E-one Extreme Series, Инструкции по установке и информация о гарантии

Страница: 8 / 20

8
Figure 5
GRINDER PUMP STAND
a flowable fill (i.e., low slump
concrete). This is particularly
attractive when installing
grinder pump stations in
augured holes where tight
clearances make it difficult to
assure proper backfilling and
compaction with dry materials.
Flowable fills should not be
dropped with more than four
feet between the discharge
nozzle and the bottom of the
hole since this can cause
separation of the constituent
materials.
7. VENTING: The unit must
be properly vented to assure
correct operation of the pump.
The units are supplied with
a 2” vent opening in the cover
assembly. Failure to properly
vent the tank will result in faulty
operation and will void the
warranty.
If the water level outside
of the station is expected to
rise above the surrounding
grade (flooding), a cover vent
system cannot be used. If
flood conditions are expected,
an underground (lateral) vent
system and solid cover must be
used. Consult the factory if
flood conditions are possible
where the station will be
installed.
8. ELECTRICAL
CONNECTION: (Supply panel
to E/One alarm panel)
Before proceeding, verify that
the service voltage is the same
as the motor voltage shown
on the name plate. An alarm
device is to be installed in a
conspicuous location where it
can be readily seen. An alarm
device is required on every
installation. There shall be no
exceptions.
Wiring of supply panel and
alarm panel shall be per
Figures 2a–2d, alarm panel
wiring diagrams provided with
the panel and local codes. A
dedicated 30 amp breaker is
required before a 240V duplex
alarm panel, and a dedicated
40 amp breaker is required
before a 120V duplex alarm
panel.
9. ELECTRICAL
CONNECTION: (Pump to
Panel) (Fig. 4)
The grinder
pump station is provided with a
cable for connection between
the station and the alarm panel
(supply cable) for each grinder
pump. The supply cable, a six
conductor tray cable, meets
NEC requirements for direct
burial as long as a minimum of
24” burial depth is maintained.
Those portions of the cable
which have less than 24” of
cover must be contained in
suitable conduit. This includes
any vertical portion dropping
to a 24” depth at the station
and the length rising out of the
ground at the control panel
(conduit by others). NOTE:
Wiring must be installed per
national and local codes.
Conduit must enter panel from
bottom and be sealed per NEC
section 300.5 & 300.7.
9a. Installing E/One supply
cable:
1) Open the lid of the station
and locate the cable and the
feed-thru connector(s) on the
inside wall of the tank. For
each supply cable, loosen the
nut on the connector and pull
the supply cable out through
the connector until it hits the
crimped on stop feature on
the cable, approximately 36”
from the EQD. **IMPORTANT:
All but 36” of the cable must
be pulled out of the station,
and the Equalizer and EQD
should be secured in the hook
provided to ensure that the
pump functions properly. Do
not leave the excess cable in
the station.
2) Retighten the nut. This
connection must be tight or
ground water will enter the
station.
3) Feed the wire through the
length of conduit (contractor
provided), which will protect it
until it is below the 24” burial
depth.
4) Run the cable
underground, in a trench or
tunnel, to the location of the
E/One panel. Leave a 6” to 12”
loop of cable at each end to
allow for shifting and settling.
Connections made at the
panel are shown in the wiring