Flowserve NRG 16-38S User Manual
NRG 16-38S
NRG 16-39S
Installation Instructions 810746-00
Level Electrode NRG 16-38S
Level Electrode NRG 16-39 S
1
Contents
Page
Important Notes
Usage for the intended purpose ...................................................................................... 8
Safety note ......................................................................................................................8
Danger ............................................................................................................................ 8
Classification pursuant to article 1 PED ..........................................................................8
Explanatory Notes
Scope of supply ..............................................................................................................9
Description ......................................................................................................................9
Function ........................................................................................................................10
System components .....................................................................................................10
Design ...........................................................................................................................10
Technical data .........................................................................................................11, 12
Corrosion resistance .....................................................................................................13
Sizing ............................................................................................................................ 13
Name plate/marking ................................................................................................13, 14
Installation
NRG 16-38S, NRG 16-39S (limiter NRG 16-11), step 1 ............................................. 15
NRG 16-38S, NRG 16-39S, step 2.............................................................................. 15
Installing terminal box of level transmitter NRGT 26-1, step 3 ..................................... 16
Examples of installation ............................................................................................... 23
Wiring
NRG 16-11 ....................................................................................................................17
Wiring diagram NRG 16-11 ........................................................................................... 17
NRGT 26-1 ................................................................................................................... 18
Wiring diagram NRGT 26-1........................................................................................... 18
Basic Settings
Factory setting NRGT 26-1 ...........................................................................................19
Establishing active measuring range (control range) ....................................................19
Commissioning
Check wiring..................................................................................................................20
Apply mains voltage ......................................................................................................20
Adjust lower measuring point ........................................................................................20
Adjust upper measuring point ....................................................................................... 20
Operation
NRG 16-38S, NRG 16-39S .......................................................................................... 21
Malfunctions
Fault finding list for troubleshooting ...............................................................................22
2
Dimensions
(330.5)
Fig. 1
NRG 16-11
1 2
3
NRGT 26-1
NRG 16-38S
NRGT 26-1
1
Max. length of installation
at 238 °C
2
Measuring range
NRG 16-11
3
Range for low water level
1 2
358
300
462
400
568
1095
1199
1304
1408
1513
1621
2141
673
779
884
989
500
600
700
800
900
1000
1100
1200
1300
1400
1500
2000
3
Dimensions
Fig. 2
4
1
NRG 16-39S
Parts Drawings
A
E
B
Fig. 3
C
D
U
F
Fig. 4
5
Parts Drawings
MAX 70°C
MAX 95%
Fig. 5
Fig. 6
G H
T
I
H
L NJ
MK
S
P
O
Q
R
6
Key
A
Measuring electrode
B
Bore
C
Spring
D
Electrode tip
E
PTFE insulating tube
F
STARLOCK
G
Housing screws M4
H
Cable gland M 16 (PG 9), M 20 (PG 16)
I
Housing cover
J
Switch for measuring range
K
Potentiometer for lower measuring point (4 mA)
L
LED “Liquid level 0 %”
M
LED “Liquid level greater than 0 %, less than 100 %”
N
LED “Liquid level 100 %”
O
Potentiometer for upper measuring point
P
Terminal lugs for voltage measurement
Q
Thermal fuse T
R
Terminal strips
S
PE connection
T
Fixing nut
®
retaining ring
102 °C
max
U
Spacer disc
7
Important Notes
Usage for the intended purpose
Use level electrodes type NRG 16-38 S, NRG 16-39 S only in conjunction with
controller type NRS 1-7 for high-liquid level limiting (M
AX. level alarm) and level
monitoring in marine steam boilers and (pressurized) hot water installations.
Safety Note
The equipment must only be installed by qualified staff.
Qualified staff are those persons who – through adequate training in electrical
engineering, the use and application of safety equipment in accordance with
regulations concerning electrical safety systems, and first aid & accident
prevention – have achieved a recognised level of competence appropriate to the
installation and commissioning of this device.
Danger
When loosening the electrode steam or hot water might escape.
This presents the danger of severe injuries to the whole body. It is
therefore essential not to remove the electrode unless the boiler pressure
is verified to be zero.
The electrode is hot during operation.
This presents the danger of severe burns to hands and arms.
Installation and maintenance work should only be carried out when the
system is cold.
Classification pursuant to article 1 PED*)
Category none
Designation Safety accessory
CE marking no
*) PED = Pressure Equipment Directive
8
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