Atlas Copco FD300 User Manual

Atlas Copco Air Dryers
Important:
This book applies exclusively to FD dryers as from following serial numbers onwards and filled with
refrigerant R404a; see data plate:
FD260: AIQ-124 045
FD300: AIQ-140 200
FD380: AIQ-129 800
FD450: AIQ-140 550
FD700: AIQ-750 005
*2920135101*
No. 2920 1351 01
Registration code: APC FD / 38 / 988
Replaces No. 2920 1351 00 and for FD700 only 2920 1371 00
1998-03
FD(W)260, -300, -380, -450, -700
Instruction Book
This instruction book meets the requirements for instructions specified by the machinery
directive 89/392/EEC and is valid for CE as well as non-CE labelled machines

Atlas Copco FD300 Specifications

General

Brand	Atlas Copco
Model	FD300
Category	Dehumidifier
Language	English

Summary

2 INSTALLATION

2.3 Installation instructions

3 OPERATING INSTRUCTIONS

3.1 Initial start (Fig. 10)

3.2 Starting (Fig. 10)

3.3 During operation

3.4 Stopping (Fig. 10)

3.5 Possible causes of unstable or too high pressure dewpoint temperature

Lists common issues leading to high pressure dewpoint temperatures, such as overload, high ambient temps, and system problems.

4 MAINTENANCE

5 SETTINGS

5.1 Automatic expansion valve

5.2 Switches (Figs. 4b and 5b)

6 PROBLEM SOLVING

1. Pressure dewpoint temperature too high

Addresses issues causing high pressure dewpoint, including inlet temp, ambient temp, cooling flow, and refrigerant shortage.

2. Condenser pressure too high or too low

Covers causes for incorrect condenser pressure, such as faulty switches, clogged condensers, or insufficient cooling.

3. Compressor stops or does not start

Lists reasons for compressor failure, including power interruption, thermal overload, or tripped high-pressure switch.

4. Pressure drop over dryer too high

Discusses causes for excessive pressure drop, primarily a clogged air inlet strainer.

5. Condensate trap remains inoperative

Explains how to fix a clogged automatic drain system in the condensate trap.

6. Condensate trap continuously discharges air and water

7. Evaporator pressure is too high or too low

Covers causes for incorrect evaporator pressure, such as expansion valve issues or refrigerant shortage.