HOMA H Series - Manual (Page 4)

H Series
P U M P
Installation, Operation, and Maintenance Manual
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.