RUTHMAN Gusher Pumps 7071 Series User manual

instruction manual
instruction manual
7071 SERIES
ANSI STANDARD
DIMENSION AND VORTEX
PROCESS INDUSTRY
PUMPS
GUSHER PUMPS, INC.
115 INDUSTRIAL DRIVE
WILLIAMSTOWN, KY 41097
PHONE: [phone]
FAX: [phone]
www.gusher.com
MAINTENANCE • INSTALLATION • OPERATIONS

2
SAFETY APPAREL
• Insulated work gloves when handling hot bearings or
using bearing heater
• Heavy work gloves when handling parts that have sharp
edges, especially impellers
• Safety glasses (with side shields) to protect eyes,
especially in machine shop areas
• Steel-toed shoes to protect feet when handling parts,
heavy tools, etc.
• Any other equipment needed to protect against fluids
COUPLING GUARDS
• Never operate a pump without coupling guards properly
installed
FLANGED CONNECTIONS
• Never force piping to make connection with a pump
• Use only fasteners of proper size and material
• Ensure there are no missing fasteners
• Beware of corroded or loose fasteners
PUMP SAFETY TIPS
OPERATION
• Do not operate below minimum rated flow, or with
suction/discharge valves closed
• Do not open vent or drain valves, or remove plugs
while the system is pressurized
MAINTENANCE SAFETY
• Always lockout power
• Ensure pump is isolated from the system and pres-
sure is relived before disassembling pump, removing
plugs, or disconnecting piping
• Use proper lifting and supporting equipment to pre-
vent serious injury
• Observe proper decontamination procedures
• Know and follow company safety regulations
• Never apply heat to remove impeller
FOREWORD
The design, craftsmanship, and materials used in Gusher pumps provides for optimum performance and long, trouble-
free service. As with any mechanical device, proper use and periodic maintenance will enhance the performance and life
of your pump. This manual is provided as a guideline for proper installation, operation and maintenance. THIS MANUAL
MUST BE READ AND UNDERSTOOD BEFORE INSTALLING AND OPERATING ANY 7071 SERIES ANSI STANDARD DI-
MENSION PUMP.
GUSHER PUMPS INC. SHALL NOT BE LIABLE FOR PHYSICAL INJURY, DAMAGE OR DELAYS CAUSED BY A FAIL-
URE TO OBSERVE THE INSTRUCTIONS FOR INSTALLATION, OPERATION, AND MAINTENANCE CONTAINED IN THIS
MANUAL.
WARRANTY
Gusher Pumps, Inc. will replace or repair, within one year of shipment from our plant, any pump in our judgment that has
failed due to defects in materials or workmanship, provided the pump has been properly installed and maintained and has
not been subject to abuse. These pumps must return to Gusher Pumps, Inc. with complete history of service for inspection
and warranty consideration. Gusher Pumps, Inc. does not accept the responsibility for transportation to and from our plant.
Furthermore, we do not assume any responsibility for consequential damage or loss of production.
WARRANTY IS ONLY VALID WHEN GENUINE GUSHER PARTS ARE USED.
Supervision by an authorized Gusher representative is recommended to ensure proper installation.
Additional manuals can be obtained by contacting your local Gusher representative or by calling [phone].

3
TABLE OF CONTENTS
GENERAL INFORMATION...........................................................................................4
INSTALLATION ............................................................................................................7
OPERATION ..............................................................................................................14
MAINTENANCE .........................................................................................................17
DISASSEMBLY ..........................................................................................................22
REASSEMBLY ...........................................................................................................26
APPENDIX .................................................................................................................32

4
GENERAL INFORMATION
PRECAUTIONS ....................................................................................................................................5
PUMP DESCRIPTION ..........................................................................................................................5
NAMEPLATE INFORMATION ...............................................................................................................6
RECEIVING and INSPECTION .............................................................................................................7
STORAGE .......................................................................................................................................7
HANDLING......................................................................................................................................7
PRECAUTIONS
• NEVER apply heat to remove impeller. It may
explode due to trapped liquid.
• NEVER use heat to disassemble pump. Ex-
plosion could occur due to trapped liquid.
• NEVER operate pump without coupling
guard correctly installed.
• NEVER operate pump beyond the rated
conditions to which the pump was sold.
• NEVER start pump without proper prime
(sufficient liquid in pump casing).
! WARNING !
Personal injury will result if proce-
dures outlined in this manual are not
followed.
• NEVER operate pump below recommended
minimum flow or when dry.
• ALWAYS lock out power to the motor before
performing pump maintenance.
• NEVER operate pump without safety devic-
es installed.
• NEVER operate pump with discharge valve
closed.
• NEVER operate pump with suction valve
closed.
• DO NOT change conditions of service with-
out approval of an authorized Gusher repre-
sentative.
PUMP DESCRIPTION
The 7071 Series is a horizontal, open impeller
centrifugal pump that meets dimension specifi-
cations of ANSI B-73.1.
The series consists of 5 power ends and 33
pump sizes as follows:
S Frame 5 pump sizes
M Frame 18 pump sizes
MXL Frame 7 pump sizes
XL Frame 3 pump sizes

5
Heavy Duty Casings - 300 psi wall thickness
increases life under corrosive and erosive con-
ditions. All sizes are self-venting with centerline
discharge. Drain plug offered as an option.
Heavy Duty Shaft - Minimum deflection in-
creases life for less maintenance.
Renewable Shaft Sleeve - Hook type sleeve
eases maintenance (easily removed) and is re-
leaved to allow for changes in temperature.
Power Frame - Heavy duty Power Frame is
sealed against contaminants to ensure long
bearing life. Water cooled for high temperature
applications.
Oil Lubrication - Oil lubrication is standard.
The oil level is maintained by a sight gauge and
power frame is vented. Oil may also be wa-
ter cooled for high temperature application all
power frames are jacketed as standard.
Heavy Duty Thrust Bearing - Double row thrust
bearing minimizes shaft end play for more ef-
fective stuffing box sealing, longer mechanical
seal life, and withstands greater axial and radial
thrust loads.
External Impeller Adjustment - Like new clear-
ance can be maintained with simple external
adjustment in just minutes to maintain original
high efficiencies.
Rabbeted Fits - Accurately machined rabbets
ensure positive alignment, longer seal life, easy
replacement of spare rotating element when
maintenance is required.
Contained Casing Gasket - Protects against
blow out.
Positive Sealing at Impeller - Teflon O-Ring
protects shaft from liquid being pumped.
Fully Open Impeller - is designed with back
pump-out vane to minimize axial thrust, and
designed to handle solids and stringy material.
Jacketed Stuffing Box - Is offered for high tem-
perature applications to increase seal or pack-
ing life in temperatures up to 500OF (260OC).
Direction of Rotation -The impeller must turn
counter-clockwise when viewed through the
suction opening of the pump.
NAMEPLATE INFORMATION
On every Gusher pump is a nameplate that pro-
vides information about the pump’s hydraulic
characteristics. This information will be used
when ordering spare or replacement parts for
your pump.

6
RECEIVING and INSPECTION
Gusher Pumps, Inc. has taken great care in
preparing your pump for shipment, however,
due to circumstances beyond our control, your
shipment may be received damaged. There-
fore, we strongly recommend that you take a
few minutes to check your pump upon receipt.
Check for cracked, bent, severely misaligned
(minor misalignments almost always occur
during shipment), or even missing parts. If any
such damage has occurred, you must report it
to the delivering carrier and Gusher Pumps, Inc.
immediately.
We also recommend that you check the model
number, horsepower, current characteristics,
g.p.m., and ft. head of pump received to en-
sure that you have received the pump you or-
dered for your specific operating conditions. If
you should find some discrepancy, report it to
Gusher at once.
Storage
If your pump is not going to be installed within
six months, several precautions must be tak-
en;
1. Preservative treatment of bearings and ma-
chined surfaces is required.
2. Remove packing on pumps with packed
stuffing box, the stuffing box and shaft
sleeve must be oil lubricated to also protect
against moisture.
3. Units equipped with mechanical seals must
also be oil lubricated with an oil can through
the NPT port while rotating the shaft by
hand.
4. Pump suction and discharge ports must be
covered to prevent foreign material from
getting into the pump and causing damage
when pump is started at a later date.
5. Pump must be stored in a dry location.
6. Rotate pump shaft several times every other
month.
Handling
! WARNING !
Pump and components are heavy. Serious
physical injury or damage to equipment
could occur from failure to properly lift and
support pump. Steel-toed shoes must be
worn at all times.
Use care when moving pumps. Lifting equip-
ment must be able to sufficiently support the
entire pump. Refer to Figs. 2a, b, c for proper
lifting techniques.

7
INSTALLATION
PREPARATION ....................................................................................................................................8
LOCAL/FOUNDATION.........................................................................................................................8
LEVEL BASEPLATE ....................................................................................................................... 9-10
COUPLING ALIGNMENT PROCEDURE ...........................................................................................10
ALIGNMENT CHECKS.................................................................................................................10
ALIGNMENT CRITERIA................................................................................................................11
ANGULAR ALIGNMENT...............................................................................................................11
PARALLEL ALIGNMENT ..............................................................................................................11
ALIGNMENT TROUBLESHOOTING..................................................................................................11
GROUT BASEPLATE .........................................................................................................................12
PIPING...............................................................................................................................................12
SUCTION PIPING ........................................................................................................................13
DISCHARGE PIPING....................................................................................................................14
FINAL PIPING CHECK .................................................................................................................14
PREPARATION
When preparing your pump for installation,
the discharge and suction ports must be clean
and free of anything that might prohibit a tight
connection. This is especially important on the
suction, air leaks can cause a pump to operate
poorly or to lose prime completely.
If your pump has just been taken out of stor-
age all of the grease or preservative must be
removed from the ball bearing housing. The
ball bearing housing must then be thoroughly
cleaned with kerosene or carbon tetrachloride
and relubricated. On packed pumps, it will be
necessary to clean the shaft sleeve and stuffing
box with kerosene or carbon tetrachloride and
then repack.
LOCATION/FOUNDATION
Whenever possible locate pump far enough be-
low the minimum liquid level in the reservoir so
there will be a positive head on the suction at
all times. Where this is not possible, the pump
should be located as near the source of supply
as possible. Allow ample room for inspection
and maintenance. Baseplate mounted pumps
are usually grouted on a concrete foundation
that has been poured on a solid footing. The
foundation should be of heavy construction to

8
LEVEL BASEPLATE
reduce vibration and must be rigid enough to
resist the torque it may be subjected to. The
foundation should be 2” to 6” larger than the
base, depending on the size of the base. A
space of approximately 2” should be left be-
tween the foundation and the bottom of the
base for grouting. Use a pipe sleeved bolt (Fig.
3) to within 1/2” of the base for a foundation
bolt.
Fab. Steel
It should be noted at this time that SPECIAL
CARE must be taken when leveling your pump
for alignment, it is of the utmost importance.
Once the pump is set the only means of adjust-
ing is by shimming.
1. Place 12 wedges on the foundation, one
wedge on each side of every mounting bolt.
Place wedges so that baseplate is 3/4”
above foundation to allow for adequate
grouting (Fig. 4).
2. Carefully lower the baseplate onto mount-
ing bolts.
3. Level baseplate to within 1/8” over the
length and to within .088 in. over the width
by adjusting the wedges.
4. Hand tighten bolts.

9
1. Coat all jack screws with an anti-seizing
compound to allow for easy removal after
the grout has cured.
2. Cut 6 round plates from barstock to set the
jack screws on. Chamfering the edges of
the plate is recommended to reduce stress
concentrations.
3. Set the baseplate on the foundation, then
raise it 3/4” to 1 1/2” using the four corner
jack screws. At this time, the two center
jack screws should not be touching the
foundation.
4. Place one machinist level lengthwise on a
single motor pad, and another across the
ends of both motor pads. (It is important
that the surface being leveled is free of all
contaminants, such as dust, to ensure that
your reading is accurate.)
5. Adjust the four jack screws in order to level
the motor pads to zero in both directions.
6. Turn down the center jack screws until they
are resting on their metal plates.
7. Move the two levels to the pump pads.
Place one level lengthwise on a single pad,
and the other across the middle of both
pump pads.
8. Adjust the jack screws to level the pump
pads in both directions.
9. Install the anchor bolts until they are hand
tight.
10. Recheck the motor pads for level measure-
ments.
11. Continue adjusting the jackscrews and an-
chor bolts until all level measurements are
within the requirement of 0.002 on in./ft.
COUPLING ALIGNMENT PROCEDURE
! WARNING !
Before starting any alignment procedure,
ensure that the motor power is locked
out. Failure to do this will result in serious
physical injury.
For trouble-free operation of this unit, proper
alignment must be attained. Proper alignment
is the responsibility of the installer and user of
this pump.
Alignment Checks
Initial Alignment (Cold Alignment)
• Before grouting baseplate to make certain
alignment can be obtained
• After grouting baseplate to make sure no
changes have occurred.
• After connecting piping to ensure that align-
ment hasn’t been altered by pipe strain. If
alignment has changed alter piping to re-
move strain.
Final Alignment (Hot Alignment)
• After first run to obtain correct alignment
when equipment is at operating tempera-
ture.

10
Alignment Criteria
Good alignment is achieved when the differenc-
es between the readings is .010 or less when
the pump is at operating temperature. How-
ever, during the installation phase it is neces-
sary to set the parallel alignment in the vertical
direction to a different criteria. This is due to the
differences in the expansion rates of the pump
and the motor. The recommended cold settings
for electric motor driven pumps is shown in Ta-
ble 1.
Angular Alignment
Check angular alignment with a micrometer or
caliper. Measure from the outside of one flange
to the outside of the other flange at intervals
around the periphery of the coupling, DO NOT
rotate the coupling. The difference between the
maximum and the minimum must not exceed
.010”.
Parallel Alignment
Check parallel alignment by placing a straight
edge across the two coupling flanges and mea-
sure the offset at various points around the
periphery of the coupling. DO NOT rotate the
coupling. If offset exceeds .010” realign the
coupling.
If a correction is necessary to either the angular
or parallel alignment, remember to recheck the
other for proper alignment.
TABLE 1
COLD SETTING OF PARALLEL
VERTICAL ALIGNMENT
Pumpage Temperature Set Driver Shaft
50OF (10OC) .002 in. Low
150OF (65OC) .001 in. High
250OF (120OC) .005 in. High
350OF (175OC) .009 in. High
450OF (218OC) .013 in. High
550OF (228OC) .017 in. High
650OF (343OC) .021 in. High
700OF (371OC) .023 in. High
ALIGNMENT TROUBLESHOOTING
Problem Probable Cause Solution
Cannot obtain horizontal
alignment, angular of parallel
The bolts holding the
driver feet are bound.
Loosen pump hold down bolts and slide pump
and driver until horizontal alignment is achieved.
Baseplate not leveled
properly, probably twisted.
Determine which corner(s) of baseplate are
high or low and adjust properly, then realign.
Baseplate not leveled
properly, probably bowed.
Determine if center of baseplate should be
raised or lowered, and adjust properly.
Cannot obtain vertical
alignment, angular or parallel

11
PIPING
1. Clean the areas on the baseplate that will
contact grout. Do not use oil-based clean-
ers because the grout will not bond to it.
2. Build a form around the base as illustrated
in Fig. 5. Then thoroughly wet the founda-
tion.
3. Pour grout into form being sure that it flows
under the base. Fill to within 3/4” to 1” from
the bottom of the base.
4. Allow grout to set for 48 hours.
5. Recheck coupling alignment, make any ad-
justments that may be necessary and tight-
en foundation bolts securely.
Guidelines for piping are given in the “Hydraulic
Institute Standards” available from the Hydrau-
lic Institute, 30200 Detroit Road, Cleveland, OH
44145-1967 and must be reviewed before in-
stalling pump.
Never force piping into position by pulling
it in place with the pump suction and dis-
charge flange bolts. This will cause mis-
alignment between pump and driver which
will adversely effect the operation of the
unit resulting in physical injury and dam-
age to the equipment.
! WARNING !
1. All piping must be supported independently
of the pump.
GROUT BASEPLATE

2. Before connecting the piping to the pump,
ensure that grout has hardened and the
foundation bolts have been tightened.
3. When handling liquids at high temperatures,
it is recommended that expansion loops or
joints be properly installed in suction and/or
discharge lines so that linear expansion of
piping will not draw pump out of alignment.
4. On pumps handling corrosive liquids, the
piping should be arranged to allow for flush-
ing prior to removal.
5. Clean all pipe parts prior to installation.
Suction Piping
Properly installed suction piping is necessary
for trouble-free pump operation. Flush suction
piping before connection to the pump.
1. Never place a pipe line elbow in the horizon-
tal plane directly at the pump suction. Use a
straight pipe four to six pipe diameters long
between the elbow and the pump suction.
2. Use suction pipe one or two sizes larger
than the pump suction, with an eccentric
reducer, sloping side down, at the suction
flange (Fig. 7). Suction piping should never
be smaller than the pump suction.
3. Never throttle pump on the suction side, al-
ways control flow by throttling on the dis-
charge side of the pump.
12
NPSHAmust always exceed NPSHRas
shown on Gusher performance curves.
Reference Hydraulic Institute for NPSH
and pipe friction values needed to evalu-
ate suction piping.
! WARNING !
4. When using a strainer on the suction, install
it as close to the pump as possible and se-
lect a strainer with a net area of at least four
times that of the suction pipe.
5. Whenever possible the end of the suction
should be a minimum of 3’ below the liquid
level (Fig 6). The liquid near the pump suc-
tion should be free from agitation to prevent
air entering the suction line.
6. Liquid coming back into the reservoir should
not enter near the pump suction pipe, and
the liquid should not drop from a high level
(Fig. 6).
7. If a foot valve is not used in the suction line,
it is good practice to bell out the suction
pipe to lower the entrance velocities at the
inlet (Fig. 6).
Suction Lift Conditions
1. Pipe must be free from air pockets.
2. Pipe must slope upwards to pump.
3. All connections must be air tight.

13
4. Whenever possible avoid dynamic suction
lifts of more than 15’.
5. A means of priming the pump must be pro-
vided.
Suction Head/Suction Conditions
1. An isolation valve should be installed in the
suction pipe at least four diameters from the
suction to allow closing of the line for pump
inspection and maintenance.
2. Pipe must be free from air pockets.
3. Piping should be level or slope gradually
downward from the source.
4. No part of the piping should extend below
pump suction flange.
5. The size of the entrance from the supply
should be one or two sizes larger than the
pipe.
6. To prevent vortices and air entrainment at
the supply, the entrance from the supply
must be adequately submerged below the
liquid surface.
Discharge Piping
1. A gate valve and check valve should be in-
stalled in the discharge line. The check valve
should be installed between the gate valve
and the pump (Fig 7) this will allow for in-
spection of the check valve. The gate valve is
required for priming, flow regulation, and for
maintenance of the pump. The check valve
is required to prevent pump or seal damage
from reverse flow through the pump when
the motor is turned off.
2. Discharge pipe increasers should be con-
nected between the pump and the check
valve (Fig.7).
3. If quick closing valves are installed in the
system, cushioning devices should also be
installed to protect the pump from surges
and water hammer.
Final Piping Check
After all piping connections have been made to
the pump:
1. Rotate the shaft by hand to ensure that there
is no binding and all parts are free.
2. Recheck pump alignment to detect any pipe
strain, if pipe strain exists correct piping.

TABLE 2
IMPELLER CLEARANCES
Cold Temperature Clearances For
Various Service Temperatures
Service Temperature Clearance
Up to 200OF (93OC) .010” - .015”
200OF to 250OF (121OC) .012” - .017”
250OF to 300OF (149OC) .014” - .019”
300OF to 350OF (177OC) .016” - .021”
350OF to 400OF (204OC) .018” - .023”
Over 400OF (204OC) .020” - .025”
14
OPERATION
PREPARATION FOR START-UP ......................................................................................................... 15
CHECK ROTATION........................................................................................................................ 15
CHECK IMPELLER CLEARANCE ................................................................................................. 15
COUPLE PUMP AND MOTOR ...................................................................................................... 16
PRIME PUMP ................................................................................................................................ 16
INITIAL STARTING.............................................................................................................................. 17
OPERATION ....................................................................................................................................... 17
FINAL ALIGNMENT ............................................................................................................................ 17
PREPARATION FOR START-UP
Check Rotation
1. Wire motor according to motor manufac-
ture’s specifications and according to state
and local regulations.
2. Lock out power to driver
3. Disconnect motor/pump shaft coupling to
prevent dry operation of the pump and re-
verse rotation.
4. Make sure everyone is clear. Jog motor
starter, pump must rotate clockwise when
viewing from the driving end looking over
the motor. Direction arrows are cast in im-
peller housings.
Check Impeller Clearance
Before starting pump the impeller clearance
must be checked. The pump efficiency is main-
tained when the proper impeller clearance is
set. When pumping liquids under 200OF (93OC),
the impeller front clearance for the S, M, and L
is between .010” and .015”. If the impeller front
clearance is not set between the above values
significant performance degradation will result.
When pumping liquids above 200OF (93OC) the
front impeller clearance when cold must be set
per Table 2. This is necessary to allow for dif-
ferential expansion due to the higher operating
temperature. See the Maintenance section for
correct impeller adjustment procedure.
Operating pump dry will cause damage to
mechanical seal and may cause rotating
parts to seize.
! WARNING !

15
Couple Pump and Motor
1. Lock out power to motor to prevent acci-
dental rotation and physical injury.
2. Install and lubricate coupling per manufac-
turer’s instructions.
3. Install coupling guard (see Appendix 3 Cou-
pling Guard Installation instructions).
Prime Pump
No centrifugal pump will operate satisfactorily
until it has been properly primed. Do not at-
tempt to prime pump when operating and DO
NOT under any circumstances operate the
pump without being completely primed. Some
of the most common methods of priming are
flooded suction, foot valve in suction line, ejec-
tor (steam, water, or air operated), and vacuum
pump.
With flooded suction:
1. Slowly open the gate valve in the suction
line.
2. Remove the air vent in the top of the pump
casing to release entrained air.
3. Close the air vent once liquid starts to flow
out of it.
With foot valve in suction line:
1. Open air vent on pump casing.
2. The pump and suction line must be filled with
the liquid being pumped. It is recommended
to fill the discharge pipe several feet above
the pump discharge.
3. After filling pipe and pump close air vent.
4. The pump will remain primed unless the foot
valve leaks or if the liquid is contaminated
and does not allow foot valve to close tight.
With an ejector:
1. Mount ejector at the highest point in the im-
peller housing to ensure removal of all the air
in the casing and suction pipe.
2. Operate ejector with gate valve in discharge
line closed.
3. Operate until ejector discharges a full steady
flow of liquid.
4. On pumps using packing it may be neces-
sary to tighten packing gland to prevent
pulling of air through shaft clearances. Af-
ter pump is primed properly loosen gland
to achieve a slight trickle of liquid through
stuffing box.
With a vacuum pump:
1. Mount vacuum pump at the highest point in
the impeller housing to ensure removal of all
the air in the casing and suction pipe.
2. Gate valve in discharge line must be
closed.
3. After pump is primed, valves between
vacuum pump and Gusher pump must be
closed.
4. On pumps using packing it may be neces-
sary to tighten packing gland to prevent
pulling of air through shaft clearances. Af-
ter pump is primed properly loosen gland
to achieve a slight trickle of liquid through
stuffing box.
Never operate a pump without the coupling
guard properly installed. Personal injury
can occur if pump is run without coupling
guard.
! WARNING !

16
DO NOT operate pump below minimum
rated flows or with suction or discharge
valves closed. These conditions could cre-
ate an explosive hazard due to vaporiza-
tion or pumpage and can quickly lead to
pump failure and physical injury.
! WARNING !
INITIAL STARTING
OPERATION
FINAL ALIGNMENT
1. The gate valve in the discharge line should
be closed and gradually opened as the
motor reaches full speed (approximately 5
to 10 seconds). After the pump has been
in operation and the suction and discharge
lines are filled with liquid, it is not necessary
to close the gate valve when starting.
2. Start motor and immediately observe pres-
sure gauges. If discharge pressure is not
quickly attained stop pump, reprime, and
attempt to restart.
3. If your pump is packed, loosen packing
gland screws to allow free leakage. Then
tighten screws uniformly on packing gland
until leakage is reduced to approximately
30 drops per minute. Never tighten packing
enough to stop all leakage, a slight leakage
is required to lubricate packing and prevent
scoring of shaft sleeve.
4. Check pump for vibration levels, bearing
temperature, and excessive noise. If normal
levels are exceeded, shut down and investi-
gate.
Always vary the capacity with gate valve in the
discharge line. Never restrict intake flow.
If the specific gravity of liquid being pumped is
greater than originally assumed or if the rated
flow is exceeded, the motor may overload.
To prevent damage from cavitation or recircula-
tion, always operate pump at or near the rated
conditions.
Drain all liquid from inside pump if it will be
exposed to freezing conditions while idle. The
conditions could cause liquid to freeze and
damage the pump. Liquid inside cooling coils,
if supplied, should also be drained.
1. Run the unit under actual operating condi-
tions long enough for the pump and motor
to reach operating temperature.
2. Check alignment while unit is still hot.
3. Make any necessary adjustments and rein-
stall the coupling guards.

TABLE 3
OIL CAPACITY
Frame Pints
S .55 Approx.
M 1.25 Approx.
L 3 Approx.
17
MAINTENANCE
BEARINGS ......................................................................................................................................... 18
OIL LUBRICATED........................................................................................................................ 18
GREASE LUBRICATED ............................................................................................................... 18
COUPLING ALIGNMENT ................................................................................................................... 19
SHAFT SEALS.................................................................................................................................... 19
PACKED PUMPS ........................................................................................................................ 19
MECHANICAL SEALS................................................................................................................. 20
SETTING IMPELLER CLEARANCE .................................................................................................... 21
TROUBLESHOOTING ........................................................................................................................ 22
BEARINGS
All pumps are lubricated at the Gusher plant
and should not require additional lubrication for
approximately 1200 hours of operation. A well
planned maintenance schedule can only be de-
vised after the first six months of operation and
the lubrication record review at that time. Each
pump installation is unique and requires indi-
vidual attention to set up the proper lubrication
schedule for each specific installation. About
once every year it is recommended that the
bearings be cleaned and flushed with carbon
tetrachloride and then relubricated.
Oil Lubricated
A high quality turbine oil with rust and oxida-
tion inhibitors, such as Mobil DTE 26 (300 SSU)
or its equivalent, should be used. Fill bearing
frame with oil until level is at the center of the
sight glass.
Grease Lubricated
1. When regreasing ensure the grease contain-
er, greasing device, and the grease fittings
are clean to prevent impurities from entering
the bearing housing.
2. Remove the 2 grease relief plugs from the
bottom of the bearing frame.
3. Fill both grease cavities with Chevron SRI #2
or equivalent until fresh grease comes out of
relief holes.
4. Reinstall the grease relief plugs.
5. Check the frame seals to ensure they are
seated in the bearing housing. If not, press
into place with drains located at the bottom.
The bearing temperature will usually rise after
regreasing due to an excess of grease. Tem-
peratures should return to normal after the
pump has purged the excess grease. Never mix
greases of different consistency or thickener. If
it is necessary to change, remove all of the old
grease from the housing.

18
COUPLING ALIGNMENT
SHAFT SEALS
Coupling alignment must be checked before
and after initial startup, after 300 hours of oper-
ation, and again after 1200 hours of operation.
Follow procedures given in the Installation sec-
tion. Again, we strongly recommend setting up
and following a routine maintenance program
to ensure optimum life from your pump.
Packed Pumps
DO NOT STOP LEAKAGE! Packed glands
drawn up too tight increases power consump-
tion, increases wear on shaft, and shortens life
of packing. When leakage can no longer be
controlled by drawing up on the packing gland
add another ring of packing to the stuffing box.
After further operation and leakage again can
no longer be controlled replace the packing by
using the following procedure:
1. Remove all old packing from the stuffing
box. Clean box and shaft sleeve thoroughly
and examine for wear. Replace shaft sleeve
if wear is excessive. Check bearing by lifting
shaft up and down; do not expect packing
to act as a bearing.
2. Use the right cross section of packing,
Gusher uses Non-Asbestos packing as our
standard for general purpose applications.
Packing for special applications available,
consult factory.
3. When using coil or spiral packing always cut
the packing into separate rings. Never wind
a coil of packing into a stuffing box. Rings
can either be cut with butt (square) joint or
diagonal joints. (Fig. 8) The best way to cut
packing is on a mandrel the same diameter
as the shaft sleeve. Hold the coil packing
tightly and firmly on the mandrel but do not
stretch excessively. Cut the ring and try it in
the stuffing box to make certain it fills the
packing space properly with no gap in the
joint at the O.D. of the ring. It is necessary
that the rings be cut to the correct size, oth-
erwise service life is reduced.
4. Install one ring at a time. Make sure it is clean
and has not picked up any dirt in handling.
If clean oil is available, lubricate the shaft
and inside of the stuffing box. Seat rings
firmly. (Except for TFE filament and graphite

19
yarn packings which should be snugged up
very gently. Then wrench in gradually.. .af-
ter the pump is back in operation.) Joints of
successive rings should be staggered and
kept at least 90Oapart. Each individual ring
should be firmly seated with a tamping tool.
When enough rings have been individually
seated so the nose of the gland will reach
them, individual tamping should be supple-
mented by the gland. Never depend entirely
on the gland to seat a set of rings properly-
this practice will jam the last rings installed,
but leave the bottom rings loose in the box.
5. After the last ring is installed, take up bolts
finger tight or very slightly snugged up. Do
not jam the packing into place by excessive
gland loading. Start pump, and take up bolts
until leakage is decreased to a minimum.
Make sure gland bolts are taken up evenly,
stopping leakage entirely at this point will
cause packing to burn up.
6. Allow packing to leak freely when starting
up a newly packed pump. Excessive leak-
age during the first hour of operation will
result in a better packing job over a longer
period of time. Final adjustment should al-
low approximately 30 drops per minute to
leak from the packing.
7. When specified, Gusher can provide means
of lubricating the shaft and packing through
a lantern ring by supplying water, oil, grease,
or liquid handled in the pump.
8. If the stuffing box has a lantern ring, make
sure the lantern ring, as installed, is slightly
behind the fluid inlet as gland pressure is
applied. (Fig 9)
9. Replace packing when leakage cannot be
controlled by further take up on the gland.
Some of the most common reasons for packing
failure are:
• Improper installation
• Uneven gland adjustment
• Shaft misalignment and shaft whip
• Improper selection of packing for liquid
• Improper selection for pressure and temper-
ature
• Contaminated liquid (dirt, abrasives, etc.)
• Operation without fluid
Mechanical Seal
The most important factor in the mechanical
seal, other than the sealing qualities, is the fact
that once it has been properly installed there is
little or no maintenance required. Some of the
most common reasons for seal failure are:
• Improper installation
• Shaft misalignment and shaft whip
• Wrong selection for liquid pumped
• Dirt or grit between faces
• Seal gland tightened unevenly so stationary
seat is not perpendicular to shaft
• Operation without fluid
The life of a mechanical seal depends on vari-
ous factors such as cleanliness and lubricating
properties of liquid being pumped. Due to the
diversity of operating conditions it is not pos-
sible to give definite indications to its life.

20
SETTING IMPELLER CLEARANCE
Lock out motor power to prevent acciden-
tal startup and physical injury.
! WARNING !
Over time a change in pump performance may
be noticed. Performance can usually be re-
newed by resetting the impeller clearance.
Using a dial indicator (Fig. 10):
1. Remove coupling guards (see Appendix 3)
and coupling.
2. Set the indicator so that the button on the
dial is against the end of the shaft or the face
of the coupling.
3. Loosen the jamb nuts and back out the ad-
justing screws about two turns.
4. Tighten the locking screws evenly until the
front of the impeller bottoms on the impeller
housing.
5. Tighten the adjusting screws by hand until
they touch the bearing frame.
6. Set the indicator to zero and loosen locking
screws about one turn.
7. Tighten the adjusting screws evenly, back-
ing the impeller away from the housing until
the indicator shows the required clearance.
8. Tighten the locking screws and jamb nuts
evenly, being sure to maintain the proper
clearance.
9. Check shaft for free turning, then reinstall
coupling and guards.
Using a feeler gauge:
1. Remove coupling guards (see Appendix 3)
and coupling.
2. Loosen the jamb nuts and back out the ad-
justing screws about two turns.
3. Tighten the locking screws evenly until the
front of the impeller bottoms on the impeller
housing.
4. Using a feeler gauge, set the distance be-
tween the locking screws and the bearing
housing to the required clearance.
5. Tighten the adjusting screws evenly until
the bearing housing contacts the locking
screws. Tighten the jamb nuts.
6. Check shaft for free turning, then reinstall
coupling and guards.