HOMA CH-H User Manual

CH / H Series

Installation, Operation

& Maintenance Manual

Project: _________________________
Installation: ___________________

Pump Model: ____________ Serial Number: ____________

HOMA Pump Technology, Inc.

390 Birmingham Boulevard y Ansonia, CT 06401

CH 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
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.

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 an air dry
enamel paint.

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.

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Installation, Operation & Maintenance Manual

CH 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 CH 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 two conductor. Two 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
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. Smaller CH pumps have internally
connected thermal switches. These units will
not have cable leads marked T1 & T3. Larger
CH pumps, and all Explosion Proof pumps will
have the thermal

switches configured for external control. Pumps
with external thermal switch connections must
be wired by a current regulated control circuit in
accordance with the NEC. Identify thermal
switch leads marked T1 and T3 in the power or
control cable. The resistance across these
leads will be .5O. These leads must be
connected to the thermal overload relay located
in the control panel. Thermal switch leads must

be connected to validate warranty.

SEAL PROBE WIRING (OPTIONAL)

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 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.
Please refer to nameplate for verification of
capacitor sizing.

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Installation, Operation & Maintenance Manual

CH Series

MECHANICAL INSTALLATION:

PUMPS WITH AUTOCOUPLING
SYSTEMS

In the AutoCoupling installation mode the pump
is installed on a stationary component and
operates completely or partially submerged
(min. 8” above volute) in the pumping media.

The HOMA AutoCoupling kit base, guide claw
flange, upper guide rail bracket, profile seal and
base anchor bolts. Refer to dimensional drawing
for details.

For Threaded Discharge CH Series pumps,
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.

3. Apply hardening thread sealer (for example
Loctite thread locker 242) to pump discharge
threads.

4. Thread guide claw flange on to pump
discharge fully. DISCHARGE THREADS ARE

NOT NPT. DO NOT OVER TIGHTEN.

5. Loosen guide claw flange full turn to expose
some threads.

6. Re-apply sealant on exposed threads .

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

For Flanged Discharge CH Series pumps, attach
the guide claw flange to the pump discharge
flange with the fasteners and gaskets
recommended in the accessory fastener
selection table. Use tightening torque’s indicated
in the table.

Install suitable lifting chain of an adequate size
and length to permit proper lowering and raising
of the pump. Lower the pump into the area
where it is required.

Install upper guide bar bracket as shown on
outline drawing located in the appendix. Do not
tighten mounting bolts completely at this point.
Properly locate the base anchor bolts into the
floor of the pump station Make sure when

Installation, Operation & Maintenance Manual

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). Place the base in position,
and level the base. If base is not level, proper
sealing of the pump to base will not occur!

Fully tighten all anchor and mounting bolts, and
verify that the profile seal is in position .

Place the guide rails in to the rings of the base
and cut them to a length that will allow the rails
to be secured at the top of the pump station with
the upper guide bar bracket and to extend down
to the sump floor. Loosen bracket mounting
bolts, install guide pipes into bracket and tighten
mounting bolts. For stations exceeding ten 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. Connect the station riser piping to
the outlet flange of the base.

Before lowering the pump verify the direction of
impeller rotation (refer to start-up section for
procedure). Also it is recommended that the

stationary fitting be visible before lowering the
unit. If this is not possible, ensure all debris is
removed from wet well.

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. Lift, 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.

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