen
䕦䞉䕰button㻌
LED
Sensor tip
Battery cover set screw (*6)
Product label
Battery cover (*6)
Rubber cap (Earphone)
Earphone plug size
䠖φ3.5
Outer diameter of r
esin part of earphone plug䠖φ7mm
or less
Wa

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㻌
㻌
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.
5.3.2 Install the batteries with the polarity of the battery (accessory) matched.
5.3.3 Attach the battery cover and tighten the battery cover set screw with a flat-head screwdriver or coin
while holding the battery cover. (Clockwise).
Caution
1. If the product will not be in used for a long time, remove the batteries.
*There is a risk of battery leakage.
2.
Do not overtighten the battery cover set screw.
*The case and battery cover will be damaged.
5.4 Peel off protective screen film
Gently peel off the protective film while holding the peel-off label.
5.5 Attach/Remove sensor cap
5.5.1 Loosen the sensor cap by turning it counterclockwise, and remove it
5.5.2 To attach the sensor cap, tighten it by turning it clockwise.
Loosen
Tighten
Peel off the protective screen film
while holding this part.
*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
THERMO
Thermostatic type steam trap
(Bellows, Bi-metal)
OTHERS
Others (Orifice, Unknown type)

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Battery
Full
Battery
low
6. How to use (Refer to “5.2 Name of the parts”)
6.1 Switch operation for Power (ON/OFF) and Mode (function)
After showing
“YS” on the Screen
Screen.
Screen
Screen
Caution
1. Do not press the button with a hard object such as metal or resin.
* Button will be damaged.
Steam trap automatic
diagnosis mode
Auscultation mode
To switch the mode,
press “
POWER/MODE”button
To power ON/OFF,
p
ress down
“POWER/MODE”
button
for 2 seconds or more
Operation Button
Battery level indicator
(Caution
䠖Battery level is approximate
and for
reference only.)
Surface temperature
sensor mode

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6.2 Procedures for steam 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 “▲䞉▼” button.
Operation Button
Steam trap automatic
diagnosis screen
Table 1: Pressure range
№
Pressure Range
1
0.05 MPa or more and less than 0.1 MPa
2
0.1 MPa or more and less than 0.5 MPa
3
0.5 MPa or more and less than 1.0 MPa
4
1.0 MPa or more and less than 2.0 MPa
5
2.0 MPa or more and less than 3.0 MPa
6
3.0 MPa or more and less than 4.0 MPa
7
4.0 MPa or more and less than 5.0 MPa
8
5.0 MPa or more and less than 6.0 MPa
9
6.0 MPa or more and less than 7.0 MPa
10
7.0 MPa or more and less than 8.0 MPa
㻌
Switch and select a type of steam trap
by pressing “TRAP” buttom.
(DISC
àBUCKET àFLOAT àTHERMO à
OTHERS)
Refer to the table “*7: Types of Steam Trap” in “5.2 Name
of the parts.”
Switch and select a pressure range
by pressing “▲
䞉
▼” button.

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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. It is recommended to create a flat surface (at least φ6
)
by sanding the measurement surface.
2. Measure the steam trap by pressing the sensor tip at the same position.
* Diagnosis result will differ depending on the measurement positions.
3. Do not push the sensor too much.
* It will lead to damaging the tip.
Sensor tip
The tip retracts
when pressed
Inlet side of steam trap
(Flat surface)
㼃㼔㼑㼚㻌㼟㼑㼚㼟㼛㼞㻌㼠㼕㼜㻌
㼕㼟㻌㼜㼞㼑㼟㼟㼑㼐㻌
Inlet side of
steam trap

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6.2.5 Press “Start” button to start the steam trap diagnosis.
Vibration will notify you of starting of the measurement.
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.
Please use this function when you need time to press down the sensor tip on a steam trap in a deep
place.
Caution
Please us
e the sensor as far as it can be confirmed that the sensor tip is pressed vertically against
the inlet side (flat surface) of the steam trap.
Push the sensor tip vertically against the inlet side (flat surface) of the
steam trap until the vibrator operates.
(After 12 seconds to 18 seconds).
Screen while preparation
(10 seconds)
Screen while automatic diagnosis
(2
seconds or 8 seconds)
Level gauge of
measuring time