18
Adjusting the Height of the Grinder Pump Station
TO INCREASE STATION HEIGHT 6 INCHES
1. Increasing station height can be done without cutting the station. Use the E/One Extender cover shroud
kit (ND0082G01) and follow the instructions that are included with the kit.
TO INCREASE STATION HEIGHT MORE THAN 6 INCHES or TO REDUCE THE STATION HEIGHT:
REMOVE EXISTING COVER ASSEMBLY
(Fig. 6)
If your existing station has a welded-on cover shroud you will need the
appropriate replacement cover kit (see Table 2, page 15).
1. Turn off all power to the grinder pump station.
2. Remove the tank lid and the electrical shroud.
3. Unplug the electrical quick disconnect (EQD) and remove the EQD
from the supply cable.
Note: DO NOT CUT CABLE
. Loosen liquid tight
cable connector and pull the supply cable out through the connector on
the side of tank.
4. Tape the pump breather cable to the vent pipe in the tank.
5. Remove the soil around the tank, exposing three of
the tank corrugations below grade. Use caution not to
damage buried cable.
6. Remove existing cover shroud.
6a. Welded-on shroud (standard) - Using a hand saw,
cut the tank in the valley between the two corrugations at
grade, discard existing welded-on shroud and attached
corrugations
(shroud is not to be reused)
.
Caution:
Be careful not to cut either the vent pipe or the pump
breather cable.
6b. Clamped-on shroud - Remove band clamp and
cover shroud.
REDUCING STATION HEIGHT
(Fig. 7)
7. Using a hand saw, cut the tank in the valley
between the two corrugations at grade.
8. Cut vent pipe 4 ¾” above the cut made on the
tank.
Proceed to step 16.
INCREASING STATION HEIGHT
(Fig. 8 and Fig. 9)
9. Remove the soil around the tank exposing it
18” deeper than the extension being installed. For
example, if you have a 2’ extension (not including the
coupler) you must dig down 3’6” minimum from
grade; if you have a 4’ extension (not including the
coupler) you must dig down 5’6” minimum from
grade. Use caution not to damage buried cable.
10. Measure from grade down 2’ (for a 2’
extension) or 4’ (for a 4’ extension) and mark
accessway. Using a hand saw, cut the tank in the
valley between the two corrugations that are closest
to your mark.
Note: Make sure the welded-on
shroud of the extension will be at grade level. Be
sure you are not cutting into the wet well and you
must have two corrugations below your cut, if there
are less than two corrugations, this extension kit can
not be used.
Caution:
Be careful not to cut either the vent pipe
or the pump breather cable.
Figure 6
Figure 7
Figure 8
Figure 9
