HOMA CTP Series User Manual

CTP Series

Installation, Operation

& Maintenance Manual

Project: _________________________
Installation: ___________________

Pump Model: ____________ Serial Number: ___________

PN# CTPIOM 7/08

390 Birmingham Boulevard y Ansonia, CT 06401

CTP 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
installation 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
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.

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.
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.

Short Term Storage: Short term storage is
defined as any time less than six months. We
recommend that pump and accessories be
stored in their 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
suitable paint. Store the pump 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 oil in the mechanical seal chamber should
be drained and replaced prior to commissioning.
Store the pump in an upright position.
Pg. 2

Installation, Operation & Maintenance Manual

CTP 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 plus or minus 10% of the nameplate
value, frequency shall be plus or minus 5% 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 CTP 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 two separate
cables, or may use two conductors within one
cable. Please refer to wiring diagram in the
appendix 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
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 CTP 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.

Note: All sizes of Class1, Div. I 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 the 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 wiring
schematics in the appendix. 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

Installation, Operation & Maintenance Manual

CTP 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 (min. 8” above volute) in the
pumping media.

The HOMA Auto-Coupling kit includes a base
elbow, guide claw flange and upper guide rail
bracket. Kit also includes a profile seal and base
anchor bolts. Refer to dimensional drawing for
details.

CTP 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 auto-

coupling 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.

Installation, Operation & Maintenance Manual

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

For all pumps, properly locate the base and
with anchor bolts provided fasten 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. (Refer to outline drawing
in appendix). 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 will extend
down to the sump floor.

For stations exceeding 15 feet in depth,
intermediate guide bar brackets are
recommended. One bracket is recommended
for each additional 15 feet of station depth.

Install upper guide bar bracket as shown on
outline drawing located in the appendix. 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. It is intended to
operate completely or partially submerged in the
pumping liquid.
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