Flomatic Flo-Flex 745 Manual - Halaman 6

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Halaman Cetak
 
POSITION INDICATOR (Model 745PI)
The optional valve disc Position Indicator (PI) mechanical indicator is factory (see
Fig 4) installed but can also be installed in the field. The Position Indicator visually
indicates to what degree the valve disc is opened or closed. The device is
installed on the access cover and can be installed in the field by going through
the following steps:
1. Remove pipe line pressure and drain the valve.
2. Carefully, remove the top pipe plug (insuring that there is no water pressure in
the line) from the access cover.
3. Apply pipe joint compound to position indicator body (11) threads.
4. Insert the position indicator body (11) and thread in-place.
Item #
Qty.
Description
1
1
Sight Housing
Bronze
2
1
Spring
Stainless Steel
3
1
Rod
Stainless Steel
4
1
Nut
Stainless Steel
5
1
Spring Seat
Stainless Steel
6
2
O-Rings
EPDM
7
1
Sight Base
Bronze
8
1
Sight Body
Bronze
9
1
Bottom Bushing
Acetal
10
1
Rod Wiper
Molythane
11
1
Body Bushing
Bronze
12
1
Pin
Stainless Steel
13
1
Contact Ball
Acetal
WARNING: Make sure that the position indicator top portion after securely installed pointes in the valves
flow direction. This will ensure proper orientation and function of the position indicator assembly. Damage
to the device and valve disc will accrue if the position indicator is not correctly and exactly aligned with the valves
flow direction.
Limit Switch (Model 745LS)
Item
Qty.
Description
#
1
1
Position Indicator*
2
1
Lever
3
1
Limit Switch**
4
2
SHCS
5
4
Lock Washer
6
1
Jam Nut
7
1
Bracket
8
2
SHCS
*For Position Indicator details see Fig.4
**Honeywell Model LSH1A or equal
Electric Switch Replacement Parts: Contact Flomatic
distributor or MICRO SWITCH sales office.
Material
The limit switch option (Model 745LS) is factory
installed or field installed (see Fig 5a & 5b) on the
valve access cover and is used in conjunction
with the Position Indicator (PI). A standard limit
switch (Honeywell Model LSH1A or Equal) is
mounted on an epoxy coated steel bracket
for easy wiring, field adjustments and
Fig. 5a
servicing. The limit switch is SCADA
Side view
(Supervisory Control and Data Acquisition)
compatible for applications requiring open/close
indication.
Function: The limit switch when probably adjusted will give an electric
"closed" and/or "open" circuit when valve is open and/or in closed position.
NEMA Ratings: 1, 3, 4, 4X, 6, 6P, 12, 13
UL Ratings: 6 A, 120Vac or 250 Vac, DPST
Material
ASTM
Installation:
1. First, make sure that the valve is equipped with a Position Indicator (PI).
Various
--------
Stainless Steel
301
Attach limit switch bracket (7) with assembly to Position Indicator (PI).
Various
--------
2. Position the assembly so that the switch trips when the valve is closed.
Stainless Steel
18-8
Stainless Steel
18-8
3. Connect wiring to either the normally open or normally closed contact as
Stainless Steel
18-8
Hot Rolled Steel
A36
shown in the schematic diagram. Follow all local electrical codes.
Stainless Steel
18-8
Flomatic Corp, 15 Pruyn's Island, Glens Falls, New York 12801
Phone: 518-761-9797
Fig. 4 Position Indicator
Corporation or contact nearest MICRO SWITCH Authorized
®
Fax: 518-761-9798
www.flomatic.com
Fig. 5b
Top view
745PI-BF-LS-ASC Rev. B
October 12, 2018