Krom Schroder DL 5A, DL 5K, DL 5AT, DL 5KT, DL 10A Operating Instructions Manual
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DK S N P GR
➔ www.docuthek.com
Operating instructions
Pressure switches for air DL..A, DL..K
© 2016 Elster GmbH · Edition 07.16
Cert. version 03.94
Translation from the German
Contents
Contents
Pressure switches for air DL..A, DL..K......
Contents ..............................
Safety.................................
Checking the usage .....................
Type code .............................2
Part designations ........................ 2
Type label.............................. 2
Installation ............................
Positive pressure measurement .............3
Negative pressure measurement . . . . . . . . . . . . 4
Differential pressure measurement ...........4
Wiring ................................4
Adjustment ............................5
Function check.........................5
Accessories ...........................5
Z-angle bracket .........................5
U-angle bracket .........................6
Standard coupler plug ....................6
Motor flange adapter . . . . . . . . . . . . . . . . . . . . . 6
Tube set ...............................6
Pilot lamp set, red or blue .................6
LED set, red/green....................... 7
External adjustment ......................7
Technical data .........................7
Designed lifetime ........................ 7
Logistics ..............................8
Certification ...........................8
Declaration of conformity ..................8
Contact ...............................8
Safety
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the operator. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• , , , 3 ... = Action
▷ = Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-compliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Changes to edition 0.6
The following chapters have been changed:
– Accessories
GB
GB-1
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Checking the usage
DL ,5 – 3A, DL 3K, DL 5 – 50A, DL 5 – 50K
For monitoring positive, negative or differential air or
flue gas pressures.
This function is only guaranteed when used within
the specified limits– see page7 (Technical data).
Any other use is considered as non-compliant.
Type code
Code Description
DL Pressure switch for air
,5 – 50 Max. setting in mbar
K
A
GB
T T-product
-3
-4
-5
-6
-9
K
T
T
N
A External adjustment
W Z-angle bracket
Part designations
Upper housing section with cover
Lower housing section
3 Hand wheel
4 M16 cable gland
Type label
With tube connection and hand wheel
Additionally with Rp¼connection
(optional: Rp
Electrical connection
via screw terminals
via screw terminals, IP 65
4-pin plug, without socket
4-pin plug, with socket
4-pin plug, with socket, IP 65
Red/green pilot LED for 24 V DC/AC
Blue pilot lamp for 230 V AC
Red/green pilot LED for 230 V AC
Blue pilot lamp for 120 V AC
22
3
4
1
D-49018 Osnabrück, Germany
DL
CE – 0085AP0466
2
3
1
Installation
CAUTION
Please observe the following to ensure that the DL
is not damaged during installation and operation:
– Use approved sealing material only.
– Note the max. medium and ambient tempera-
tures, see page7 (Technical data).
– Condensation must not be allowed to get into
the housing (if possible, install pipework with an
ascending gradient). Otherwise, there is a risk of
icing of condensation at subzero temperatures,
1
/8)
the switching point shifting or corrosion in the
device which can lead to malfunctions.
– Protect the connections against dirt or moisture
in the medium to be measured or the surrounding air. If necessary, install a filter.
– In case of highly fluctuating pressures, install a
damping nozzle/restrictor orifice.
– When installing outdoors, place the DL in a
roofed area and protect from direct sunlight
(even IP65 version). To avoid condensation,
the cover with pressure equalization element
can be used on some types.
– In the case of an uneven mounting surface, se-
cure the pressure switch to the mounting plate
or air duct with only two screws on the same
side in order to avoid subjecting the pressure
switch to mechanical stress.
– When using silicone tubes, only use silicone
tubes which have been sufficiently cured. Vapours containing silicone can adversely affect
the functioning of electrical contacts.
– In the case of high humidity or aggressive gas
components, we recommend using a pressure
switch with gold contact due to its higher resistance to corrosion. Closed-circuit current monitoring is recommended under difficult operating
conditions.
▷
The DL must not be in contact with masonry.
Minimum clearance 20mm.
▷ Ensure that there is sufficient installation space.
▷ Ensure unobstructed view of the hand wheel.
▷
Installation in the vertical or horizontal position, or
upside down, preferably with vertical diaphragm.
If installed in a vertical position, the switching
pointpS will correspond to the scale valueSK.
Max. inlet pressure = withstand pressure, mains voltage, ambient temperature, enclosure: see type label.
GB-2
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▷
50 (1.97")
30 (1.18")
20
(0.79")
25 (0.98")
45 (1.77")
16
39 (1.53")
5,2
(0.2")
11,3 (0.44")
7 (0.27")
7,5 (0.3")
10
(0.4")
40 (1.6")
59 (2.3")
ø 5,5 (0.22")
ø 6 (0.22")
ø 4,2 (0.17")
10 (0.39")
1 (0.04")
1 = Rp 1/4 (+),
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
(4 = Rp
1
/8 (-),
1
/8" NPT (-))
1
(4)
2
3
(1/4" NPT (+))
1 = Rp 1/4 (+),
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
(4 = Rp
1
/8 (-),
1
/8" NPT (-))
1 = Rp
1
/4 (+),
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
(4 = Rp
1
/8 (-),
1
/8" NPT (-))
1
(4)
2
3
1
Test
2
3(4)
(1/4" NPT (+))
(
1
/4" NPT (+))
1 = Rp 1/4 (+),
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
(4 = Rp
1
/8 (-),
1
/8" NPT (-))
1 = Rp
1
/4 (+),
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
(4 = Rp
1
/8 (-),
1
/8" NPT (-))
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
1
(4)
2
3
1
2
3
Test
2
3(4)
(1/4" NPT (+))
(
1
/4" NPT (+))
If installed in another position, the switching
pointpS will change and no longer correspond
to the set scale valueSK. Switching pointpS
must be checked.
SK + 0.18 mbar
[+ 0.071 "WC]
SK - 0.18 mbar
[- 0.071 "WC]
DL 1,5A
DL 3K,
DL 3A
DL 5 – 150A,
DL 5 – 150K
▷ Installation using self-tapping screws for 1mm-
thick sheets:
DL..A, DL 3K: Ø 3.5 x 8 mm or Ø 4 x 8 mm.
DL 5 – 150K: Ø3.5 x 16 mm.
Fit the DL.
DL 1,5A
DL 3A
DL 3K
e.g. SK = -0.5:
ps = -0.5 + 0.18
ps = -0.32 mbar
49,5 (1.9")
44,5 (1.7")
DL..A: Rp ¼
(DL..AT: ¼" NPT)
ø 6,1 (ø 0.24")
Connect the pressure line.
▷
DL..A: upon delivery, port 2 is closed off by a
rubber cap.
DL ,5A, DL 3A
1 = Rp 1/4 (+),
2
3
1
(4)
(1/4" NPT (+))
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
1
(4 = Rp
/8 (-),
1
/8" NPT (-))
▷ Positive pressure: port 1 or 2
▷ Negative pressure: port 3
▷ Special version DL 3A – 3Z: port 4
DL 5 – 50A
Test
2
1
3(4)
1
/4 (+),
1 = Rp
1
/4" NPT (+))
(
2 = ø 4,75 x 1 mm (+)
3 = ø 4,75 x 1 mm (-)
1
(4 = Rp
/8 (-),
1
/8" NPT (-))
▷ Positive pressure: port 1 or 2
▷
Negative pressure: port 3; after unscrewing
port3 also port4
DL 3K
GB
3,5
(0.14")
DL 5–150A
2,7
(0.11")
3,5
(0.14")
DL 5–150K
64 (2.5")
49,5 (1.9")
54,5 (2.1")
2,7
(0.11")
DL..A: Rp ¼
(DL..AT: ¼" NPT)
44,5 (1.7")
2,7
(0.11")
45 (1.8")
2 = ø 4,75 x 1 mm (+)
▷ Positive pressure: port 2
▷ Negative pressure: port 3
DL 5 – 50K
▷ Positive pressure: port 2
2
2
(5)
3 = ø 4,75 x 1 mm (-)
3
2 = ø 4,75 x 1 mm (+)
3
3 = ø 4,75 x 1 mm (-)
(5 = ø 4,75 x 1 mm (+))
▷ Negative pressure: port 3
▷ Optional test point for positive pressure: port5
Positive pressure measurement
▷ 1 or 2 = positive pressure port(+).
▷ If port2 is used, close off port1.
3 or 4 = remains open to ventilate the upper
▷
diaphragm chamber.
GB-3
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