F10-1D22-BKK Datasheet, PDF (9/28 Pages) Magnetrol International, Inc. – Flow Switches

Screw
Screw
Set
Screw
Figure 10
47-602 F10 and F50 Flow Switches
1. On high temperature applications, above +250° F
(+121° C), high temperature wire should be used between
the control and first junction box located in a cooler area.
2. Remove switch housing to gain access to switch
mechanism.
NOTE: For supply connections in installations with ambient tempera-
ture up to +70° C, use wire with a minimum rating of +75° C
as required by the process conditions,. Installations with
ambient temperatures up to +80° C require wire with a mini-
mum rating of +85° C as required by the process conditions.
Use a minimum of 14 AWG wire for power and ground field
wires.
3. Pull in supply wires (conductors), wrap them around
enclosing tube beneath the baffle plate, and connect to
proper terminals. Ensure excess wire does not interfere
with actuation of the switch, and that adequate clearance
exists for replacement of switch housing cover.
4. Connect power supply to control and test switch actuation
by varying flow rate within pipeline.
NOTE: If switch mechanism fails to function properly, check vertical
alignment of control housing. Refer to installation bulletin of
mechanism furnished, as listed in the switch mechanism chart
on page 21.
5. Replace switch housing cover.
NOTE: NEMA 4X/7/9 housings must be sealed at the conduit outlet
with suitable compound to prevent entrance of air. Check
cover to base fit to be certain gasketed joint is tight. A positive
seal is necessary to prevent infiltration of moisture laden air or
corrosive gases into switch housing.
6. Place flow switch into service.
2.4.1 Model F10 Switch Actuation Adjustment
The F10 flow switch is factory set to actuate at the mini-
mum flow rate. Actuation flow rate can be increased while
the unit is in service, under pressure, by removing the ¹â„4"
NPT plug to gain access to the O-ring sealed adjusting
screw. Each clockwise turn of the adjusting screw increases
the actuating flow rate approximately 10% of the range of
the specific flow vane being used. See pages 16–18 for flow
rate adjustability.
Caution: The safety retainer above the adjusting screw is placed
there to help prevent the accidental removal of the adjust-
ing screw. Do not defeat its purpose by forcefully backing
out the adjustment screw. Be sure to replace the ¹â„4" NPT
plug and tighten it firmly.
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