H Series
Installation, Operation
& Maintenance Manual
Project: _________________________
Installation: ___________________
Pump Model: ____________ Serial Number: ____________
HOMA Pump Technology, Inc.
390 Birmingham Boulevard y Ansonia, CT 06401
H 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.
1. Do not work alone.
2. 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.
3. Wear safety helmet, goggles and protective
shoes, or appropriate safety materials required.
4. 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.
5. Do not stand under suspended loads!
6. 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.
7. 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.
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!
The power cable ends must be protected from
immersion in water as well as moisture intrusion.
The cable will wick if it is not protected properly.
Power cable leads shall be covered with shrink
tubing.
Short-term storage is defined as any time less
than six months. We recommend for this time
intended to store the pump 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.
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.
Installation, Operation, and Maintenance Manual
H 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 plus or minus 1% and the maximum
corrected power factor shall be 1.0.
POWER LEAD WIRING
The ends of the cable leads are marked. Please
refer to wiring diagram in the appendix for
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. They are
normally closed, designed to open under a high
temperature condition and close when the
temperature drops below the set point. THEY
MUST BE WIRED TO A CURRENT
REGULATED CONTROL CIRCUIT.
Identify leads marked T1 and T3 and connect
these wires to the thermal overload relay located
in the control panel. Thermal switch leads must
be connected to validate warranty.
SEAL PROBE WIRING (OPTIONAL)
The probe utilized in the pump is a conductive
sensor and is normally open. Only one lead is
required to be connected to the seal fail relay
located in the control panel. Probe is grounded
to pump.
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.
Installation, Operation, and Maintenance Manual
H Series
INSTALLATION OF PUMP:
The H 500/700 series pumps can be
transportable from one installation to another. It
is intended to operate completely or partially
submerged in the pumping liquid. Pump is
designed to be installed as a freestanding unit.
The pumping media is delivered by a hose,
which is connected to the pump.
Install the tube half coupling on to the pump's
fixed coupling by rotating clockwise until it locks.
Provide a hose of appropriate diameter and
secure to the tube half coupling.
Install suitable lifting chain of an adequate length
to ensure proper lowering and raising
capabilities. Lower the pump into the area where
it is required.
The drainage pumps can be connected in a
duplex series arrangement for installations
where the system head is high. In order to set
this system up it will be necessary to provide a
hose that connects the discharge of the lower
pump to the suction of the bottom pump. The
connection steps for the bottom pump is
identical to the procedure described above. The
top pump's suction strainer needs to be removed
and replaced with a tandem operation coupling
(consult Authorized Homa Pump Technology
Representative for ordering information). Install
a half-coupling to the tandem operation coupling
and install the other end of the connection hose
to the half coupling. The discharge hose for the
upper pump is connected in the same manner
as for a simplex installation.
START-UP
Prior To Applying Power
Prior to applying power to the pump; double
check all wiring and verify that the power
(Voltage, Phase) that will be supplied to the unit
matches the nameplate specified values.
Measure resistance of cable and pump motor
resistance of ground circuit between control
panel and outside of pump. Perform MEG ohm
check of motor insulation. Record all data on
start-up checklist, which is included with this
manual.
Prior To Installation:
Before lowering the pump into position check the
direction of rotation. The impeller will rotate
clockwise as viewed from above; therefore the
pump will try to move in the counter clockwise
direction as the impeller rotates. "Bump the
Motor" by closing the pump circuit breaker and
push the pump start button and look for the
direction of movement specified above. For three
phase motors, if the starting jerk is in the
clockwise direction, open the circuit breaker to
isolate power and interchange two of the three
phase leads inside the control panel.
If the above checks prove satisfactory the pump
is ready for operation. Lower the pump into
position. (Refer to Mechanical installation
section of this manual.) Start the pump and allow
it to stabilize prior to recording any test data.
Listen for any unusual noise and be on the
lookout for unusual vibration (Detectable on
discharge piping and inlet stand for dry pit
installations.) Also for wet well installations, look
for blow by flow at the discharge connection.
Perform all remaining electrical, operational, and
performance tests specified on start-up
checklist. Record and provide details on the
checklist to validate warranty.
Installation, Operation, and Maintenance Manual
H Series
3 Phase Cable Connection Diagrams
7 Conductor
Power and Control Cable
Note: Internal Seal Probe is optional.
4 Conductor Power Cable
Dual Voltage Pumps
Dual Voltage pumps will have wiring connected as indicated below. These
units may be field connected for either 230v or 460v operation by
reconnecting the wires as indicated below.
Installation, Operation, and Maintenance Manual
H Series
1 Phase Cable Connection Diagram
H500/3/2/1 requires: 8857010
80 uf @ 330V Start Capacitor
40 uf @ 370V Run Capacitor
Optional External Seal Probe
Installation, Operation, and Maintenance Manual
H Series
Initial Installation Troubleshooting:
Only authorized Homa Pump Technology
service personnel who are trained professionals
shall troubleshoot and repair pumps that are
experiencing performance difficulty.
The following is a tabulation of common
pump problems and possible causes.
Symptom
Possible Causes
Pump will not start
1,2,3,4
Little or zero discharge
5,6,7,8,
Insufficient discharge flow/pressure
5,6,9,10,11,12
Excessive power consumption
6,9,13
Excessive current draw
6,13,14,15
Excessive pump vibration/noise
12,15,16
Pumps runs & motor protection trips
17,18,19,20,21
Pumps runs manually, but not automatically
22,23,24
`
LISTING OF CAUSES
1. Incorrect or no power supplied to motor.
2. Power cable cut.
3. Short to ground in cable or motor winding.
4. Control Panel circuit breaker open.
:
5. Actual System head is higher than calculated
or specified.
6. Incorrect impeller rotation direction.
7. Sump liquid level is below pump's minimum
submergence requirement.
8. Closed discharge valve.
9. Wear ring (s) worn. (If Applicable).
10. Vortex at Pump's suction.
11. Discharge valve partially closed.
12. Insufficient NPSHA (Dry Pit Application).
13. Actual System Head is lower than specified
resulting in over pumping condition.
14. Voltage supply to motor is lower than
required by motor.
15. Worn bearings
16. High system head causing pump to operate
at extremely reduced capacity.
17. Object stuck inside impeller.
18. Motor not receiving voltage on all three
phases.
19. Phase currents unbalanced or too high.
20. Insulation between phases and earth
ground,<1M-ohm.
21. Density of the pumping media too high.
22. Defective level sensor.
23. Hand/Off/Auto switch not in Auto Position.
24. Defective H/O/A switch , relay or contactor
coil.
Installation, Operation, and Maintenance Manual
H Series
PREVENTIVE MAINTENANCE
Regular preventive maintenance will help ensure
longer pump life and more reliable operation. It
is recommended that pumps in intermittent
operation be inspected twice a year and pumps
in continuous operation be inspected every
1,000 hours. The following is a listing of required
inspection and maintenance items. (Refer to
shop manual for disassembly and reassembly
procedures).
If any of the problems described in the
following list exists stop operating the pump
to avoid damage or personal injury.
1. CABLE ENTRY
Make sure that the cable entry flange and strain
relief clamp are tight. If the cable entry is
showing signs of leakage remove cable from
entry, remove grommet, cut a piece of cable off
so that the grommet seats on a new portion of
the cable, replace grommet, and reinstall cable
assembly, into the top of the motor.
2. CABLES
Inspect the cable for cuts, scrapes or sharp
bends. If the outer jacket is damaged, replace
the cable. Do not attempt splices within wetwells
3. MOTOR INSULATION RESISTANCE
Megger the insulation between the phases and
between any phase and ground. Resistance
values should be greater than 1 M ohm. If
abnormal readings are obtained contact
authorized service center immediately.
4. EXTERNAL PARTS ON PUMP
Make sure that all screws, bolts and nuts are
tight. Check the condition of pump lifting eyes
and replace if damaged or worn, Replace any
external part that appears worn or damaged.
5. SEAL CHAMBER OIL
Check the condition of the oil to see if any water
leakage has occurred. Remove the oil fill plug.
Drain the oil from the seal chamber into a
transparent container. Check for impurities and
emulsification. (Oil is cream-like.) If water
intrusion has occurred check lower mechanical
seal and replace if necessary. Refill seal
chamber with fresh oil. Refer to shop manual for
type and quantity of oil.
6. IMPELLER
Periodically inspect impeller by turning
pump on its side, remove suction strainer
nuts and strainer to expose impeller and
relocate position of adjusting plate
(suction cover) as needed. Replace the
impeller if it is damaged or severely
worn.
SPARE PARTS
In order to obtain spare parts identify the
required parts by looking at the enclosed cross
sectional drawing and listing, and contact
authorized HOMA PUMP TECHNOLOGY
representative with your order. Authentic Homa
Pump Technology parts shall be used to
maintain warranty.
RECOMMENDED TOOLS AND
SUPPLIES
In addition to ordinary, standard tools, ensure
that complete set of metric socket wrenches,
complete set of Allen wrenches, metric triangular
wrench set, dead blow hammer, impeller puller,
Loctite 242 (Blue), petroleum jelly and anti- seize
compound are on hand.
If you need additional help,
please call us at:
1 (800) 452 - HOMA
Installation, Operation, and Maintenance Manual
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