VYC 003 Service manual

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Ultrasonic leak detector. Mod. 003.
To detect leaks:
In condensate purgers
In valve seals
Checking for wear on bearings
Solving mechanical problems in general

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Safety warning
Please read this before using your Detector
WARNING!
Misuse of the Ultrasonic leak detector could result in death or serious injury. Please follow all the
safety instructions. Do not try to carry out repairs or adjustments while the equipment is in
operation. Make sure that you turn off and block all the electrical and mechanical sources before
doing any corrective or preventative maintenance work. Always check local guidelines on
maintenance and prevention.
Safety instructions:
Although the Ultrasound leak detector is designed to be used when the equipment is in operation,
the proximity of hot pipes, electrical equipment and rotating parts is potentially dangerous for the
user. Take great care when using the Detector close to energized equipment. Avoid direct contact
with hot parts or piping, any part in movement and electrical connections. Do not try to confirm the
results by touching the inspected equipment with your hands or fingers. Make sure that you use
the appropriate lockout procedures when carrying out repairs.
Take care with loose hanging parts, such as the wrist strap and the headphone cable, when
carrying out inspections near moving mechanical devices, since these elements may become
trapped. Do not touch moving parts with the ultrasonic probe. This will not only damage the part
and the Detector, it could also cause personal injury.
Wear the appropriate protective clothing. Do not get too close to the point of verification. Your
Detector can locate problems from a distance. Take care when working around high temperature
pipes. Wear protective clothing and do not try to touch any of the pipes or equipment while they
are hot. Check with your safety officer before entering the work area and follow all the safety
procedures.

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Index
Page
1. Ultrasonic leak detector. Mod.003 4
2. Table of contents 5
Components 5
Measuring gun 5
oBargraph display 5
oBattery life display 5
oSensitivity selector 5
oConnector for headphones 5
oSwitch 5
Stethoscope module 6
Headphones 6
3. Uses of the Ultrasonic leak detector. Mod.003 6
3.1. Detection of leaks in condensate purgers 6
Confirmation of: Steam/ Condensation/ Flash Steam 7
Inverted floater purger 7
Closed buiy purger with a thermostatic element 8
Thermodynamic purger 8
Thermostatic purger. (Bimetallic or with balanced element) 8
3.2. Detection of leaks in valve seals 9
Detecting bearing faults 9
Confirming a leak 10
3.3. Checking for wear on bearings 10
Detecting bearing faults 11
Low velocity bearings 11
4. Solving general mechanical problems 12
Solving problems 13
5. Ultrasound technology 13
6. General catalogue 14

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1. Ultrasonic leak detector. Mod. 003
It provides a simple way to detect leaks and carry out accurate mechanical inspections using
advanced ultrasound technology.
Before you start taking measurements, we recommend that you first familiarize yourself
with the components of your equipment.

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2. Table of contents
· Components
· Measuring gun
The main component of the Detector is the ultrasound gun. We will examine each part from back
to front.
· Bar graph display
The screen contains a bar graph display with ten LED segments which indicate the intensity of the
ultrasound signal. If only a few LEDs are lit up, this indicates a low level of ultrasound, while more
intense ultrasound signals will lead to a large number of LEDs being lit up.
· Battery life display
This red light only comes on when the batteries need recharging.
NOTE: When the on/off switch is moved to the "on" position, the battery life light will flash before turning off
again. This is normal and does not indicate the condition of the battery.
· Sensitivity selector
There are eight (8) levels of sensitivity that are read in decibels displayed from "0" to "70". As the
dial is turned to the right, toward "0", the sensitivity of the instrument increases. As the selector is
turned to the left, toward "70", the sensitivity will decrease. A low level ultrasound emission
produces low amplitude. To detect low level ultrasounds, the instrument must be in a position of
high sensitivity. 0 is the highest sensitivity setting. For higher amplitude signals, move the
sensitivity to the left towards the "70".
Combination of the bar graph display and sensitivity selector: Each bar lit up in the bar graph is
equal to 3 dB. Example A: Sensitivity selector set at 0 dB and the LED bar graph has 3 bars lit, so
the total reading is 0 dB+9 dB=9 dB. Example B: Sensitivity selector set at 40 dB and the bar
graph has 4 bars lit, so the total reading is 40 dB+12 dB=52 dB.
· Connector for headphones
This is where the headphones are connected. Ensure they are connected firmly, until you hear a
click. If you are going to use a recorder, please insert the connector cable here. (It uses a
Miniphone connector).
· Switch
This is found at the bottom of the Detector. The Detector is always "switched off" until this switch
is pressed. To operate it, simply press the switch, and release the switch to turn off the instrument.