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MP Pumps FLOMAX 5, 8, 10, 15 DBL. SEAL PUMPS INSTRUCTION User Manual

Form 3064-a, Instruction bulletin

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INSTRUCTION BULLETIN

Flomax 5, 8, 10 and 15 - Self Priming Double Seal Pumps

Overview:

These instructions pertain to double seal Flomax 5,

8,10 & 15 pump end installation and assembly. Your

Flomax pump may have included a driver such as

close-coupled electric motor, engine, bearing pedestal

or hydraulic motor pedestal that will hereafter be

referred to as the driver.

PUMPAK ASSEMBLY: (pump end suitable for

mounting to various drivers).

1.

Loosen the drive sleeve clamp.

2.

Slide the pump onto the driver by hand. This

should not require extreme force.

3.

Install and tighten fasteners (4 screws) into the

pump adaptor securing the driver.

4.

Tighten the FM5 &8 drive sleeve clamp nuts to

10 to 14 ft-lbs. FM10 & 15 tighten 20 to 26 ft-

lbs.

5.

Remove the metal shim strap that spaces the

impeller by pulling it out of the discharge.

6.

Rotate the shaft to ensure that the pump rotates

freely before putting the pump into service.

INSTALLATION:

Optimum performance can be attained by placing the

pump as close to the liquid source as possible.

Secure the pump by mounting it to a foundation or

base plate.

Hose or pipe can be used on the suction and

discharge. The suction line must not be reduced in

size. If hose is used, reinforced non-collapsible type

is recommended. The discharge line must be rated to

the maximum pressure developed by the pump.

Avoid kinks in the hose and unnecessary restrictions

that may affect pump performance.

All pipe connections must be sealed with adequate

thread sealant. A small air leak in the suction line

will affect priming performance. If a throttling valve

is used to adjust the flow rate, it should be mounted

to the discharge piping only - never in the suction.

A large low restriction de-watering type strainer must

be used whenever there are solids present in the

liquid source.

OPERATION:

Fill the pump with liquid prior to starting through a

fitting on the discharge piping. The pump housing

should be completely full. If the pump has a

discharge valve it must be fully open to expel air

during priming at initial start-up. Long horizontal

suction lines require extra time to prime, 2 additional

minutes for every 10 feet of horizontal run.

Start the pump driver. The pump will prime the

suction hose and establish flow in about 5 minutes,

more or less, depending upon the lift distance and

length of horizontal run. After prime, the pump will

perform to its full flow capability.

After the initial prime, the pump will retain liquid in

the housing and may not need to be refilled after

shutdown and restart even if the suction pipe has air

in it.

PERIODIC MAINTENANCE:

The double seal reservoir uses grease to lubricate and

cool the shaft seals. The grease cavity should be

greased with a polyurea based NLGI #1 (preferred

grease). Other grease types may yield adequate

performance. The grease maintenance interval is 6

months. Grease can be added by using a grease gun

to fill until the relief valve opens and expels

additional grease.

The relief valve may open up and expel additional

grease during the first thermal cycle. This is normal

where about ¼ ounce of grease may be relieved.

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Form 3064-A

9/03

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