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

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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