HOMA TP Series User Manual

TP Series

Installation, Operation

& Maintenance Manual

Project: _________________________
Installation: ___________________

Pump Model: ____________ Serial Number: ____________

PN# TPIOM REV. 6/12

HOMA Pump Technology, Inc.

390 Birmingham Boulevard  Ansonia, CT 06401

TP Series

GENERAL INSTRUCTIONS:

This manual is intended to provide basic
installation and start-up guidance. It is to be read
and thoroughly studied prior to attempting to install
or operate any of the equipment supplied.

Equipment damage, which occurs by not following
these instructions will void the warranty.

SAFETY PRECAUTIONS:

Only trained, qualified personnel shall be utilized
for installation and start-up.

The following is a general list of safety precautions
that should be followed when installing, starting-up
or servicing the pump.

The pump station owner or operator is
ultimately responsible for ensuring that all
equipment is installed, started up and operated
in a safe manner.

• Do not work alone.

• Double check to make sure that all lifting

equipment is in good working order and that it
has adequate lifting capacity for the weight that
it will handle.

• Wear safety helmet, goggles and protective
shoes, or appropriate safety materials required.

• Before working on the pump make sure that
the power is disconnected and cannot be
energized by others. Lockout and tag the
control panel circuit breaker.

• Do not stand under suspended loads!

• Never enter or work within a wet well without

first checking to make sure sufficient oxygen is
present and that there are no explosive or
poisonous gases present.

• All personnel, who work with sewage pumping
equipment and systems shall be vaccinated
against diseases that can occur. If there are
any questions or doubts in this area it is
strongly suggested that the local health agency
be contacted.

• For Hazardous Area Classifications, only use
pumps with suitable Explosion Proof Rating.

Installation, Operation & Maintenance Manual

EQUIPMENT INVENTORY AND
INSPECTION:

Upon arrival of pump shipment carefully unpack all
components and compare with shipping and
purchase order documents to ensure that the order
is complete. Also inspect equipment for any
damage that might have occurred in shipment. If

any problems are detected contact an authorized
HOMA Pump Technology Representative
immediately.

TRANSPORTATION AND STORAGE
PROCEDURE:

Always lift the pump by its lifting bail or eye bolt.
Never lift the pump by its power cable!
Pumps should be stored in an upright position,
taking extreme care to protect the power cable and
control cables from crushing, nicks or tears which
would permit water intrusion.
Power cable ends must be protected from
immersion in water as well as moisture intrusion.
The cable will wick water into the pump if it is not
protected properly. Power cable leads should be
covered with shrink tubing or suitable sealing
material during storage.

Short Term Storage: Short term storage is
defined as any time less than six months. We
recommend that pump and accessories be
stored in its original shipping container in a
dry, temperature controlled area. If climate
controlled storage is not possible, all exposed parts
should be inspected before storage and all
surfaces that have the paint scratched, damaged
or worn should be re-coated with air dry enamel
paint. The pump should be stored in an upright
position.

Long Term Storage: Any storage time
exceeding six months is considered long term.
In addition to the safeguards specified above, the
impeller should be rotated once a month to prevent
the mechanical seals from being damaged, and the
pump should be inspected. The seal chamber oil
should be drained and replaced prior to
commissioning. The pump should be stored in an
upright position.

Pg. 2

TP Series

ELECTRICAL INSTALLATION:

GENERAL GUIDELINES

All electrical work shall be carried out under the
supervision of an authorized, licensed electrician.

The present state adopted edition of the
National Electrical Code as well as all local
codes and regulations shall be complied with.

VERIFICATION OF POWER SUPPLY

Prior to making any electrical connections or
applying power to the pump, compare the power
supply available at the pump station to the data on
the unit's nameplate. Confirm that both voltage

and phase match between pump and control
panel. The voltage supplied at the pump shall be

+5 / -10% of the nameplate value, frequency shall
be + / - 1% of the nameplate value, the voltage
phase balance shall be within 1% and the
maximum corrected power factor shall be 1.0.

POWER LEAD WIRING

HOMA TP Series pumps may be provided with 1 or
more cables, depending on motor horsepower and
operating voltage. Power leads L1, L2, & L3 may
be provided as single conductor, or as twin
conductor. Twin conductor configuration may use
leads from separate cables, or may use two
conductors within one cable. Please refer to wiring
diagram enclosed for specific connection details.

The pump must be connected electrically through a
motor starter with proper circuit breaker protection
in order to validate warranty. Do not splice cables.

THERMAL SWITCH WIRING :

Pumps are equipped with thermal switches
embedded in the stator windings which are
normally closed, automatically resetting switches.
Switches will open when the internal temperature
rises above the design temperature, and will close
when the temperature returns to normal. Some
non explosion proof, single phase TP pumps have
internally connected thermals which shut the pump
down in the event of over temperature condition
and do not require any external connection.
Explosion proof pumps and pumps with 7 lead
cable have thermal switches which must be wired
into the over temperature circuit of the control
panel.

Installation, Operation & Maintenance Manual

Note: All sizes of Class 1, Div. 1 pumps for
hazardous service will have externally wired
thermal switches. Thermal switch leads must
be connected to a current regulated control
circuit in accordance with NEC.

Thermal switch leads must be connected to
validate warranty.

Identify thermal switch leads marked T1 and T3 in
the power or control cable. The resistance across
these leads will be .5 Ohm. These leads must be
connected to the thermal overload relay such as
the HOMA Go switch seal fail / thermal relay
(option) or other current regulated power supply /
controller.

SEAL PROBE WIRING

The mechanical seal leak detector probe utilized in
the pump is a conductive probe which is normally
open. The intrusion of water into the seal chamber
completes the electrical circuit. Control panel
provisions will sense this circuit closure, and will
provide indication or alarm functions depending on
the panel design. Either single or dual wire
systems may be provided. Single wire systems
utilize one energizing conductor, and the pump
casing and neutral lead as the ground or return
portion of the circuit. The dual wire systems utilize
two separate conductors for each leg of the circuit.
With either system, the seal probe leads must be
wired into a control circuit provided in the control
panel. This control circuit must energize the probe
with a regulated power source, and sense the
closed circuit in event of water intrusion. Indication
and alarm functions must also be provided in the
control circuit. Please see control panel wiring
diagram (by others) for seal probe connection
points. IMPORTANT: For Hazardous Area

Classification Pumps, leak detector circuit must be
in conformance with applicable NEC codes and
regulations.

START / RUN CAPACITORS AND RELAYS:

All single phase motors require start and/or run
capacitors to operate. Refer to the enclosed wiring
diagrams. Capacitors and relays must be sized for
the specific motor. Capacitors are sized based on
ideal conditions. The run capacitor may need to be
resized to match the available field voltage. Each
cap kit shipped is supplied with a wiring diagram
and start up procedure.

Pg. 3

TP Series

MECHANICAL INSTALLATION:

PUMPS WITH AUTOCOUPLING
SYSTEMS

The HOMA Auto-Coupling is a quick removal
system used in keeping personnel from having to
enter the wet well. The pump mounts on a
stationary base and operates completely or
partially submerged (minimum 8” over volute) in
the pumping media.

The HOMA Auto-Coupling kit consists of a base
elbow, guide claw flange, and upper guide rail
bracket. The kit also includes a profile seal and
base anchor bolts.

TP Series pumps with horizontal threaded
discharge, attach the guide claw flange to the
pump discharge flange as follows:

1. Inspect threaded assemblies for damage.

2. Clean threaded portions of pump discharge
flange and guide claw flange and locate set
screw location.

3. Install profile seal (if not already installed at
factory) into the guide claw with large diameter
fitted into groove inside of claw.

4. Apply pipe sealant to the threads of the
discharge.

When installing the pump onto a larger auto­coupling an increaser bushing will be included with
the pump. Use a thread locking compound such
as blue #242. Apply thread locking compound to
the discharge threads. Thread the bushing onto
the discharge and tighten.

5. Thread guide claw flange on to pump discharge
fully. DISCHARGE THREADS ARE NOT NPT.
DO NOT OVER TIGHTEN.

6. Tighten guide claw flange until the claw is in
upright (horizontal) position.

7. Apply thread locker to the set screw included
with the guide claw and tighten set screw.

For flanged discharge pumps, attach the guide
claw with the fasteners and gasket provided.
Flanges are raised face type, improper tightening
will damage the flanges. Tighten the bolts in a
crosswise fashion evenly and in steps. Do not
tighten one side and then the other or the flanges
will break.

Do not over tighten the bolts or the flanges will
break.

For all pumps, properly locate the base and, with
suitably sized anchor bolts, fasten it to the floor of
the pump station. Make sure when locating and
securing the anchor bolts that the base will align
properly with the access cover at the top elevation
of the station. Level the base before completely
tightening the anchor bolts. If base is not level,
proper sealing of the pump to base may not occur!

Place the guide rail pipes (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 to extend down to the
sump floor.

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.

Install the upper guide bar bracket to maintain
vertical orientation of the guide rails. Do not
tighten mounting bolts completely at this point.
Check that the guide system is properly installed in
the vertical orientation by using levels and a plumb
line. Then tighten upper guide anchor bolts.
Connect the station riser piping to the outlet flange
of the base.

INSTALLATION OF PUMPS WITH
RING STANDS:

The ring stand design allows for simple,
economical installation and can be transported
from one installation to another.

For pump models without integral support feet,
install the ring stand to the underside of the volute
with the supplied fasteners. Apply a thread locking
compound to threads before installing, such as
blue #242 thread locking compound.

Pg. 4

Installation, Operation & Maintenance Manual