Xylem IM191 R03 Marlow Series Prime Line Self-Priming Centrifugal Pumps - Manual (Page 8)

8
Hazardous fluids can
cause personal injury
or property damage.
WARNING
WARNING
Hazardous voltage
can shock, burn or
cause death.
Hazardous pressure can
cause personal injury,
property damage or death.
CAUTION
BEARING FRAME
1. Replace lip seals if removed.
2. Replace ball bearings if loose, rough or noisy when rotated.
3. Check shaft (38) for runout. Maximum permissible is
0.002" (0.05 mm) TIR.
4. Refer to the “MAINTENANCE” section of this manual
for bearing frame lubricating instructions.
5. Refer to the “MAINTENANCE” section of this manual
for bearing replacement of the E-Series bearing frame.
LIQUID END
1. Inspect shaft removing any debris or burrs.
2. Treat shaft with LOCQUIC
® Primer “T”, or equivalent,
following manufacturer’s instructions carefully.
3. When replacing shaft sleeve, spray new shaft sleeve’s bore
with LOCQUIC ® Primer “T”, or equivalent. Let parts dry
and then apply LOCTITE ® #271 on the same surfaces.
Slide new sleeve, I.D. chamfer end first, over shaft with a
twisting motion, wipe off excess. Let cure according to
instructions.
NOTICE: MECHANICAL SEAL MUST BE REPLACED
WHENEVER SEAL HAS BEEN REMOVED.
FOLLOW SEAL MANUFACTURER’S
INSTRUCTIONS CAREFULLY. FOR PACKED
BOX PUMPS SEE “PACKED BOX
INSTRUCTIONS”.
4. The stationary seal seat may be dipped in water to ease
installation. Place stationary seal seat squarely into seal
housing bore. Cover the polished face of the seat with
a thin piece of cardboard or paper towel. Press seat firmly
into bore using a round piece of plastic or wood that
disperses the force over the entire seal face. NOTE: If
mechanical seal is supplied with a spring retainer, remove
and discard the retainer.
5. Place adapter, concave face pointing up, over motor/frame
shaft and lower it onto the mounting face.
6. Install seal housing on adapter. Exercise care in that the
motor shaft does not dislodge or damage seal seat.
7. Fully and squarely install the rotary assembly of seal
against the stationary seat.
NOTICE: REPLACE IMPELLER BOLT/NUT AND
WASHER WHENEVER IMPELLER IS REMOVED.
8. Install impeller key in shaft keyway. Mount impeller on
shaft and push until it bottoms. Hold in place.
9. Install new impeller washer.
Reverse disassembly procedure to reassemble the pump.
NOTE: Make sure all gaskets, o-ring, rubber check valve and
seal assembly are in good condition before reassembly.
HYDROTEST
NOTE: If hydrostatic test is required in the field, it must
be performed with check valve removed or with partially
open check valve.
The hydrotest pressure is generally 1½ times the working
pressure.
To set up the pump for hydrostatic test follow these
instructions:
Before hydrotesting the pump all air must be removed
from the suction priming chamber. This is done by:
(a) Removing ¼" pipe plug from top of the suction
inlet (50).
(b) Install a ¼" pet cock valve (not supplied by Goulds
Water Technology) in place of pipe plug.
(c) With pet cock open fill casing (1) with fluid being
pumped through filler plug (129) provided on top of
casing. Do not close pet cock until all air is out of
casing (as shown by a solid stream of liquid coming
out of pet cock).
(d) Close pet cock, reinstall filler plug. Unit is now ready
for hydrotest.
Maintenance
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE SHOCK,
BURNS OR DEATH.
FAILURE TO RELIEVE SYSTEM
PRESSURE AND DRAIN SYSTEM
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
IF PIPING HAZARDOUS OR TOXIC
FLUIDS, SYSTEM MUST BE FLUSHED
PRIOR TO PERFORMING SERVICE.
CLOSE-COUPLED UNITS
• Bearings are located in and are part of the motor. For lubrica-
tion information, refer to motor manufacturer’s instructions.
FRAME-MOUNTED UNITS
P-Series
• S Frame has greased for life bearings. No regreasing is
possible or necessary.
• ML frame should be regreased every 2,000 hours or at a
three month interval, whichever occurs first. Use a #2
sodium or lithium based grease. Fill until grease comes
out of relief fittings, or lip seals, then wipe off excess.
E-Series
• Set and maintain oil level as shown below.
• Follow motor and coupling manufacturer’s lubrication
instructions.
• Recheck coupling alignment.
MAX.
MIN.
SIGHT WINDOW
1 /
4
"
Approximately
52 fluids ounces.