Festo LFR EX4 Series Instructions & Operating

LFR-...-EX4-...
Filter regulator
Instructions | Operating
8107996
2019­02b
[8107185]
Translation of the original instructions
1 Identification EX
Identification mark
II 2G Ex h IIC T6 Gb X
II 2D Ex h IIIC T85°C Db X
Tab. 1
2 Further applicable documents
NOTICE!
Technical data for the product can have different values in other documents. For
operation in an explosive atmosphere, the technical data in this document always
have priority.
All available documents for the product è www.festo.com/pk.
3 Safety
3.1 Safety instructions
– The device can be used under the stated operating conditions in zone 1,
explosive gas atmospheres, and in zone 21, explosive dust atmospheres.
– The product may only be used in its original status without unauthorised
modifications.
– Only use the product if it is in perfect technical condition.
– All work must be carried out outside of potentially explosive areas.
– Observe the specifications on the product labelling.
– Earth the device via the earthing screw.
– Only use media in accordance with the specifications è 11 Technical data.
3.2 Intended use
The filter regulating valve LFR regulates the compressed air in the subsequent
string to the set output pressure. The LFR thereby smoothes out pressure fluctu­
ations.
3.3 Identification X: special conditions
– Danger of electrostatic discharge.
Ambient temperature T18: -20 °C £ T
–
– Ambient temperature T3: -40 °C £ T
4 Further information
– Accessories è www.festo.com/catalogue.
– Spare parts è www.festo.com/spareparts.
5 Service
Contact your regional Festo contact person if you have technical questions
è www.festo.com.
6 Product overview
6.1 Function
The filter regulating valve LFR removes dirt particles and condensate. The output
pressure can be adjusted within the pressure range.
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
+49 711 347­0
www.festo.com
8107996
£ +80 °C
a
£ +80 °C
a
6.2 Product variants
Ambient temperature T18: -20 °C ... +80 °C
Connection Type
¼" LFR­1/4­D­5M­O­MIDI­T18­EX4
LFR­1/4­D­O­MIDI­T18­EX4
LFR­1/4­D­16­5M­O­MIDI­T18­EX4
LFR­1/4­D­16­O­MIDI­T18­EX4
LFR­N1/4­D­5M­O­MIDI­T18­EX4
LFR­N1/4­D­O­MIDI­T18­EX4
LFR­N1/4­D­16­5M­O­MIDI­T18­EX4
LFR­N1/4­D­16­O­MIDI­T18­EX4
½" LFR­1/2­D­5M­O­MIDI­T18­EX4
LFR­1/2­D­O­MIDI­T18­EX4
LFR­1/2­D­16­5M­O­MIDI­T18­EX4
LFR­1/2­D­16­O­MIDI­T18­EX4
LFR­N1/2­D­5M­O­MIDI­T18­EX4
LFR­N1/2­D­O­MIDI­T18­EX4
LFR­N1/2­D­16­5M­O­MIDI­T18­EX4
LFR­N1/2­D­16­O­MIDI­T18­EX4
Tab. 2
Ambient temperature T3: -40 °C ... +80 °C
Connection Type
¼" LFR­1/4­D­5M­O­MIDI­T3­EX4
LFR­1/4­D­O­MIDI­T3­EX4
LFR­1/4­D­16­5M­O­MIDI­T3­EX4
LFR­1/4­D­16­O­MIDI­T3­EX4
LFR­N1/4­D­5M­O­MIDI­T3­EX4
LFR­N1/4­D­O­MIDI­T3­EX4
LFR­N1/4­D­16­5M­O­MIDI­T3­EX4
LFR­N1/4­D­16­O­MIDI­T3­EX4
½" LFR­1/2­D­5M­O­MIDI­T3­EX4
LFR­1/2­D­O­MIDI­T3­EX4
LFR­1/2­D­16­5M­O­MIDI­T3­EX4
LFR­1/2­D­16­O­MIDI­T3­EX4
LFR­N1/2­D­5M­O­MIDI­T3­EX4
LFR­N1/2­D­O­MIDI­T3­EX4
LFR­N1/2­D­16­5M­O­MIDI­T3­EX4
LFR­N1/2­D­16­O­MIDI­T3­EX4
Tab. 3
7 Assembly and installation
1 Indication of flow direction
Fig. 1
7.1 Filter regulator
1. Observe the flow direction 1 after 2.
2. Place the device at least 80 mm below the filter bowl.
3. Position the device vertically (_ 5°).
When assembling filter combinations, observe the sequence along the flow direc­
tion.
7.2 Pressure gauge
1. Remove the plug screw 2.
2. Turn pressure gauge with seal to the stop.
Part number
4772764
4772765
4772766
4772767
4772772
4772773
4772774
4772775
4772768
4772769
4772770
4772771
4772776
4772777
4772778
4772779
Part number
5271792
5271793
5271794
5271795
5271800
5271801
5271802
5271803
5271796
5271797
5271798
5271799
5271804
5271805
5271806
5271807
2 Plug screw