Hydromatic HPGFHX, Инструкция по установке и обслуживанию, Страница: 3 / 12

only qualified electricians should
make the installations. Complete
wiring diagrams are included for
use in making the installation.
All wires should be checked for
shorts to ground with an ohmmeter
or Megger
®
after the connections
are made. This is important, as
one grounded wire can cause
considerable trouble.
IMPORTANT: If equipment is not
properly wired and protected as
recommended, Hydromatic warranty
is void.
Caution: The 230 volt 3 phase
pump has a dual marked nameplate.
Voltage may be rewired by the
manufacturer or a Class I Div 1
equipment qualified electrician.
Once the voltage is changed, the
factory cord tag indicating 230 volt
3 phase must be removed.
For record keeping purposes,
we suggest the pump be marked
externally with the new voltage and
qualified personnel that performed
the change. Pumps shipped from the
factory as 460 volt 3 phase cannot
be rewired to any other voltage.
To Re-wire the pump from 230V
to 460V 3 phase:
Only a 230V pump from the factory
is considered dual voltage, a cord
label clearly states the factory
wound voltage.
Remove all bolts securing cord
assembly then raise the cord cap
assembly enough to slip a prying
instrument on opposite sides
between the cord cap casting and
the junction box. Take care to not
damage the o-ring or the machined
surfaces of the castings. Doing so
could void FM agency certifications.
While prying evenly on both sides;
separate the cord cap casting from
the motor housing, the assembly
is airtight and will have a vacuum
effect when disassembling. Once
separated, the cord cap can be
inverted and rotated to the outside
of the pump assembly, and a bolt
can be re-used to secure the upside
down cord cap to the motor housing
for ease of rewiring.
Refer to the wiring diagram within
this manual for wiring details.
Once all electrical connections
are finished and secure (a crimped
electrical connector is best to
prevent issues due to vibration
if required), the cord cap should
be re-attached reversing the steps
above. Ensure the o-ring is in place
and perform a hi-pot test for safety
once everything is complete.
Heat Sensor and Seal
Failure Connection:
If a Hydromatic control panel is
used, terminal blocks are provided
for heat sensor and seal failure
connections (see panel schematic). If
a control panel is supplied by others,
it must allow heat sensor and seal
failure terminations.
Installing Sump Level Control
Float Controls:
In either simplex, duplex or triplex
systems the lower or turn-off control
is to be set to maintain a minimum
level in the sump. This level shall
be no more than 3
1
⁄
2
" from the top
of the motor housing down to the
surface of the sewage.
The second, or turn-on control, is
set above the lower turn-off control.
The exact distance between the
two floats must be a compromise
between a frequent pumping cycle
(10 starts per hour maximum) to
control septicity, solids and a slower
cycle for energy economy. This
distance should be determined by
the engineer or consulting engineer,
depending on the conditions of
the application.
For installation of Hydromatic
supplied level controls refer to
your system’s installation and
service manual.
Pump Operations
Starting the Pump:
To start the pump, perform the
following steps in order:
WARNING! Keep hands and
clothing away from cutters
and impeller!
If pump is three-phase, the rotation
of the impeller must first be
checked. Lift pump from sump, lay
it down and quickly turn pump on
and then off.
The impeller should turn
counterclockwise when viewed from
the suction. If rotation is wrong, turn
off main breaker and interchange
any two line leads to motor to
correct rotation.
1. If pump is piped-in permanently
and inlet cannot be observed,
rotation will have to be
checked by pump operation
described later.
If pump is single-phase, no
rotation check is necessary.
2. Run water into sump until motor
is covered.
3. Open gate valve in
discharge line.
4. Turn pump on. If pump runs
and sump liquid does not pump
down, stop pump and close
discharge gate valve. Then lift
pump until sealing flange is open
to vent off trapped air. Lower
pump, open discharge valve, and
start the pump again.
If pump is piped in permanently,
it may be necessary to break
union at pump discharge to
clear air.
5. If pump is three-phase, piped-in
permanently and still does not
operate properly after venting,
rotation is wrong and can be
reversed by interchanging any
two line leads.
6. Level controls should be set
in accordance with “Installing
Sump Level Control Float
Controls” above.
Pump Maintenance
As the motors are oil filled, no
lubrication or other maintenance
is required.
If the heat sensor and seal failure are
hooked up properly, no attention is
necessary as long as the seal failure
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