Installation, Operation and
Maintenance Instructions
G&L STAINLESS STEEL
Centrifugal Pump
Model SST-C and
Model SST-F
I. Important:
A. Inspect unit for damage. Report damage to carrier
immediately.
B. Electrical supply must be a separate branch circuit with fuses
or circuit breakers, wire sizes, etc., per National and Local
electrical codes. Install an all-leg disconnect switch near
pump. Caution: Always disconnect electrical power when
handling pump or controls.
C. Motors must be wired for proper voltage (check nameplate).
Wire size must limit maximum voltage drop to 10% of
nameplate voltage at motor terminals, or motor life and
pump performance will be lowered.
D. Single-Phase: Thermal protection for single-phase units is
sometimes built-in (Check nameplate). If no built-in protection is provided, use a contactor with proper overload.
Fusing is permissible if properly fused.
E. Three-Phase: Provide three-leg protection with proper
size magnetic starter and thermal overloads.
F. Maximum Liquid Temperatures:
212ºF (100º C) with standard seal.
250ºF (120º C) with optional high-temperature seal.
G. Maximum allowable operating pressure: 175 PSI.
H. Maximum Number of Starts per Hour: 20, evenly distributed.
I. Regular Inspection and Maintenance will increase service
life. Base schedule on operating time.
F. For frame-mounted pumps, permanent and solid foundation
is required for smooth operation. Bedplate must be grouted
to a foundation with solid footing.
G. Place unit in position on wedges located at four points
(Two below approximate center of driver and two below
approximate center of pump). Adjust wedges to level
unit, bringing coupling halves into reasonable alignment.
Level or plumb suction and discharge flanges.
H. Make sure bedplate is not distorted and final coupling
alignment can be made within the limits of movement of
motor and by shimming if necessary.
I. Tighten foundation bolts finger tight and build dam around
foundation. Pour grout under bedplate making sure the
areas under pump and motor feet are filled solid. Allow
grout to harden 48 hours before further tightening
foundation bolts.
J. All piping must be supported independently of the pump,
and must “line-up” naturally. Never draw piping into place
by forcing the pump suction and discharge connections!
K. Angular alignment of the flanges can best be accomplished
using calipers at bolt locations (See illustration).
II. Installation:
A. Close-coupled units may be installed inclined or vertical.
Caution: Do not install with motor below pump. Condensa-
tion will build up in motor.
B. Locate pump as near liquid source as possible (Below level
of liquid for automatic operation).
C. Protect from freezing or floods.
D. Allow adequate space for servicing and ventilation.
E. For close-coupled pumps, the foundation must be flat and
substantial to eliminate strain when tightening bolts. Use
rubber mounts to minimize noise and vibration. Tighten
motor hold-down bolts before connecting piping to pump.
IM014R01
L. On frame-mounted units, tighten foundation, pump and
driver hold-down bolts before connecting piping to pump.
M.Avoid unnecessary fittings. Select sizes to keep friction
losses low.
N. After completing piping, rotate unit by hand to check for
binding. (Note: A screwdriver slot or flats are provided in end
of motor shaft.)
III. Alignment:
A. No field alignment is necessary on close-coupled pumps.
B. Even though the pump-motor unit may have a factory
alignment, in transit this alignment could be disturbed and
must be checked prior to running.
C. Check the tightness of all hold-down bolts before checking
the alignment.
D. If re-alignment is necessary, always move the motor. Shim
as required.
E. Final alignment is achieved when parallel and angular
requirements are achieved with both pump and motor holddown bolts tight. Caution: Always recheck both alignments
after making adjustments.
F. Parallel misalignment exists when the shafts are not concen-
tric. Place dial indicator on one hub and rotate this hub 360º
while taking readings on the outside diameter of the other
hub. Parallel alignment occurs when Total Indicator Reading
is .005" or less.
G. Angular misalignment exists when the shafts are not parallel.
Place dial indicator on one hub and rotate this hub 360º
while taking readings on the face of the other hub. Angular
alignment is achieved when Total Indicator Reading is .005"
or less.
VI. Rotation:
A. Pumps are right-hand rotation (Clockwise when viewed from
the driver end). Switch power on and off. Observe shaft
rotation. On frame-mounted units, check rotation before
coupling pump to motor.
B. Single-Phase: Refer to wiring diagram on motor if rotation
must be changed.
C. Three-Phase: Interchange any two power supply leads to
change rotation.
VII. Operation:
A. Before starting, pump must be primed (free of air and
suction pipe full of liquid) and discharge valve partially open.
Caution: Pumped liquid provides lubrication. If pump is run
dry, rotating parts will seize and mechanical seal will be
damaged.
B. Make complete check after unit is run under operating
conditions and temperature has stabilized. Check for
expansion of piping. Check coupling alignment.
C. Do not operate at or near zero flow. Energy imparted to
the liquid is converted into heat. Liquid may flash to vapor.
Rotating parts require liquid to prevent scoring or seizing.
IV. Suction Piping:
A. Low static lift and short, direct suction piping is desired. For
suction lift over 15 feet, consult pump performance curve for
Net Positive Suction Head Required.
B. Suction pipe size must be at least equal to suction connec-
tion of pump.
C. If larger pipe is used, an eccentric pipe reducer (with straight
side up) must be used at the pump.
D. Installation with pump below source of supply:
1. Install isolation valve in piping for inspection and
maintenance.
2. Do not use suction isolation valve to throttle pump!
E. Installation with pump above source of supply:
1. To avoid air pockets, no part of piping should be higher
than pump suction connection. Slope piping upwards
from liquid source.
2. All joints must be airtight.
3. Foot valve to be used only if necessary for priming, or to
hold prime on intermittent service.
4. Suction strainer open area must be at least triple the
pipe area.
F. Size of inlet from liquid source, and minimum submergence
over inlet, must be sufficient to prevent air entering pump.
V. Discharge Piping:
A. Arrangement must include a check valve located between a
gate valve and the pump. The gate valve is for regulation of
capacity, or inspection of pump or check valve.
B. If reducer is required, place between check valve and pump.
2
VIII. Maintenance:
A. Bearings are located in and are part of the motor. For
lubrication procedure, refer to manufacturer’s instructions.
B. On frame-mounted units, regrease at 2,000 hours use or 3
months. Use #2 Sodium or Lithium grease and fill until
grease comes out of the relief fitting.
IX. Disassembly:
A. Turn power off.
B. Drain system. Flush if necessary.
C. Remove motor hold-down bolts on close-coupled or
disconnect coupling and remove spacer.
D. Remove casing bolts and pump hold-down bolts.
E. Remove motor and rotating element from casing.
F. Unscrew impeller bolt with a socket wrench. Do not insert
screwdriver between impeller vanes to prevent rotation.
It may be necessary to use a strap wrench around the
impeller if impacting the socket wrench will not loosen the
impeller bolt.
G. Remove impeller washer.
H. Insert two pry bars (180º apart) between impeller and seal
housing. Pry off impeller.
I. Remove seal spring, cupwasher and impeller key.
J. Remove seal housing, pulling with it the rotating seal parts.
(Pry bar slots provided where necessary.)
K. Place seal housing on flat surface. Press out stationary
seal parts.
L. Remove deflector from shaft on frame-mounted units.
M.Remove bolts holding bearing cover to frame and remove
bearing cover (frame-mount).
N. Remove lip seals from bearing frame and bearing cover
(frame-mount).
O. Remove shaft and bearings from frame (frame-mount).
P. Straighten tang in lockwasher. Remove locknut and
lockwasher (frame-mount).
Q. Use bearing puller or arbor press to remove ball bearings
(frame-mount).
R. Remove shaft sleeve if badly scored. Shaft sleeve is bonded
to the shaft and must be heated to about 250ºF to facilitate
removal.
S. Remove wear ring if excessively worn. Use pry bar and/or
vicegrips.
X. Reassembly:
A. All parts should be cleaned before assembly.
B. Refer to parts list to identify required replacement items.
C. Reassembly is the reverse of the disassembly procedure.
D. Replace lip seals if worn or damaged (frame-mount).
E. Replace ball bearings if loose, rough or noisy when rotated
(frame-mount).
F. Check shaft for maximum runout of .005" TIR. Bearing seats
and lip seal areas must be smooth and free of scratches or
grooves. Replace if necessary (frame-mount).
G. Shaft sleeve surface must be smooth. Spray both shaft
sleeve fit and bore with LOCQUIC PRIMER “T” (Locktite
product Item No. 74756). Let parts dry and then apply
Loctite #271 on same surfaces. Slide shaft sleeve over shaft,
twisting back and forth a couple of times. Wipe off excess.
Let cure according to instructions. Purchase Loctite products
at Auto Parts or Hardware store.
H. All mechanical seal components must be in good condition
or leakage may result. Replacement of complete seal assembly, whenever seal has been removed, is good
standard practice.
I. If wear ring is being replaced, use no lubricants on the
metal-to-metal fit when pressing in the replacement.
J. If the impeller is removed, as for example to effect a me-
chanical seal change, this procedure must be followed: Old
impeller bolt and impeller gaskets cannot be re-used.
K. With the stationary and rotary part of the mechanical seal
and impeller gasket (hub to sleeve) properly installed, mount
the impeller on the shaft but do not install the mechanical
seal spring and the retainer as yet. With the impeller bottomed on the shaft sleeve note the distance of the shaft end
to the face of the impeller hub on the inlet side. Remove the
impeller from the shaft.
L. Install the mechanical seal spring retainer to the spring.
Retainer should snap in place evenly. Install spring/retainer
assembly on the shaft and mechanical seal with free-end of
spring toward the mechanical seal.
M.Install key in shaft keyway and mount impeller on shaft with
the spring fairly well centered. Push impeller until it bottoms,
hold in position and note shaft end to impeller hub face
distance. It should match that obtained in step 2. If greater
than in step 2, there is a strong possibility that the retainer is
pinched between the impeller and sleeve. This is not correct
and the process must be repeated until the correct distance
is obtained.
N. Hold the impeller in place and install the impeller gasket
(hub to washer) and the previously prepared impeller bolt
and washer assembly. Tighten bolt to 35 lb.-ft.
XI. Trouble-Shooting:
A. Motor does not start, and no noise or vibration occurs:
1. Power supply not connected.
2. Fuses or protection device tripped or defective.
3. Loose or broken electrical connections.
B. Motor will not start, but generates noise and vibration:
1. Motor not wired as directed on diagram.
2. Shaft locked due to mechanical obstructions in motor
or pump.
3. Low voltage or phase loss on three phase supply.
C. Pump does not deliver rated capacity:
1. Pump not filled and primed.
2. Pump has lost prime due to leaks in suction line.
3. Direction of rotation incorrect. See Rotation.
4. Head required is higher than that originally specified.
(Valve may be partially closed.)
5. Foot valve clogged.
6. Suction lift too high.
7. Suction pipe diameter too small.
D. Protection trips as unit starts:
1. Phase loss on three-phase supply.
2. Protection device may be defective.
3. Loose or broken electrical connections.
4. Check motor resistance and insulation to ground.
E. Protection device trips too often:
1. Protection may be set to a value lower than motor full
load.
2. Phase loss due to faulty contacts or supply cable.
3. Liquid is viscous or its specific gravity is too high.
4. Rubbing occurs between rotating and stationary parts.
F. Shaft spins with difficulty:
1. Check for obstructions in the motor or the pump.
2. Rubbing occurs between rotating and stationary parts.
3. Check bearings for proper conditions.
G. Pump vibrates, runs noisily, and flow rate is uneven:
1. Pump runs beyond rated capacity.
2. Pump or piping not properly secured.
3. Suction lift too high.
4. Suction pipe diameter too small.
5. Cavitation caused by insufficient liquid supply or
excessive suction losses.
6. Impeller blockage.
H. When stopped, unit turns slowly in the reverse direction:
1. Leaks on air locks in suction pipe.
2. Partial blockage in check valve.
I. In pressure boosting applications, the unit starts and
stops too often:
1. Pressure switch settings are incorrect.
2. Tank size may be incorrect.
J. In pressure boosting applications, the unit does not stop:
1. Pressure switch maximum setting is higher than
was specified.
2. Direction of rotation incorrect. See Rotation.
3
SST-C Components
OPTIONAL MECHANICAL SEALS
John Crane Type 21 Mechanical Seals
Part Metal
Item Rotary Stationary Elastomers Intended Duty
No. Parts
10K19 Ni-Resist EPR Hi-Temperature
383
10K25 Ni-Resist Viton Chemical
10K27
Carbon
Tungsten Hi-Temperature
Carbide Mild Abrasive
EPR
Options
316
S.S.
SST-F Components
OPTIONAL MECHANICAL SEALS
John Crane Type 21 Mechanical Seals
Part Metal
Item Rotary Stationary Elastomers Intended Duty
No. Parts
10K19 Ni-Resist EPR Hi-Temperature
383
10K25 Ni-Resist Viton Chemical
10K27
Carbon
Tungsten Hi-Temperature
Carbide Mild Abrasive
EPR
Options
316
S.S.
MATERIALS OF CONSTRUCTION
Item Description Material
100 Casing
101 Impeller
103 Wear Ring
184 Seal Housing
126 Shaft Sleeve AISI TYPE 300
178 Impeller Key Stainless Steel
198 Impeller Bolt
199 Impeller Washer
370 Socket Head Cap Screw
108 Adapter Cast Iron ASTM A48CL20
371
513 O—Ring Buna—N
408 Drain Plug — 3⁄8 NPT AISI TYPE 304 S/S
383
(Casing to Adapter)
Hex Head Cap Screw
(Adapter to Motor)
Mechanical Seal
Part No. 10K13
Steel SAE 1200 Series
Carbon/Ceramic
Buna Elastomers
300 S/S Metal Parts
MOTOR DATA
MOTOR HORSEPOWER
Motor
Frame
143 2 — — 1 — 1 — 1 44
145 3 2 3 2 2 2 2 2 57
182 3 — 5 3 2 2 3 3 76
184 5 3 71⁄
213 — 5 10 71⁄
215 — — 15 10 — — — — 170
*254S — — 20 15 — — — — 253
*256S — — 25 20 — — — — 305
*254 frame with 215JM shaft extension
3500 RPM 1750 RPM
1ø 3ø 1ø 3ø
ODP TEFC ODP TEFC ODP TEFC ODP TEFC
2
5335592
2
5 5 — — 144
MATERIALS OF CONSTRUCTION
Item Description Material
100 Casing
101 Impeller
103 Wear Ring
184 Seal Housing
126 Shaft Sleeve AISI TYPE 300
178 Impeller Key Stainless Steel
198 Impeller Bolt
199 Impeller Washer
370 Socket Head Cap Screw
408 Drain plug - 3/8 NPT
513 O-Ring Buna N
Pump End Components
383
108 Adapter
228 Bearing Frame Cast Iron ASTM A48 CL20
134 Bearing Cover
122 Pump Shaft
168 Ball Bearing (Inboard)
112 Ball Bearing (Outboard)
136 Locknut, Bearing
382 Lock Washer, Bearing Steel ASTM A108/
370B Hex Head Cap Screw SAE 1200 Series
370C Hex Head Cap Screw
Power End Components
333A Lip Seal Buna N
193 Grease Fitting Steel
123 V-Ring Deflector Buna N
Mechanical Seal Carbon/Ceramic
Standard Part Buna N Elastomers
No. 10K13 300 S/S Metal Parts
(Adapter to Bearing Frame)
(Bearing Frame to Cover)
Wt.
Max.
(lbs.)
©1999 Goulds Pumps
Printed in U.S.A.
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