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.
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 warrantee 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. 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.
F G
E
C
D
1
2
3
4
5
6
7
8
9
10
8
9
10
4
6
7
3
STANDARD V4
CENELEC V4
PROCESS CONNECTION
1-1/2 MALE NPT
3-11/32
[84.93]
2-23/32
[69.06]
1-5/8 [41.28]
CLEARANCE FOR
COVER REMOVAL
1
[25.40]
A
B
Ref #
1
2
3
4
5
6
7
8
9
10
Standard V4
N/A
N/A
Explosion-proof housing with 3/4˝
female NPT conduit connection.
16 AWG, 6˝ (152 mm) long.
Internal
Magnet arm and switch assembly.
Switch body of SAE 72 Brass or
316 SS.
Five layer vane, 316 Stainless
Steel, Designed for 1/2˝ to 8˝
pipes. Usable in larger pipe sizes.
Magnet keeper of 430 Stainless
Steel.
Vane block of 316 Stainless Steel.
ATEX/IECEx unit
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 Stainless Steel.
Five layer vane, 316 Stainless
Steel, Designed for 1/2˝ to 8˝ pipes.
Usable in larger pipe sizes.
Magnet keeper of 430 Stainless
Steel.
Vane block of 316 Stainless Steel.
Dim
A
B
C
D
E
F
G
V4 in(mm)
8-3/16 (207.96)
6 (152.40)
4-11/16 (119.06)
1 (25.40)
1-5/16 (33.34)
7/8 (22.23)
11/16 (17.46)
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 unit
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
SIDE VIEW DETAIL
CLAMP
SCREW
LOCKWASHER
CONDUCTOR
Standard V4
TERMINAL CONNECTIONS SPDT
TERMINAL CONNECTIONS DPDT
