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WARNING:
DO NOT RUN THE PUMP bEFORE PRIMING IT. THE SEAL AND IMPELLER COULD bE PERMANENTLy DAMAGED.
a)
PRIMING: These pumps are not self-priming. For best results, use
a foot valve and priming fitting as shown in Fig. 1. Slowly add water
through the priming fitting until both the suction line and casing are
full.
b)
STARTUP: NEVER operate the pump dry as this may damage the
seal. If the pump does not deliver water after two minutes, repeat
the priming operation.
DRAINING: Should the pump be subject to freezing temperatures,
c)
it will be necessary to drain the pump completely. This is done by
removing the drain plug on the bottom of the front face of the pump
a)
LUbRICATION: The pump itself does not require lubrication. On
FAOT series pumps, the transmission uses sealed bearings which
have been greased for life at the factory and are not intended to
be re-lubricated.
b)
DISASSEMbLy: (Refer to Fig. 2 & 3)
•
Disconnect power source from transmission and remove suction
and discharge piping prior to any disassembly.
•
Remove four 3/8" nuts securing casing (4) to transmission hous-
ing (2) and carefully remove casing & gasket (6).
•
Remove impeller (3) from shaft. Impeller is threaded onto shaft
in normal fashion.
•
Remove mechanical seal (7) from shaft.
•
Remove snap ring (5) from back of transmission housing and
press out shaft/bearing unit (3).
NOTE: Premature seal failure may be a result of pumping corrosive chemi-
cals. A seal for chemical handling is available (see Repair Parts List).
c)
REASSEMbLy: (Refer to Fig. 2 and Repair Parts List)
•
Carefully clean all parts. Replace parts showing signs of exces-
sive wear. Apply film of light oil to bearings,shaft and on the
inside of transmission housing.
•
Apply a light soapy lubricant onto the rubber only seal seat and
press into housing. Make sure that the seat is seated properly.
•
Install flinger (8) on threaded end of shaft/bearing unit (3), press
unit into housing and install snap ring (5).
•
Install rotating mechanical seal onto shaft with the shiny side of
the washer facing towards white ceramic seat. Install impeller
securely (3)
PRObLEM
PRObAbLE CAUSE
Failure to pump
Pump not properly primed.
Speed too low.
Total head more than that for which pump was intended. A pump designed for higher head is needed.
Excessive suction lift.
Reduced capac-
Air pockets or leaks in suction line.
ity and/or head
Clogged impeller, suction line or foot valve.
Reverse impeller rotation.
Insufficient submergence of suction line.
Excessive suction lift.
Total head more than that for which pump was intended. A pump designed for higher head is needed.
Excessively worn impeller.
Pump loses
Air leaks in suction line.
prime
Excessive suction lift and operating too near shut-off point. Move pump nearer water.
Water level drops while pumping, uncovering suction piping. Check water supply. Add length of pipe to suction line to keep submerged end under water.
Mechanical trou-
Bent shaft and/or damaged bearings.
ble and noises
Suction and/or discharge piping not properly supported
and anchored.
Misalignment.
Seal leaking due to corrosion of sealing.
OPERATION
casing. After all the water has been drained, operating the pump
for a few seconds will ensure that the impeller is devoid of water.
Ensure that the lines are also free of water.
d)
STORAGE OF PUMP: Drain liquid from pump to prevent frost
damage. It is recommended that a good rust inhibitor be put
inside the casing to prevent corrosion. When restoring use of the
pump, replace all plugs and ensure that all connections are tightly
sealed. After a complete check, make the initial prime according
to directions under the heading, PRIMING.
MAINTENANCE
•
Install gasket (5) and casing (1) to assembly using (4) 3/8" NC
nuts and lockwashers.
•
Ensure shaft turns freely and reconnect piping.
Fig. 2
TROUbLESHOOTING
Check that pump casing and suction line are full of water. See priming instructions.
Check RPM of source. See installation instructions.
Locate pump closer to water. Suction losses can also be reduced by increasing suction pipe size.
Check suction piping.
Remove and clean.
Check impeller rotation against arrow on casing, reverse direction of power source if necessary.
Add lengths of suction pipe to keep submerged end well below the water surface.
Locate pump closer to source of water. Suction losses can also be reduced by increasing suction pipe size.
Order replacement parts, using Repair Parts list.
Check suction piping.
Inspect shaft and bearings, replace if necessary.
Check that all piping is supported to relieve strain on pump assembly.
Check alignment of shafts for parallelism and concentricity.
The pump seal supplied is for a fresh water use. For salt water and/or chemicals, contact factory and
supply information on material being pumped.
2
CORRECTIVE ACTION
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