Conversion And Extension; Changing The Flow Direction (Nl2, Nl4, Nl6); Conversion Of 3/2 Directional Valve; Troubleshooting - Emerson AVENTICS NL1 Instrucciones De Servicio

9 Conversion and extension

Danger of injury in case of disassembly or replacement under pressure or
voltage!
Disassembling or replacement when under pressure or electrical voltage may
lead to injuries and damage to the product or system components.
1. Make sure that the relevant system part is not under pressure or voltage be-
fore disassembling the product or exchanging parts.
2. Protect the system against being restarted.
Danger of burns!
The surfaces of adjacent system components can become hot during opera-
tion.
Let the system component cool off before disassembling it.
u

9.1 Changing the flow direction (NL2, NL4, NL6)

g Fig. 6, g Fig. 9

9.1.1 Conversion of 3/2 directional valve

g Fig. 6
On all components, the flow direction change is performed by rotating an instal-
lation by 180° around the vertical axis.
The housing covers need to be changed for the purpose.
1. Remove the housing cover on the front and rear and replace at the opposite
side (the order number can now be read off at the front).
2. Mount components at position 180° around the vertical axis.
Conversion of filling valve, adjustable filling time
g Fig. 9
Since the adjustment screw is located at the front on these components, installa-
tion in a position rotated by 180° around the vertical axis is not appropriate.
Install the components rotated 180° around the lateral axis to change the flow
u
direction.
Filling valve, 3/2 directional valve, electrically operated (NL1)
g Fig. 9
Since the exhaust is located at the back side on these components, installation in
a position rotated by 180° around the vertical axis is not appropriate.
Install the components rotated 180° around the lateral axis to change the flow
u
direction.

10 Troubleshooting

Malfunction Possible cause
Pressure/flow level is not Operating pressure too low
reached or drops off slowly.
Leak on tubing

11 Technical data

Maximum permissible pressure, temperature range, and thread connection are
indicated on the products.
General data
Mounting orientation Min./max. medium/ambient temperature
Further technical data can be found in our online catalog.
AVENTICS™ NL1 | NL2 | NL4 | NL6 | R412015554-BAL-001-AE | English
CAUTION
CAUTION
Remedy
• Set higher operating pres-
sure
• Check tubing diameter
Check tubing and tubing con-
nections
Any -10 °C /+60 °C

12 Appendix

Figures: View varies according to the series.
Fig. 1: BAV 3/2 shut-off valve – mechanically operated | Series NL1, NL2, NL4,
NL6
Number of possible locks:
NL1: 1-2
NL2, NL4: 1-3
NL6: 1
Fig. 2: SOV 3/2 directional valve – pneumatically operated, example | Series NL1,
NL2, NL4, NL6
Fig. 3: SOV 3/2 directional valve – electrically operated with continuous pressure
supply | Series NL1
p
2
p p
1 1
13