Working Principle - Velleman HR7A006 Bedienungsanleitung

Soft jewellery:
pearls, emerald, ivory, coral, agate, sea turtle
shells etc...
Welded, plated, glued items
Watches:
unless diving watches with depth rating over 50m
(150 ft)
Other:
glass, ceramic, camera filters with known cracks
4. Features
• for cleaning of: jewellery, dentures, eyeglasses, electric shaver heads, CDs/VCDs/DVDs etc.
• 2 colour LED display: 1 to 30 minute timer, 5 temperature settings, working status indicators
• cooling fan
• two ceramic heaters
• overheating protection
5.

Working principle

The principle behind ultrasonic cleaning is cavitation.
When the ultrasonic cleaner is switched on, 3-dimensional sound waves of alternating positive
and negative pressure are generated and transmitted into the water in the tank. These sound
waves created micron-sized bubbles that grow and build up energy during negative pressure and
implode at a very high speed during positive pressure (43,000 times per second). These
implosions of high energy bubbles create cavities that literally pull contaminants of the surface
(at speeds up to 400km/h). Due to the size of the bubbles, they are effective in removing
contaminants from the smallest of crevices but harmless to the substrate itself.
Usually water is used as cleaning agent as it is inexpensive and environmentally safe.
6. Overview
Refer to the illustrations on page 2 of this manual.
general
A
B
C
D
E
F
control panel
1 status indicator
2 On/off button
3 function button
4 degas indicator
5 normal cleaning indicator
6 heater indicator
7 actual liquid temperature
8 timer display
9 set temperature
10 quick set time button (Time)
14.11.2011
ITEMS NOT SUITABLE FOR ULTRASONIC CLEANING
transparent lid
LED light
stainless steel tank
control panel
housing
handles
Green: normal working status, ready.
Red: fault condition, overheated. Let the VTUSC6 cool
down for at least 15 minutes.
Press to switch the device on. Default time and
temperature settings are shown (5 minutes, 40°C). Press
again to start the cleaning process; it stops automatically
when the timer expires. Press the button at any time to
interrupt the cleaning process.
Press to start degassing function (degas). The indicator
[4] will flash during the degas process (±2minutes). To
interrupt the process, press the button again. See note
below the table.
Flashing during the degassing process.
Illuminated during normal cleaning process .
Illuminated when heater is active.
Displays temperature of liquid in the tank.
Countdown timer indicates remaining cleaning time.
Indicates the selected temperature.
Press to show initial timer (05:00). Press again to
increase the timer by 5 minutes.
VTUSC6
As these items are soft, scratching may occur
during the cleaning process.
Ultrasonic cleaning may increase the gaps inside
welded joints, plated coating or glue which may
lead to breaking loose.
The strong penetration capabilities of the
ultrasonic waves may cause water to penetrate
weaker sealed watches.
Crack size may be increased by the ultrasonic
waves.
G drainage valve
H drainage pipe
I power button
J power socket
K hose
L power cord
M basket
5
©Velleman nv