Page 216 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

EXERCISE 174: Simulate And Rectify The Faults.Repeat

The Above Exercise For Uv Type Water

Purifier

Objectives

At the end of this exercise you shall be able to:
• to demonstration of Water purifier
• to component list of Water purifier
• dismantle all parts of Water purifier.

Requirements

Tools/ Equipments/ Instruments
• Water purifier - 1 No. • Multimeter 500 V - 1 No.
• Screw driver - 1 No. • Test lamp 40W/240V - 1 No.
• Combination pliers - 1 No.
Procedure

UV Water Purifiers
A UV water purifier utilizes ultraviolet rays to neutralize microorganisms such as bacteria, germs, and viruses,
rendering them harmless to our health. Here’s how it works:

1 UV Emission: Inside the purifier, there’s a UV lamp that emits ultraviolet rays at a wavelength of 254 nm.
These rays are potent enough to scramble the DNA of living organisms, making them ineffective.

2 Pathogen Elimination: The UV dosage emitted by the lamp is measured in mJ/cm². The higher the dosage,
the more effective the UV water purifier becomes. It can eliminate up to 99.99% of harmful microorganisms,
including:
• Algae
• Cholera
• Cryptosporidium
• Dysentery Bacilli

• E. Coli
• Fungi
• Giardia

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