Gorman-Rupp Pumps PA4A60C-B-E30 575/3 1482736 and up - Manual (Page 17)

PA SERIES OM−06440
PAGE B − 9 INSTALLATION
OPERATING
RANGE
(See Table Below)
CABLE
TETHER
POINT
OFF
(Emptying)
ON
(Filling)
ON
(Emptying)
OFF
(Filling)
1.25" Pipe
(Not Furnished)
PUMP
CONTROL
BOX
1.0
(0.3)
APPROXIMATE FREE CORD LENGTH IN FT. (M)
0.5
(.15)
1.0
(0.3)
1.5
(.46)
2.0
(0.6)
2.5
(.76)
3.0
(0.9)
2.0
(0.6)
3.0
(0.9)
4.0
(1.2)
Figure 4. Float Switch Data
Submersible Transducer Installation
The Electronic Pressure Switch (EPS) autostart
system employs a submersible transducer level
sensor with 75 feet (22,9 m) of signal cable con-
nected to the EPS.
The transducer sensor converts pressure to an
electrical signal proportional to liquid level. This
electrical signal is distributed to the digital display
on the EPS through a scaling circuit which con-
verts the electrical signal to feet of water".
When installing the transducer sensor, note the fol-
lowing:
a. Handle the signal cable and transducer sen-
sor with care during installation. Carefully
lower the sensor into the wet well or sump; do
not drop it to the bottom. To avoid clogging,
suspend the sensor off the bottom.
b. Be sure to provide sufficient room in the wet
well or sump so that the sensor does not get
drawn into the suction line. To prevent this, a
flexible suction hose may be extended to lay
along the bottom of the wet well or sump. The
sensor can then be attached to the hose
above the point where it bends along the bot-
tom. See Figure 5 for a typical installation.
c. Allow slack in the signal cable so that the sen-
sor weight does not pull on the connection.
d. The wet well or sump must be vented to atmo-
sphere.
e. The EPS is scaled in feet of water column. If
the measured medium is other than 1.0 spe-
cific gravity, the reading on the EPS should be
divided by the specific gravity of the mea-
sured medium to obtain the actual level.
f. Thoroughly clean the sensor after each use
to prevent clogging.
Do not disassemble the transducer sensor
or loosen the compression nut at the signal
cable entry. This will void warranty. There
are no user-serviceable parts inside. Do
not nick or cut the jacket of the signal
cable; this will cause leakage and void
warranty. Connect the signal cable only to
the EPS terminals for this purpose and to
no other power source.