GE OSMONICS TONKAFLO SS Series User manual

OSMONICS
TONKAFLOPUMPS
SS SERIES
INSTALLATION, OPERATION, AND
MAINTENANCE MANUAL
For SS5500, SS8500, SS12500, SS23000,
and SS24000 Series High-Pressure
Tonkaflo Centrifugal Pumps
with E-Bearing Frames
GE Infrastructure
Water & Process Technologies

INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
FOR SS5500, SS8500, SS12500, AND
SS24000 HIGH-PRESSURE TONKAFLO
CENTRIFUGAL PUMPS WITH
TYPE E-BEARING FRAME
TABLE OF CONTENTS
Page
1.0 INTRODUCTION 1
2.0 TONKAFLO SPECIFICATIONS 2
2.1 Capacities 2
2.2 Maximum Developed Boost Pressure for Standard Model
Pumps (350 RPM) 3
2.3 Maximum Recommended Operating Temperature 3
2.4 Standard Materials of Construction 3
2.5 Special Materials of Construction 4
2.6 Pump Nomenclature 4
2.7 Special Liquids 4
3.0 PUMP INSTALLATION 5
3.1 Check Upon Arrival 5
3.2 Location 5
3.3 Foundation 5
3.4 Bedplate Installation 6
3.5 Motor, Pump, and Coupling Alignment 7
3.6 Coupling Guard 9
3.7 Piping 9
3.8 Bypass Piping for Multi-Stage Pumps 10
3.9 Suction Screen (Strainer) 11
3.10 Discharge Screen (Strainer) 11
3.11 Pump Piping Connections 12
3.12 Lubrication of Pump Bearings 12
4.0 TONKAFLO PUMP START-UP 14
4.1 Pump Priming 14
4.2 Pump Rotation 14
4.3 Initial Operation 15

Page
5.0 GENERAL TROUBLESHOOTING FOR TONKAFLO PUMPS 16
5.1 Troubleshooting Chart 16
5.2 Bearing Frame Temperature 16
6.0 TONKAFLO FIELD MAINTENANCE 17
6.1 Mechanical Seal Leakage 17
6.2 Removal and Installation of Liquid End Assembly 17
6.2.1 Removal of Liquid End Assembly 17
6.2.2 Installation of Liquid End Assembly 18
6.3 Mechanical Seal Replacement - SS5500, SS8500,
SS12500, SS23000, and SS24000 Series Pumps 19
6.4 High-Pressure Mechanical Seal Replacement 20
6.5 Bearing Frame Maintenance on E-Bearing Frame Tonkaflo Pumps 20
6.5.1 Disassembly of Pumps with Type E-Bearing Frame 20
6.5.2 Assembly of Pumps with Type E-Bearing Frame 22
6.5.3 Install the Liquid End and Remount the Pump 24
6.6 Oil Seal Replacement 24
6.6.1 Replacement of Oil Seal #2 24
6.6.2 Replacement of Oil Seal #1 25
6.6.3 Replacement of Oil Chamber O-ring Seal 26
6.7 Lubrication 27
6.7.1 Adding Oil 27
6.7.2 Oil Change 27
7.0 TONKAFLO SERVICE POLICY - LIQUID END 28
8.0 TONKAFLO PUMP RETURN GOODS AUTHORIZATION
(RGA) PROCEDURE 29
8.1 Motor Warranty 29
8.2 In-Warranty Pump Failure 29
8.3 Out-of-Warranty Pump Failure 29
8.4 Shipping Charges 29
8.4.1 In-Warranty 29
8.4.2 Out-Of-Warranty When New Pump Is Purchased 29

Page
9.0 DIMENSIONAL DRAWINGS 30
10.0 REPLACEMENT PARTS 31
10.1 Pump Cutaway Drawing 31
10.2 Standard Model Parts List 32
10.3 Accessories 34
10.4 Recommended Spare Parts List 35
10.5 Complete Set of Bearing Frame Replacement Parts 36
10.6 Bearing Frame Overhaul Tools 37
10.7 Mechanical Seal Change-Out Tools 37
10.8 Ordering Parts 37
11.0 WARRANTY 38
LIST OF FIGURES
Figure Title
3.1 Bedplate Installation 6
3.2 Coupling Alignment 8
3.3 Gap Between Flanges 9
3.4 Suction Lift Piping 10
3.5 Installation of Discharge Screen 11
3.6 Installation of Oiler 13
3.7 Initial Cold Setting for Constant Level Oiler 13
6.8 Separation of Liquid End from Bearing Frame 18
6.9 Removal of Mechanical Seal 19
6.10 Bearing Frame Overhaul 21
6.11 Setting Bearing Frame Shaft End Play 23
9.12 Dimensions, Pump Only 30
10.13 Pump Cutaway Drawing 31
LIST OF TABLES
Table Title
2.1 Tonkaflo Pump Capacities 2
2.2 Tonkaflo Standard Model Pump Boost Pressure 3
3.3 Typical Heavy-Duty Hydraulic and
Lubricating Oil Types 12

1.0 INTRODUCTION
This manual contains information important to the installation, operation, and maintenance
of your Tonkaflo®high-pressure multi-stage centrifugal pump. The Tonkaflo pump has been
designed for reliable service in many types of pumping applications. Proper installation and
normal maintenance will help insure extended pump life and prevent costly downtime.
Before installing and operating your Tonkaflo pump, read these instructions carefully and
keep the manual handy for future reference. This manual is intended for general
maintenance only.
Further information may be obtained by contacting your local Tonkaflo pump distributor or
Osmonics. Contact Osmonics at:
GE Infrastructure
Water & Process Technologies
5951 Clearwater Drive
Minnetonka, MN
55343-8995
USA
Phone: 952 - 933 - 2277
Fax: 952 - 933 - 0141
Toll Free: (800) 848 - 1750
This manual is not intended for repair or overhaul of the Tonkaflo pump liquid end.
Only the factory or those who have successfully completed the Factory Service School and
have been certified are authorized to repair, service, or overhaul Tonkaflo pump liquid ends.
Your new Tonkaflo multi-stage centrifugal pump is designed for quiet, smooth running, and
highly efficient operation. The seven series of Tonkaflo pumps range in capacities from 2 -
300 gpm (0.45 - 68.1 m3/h) with single unit pressures up to 650 psig (44.8 barg). The materials
of construction make Tonkaflo pumps suitable for many chemical and pure water
applications.
The Tonkaflo pump's unique modular design allows the user to choose the number of stages
that most closely match the desired performance, and thereby achieve the highest pumping
efficiency. Unlike many other pump manufacturers, GE will produce pumps to fit your
particular applications should a standard model pump not suit your requirements.
NOTE:This manual, along with all other manuals, is available at www.gewater.com.
1

2
2.0 TONKAFLO SPECIFICATIONS
The Tonkaflo pumps covered in this instruction manual are the higher capacity SS5500,
SS8500, SS12500, SS23000, and SS24000 Series pumps. These five series of pumps cover a
flow range of 20 - 300 gpm (4.5 - 68 m3/h) with single-unit pressures up to 650 psig (44.8 barg).
The capacity and discharge pressure can be increased by operating pumps in parallel or
series, respectively. There is no maximum limit on capacity when operating Tonkaflo pumps
in parallel. When operating pumps in series, a maximum discharge pressure of 1000 psig (69
barg) may be achieved with optional high pressure construction on the downstream pump.
With inlet pressures greater than 200 psig (13.8 barg) and less than 400 psig (27.6 barg),
optional high-pressure mechanical seals should be used.
2.1 Capacities
Table 2.1
Tonkaflo Pump
Capacities
NOTE: There must be adequate flow through the pump to prevent excessive heat build-
up at all times.
SS
Series
5500
8500
12500
23000
24000
3500 rpm - 60 Hz
Minimum - Maximum
gpm (m3/h)
20 - 75 (4.5 - 17.0)
30 - 100 (6.8 - 522.7)
40 - 190 (9.1 - 43.1)
80 - 300 (18.2 - 68.1)
80 - 300 (18.2 - 68.1)
Maximum
Number
of Stages
60 Hz
24
27
22
11
16
2900 rpm - 50 Hz
Minimum - Maximum
gpm (m3/h)
15 - 65 (3.4 - 14.8)
20 - 90 (4.5 - 20.4)
35 - 160 (7.9 - 36.3)
65 - 25 (14.8 - 56.8)
65 - 250 (14.8 - 56.8)
Maximum
Number
of Stages
50 Hz
33
33
27
16
18
Maximum
Efficiency
60%
64%
62%
61%
61%

3
2.2 Maximum Developed Boost Pressure for Standard Model Pumps (3500 rpm)
Table 2.2
Tonkaflo Standard Model
Pump Boost Pressure
2.3 Maximum Recommended Operating Temperature:
The maximum recommended operating temperature range is 125°F (52°C). The
maximum operating temperature is dependent upon the operating pressure. For
high temperature applications, consult your local Tonkaflo distributor or the factory
for available materials of construction.
Pumps have the maximum recommended temperature stated on the label on the
pump case. The temperature stated is for the design flow and pressure.
2.4 Standard Materials of Construction:
SS: Wetted castings and pump shaft are 316 Stainless Steel (SS). The pump casing
is 316SS. Impellers and diffusers are Noryl except SS23000 and SS24000-
Series diffusers which are 316SS. The mechanical seal has a carbon rotating
face and a ceramic stationary face. The secondary sealing element of the
mechanical seal is Buna-N. The standard O-rings and diffuser bearings are
Buna-N.
Standard
Up to 650 psig (44.8 barg)
Up to 640 psig (44.1 barg)
Up to 640 psig (44.1 barg)
Up to 380 psig (26.2 barg)
Up to 530 psig (36.5 barg)
SS Series
5500
8500
12500
23000
24000
Centrifugal
Stages
24
27
22
11
16

2.5 Special Materials of Construction
Optional ethylene propylene (EPDM), Viton*, and Teflon* elastomers are available,
contact the factory.
2.6 Pump Nomenclature
2.7 Special Liquids
For liquids other than water, aqueous solutions at elevated temperatures, or corrosive
solutes, consult the factory for compatibility.
4
Model SS5518E
SS = Materials of Construction
55 = Series 5500
18 = Number of Stages
E = Bearing Frame
Model SS5527E-50Hz
SS = Materials of Construction
55 = Series 5500
27 = Number of Stages
E = Bearing Frame
50Hz = 50 Hertz Operation
* Viton and Teflon are trademarks of E.I. Dupont de Nemours and Company, Inc.

3.0 PUMP INSTALLATION
3.1 Check Upon Arrival
Your pump was inspected at the factory prior to shipment to assure meeting the
requirements of your order. It is suggested the pump be checked upon receipt for
possible damage due to shipping. Any damage should be reported immediately to
the carrier.
3.2 Location
Install the pump as close as possible to the source of the liquid to be pumped. High-
pressure process pumps may need to be located several feet (meters) away or
remote from the liquid source in which case a transfer pump would be used near the
liquid source to transfer liquid to the high-pressure pump. It is ideal for the pump to
be fed from a reservoir above the pump or from a supply line under positive pressure.
3.3 Foundation
The foundation for the bedplate, motor and pump must be sufficiently rigid and
substantial to prevent any significant vibration of the pump or deflection of the motor
and pump shafts when operating the pump.
The recommended foundation is of reinforced concrete or a heavy steel skid. When
using concrete, it should support the bedplate at all points. When using a steel skid,
the motor and coupling must be re-aligned after any movement whatsoever of the
skid.
The pump mounting is to be horizontal and the pump leveled within 1/16 - inch/foot
(1.59 mm/meter), so the oil level at both bearing frame bearings is the same. The
pump case is the best reference for leveling.
5

6
3.4 Bedplate Installation
NOTE: The bedplate must be level and securely mounted for proper pump operation.
Figure 3.1
Bedplate
Installation

3.5 Motor, Pump, and Coupling Alignment (Applicable for Direct Drive)
Accurate alignment of the motor, pump and coupling is a "MUST."
The final alignment of the motor, pump and coupling is to be done after the bedplate
is rigidly mounted (Section 3.3, Foundation), with the unit in its final operating position.
Shipment, as well as handling in the field, may have changed the alignment, and it is
essential that the alignment be checked before operating the pump. To check
alignment:
Shims are placed under the motor mounting pads to facilitate adjustment. Use a
straight edge, feeler gauges, and a 1/2- to 1-inch taper gauge (or telescope gauge
and micrometer) to perform the steps shown in Figure 3.2 [Coupling Alignment (2a, 2b,
2c, and 2d)].
If the pump has been supplied complete with motor, pump, coupling and coupling
guard, remove the coupling guard. Loosen the coupling flange on the motor shaft
and remove the coupling sleeve.
If the pump is not supplied as a complete unit, slide one coupling flange onto the
pump shaft with a snug-fitting key. With the flange and key flush with the shaft end,
tighten the set screws.
Slide the coupling flange onto the motor shaft with shaft key and position the motor
on the bedplate.
Measure horizontal and vertical alignment (Figure 3.2, 2a & 2b) using a straight edge
and feeler gauges. Align the coupling to the accuracy noted in Figure 3.2 (2a & 2b)
using the shims provided and placing them under the motor mounting feet as needed.
Measure angular alignment of the flanges using a 1/2- to 1-inch (1.27 - 2.54 cm) taper
gauge or telescope gauge and micrometer. Taper gauge as shown on Figure 3.2 (2c
& 2d). Align the coupling to the accuracy noted in Figure 3.2 (2c & 2d).
For best coupling life, keep the misalignment values as near to zero as possible.
Insert the wire ring and two-piece coupling sleeve between the two coupling flanges.
Slide the wire ring into the groove on the sleeve halves and slide the flange along the
motor shaft to fully seat the sleeve between the two flanges. Adjust the gap between
the flanges to the values shown in Figure 3.2 within ±1.6 - 1.0 - inch (±1.5- 0 mm).
7

Figure 3.2
Coupling Alignment
8

3.6 Coupling Guard
Coupling guards are available for all Tonkaflo pumps. GE recommends a coupling
guard. Check your plant safety requirements.
Figure 3.3
Gap Between Flanges
3.7 Piping
The pump inlet housing has been designed for either upright or left or right horizontal
positioning. For left or right position, remove the 4 bolts holding the suction (inlet)
housing to the bearing frame. Rotate the suction housing 90° and replace the 4 bolts.
For left or right position, a pipe plug can be removed to vent off any air in the top of
the pump inlet housing should "venting" be required for pump priming and start-up for
your installation.
Suction (pump inlet) piping should be of ample size, installed in direct runs, and have
a minimum of bends to minimize pressure loss and to help ensure sufficient suction
pressure. When possible, keep the suction pipe short.
The suction (inlet) pipe size immediately ahead of the pump inlet should be sufficiently
sized so that the pressure available at the pump suction (inlet) exceeds the Net
Positive Suction Head (NPSH) required by the pump. Generally, the suction (inlet)
piping should be 4-inches (10.2 cm) for flows greater than 170 gpm (38.6 m3/h),
3-inches (7.6 cm) for 100 gpm - 170 gpm (22.7 - 38.6 m3/h), 2-1/2 inches (6.4 cm) for
60 gpm - 100 gpm (13.6 - 22.7 m3/h), and 2-inches (5.1 cm) or greater for 60 gpm
(13.6 m3/h) or less (see frictional loss and pressure loss discussion below).
The recommended pipe size for most applications should result in frictional line loss
of 3 psig per 100 feet (0.21 barg per 30.5 m) or less for suction lines and 10 psig per
100 feet (0.69 bar per 30.5 m) or less for discharge lines. A larger pipe size will reduce
the frictional line loss.
The pump inlet piping should be designed to avoid areas where air may be trapped
and accumulated. Keep the suction pipe free of high points and thus air pockets,
which tend to disrupt pump priming and start-up. Suction pipe size changes just
ahead of the pump should be tapered. Reducers should be eccentric to avoid air
pockets.
9
Coupling
Size
6
7
8
9
inch
7/8
1
1-1/8
1-7/16
mm
22.2
25.4
28.6
36.5
Gap

The discharge piping should be sized to properly handle the maximum flow and
pressure developed by the pump.
When the pump operates with a suction lift, the suction pipe should slope upward to
the pump from the source of supply (Figure 3.4, Suction Lift Piping). Provision must be
made for priming the pump. To maintain pump prime, a foot valve can be used with
an opening at least as large as the inlet piping. An alternate method would be to use
a shutoff valve on the discharge line and a vacuum pump to draw air out of the pump
and suction line.
Figure 3.4
Suction Lift Piping
When pumping liquid from a tank, the suction line must be submerged enough so air
is not drawn into the suction line from a vortex. Increasing the size of the inlet pipe to
reduce the velocity will help to prevent the vortex from forming.
Hot liquids within the temperature range of the pump must have sufficient positive
head to prevent vaporization at the impeller inlet. Consult the factory for NPSH
requirements of the pump for your application.
The pump must never be throttled on the suction side.
After installation, test the suction line with water at 30 psig (2.1 barg) pressure to
detect leaks.
3.8 Bypass Piping for Multi-Stage Pumps
Sufficient flow must be maintained through a multi-stage pump so the pump does not
overheat. Low flow rates result in excessive energy accumulation and heat build-up
in the pump. Minimum recommended flows are shown in Section 2.0 (Tonkaflo
Specifications).
10

A bypass pipe, (a pipe from the discharge piping back to the source of liquid supply or
suction line), may be needed for your installation to ensure that the pump operation
is within the specified flow range. It is recommended that the connection of a bypass
pipe to the suction line be at least 24-inches (61 cm) away from the pump inlet.
3.9 Suction Screen (Strainer)
This is a precision multi-stage centrifugal pump with close tolerances to provide
maximum efficiency.
It is good practice to install a 30 mesh or finer screen (available as an accessory) or a
cartridge filter in the suction line to collect any foreign objects or large particles.
The pump must not be operated with restricted suction line (inlet) flow.
Positive gauge pressure must be maintained at the pump inlet (downstream from the
filter or screen). A clogged screen or filter will result in a greater pressure drop. A low
pressure alarm or shutoff switch located between the screen or filter and the pump
should always be used in conjunction with a suction line screen or filter.
3.10 Discharge Screen (Strainer)
A 30 mesh screen (available as an accessory) located in the discharge piping will
protect your process fluid should the pump be damaged due to improper operation
or other causes. The installation of the discharge screen is shown in Figure 3.5
(Installation of Discharge Screen).
Figure 3.5
Installation of Discharge Screen
11

12
3.11 Pump Piping Connections
The standard model Tonkaflo SS5500, SS8500, SS12500, SS23000 and SS24000 Series
Pumps have grooved ends as shown in Figure 3.5 (Installation of Discharge Screen) to
accept Victaulic-type couplings. The couplings with 1000 psi (69 bar) working
pressure rating are available as an accessory and include a Buna-N gasket (standard).
Other gasket materials such as Viton or ethylene propylene are available. Consult the
factory.
The coupling gasket should be thoroughly lubricated before installation. Silicone
grease is recommended. Petroleum grease is suitable for most gasket materials, but
is not suitable with ethylene propylene (EPDM).
3.12 Lubrication of Pump Bearings
The pump bearings are not lubricated at the factory.
The bearings are lubricated by maintaining a static oil level within the bearing frame.
One quart (0.95 L) of oil is provided with each new Tonkaflo oil lubricated pump.
Additional oil can be purchased from GE (Section 10.2, Standard Model Parts List).
A heavy-duty premium hydraulic and lubricating oil (anti-wear, non-detergent, rust,
oxidation, and foam inhibited) should be used, such as those listed in Table 3.3 (Typical
Heavy-Duty Hydraulic and Lubricating Oil Types).
Table 3.3
Typical Heavy-Duty Hydraulic
and Lubricating Oil Types
A #5 TRICO OILER is provided (not installed when shipped) and is used to maintain the
static oil level. The removable crossbar bottle support for the oiler was adjusted at the
factory to maintain proper oil level. If adjustment is lost, reset according to Figure 3.6
(Installation of Oiler). The crossbar support must be used. Do not discard.
* ISO-Vg Grade 100 has a viscosity of 465 SSU at 100°F (38°C).
Description
Anti-wear Hydraulic Oil
1 Quart (P/N 1120693)
1 Case [12 Qt, (P/N 1120682)]
Heavy-duty premium Hydraulic
Oil which meets ISO-VG Grade
100 Specifications*
Manufacturer or Supplier
Tonkaflo Pumps
Shell or other brands

An oil sight gauge is provided on the bearing frame so the oil level may be viewed
before start-up as a check on proper installation of the oiler.
To install the oiler, remove the 1/4-inch pipe plug in either side of the bearing frame.
Using a pipe sealing compound compatible with oil, install the nipple and elbow
assembly as shown in Figure.3.6 (Installation of Oiler). Install the lower reservoir using
the thread sealing compound.
The bearing frame oil reservoir capacity is approximately one quart (one liter). Fill the
oiler bottle and place onto the lower reservoir. Several fillings should be required. DO
NOT try to fill the bearing frame reservoir by pouring directly into the lower reservoir.
On the final bottle fill, allow 15 minutes or more to elapse before measuring the oil
level. On the final fill, the bottle should be approximately 2/3 to 3/4 full, and not
completely full, for best operation of the Trico Oiler.
Check the oil level according to Figure 3.7 (Initial Cold Setting for Constant Level Oiler).
Adjust as necessary, draining excess oil.
Replenish oil in bottle only when oil is no longer visible in the globe.
ON PUMP START-UP, VIEW THE SIGHT GAUGE TO SEE THAT OIL DROPLETS FORM ON
THE SIGHT GAUGE, indicating sufficient oil level. The oil level will rise gradually in the
sight gauge in a few minutes to the center of the eye, or just above the center.
The bearings are lubricated by a mist. Setting the initial cold oil level higher than
specified will result in higher oil operating temperatures and reduced oil life.
13
Figure 3.6
Installation of Oiler
Figure 3.7
Initial Cold Setting for
Constant Level Oiler

4.0 TONKAFLO PUMP START-UP
4.1 Pump Priming
THE INLET PIPING AND PUMP MUST BE FILLED WITH LIQUID (i.e., PRIMED) BEFORE
START-UP. If the pump is below the liquid source or connected to a positive pressure
source, the pump may be primed from that source.
If the pump is above the liquid source, fill the pump and supply line with liquid from
an external source.
The pump should be shut off immediately if prime is lost to avoid overheating and
possible damage to the internals of the liquid end.
The pump should not run with a closed discharge for more than one (1) minute as the
liquid can heat up very quickly and exceed the maximum operating temperatures
causing irreversible damage to the wetted internal parts of the liquid end.
WARNING: NEVER RUN PUMP DRY.
In order to adequately protect the Tonkaflo pump from running dry, it is suggested
that controls to protect the pump be used. These controls include: pressure switches,
flow switches, and temperature switches.
4.2 Pump Rotation
When initially connecting to the power source, be certain that the motor wiring and
available line voltage are the same. Connect the wires as shown on the motor wiring
diagram located on the inside of the motor junction box cover or on the nameplate
label.
CAUTION: If a three-phase motor is wired incorrectly, it will cause the pump
shaft to rotate in the wrong direction. This will result in low pressure
(about 1/4 to 1/2 of normal) and flow (about 1/2 of normal).
A motor starter is required for all three-phase motors.
BEFORE STARTING THREE-PHASE MOTOR
STEPS
1. Prime pump before applying power to avoid damage to pump.
2. Apply power for ONE SECOND to check direction of motor shaft rotation. The
motor shaft should turn in a clockwise direction as viewed from the motor end.
The direction of rotation for three-phase motors may be reversed by
interchanging any two leads.
14

4.3 Initial Operation
With the oiler installed and filled, oil level set, pump primed, and pump rotation
checked, your pump is ready to operate.
Upon start-up, check to see that the correct boost pressure level is obtained at design
flow and that oil droplets form in the oil eye (Section 3.12, Lubrication of Pump
Bearings).
If prime was not achieved, reprime as necessary.
15

5.0 GENERAL TROUBLESHOOTING FOR TONKAFLO PUMPS
5.1 Troubleshooting Chart
5.2 Bearing Frame Temperature
The operating temperature of the oil lubricated E-Bearing frame utilized on high
pressure Tonkaflo pumps will vary depending on the boost pressure of the pump. As
a general rule, type E-Bearing frames will operate within a temperature range of
130°-203°F (54° - 95°C). During operation, the bearing frame will feel hot to the touch.
16
MOTOR RUNS HOT OR STOPS
1. Motor wired improperly
2. Bad connection
3. Motor exceeded rated amp draw
4. Excessive ambient temperature
5. Heater size to small in motor heater
6. Binding rotation in the pump shaft
7. Bearings not adequately lubricated
8. Specific gravity or viscosity of liquid
higher than design conditions
LOW PRESSURE
1. Pump not adequately primed
2. Air leak in inlet piping
3. Excessive flow
4. Clogged suction line filter or screen
5. Reverse rotation of pump shaft
6. Foot valve operating improperly
PUMP LEAKING
1. Mechanical seal needs replacing
2. O-rings in pump casing damaged
3. Oil seals need replacing
4. Piping not sealed properly
LOW FLOW
1. Restrictions in inlet or discharge
2. Foot valve operating improperly
3. Air leak in inlet piping
4. Air leak in mechanical seal
5. Wrong installation of belt drive
6. Suction lift too high
7. Reverse rotation of pump shaft
8. Pump not primed adequately
9. Inlet strainer/filter plugged.
MOTOR DOES NOT RUN
1. Blown fuse or tripped circuit breaker or
overload heater
2. Motor to hot - allow to cool
3. Motor voltage connection and line
voltage different
4. Bad connection
5. Motor wired improperly
6. Wrong ratio for belt drive
PUMP VIBRATION
1. Misalignment of flexible coupling
2. Bent pump shaft
3. Improper mounting
4. Starved suction
5. Worn bearings
6. Motor out of balance