Product Manual A
Operation
31609 A MTP4000-6000DZV/DZD Operating Manual 41
7. Attach a flexible hose to the outlet (discharge) side of the pump. Make sure the O-ring seal is present in the
fitting on the pump before attaching the fitting.
Note: Lubricate the O-ring seal with grease to ensure an airtight seal.
8. Use a concentric taper on the discharge side to increase discharge pipe/hose diameters. All valving and
additional fittings should be the same size as the discharge main-line. The discharge size should be ade-
quate to maintain reasonable velocities and reduce friction losses. It is strongly recommended that a pres-
sure relief valve is installed on the discharge piping.
9. Before proceeding, check the intake and outlet hoses for sharp bends or kinks that may restrict pump flow.
The intake hose should slope upwards toward the pump to avoid development of air pockets in the hose
which may lead to pump cavitation. Keep the hoses as straight as possible.
10. The pump is self-priming, but should never be operated unless there is liquid in the pump casing. The pump
casing needs to be half filled with liquid in order to prime. Remove the cover from the top of the pump volute
and fill the pump casing with water.
PUMP PRE-USE CHECKPOINTS
Before using the pump, be sure to check the following:
• Place the pump as close as possible to the liquid being pumped, keeping the number of hose sections and
couplings to a minimum. The pump should be the highest point between the intake and outlet section of the
suction hoses.
• Make sure the ground is firm and as level as possible. Block the wheels on the trailer to keep it from moving.
• Check the pump discharge area; make sure discharge will not erode the material under the pump or damage
any nearby structures.
• Ensure all hose couplings are of the same size and type.
• All hoses/piping should be supported, braced and lined up square before connecting to the pump flanges.
A flexible fitting is recommended on both suction and discharge to eliminate misalignment loads or stresses
being transmitted to the pump.
Note: Flexible pipe couplings must be restrained so as not to transmit any strain to the pump flanges when expanding
or contracting under pressure. Unrestrained expansion fittings can transmit enormous forces to the pump flanges.
WARNING
The pump is designed to handle water and/or other liquids containing some slurries
and other entrained solids up to a certain diameter (Refer to “Pipe Submergences” on
page 40 for the correct diameter). It MUST NOT be used to pump volatile, corrosive
or flammable materials that can damage the pump, cause pump failure or result in
explosion. Serious personal injury could result.
PRESTART CHECKLIST
Ensure all fasteners at gasketed surfaces are properly tightened.
6 2.1
3.7 5.3
8 1.7
2.8 3.8
4.9 6.0
10 1.6
2.3 3.1
3.8 4.6 5.4 6.1 6.9 7.6
Table 1: Pipe Submergences
FLOW (GPN) 500 1000 1500 2000 2500 3000 3500 4000 4500