HOMA A Series - Manual (Page 5)

A Series
Installation, Operation & Maintenance Manual
Place the guide rails (supplied by others), cut to
length into the rings of the base. The rails will be
secured at the top of the pump station with the
upper guide bar bracket and extend down to the
sump floor.
Install the upper guide bar bracket to maintain
vertical orientation of the guide rails.
For stations exceeding 10 feet in depth
intermediate guide bar brackets are
recommended. One bracket is recommended for
each additional 10 feet of station depth.
Check that the guide system is properly installed
in the vertical orientation by using levels and a
plumb line. Fully tighten all anchors and
mounting bolts.
Connect the station riser piping to the outlet
flange of the base.
Before lowering the pump, verify the direction of
impeller rotation (refer to technical details section
for procedure).
Make sure to use lifting equipment that has
adequate capacity for the pump that will be
handled. Before installing pump, check to be
certain the profile seal (rubber ring) is properly
positioned in the guide claw flange. Then
position pump so the guides on the discharge
flange engage the rails. Slowly lower the pump
along the guide rail. Once the pump reaches its
bottom location it will automatically connect to
the base.
It is recommended that the stationary base elbow
be visible before lowering the unit. If this is not
possible, ensure all debris is removed from wet
well.
Important: Do not install more than one (1) check
valve into any piping system or problems will
occur.
Minimum Submergence
For optimal cooling, motor should be completely
submerged at all times. In pump-down systems,
level should not fall below one discharge
diameter above the top of the volute. For
continuous operation with a VFD, level should
not be maintained below the top of the motor for
sustained periods. For specific inquiries, please
contact factory for assistance.
INSTALLATION OF PUMPS WITH RING
STANDS:
The ring stand design allows for a free standing,
simple economical installation or to be
transportable from one installation to another.
It is intended to operate completely or partially
submerged in the pumping liquid.
Install the ring stand to the underside of the
volute with the supplied fasteners provided.
Apply thread locking compound such as blue
#242 and tighten the bolts using the torque table
indicated in the table. Do not over tighten!
Install suitable lifting device of an adequate
length to ensure proper lowering and raising
capabilities. Lower the pump into the area where
it is required. Properly position power cable and
chain so they stay above pump and cannot enter
the pump suction.
INSTALLATION OF PUMPS FOR DRY
PIT APPLICATIONS:
Foundation and Piping Requirements:
General
The following recommendations are basic
guidelines which are intended to outline basic
requirements in the design of the dry pit station.
It is essential that a licensed professional
engineer be retained by the owner to design the
station and all support structures.
Foundations
Foundations may consist of any structure heavy
enough to provide permanent rigid support for
the pump and inlet elbow stand. HI standards
demand at least 5 times the weight of the pump.
Concrete foundations built up from the solid
ground are the most commonly used. The
concrete floor shall be level. The space required
by the inlet stand and the location of the
foundation anchor bolts are shown on the outline
dimension drawing. Foundation bolts are to be
embedded in the concrete.
Pg. 5