Operation Manual

5-4
IM 1F5B2-01E
■ Follow the procedure below to attach a flameproof packing adapter (optional) (see Figure 5.3-2).
<1> Turn the lock screw clockwise to remove the cover on the terminal box.
<2> Measure the outer diameters of the cable being used, in two different directions, to
an accuracy of 0.1 mm.
<3> Determine the average of the outer diameters in two directions. Choose the
packing whose inner diameter is closest to the average from the three supplied
packings (see Table 5.3).
<4> Screw the adapter’s main assembly into the wiring port of ULTRA YEWFLO and
fasten the assembly with the locknut. (Be sure to insert the O-ring.)
<5> Insert the pressure nut, union coupling, plate packing, washer, rubber packing and
washer, in this order, into the cable. Connect each wire of the cable to their
respective terminals through the main assembly of the flameproof packing adapter.
<6> Fasten the pressure nut to fix the adapter. For a proper tightening torque, apply
another two or two-and-a-half turns to the pressure nut at a point where the rubber
packing begins to compress.
<7> Fasten the stop screw on the pressure nut.
<8> Reinstall the cover on the terminal box. Turn the lock screw counterclockwise to
fasten the cover.
Lock screw
Cable
Hexagon-socket
stop screw
Pressure
nut
Plate
packing
Washers
Union coupling
Rubber packing
Locknut
O-ring
Figure 5.3-2 Attachment of Flameproof Packing Adapter
Integral type
Remote type
detector
Remote type
detector