Introduction
This document serves as the user manual for the NAVAC Flex72 Manifold Gauge with Digital Display, model N2D72. Designed for HVAC professionals, this advanced tool integrates traditional manifold gauge functionality with digital precision for accurate pressure and temperature readings.
NAVAC Inc. provides this guide to ensure users can effectively set up, operate, maintain, and troubleshoot the N2D72 unit, empowering technicians to work smarter and more efficiently.
Key Features and Specifications
The Flex72 Manifold Gauge offers:
- Digital display for pressure and temperature readings.
- Support for a wide range of refrigerants (e.g., R11, R134A, R410A, R404A, R744, R1234YF, and many others).
- Multiple pressure units (bar, psi, Kpa, Mpa, kgf/cm²) and temperature units (°C, °F).
- Vacuum measurement in inHg.
- Durable construction with ABS/PC/TPE materials.
- Operation temperature range: -14°F to 122°F (-14~122°F).
- Powered by 2x 9V LR dry batteries.
Operational Guidance
The manual details the initial setup process, including battery installation and gauge startup. It guides users through setting the refrigerant type, pressure units, and temperature units using intuitive control keys.
Key operational sections include:
- Connecting refrigerant hoses and control valve operation.
- Preparation for pressure measuring, emphasizing safety precautions.
- Zeroing operation for accurate readings.
Maintenance and Troubleshooting
Proper maintenance ensures the longevity and accuracy of the N2D72 gauge. The guide covers:
- Gauge cleaning and copper connections cleaning.
- Hose condition checks and valve cleaning.
- Battery replacement procedures.
A troubleshooting section addresses common issues such as low battery indicators, automatic shut-off, display errors (OL, ERP FAIL), and provides possible reasons and solutions.
Warranty Information
NAVAC Inc. offers a 1-year warranty from the date of sales for the N2D72 unit. The warranty covers manufacturing defects but excludes consumables like refrigerant hoses and damages caused by misuse or human factors. Defective products within the warranty period will be repaired or replaced.
