Yokogawa digitalYEWFLO (DY) - Manual (Page 100)

<11. MAINTENANCE>
11-2
IM 01F06A00-01EN
11.1 Changing the Converter and the Terminal Box Orientation
The converter and the terminal box can be changed in four directions with respect to the fl ow direction.
Integral Type Vortex Flowmeter Remote Type Vortex Detector
Amplifier Unit
Indicator
Converter Cover
* *
Bracket
Mounting
Bolt (two)
Body
Bracket
Vortex Shedder
Assembly
Hexagon
Mounting
Bolt (four)
Wire
Terminal Box Cover
Terminal Box
Bracket
Hexagon Mounting
Bolt (four)
Bracket Mounting
Bolt (two)
Wire
Vortex Shedder
Assembly
Body
Wire Color Terminal
Red
White
A
B
Wire Color Terminal
Red
White
A
B
Locking
Screw
(WAF: 1.5mm)
Shielded Cover
Locking
Screw
(WAF: 1.5mm)
Locking Screw
For the explosion
protected type
Flameproof (TIIS,
ATEX, IECEx)
Intrinsically safe
(SAA)
Locking Screw
For the explosion
protected type
Flameproof (TIIS,
ATEX, IECEx)
Intrinsically safe
(SAA)
WAF:
3mm WAF:
3mm
F1101.ai
<1> Remove the converter cover. In case of the explosion
proof type cover removal, loosen the Locking Screw
(WAF: 3mm).
<2> For indicator and amplifier unit removal, refer to Section
11.2 “Indicator Removal and Rotation” and Section 11.3
“Amplifier Unit Removal”.
<3> Disconnect the vortex shedder assembly lead-wires from
the converter. In case of the explosion proof type, loosen
the Locking Screw (WAF: 1.5mm).
<4> Remove the bracket mounting bolts and remove the
converter and bracket from the flowmeter body. The
bracket applies to the 1 (25mm) to 4 (100mm) inch
flowmeters.
<5> Remove the hexagon mounting bolts in case of 90-degree
turn.
<6> Turn the converter to the desired orientation. When
reassembling the converter, reverse the above procedure.
<7> After changing the direction, make sure the impedance
between the earth terminal and the metal part of body,
vortex shedder assembly or bracket is 100ŸRUOHVV
<1> Remove the terminal box cover. In case of the explosion
proof type cover removal, loosen the Locking Screw
(WAF: 3mm).
<2> Disconnect the vortex shedder assembly lead-wires from
the terminal box. In case of the explosion proof type,
loosen the Locking Screw (WAF: 1.5mm).
<3> Remove the bracket mounting bolts and remove the
terminal box and bracket from the flowmeter body.
The bracket applies to the 1 (25mm) to 4 (100mm) inch
flowmeters.
<4> Remove the hexagon mounting bolts in case of 90-degree
turn.
<5> Turn the terminal box to the desired orientation. When
reassembling the terminal box, reverse the above
procedure.
<6> After changing the direction, make sure the impedance
between the earth terminal and the metal part of body,
vortex shedder assembly or bracket is 100ŸRUOHVV