Create RO Purifier User Manual

I'm looking for an experienced technical writer to create a user manual for our reverse osmosis water purifier. The manual should be clear, concise, and user-friendly, targeting general consumers.

Requirements:
- Comprehensive product description
- Step-by-step installation instructions
- How to use
- Troubleshooting section
- Safety precautions
-Parts of your purifier
-Specifications
-System maintenance

The final document should be delivered in PDF format. Ideal candidates should have:
- Proven technical writing experience
- Ability to simplify complex information
- Strong attention to detail
- Familiarity with water purification systems is a plus

Please provide samples of previous work.