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No. 2920 1351 01
Registration code: APC FD / 38 / 988
Replaces No. 2920 1351 00 and for FD700 only 2920 1371 00
1998-03
*2920135101*
FD(W)260, -300, -380, -450, -700
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
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
Air Dryers
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Summary of Contents for Atlas Copco FD450
- Page 1 FD260: AIQ-124 045 FD300: AIQ-140 200 FD380: AIQ-129 800 FD450: AIQ-140 550 FD700: AIQ-750 005 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 No.
- Page 2 Atlas Copco. Follow all applicable safety precautions, amongst others those mentioned on the cover of this book. Repair operations must be performed by trained personnel from Atlas Copco, who can also be contacted if any further information is desired.
- Page 3 (1). air- and water-cooled dryers. F6837 Fig. 1. Front view of FD450 2920 1351 01...
- Page 4 Instruction book Air inlet connection Insulating block Refrigerant condenser Air outlet connection Cyclone condensate separator Liquid refrigerant receiver Refrigerant compressor/motor Condensate trap with automatic Refrigerant shut-off valve Condenser cooling fan motor discharge Liquid refrigerant dryer/filter High pressure shut-down switch Automatic condensate drain hose Refrigerant expansion valve Fan control switch Manual condensate drain valve...
- Page 5 Instruction book In expansion valve (13) some of the expanding liquid refrigerant evaporates, for which the required heat is withdrawn from the refrigerant itself. Compressor (M1) delivers hot, high-pressure refrigerant gas, which flows, via the coil of liquid separator (7), through The refrigerant enters the heat exchanger/evaporator (15) where condenser (9) where most of the refrigerant condenses.
- Page 6 High pressure shut-down switch Fan control switch Condensate trap with automatic discharge Refrigerant shut-off valve Condenser Liquid refrigerant receiver Refrigerant dryer/filter F6839 Refrigerant expansion valve Liquid separator Electric cubicle Fig. 4b Figs. 4. Side views of FD450 2920 1351 01...
- Page 7 Instruction book Fig. 5a Refrigerant compressor/motor High pressure shut-down switch Liquid refrigerant receiver Condenser Flow regulating valve Refrigerant shut-off valve Electric cubicle Condensate trap with automatic discharge Refrigerant shut-off valve F6841 Refrigerant dryer/filter Refrigerant expansion valve Liquid separator Fig. 5b Figs.
- Page 8 Instruction book Altering the set point value (indicated "L1"): Press key (5); the current value blinks on the display. Press the up (1) or down (2) key until the desired value is Expansion valve (13) maintains the evaporating temperature reached. between 1 and -1°C (34 and 30°F);...
- Page 9 Fig. 6a. Dimension drawing of FD260 up to FD380 50/60 Hz and FD450 50 Hz...
- Page 10 Fig. 6b. Dimension drawing of FD260 W up to FD380 W 50/60 Hz and FD450 W 50 Hz...
- Page 11 Fig. 6c. Dimension drawing of FD700 50/60 Hz...
- Page 12 Fig. 6d. Dimension drawing of FD700 W 50/60 Hz...
- Page 13 Instruction book FD dryer Air receiver with condensate drain By-pass system 2a. DD-type general-purpose prefilter Pressure gauge By-pass valve 2b. PD-type high-efficiency prefilter Drain pipes Dryer inlet valve 2c. DD-type afterfilter Dryer outlet valve Fig. 7. Installation proposal 4. A sticker dealing in short with the operating instructions and explaining the pictographs is delivered with the literature set.
- Page 14 Instruction book Air inlet connection Air outlet connection Cable gland Manual condensate drain Automatic condensate drain Water inlet, condenser Water outlet, condenser Insulating block with heat exchangers Fig. 8. FD380 W Switch off and depressurize the dryer before starting maintenance or repairs Manual condensate drain Automatic condensate drain Pressure dewpoint...
- Page 15 2. Open the refrigerant shut-off valves (11-Fig. 2 and on water- Altitude operation cooled dryers also 4-Fig. 5a) as follows: take the protecting Consult Atlas Copco if operating above 3000 m. cap off the valve, then screw the spindle fully out and refit the cap.
- Page 16 Instruction book energize the crankcase heater. Never start the dryer without Condenser externally clogged (air-cooled dryers) preheating as this may cause serious damage to the Malfunctioning of fan control switch (S3-Fig. 4b) on refrigerant compressor. air-cooled dryers or malfunctioning of the cooling water Check that voltage on indicator lamp (H1) is alight.
- Page 17 Instruction book M1. Refrigerant compressor/motor Liquid refrigerant receiver Liquid refrigerant dryer/filter Condensate trap Refrigerant shut-off valve Flow regulating valve Liquid separator Condenser Fig. 11. Front view of FD380 W F6843 The automatic expansion valve (7-Fig. 4b and 9-Fig. 5b) is a The regulating and safety devices are factory-adjusted to obtain regulator which keeps the evaporator pressure, and optimum performance of the dryer.
- Page 18 7. Evaporator pressure is too high or too low g. Shortage of refrigerant a. Expansion valve incorrectly set g. Consult Atlas Copco a. Have expansion valve setting adjusted h. Refrigerant compressor does not run b. Expansion valve out of order h.
- Page 19 Instruction book 50 Hz 60 Hz Nominal conditions Compressed air inlet pressure ....... bar(e) Compressed air inlet temperature .
- Page 20 Instruction book Air dryer FD 450/450 W 700/700 W Location ............Indoors Indoors Medium to be dried .
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