Graco E-Flo, Installation Manual

Page: 14 / 28

Power Supply Requirements
14 311592Z
Pressure Transducer Grounding
Requirements
The pressure transducer cable (25a) shield and drain
wire is grounded through metal-to-metal contact with the
transducer conductive strain relief (35). See F
IG
. 5.
Ensure that the conductive strain relief (35) is screwed
tightly into the housing, to ensure electrical continuity to
the pump housing.
Tighten the nut (N) on the conductive strain relief (35)
securely to ensure that the shield and drain wire (G) has
firm metal-to-metal contact between the nut and bushing
(B). Ensure that the ferrite (76) is attached around the
transducer leadwires, and is located inside the circuit
board compartment.
IS Field Wiring Grounding
Requirements
The IS field wire is grounded through the grounding
screw in the junction box. See F
IG
. 6.
Ensure that the conductive strain relief (74a) is screwed
tightly into the housing. Units with a sensor circuit
must
use the conductive strain relief to ensure proper shield-
ing of the IS field wire.
Thread the IS field wire through the conductive strain
relief (74a) and connect it to J2 and J3 on the circuit
board. See F
IG
. 6 and the System Wiring Schematics ,
page 11.
See F
IG
. 6. Tighten the nut (N) on the conductive strain
relief (74a) securely. Install the ferrite (77) on the field
wire (F), not more than 2 in. (51 mm) from the bottom of
the conductive strain relief (74a). Install ground wire (G)
to grounding screw in junction box.
F
IG
. 5. Transducer Cable Grounding
,66(1625
&,5&8,7
%2$5'
-
7'&
1$085
6(1625
-
%51
%/8
5('
*51
:+7
%/.
35(6685(
75$16'8&(5
-
-
)(55,7(
*
326,7,21
6(1625
-
%51
%/8
ti16890b
76
25a
B
G
N
44
Tighten nut (N) securely to
ensure that the shield and
drain wire (G) has firm
metal-to-metal contact
between the nut and
bushing (B).
3
3
35
ti17644a
Land shield drain and foil to conductive strain relief.
5
F
IG
. 6. IS Circuit Field Wire
ti16891b
F
N
77
B
74a
Not more than
2 in. (51 mm)
G