PAGE 12 — QP-3TH TRASH PUMP — OPERATION & PARTS MANUAL — REV. #4 (10/27/06)
QP-3TH — GENERAL INFORMATION
APPLICATION
The
QP-3TH Trash Pump
is designed to be used for de-watering
applications. Both the suction and discharge ports on the QP-
3TH trash pump use a 3-inch diameter opening, which allows
the pump to pump at a rate of approximately 396 gallons/minute
(gpm) or 1,500 liters/minute (lpm).
Trash pumps are designed to purge air from the suction line and
create a partial vacuum in the pump body. The reduced
atmospheric pressure inside the pump allows water to flow
through the suction line and into the pump body.
Power Plant
This trash pump is powered by an 8.0 horsepower air cooled 4-
stroke, single cylinder
HONDA GX-240
gasoline engine that
incorporates a low "
Oil Alert Feature
"
Oil Alert Feature
In the event of
low oil
or
no oil
, the HONDA GX-240 engine has
a built-in oil alarm engine shut-down feature. In the event the oil
level is low the engine will automatically shut-down.
Trash Pump
Trash pumps derive their name from their ability to handle a
greater amount of debris and solids than standard centrifugal
pumps. These pumps generally handle solids up to 1/2 the size
of the discharge opening making them less likely to clog. Also
trash pumps are capable of handling water with 25% solids by
weight.
The advantage of using a trash pump is that it can be quickly and
easily disassembled in the field "
without tools
" and easily
cleaned when clogged.
Suction Lift
This pump is intended to be used for dewatering applications
and is capable of suction lifts up to 25 feet at sea level. For
optimal suction lift performance keep the suction hose or line as
short as possible. In general always place the pump as close to
the water as possible.
Pump Support
The pump should always be placed on
solid stationary ground
in a level position.
NEVER
place the pump on
soft soil
. The suction hose or pipe
connection should always be checked for tightness and leaks. A
small suction leak in the hose or fittings could prevent the pump
from priming.
Elevation
Higher elevations will effect the performance of the pump. Due to
less atmospheric pressure at higher altitudes, pumps
DO NOT
have the priming ability that they have at sea level. This is due to
the “thinner air” or lack of oxygen at higher altitudes.
A general rule of thumb is that for every 1,000 feet of elevation
above sea level a pump will lose one foot of priming ability.
For example, in Flagstaff, Arizona where the elevation is
approximately 7,000 feet, the pump would have a suction lift of
only 18 feet rather than the 25 feet at sea level. Table 3 shows
suction lift at various elevations.
Table 4 shows percentage drops in performance as elevation
increases.
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Содержание QP3TH
Страница 2: ...PAGE 2 QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06...
Страница 25: ...QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06 PAGE 25 NOTE PAGE...
Страница 30: ...PAGE 30 QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06 QP 3TH PUMP ASSY PUMP ASSY...
Страница 32: ...PAGE 32 QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06 QP 3TH PUMP ASSY PUMP ASSY...
Страница 60: ...PAGE 60 QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06 PISTON ASSY HONDA GX240K1QA2 ENGINE PISTON ASSY...
Страница 66: ...PAGE 66 QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06 HONDA GX240K1QA2 ENGINE LABELS ASSY LABELS ASSY...
Страница 69: ...QP 3TH TRASH PUMP OPERATION PARTS MANUAL REV 4 10 27 06 PAGE 69 NOTE PAGE...
