Product Manual

PAGE 18 — MQ62TK SERIES TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (01/30/18)
GENERAL INFORMATION
The MQ62TK series trash pump is a self-priming pump
powered by a 35-horsepower, liquid-cooled, Kohler
diesel engine. The pump's suction and discharge ports
are six inches in diameter, enabling a discharge rate of
approximately 1,190 gpm (4,505 lpm).
TRASH PUMPS
Trash pumps derive their name from their ability to handle
a greater amount of solid debris than standard centrifugal
pumps. Trash pumps are unlikely to clog, as they can
handle water containing 25% solids by weight, and can
accomodate solids up to one-half the size of the discharge
opening. If the pump does become clogged, it can be
disassembled quickly without the use of tools to allow for
debris removal.
APPROVED TYPES OF FLUID TO PUMP
The MQ62TK series is approved to dewater/water fresh
water fluids that may contain certain levels of debris.
The pump is not intended to pump salt water, strong
alkalines, or low PH level fluids that can cause premature
failure to internal components.
PUMP PRIMING
This wet-primed pump requires that the pump casing
is first filled with water to assist with initial self-priming
operations. Once a partial vacuum is created within the
unit, the reduced atmospheric pressure allows water to
flow through the suction line, and the centrifugal force of
the impeller/volute assembly permits water to be expelled
from the discharge ports.
NEVER attempt to operate the pump without first filling the
main pump casing with clean water.
PUMP PLACEMENT
ALWAYS place the pump in a level position on solid,
stationary ground. Place blocks under the trailer's bumper
to prevent the trailer from tipping, and place chock blocks
behind each wheel to prevent the trailer from rolling.
NEVER place the pump on soft soil. The suction hose or
pipe connection should always be checked for tightness
and leaks. A small leak in the suction hose or fittings may
prevent the pump from priming.
SUCTION LIFT
The MQ62TK series trash pump has a maximum suction lift
of 25 feet (7.6 meters) at sea level. To obtain the optimum
suction lift, ALWAYS place the pump as close to the water
as possible and use the shortest possible suction line.
ELEVATION
The elevation at which the pump is operated impacts its
performance. Due to decreased atmospheric pressure at
higher altitudes, the pump's priming ability is reduced as
elevation increases.
Pumps generally lose one foot of priming ability for every
1,000 feet (305 meters) of elevation above sea level.
For example, in Flagstaff, Arizona, where the elevation is
approximately 7,000 feet (2,134 meters) above sea level, a
pump with a suction lift of 25 feet (7.6 meters) at sea level
will have a suction lift of only 18 feet (5.5 meters).
MECHANICAL SEAL LUBRICATION
An oil-lubricated mechanical seal prevents water from
seeping into the engine. The oil in the seal chamber
lubricates the seal and prevents it from overheating. NEVER
operate the pump without water in the casing as this may
cause the seal to fail. See the Maintenance section of this
manual for more information.
PUMP MOUNTING OPTIONS
The MQ62TKT is mounted on a multipurpose trailer with
a 28-gallon fuel tank.
The MQ62TKS is mounted on a reinforced steel skid
assembly with a 16-gallon fuel tank (Figure 4).
ACCESSORIES
Multiquip offers a complete line of fittings, hoses, and
couplers for various pump applications. Refer to the parts
list section of this manual for a complete list of accessories.