Installation - Dwyer Instruments V4 Flotect Serie Betriebsanleitung

INSTALLATION

1. Remove packing material from switch body-cap and remove tape from magnet
keeper. Adjust vane length if necessary on multi-layer vanes only (see flow rate
charts on next page). Install switch in thredolet previously welded to line. In some
cases, it may be necessary to install the switch in a flange or tee (see installation
drawings on next page). Note: extreme care must be exercised in welding the fitting
to the line so that it is plumb and level.
Adjustment of Multi-layer Vane
Remove only those layers which are too long. Leave the smaller layers to reinforce
the vane. The longest vane fits 6˝ (150 mm) or larger pipe, the second longest vane
fits 4˝ (100mm) pipe, etc. Actuation-Deactuation rates are shown in the charts on
the next page. To remove vane layers, proceed as follows:
a. Remove the two screws and lockwashers holding the layers together. Do not
lose these special corrosion resistant type 316 stainless steel screws and
lockwashers.
b. Remove the unwanted layers.
c. Resecure the vane with the original two screws and lockwashers.
c1. If using a product with the 316 SS vane block option, a second pair of
screws are included in the package. Resecure the vane with the correct
screws per the below:
# of Vanes Used Use Screw Length
1,2 7/16˝ (included in box)
3, 4, 5 1/2˝ (pre-installed)
d. With a hammer, lightly peen the ends of the screws so that they can't back out.
e. If you lose the screws or lockwashers, don't replace with other parts which may
corrode and break. That will void the warranty and might cause severe
damage to equipment located downstream of the switch.
Note: Custom vane units have been calibrated at factory to meet requirements. Do
not change.
2. The arrow on the side of the switch must point in the direction of flow.
3. Wiring: UL and CSA units only: thread connecting wires through conduit and
connect. Wire in accordance with local electrical codes.
Black - Common
Blue - N.O.
Red - N.C.
Note: Double pole, double throw switches have dual black, blue and red leads.
These are connected in the same manner as single pole, double throw switches,
as described above.
ATEX and IECEx Installation Instructions:
Cable Connection
The cable entry device shall be certified in type of explosion protection
flameproof enclosure "d", suitable for conditions of use and correctly installed.
Cable entry may exceed 70°C. Conductors and cable gland rated ≥95°C shall
be used.
Conduit Connection
An Ex d certified sealing device such as a conduit seal with setting compound
shall be provided immediately to the entrance of the valve housing. Cable entry
may exceed 70°C. Conductors and cable gland rated ≥95°C shall be used.
Note: The switch is deactivated and contacts are in normal condition when there is
no flow in the line.
4. Make sure conduit or cable are properly sealed. Electrical components must be
kept free of moisture, including condensation, at all times.
CAUTION To prevent ignition of hazardous atmosphere, disconnect
the device from the supply circuit before opening. After de-
energizing, delay 10 minutes before opening. Keep assembly
tightly closed when in operation.
Note: ATEX and IECEX units only: The temperature class is determined by the
maximum ambient and or process temperature. Units are intended to be used
in ambient of -20°C≤Tamb≤73°C. Units may be used in process temperatures up to
133°C providing the enclosure and switch body temperature do not exceed 73°C.
The standard Temperature Class is T6 Process Temp ≤73°C.
3-11/32
[84.93]
2-23/32
[69.06]
1-5/8 [41.28]
CLEARANCE FOR
COVER REMOVAL
3
B
A
C
D
1
[25.40]
F G
Standard V4
5. For units supplied with both internal ground and external bonding terminals, the
ground screw inside the housing must be used to ground the control. The external
bonding screw is for supplementary bonding when allowed or required by local
code. When external bonding conductor is required, conductor must be wrapped a
minimum of 180° about the external bonding screw. See below.
Front view detail
Terminal connections SPDT
Dim V4 in [mm]
A 8-3/16 [207.96]
B 6 [152.40]
C 4-11/16 [119.06]
D 1 [25.40]
E 1-5/16 [33.34]
F 7/8 [22.23]
G 11/16 [17.46]
Ref # Standard V4
1 N/A
2 N/A
3 Explosion-proof housing with 3/4˝
female NPT conduit connection
4 16 AWG, 6˝ (152 mm) long
5 Internal
6 Magnet arm and switch assembly
7 Switch body of SAE 72 Brass or
316 SS
8 Five layer vane, 316 SS, designed
for 1/2˝ to 8˝ pipes. Usable in larger
pipe sizes
9 Magnet keeper of 430 SS
10 Vane block of 316 SS
1
2
3
4
7
6
PROCESS CONNECTION
1-1/2 MALE NPT
ATEX/IECEx
LOCKWASHER
CONDUCTOR
SCREW
CLAMP
Side view detail
Terminal connections DPDT
V4-2 in [mm]
8 [203.20]
6-3/4 [171.45]
3-15/16 [100.01]
1-3/4 [44.45]
9/16 [14.30]
11/16 [17.63]
1/2 [12.70]
ATEX/IECEx
Cover lock.
External ground
Explosion-proof housing with 3/4˝
female NPT conduit connection
terminal block
Internal ground
Magnet arm and switch assembly
Switch body of SAE 72 Brass or
316 SS
Five layer vane, 316 SS, designed
for 1/2˝ to 8˝ pipes. Usable in larger
pipe sizes
Magnet keeper of 430 SS
Vane block of 316 SS
4
5
7
6
9
10
8