FCI FLT93B, Installation, Operation & Maintenance Manual

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FLT
®
Series FlexSwitch
TM
INSTALLATION
Fluid Components International LLC 9
Figure 2-5 Removing Ground Wire Securing Hardware from Enclosure
Cable and Conduit Entry Devices
The cable and conduit entry devices and blanking elements shall be of a certified flameproof type Ex db and Ex tb suitable for T ratings up to
106 °C, suitable for the conditions of use and correctly installed. With the use of conduit entries a sealing device shall be provided immedi-
ately on the entrance of the device.
All cable glands and conduit fittings, including conduit plugs, must meet or exceed the area approval where the unit is being installed.
Enclosure Grounding
To ensure an Ex-compliant installation, follow the below steps to ground the enclosure.
Warning: Ensure that all power is OFF before wiring any circuit.
Tools required :
• Wire Stripper for 10-12 AWG (3.3-5.3 mm
2
)
• Crimping Tool for 10-12 AWG (3.3-5.3 mm
2
), TE Connectivity CERTI-CRIMP Direct Action Hand Tool 49935 (or equivalent)
• M4 hex key/Allen wrench
1. Strip .250”-.281” [6.35-7.14 mm] insulation from ground wire, stranded or solid (12-10 AWG).
Note
: Avoid nicking or cutting wire strands when stripping the wire insulation.
2. Remove M4 socket cap screw, M4 split washer and ring lug from enclosure using M4 hex key (Allen wrench). The enclosure’s ground
wire hardware is installed at the factory. See Figure 2-5 below.
Connection
Maximum Distance for AWG
10 ft.
(3m)
50 ft
(15m)
100 ft.
(31m)
250 ft.
(76m)
500 ft.
(152m)
1000 ft.
(305m)
AC/DC Power 22 22 22 20 18 16
Relay (6A) 28 22 20 16 12 10
Flow Element Wires* 22 20 20 18 18 18
* Requires a shielded cable with the shield wire connected to the terminal board only.
Table 2-1 Maximum AWG Number
M4 HEX KEY
RING LUG,
10-12 AWG
M4 SPLIT
LOCK WASHER
ENCLOSURE
M4 SOCKET
CAP SCREW
C01332-1-1