Chapter 2 - General Working Principle; Introduction - TEXA Konfort 700R Series Manual

Konfort Series 700R Service Manual
CHAPTER 2 – GENERAL WORKING PRINCIPLE
2.1

Introduction

From a general point of view, the complete operating cycle of any Konfort
A/C recharging unit consists in five basic steps:
Refrigerant recovery and used oil drain;
Vacuum creation;
Oil/UV injection;
Refrigerant injection;
Recovery of the residual refrigerant from the hydraulic circuit of the
equipment.
This operating cycle is schematized by the following flowchart:
Image 2.1 – Simplified block diagram of the complete operating cycle
Once the initial setup of the equipment will be completed, the compressor
starts to recovery the refrigerant from the system. When the pressure
measured by the main sensor decreases under a threshold of -150mBars
relative (850mBars absolute), the compressor stops and the equipment
performs a check of the reached pressure: if the pressure remains below
the threshold of 600mBars relative (1600mBars absolute), the unit
proceeds with the next step, otherwise it restarts the compressor for a
further recovery. This architecture allows the equipment to recover all
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of a Konfort equipment
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