Thermo Scientific VH-D20 Operating Manual page 126

7 • Maintenance and Service
Preparations
Follow these steps
Page 126
CAUTION—Explosive Gas Mixtures from Alcoholic Cleaning Detergents
Alcohol-containing cleaning detergents may form flammable and
explosive gas mixtures with air.
• Use such cleaning detergents only when required and only in
adequately ventilated rooms.
• Avoid open flames or exposure to excessive heat during the cleaning
process.
• Wipe the cleaned components thoroughly dry after cleaning. Do not
operate the device before it is completely dry.
NOTICE
Observe the following:
• Only use cleaning detergents that will not damage the surfaces of
the system.
• Never use sharp tools or brushes for cleaning any surfaces.
• Do not use sprays for cleaning.
• Prevent cleaning detergent from entering the flow path.
• Do not use excessively wetted cloth or wipes for cleaning. Prevent
any liquids from entering the functional components of the device.
Liquids can cause a short circuit when getting in contact with the
electronic components.
1. Turn off the power to the device and disconnect the power cord
from the power source.
1. Wipe the surfaces clean with a clean, dry, soft, lint-free cloth or
wipe. If necessary, slightly dampen the cloth or wipe with a solution
of lukewarm water and a suitable cleaning detergent.
2. Allow the cleaning detergent to react as recommended by the
manufacturer.
3. Wipe the cleaned surfaces with purified water to ensure that all
cleaning detergent residues have been removed.
4. Wipe the surfaces dry using a soft, lint-free cloth or wipe.
Charged Aerosol Detectors (VH-D20, VF-D20)
Operating Manual