Fedco Mss series User manual

MSS 15-75 Overhaul Manual, 02-015-XXXXXX-1

www.fedco-usa.com

ONE COPY OF THIS MANUAL MUST REMAIN WITH THE EQUIPMENT AT ALL TIMES

Original Instruction - English Version

OVERHAUL MANUAL

Models: MSS-15 ● MSS-20 ● MSS-30 ● MSS-50 ● MSS-70

MSS-40 ● MSS-55 ● MSS-75

MSS™

MULTI-STAGE SEAWATER

HIGH PRESSURE PUMPS

MSSTM Series

- 2-

FEDCO Certications

ISO 9001 and ISO 14001:

FEDCO has adopted the ISO 9001 standard to dene and develop our Quality Manage-

ment System (QMS.) The QMS allows FEDCO to better serve our customers’ needs

through continuous improvement of the quality, delivery, and e󰀩ciency of our products.

3 FEDCO U.S.A. is ISO 9001:2015 certied.

FEDCO has adopted the ISO 14001 standard to dene and develop our Environmental

Management System (EMS) to better protect our environment.

3 FEDCO U.S.A. is ISO 14001:2015 certied.

ISO

14001:2015

REGISTERED

ISO

9001:2015

REGISTERED

CE Stamp:

CE marking conrms that specic products are in compliance with European Union

requirements. This allows FEDCO’s product lines to be sold throughout the European

Economic Area. Most FEDCO products can be provided with the CE mark.

NOTES: It is illegal to operate equipment in an EU member state if the manual(s) is not

written in that State’s language, Contact FEDCO if a translation is needed.

Compliant Test Systems:

Performance acceptance testing of FEDCO pumps and energy recovery devices are

measured using procedures and instrumentation tested by a third party NSF® auditing

company to be in accordance to the Hydraulic Institute’s H.I. 14.6 standards for cen-

trifugal pump testing and data recording.

www.fedco-usa.com

MSSTM Series

- 3-

Commitment to Quality & Success

Fluid Equipment Development Company (FEDCO)

was founded in 1997 to develop new uid machinery

to reduce the cost of reverse osmosis desalination.

The results included patented concepts, highly in-

tegrated design, superior production software, and

sophisticated manufacturing processes. Our e󰀨orts

culminated in multiple lines of energy recovery tur-

bines and pumps uniquely suited for seawater and

brackish RO desalination.

Our teams of talented and energetic engineers,

manufacturing specialists and systems experts have

created a fully integrated enterprise with one aim – to

provide our customers with customized uid machines

with exceptional e󰀩ciency and low capital cost cou-

pled with customer service that exceeds their expec-

tations. The results include new designs, technology,

manufacturing processes, and standards. Our pumps

and ERDs use bearings that are lubricated by feed or

brine to eliminate the numerous maintenance and lo-

gistics issues associated with oil or grease lubricated

bearing systems. We o󰀨er three materials of construc-

tion: Duplex SS, Super Duplex SS and 316 SS.

We design uid machines to take full advantage of the

technical characteristics of the membrane process.

FEDCO pumps only cover ows and pressures found

in BWRO and seawater SWRO applications. They are

designed for clean uids and are optimized for typical

suction pressures in RO systems. Our ERDs include

variable area nozzles that meet typical brine pressure

variations. Our products eliminate external tubing car-

rying high pressure feed or brine that can fail creating

hazards to personnel and equipment. Our units are

designed for operation and maintenance by unskilled

personnel in the harshest of desert or marine envi-

ronments. Additionally, our Monroe facility operates

the largest pump and ERD test system dedicated to

SWRO systems in the world.

With the longest warranty and the highest e󰀩ciencies,

our product lines are unmatched in quality and per-

formance by any manufacturer in the RO equipment

market. FEDCO is a widely recognized supplier with

thousands of units installed around the world.

Eli Oklejas - FEDCO CEO

FEDCO USA

FEDCO

800 Ternes Drive

Monroe, MI 48162, USA

Telephone: +1 (734) 241-3935

Fax: 734-241-5173

Email: [email protected]

FEDCO UAE

Plot No. 598 | Showroom No. 7

Rajneesh Traders Showroom Bldg

Street 2, Dubai Invest Park 1

P.O. Box 282102

Dubai, United Arab Emirates

Telephone: +971 (0) 4-824 5303

Fax: +971 (0) 4-824 5303

Email: [email protected]

FEDCO SINGAPORE

(No Oce Address)

Telephone: +(65) 9784 3813

Email: [email protected]

www.fedco-usa.com

For patent coverage visit patent.fedco-usa.com

MSSTM Series

- 4-

Table of Contents

Warnings and Safety Precautions ...............7

Inspection of Service Kits Upon Receipt..... 7

User Health and Safety............................... 8

In the Work Area ......................................... 8

Electrical Connections and Regulations ..... 8

Pump Overhaul..............................................9

MSS Pump External Components .............. 9

MSS Pump Internal Components

(MSS-15/20/30/50/70)............................... 10

MSS Pump Internal Components

(MSS-40/55/75)......................................... 11

Mechanical Seal Removal ........................ 12

Mechanical Seal Installation ..................... 15

HPSC Mechanical Seal Removal ............. 18

HPSC Mechanical Seal Installation ......... 21

Shaft Position Sensor Removal ................ 24

Shaft Position Sensor Installation ............. 25

Balance Disc Removal.............................. 28

Balance Disc Inspection............................ 32

Balance Disc Wear Chart.......................... 32

Balance Disc Installation........................... 33

Stage Replacement (MSS-15/20/30/50/70)38

Stage Replacement (MSS-40/55/75)........ 49

Specications ..............................................58

Cleaning.................................................... 58

Inspection.................................................. 58

Fastener Torque Specications ................ 59

Pump Alignment Specications ................ 59

Balance Disc Specications...................... 59

Lubricants and Compounds...................... 59

Notes.............................................................60

MSSTM Series

- 5-

Item Part Description BDK

Balance Disc Kit

MSK

Mechanical

Seal Kit

MSK HP

Mechanical

Seal Kit HPSC

OHK

Overhaul Kit

TNK

Throttle

Nipple Kit

TNK HP

Throttle Nipple

Kit HP

STG

Stage Kit

SHT

Shaft Kit

ORK

O-Ring Kit

ORK HP

O-Ring Kit HP

RRK

Retaining

Ring Kit

RRK HP

Retaining Ring

Kit HP

FCK

Flex

Coupling Kit

ALK

Alignment Kit

DLK

Drain Linke Kit

1Shipping plug *

2Stationary seal retaining ring XXX

3Inlet washer XXX

4Mechanical seal XXX

5Mechanical seal shaft washer XXX

6Rotating seal retaining ring X X X X

7Inlet O-ring X X X X

8Split collar retaining ring (MSS-15/20/30/50/70 only) X X X X

9Split collar (MSS-15/20/30/50/70 only) X

10 Collar sleeve (MSS-15/20/30/50/70 only) X

11 Inlet ring *

12 Di󰀨user bearing X X

13 Stage spacer (MSS-15/20/30/50/70 only) X X

14 Di󰀨user bowl (+ First stage housing for MSS-15/20/30 only) X X

15 Impeller X X

16 Series spacer (MSS-15/20/30/50/70 two shell pumps only) X X

17 Series ange O-ring X X X X

18 Discharge ring *

19 Stage spacer (custom end spacer) X

20 Shaft washer/ balance disc washer X X

21 Bearing holder *

22 Balance disc key X X

23 Cavity cover *

24 Balance disc X X

25 Cavity cover O-ring X X X X

26 Discharge housing O-ring X X X X

27 Balance disc atwasher X X

28 Balance disc lockwasher X X

29 Balance disc nut X X

30 Discharge housing retaining ring X X X

31 Pump shaft X

32 HP shaft bushing anti-roll pin X

33 HP shaft bushing X

34 HP shaft bushing O-ring X X

35 HPSC O-ring X X

36 HPSC retaining ring X X

37 Assembled ex coupling X X

38 Shaft key X X

39 Alignment pins X

40 SS shim set X

41 Throttle nipple elbow X X

42 Throttle nipple X X

43 Throttle nipple O-ring X X X X X X

44 Split cone (MSS-45/55/75 only) X X

45 Split cone nut (MSS-45/55/75 only) X X

46 Clamping neck ring (MSS-45/55/75 only) X X

47 Floating neck ring (MSS-45/55/75 only) X X

48 Drain line elbow X

49 Bearing drain line X

50 Drain line connector X

* Not Included in any kit. Can be purchased separately.

MSSTM Series

- 6-

Figure 1 - MSS-A Service Parts Kits Components

3536

MSS-40/55/75

MSS-50/70

MSSTM Series

- 7-

Warnings and Safety Precautions

Inspection of Service Kits Upon Receipt

• Review the contents of the packing list

to make sure all components have been

included.

• Inspect all components for signs of damage

which may have occurred during shipping.

If damage is present or if the contents are

incomplete, please contact your shipping

company or a FEDCO representative before

proceeding.

Safety practices and precautions for the op-

eration and maintenance of all FEDCO pump

products MUST BE FOLLOWED. This informa-

tion supplements oral or written instructions that

may be received. Safety MUST be practiced

as part of the standard operating procedures

for this equipment during any installation and

operation. To ensure that safe operating and

maintenance procedures are followed, opera-

tors should develop and keep up a program

of safety checks and current instructions. This

manual contains certain operating and main-

tenance procedures that involve exposure to

potentially hazardous situations. The levels of

hazardous situations are as follows:

DANGER

Hazards which are IMMEDIATELY ACCESSIBLE, and capable of

causing SEVERE PERSONAL INJURY OR DEATH.

WARNING

Hazards which are NOT IMMEDIATELY ACCESSIBLE, but are

capable of causing SEVERE PERSONAL INJURY OR DEATH.

CAUTION

Hazards which are NOT IMMEDIATELY ACCESSIBLE, and can

cause PERSONAL INJURY.

ELECTRICAL Hazards which are related to Electrical Components and can

HAZARD RESULT IN ELECTRICAL RISKS, SHOCK, ELECTROCUTION

OR DEATH if instructions are not followed properly.

PUNCTURE Hazards which are NOT IMMEDIATELY ACCESSIBLE and can

HAZARD RESULT IN SEVERE PERSONAL INJURY OR DEATH if instruc-

tions are not followed properly.

MSSTM Series

- 8-

Warnings and Safety Precautions

Continued

WARNING

All pump and safety precautions must be followed

to prevent physical injury to the operator. It is illegal

to operate the equipment in an EU member state if

the manual(s) is not written in that state’s language.

Contact FEDCO if a translated copy is needed.

CAUTION

A pump is a pressure-generating device with rotating

parts that can be hazardous. Any device containing

generated pressure can rupture, explode or dis-

charge its contents if it is over-pressurized and may

possibly result in personal injury, property damage,

environmental damage and death. All necessary

precautions must be exercised to insure over-pres-

surization does not occur. FEDCO will not accept

responsibility for physical injury, damage or delays

caused by a failure to observe the instructions in this

manual.

WARNING

Installation, operation or maintenance of the pump

unit in any manner which is not covered in this

manual could cause damage to the equipment, seri-

ous injury or death. This includes any modication

to the equipment or the use of parts not provided by

FEDCO. If there is a question regarding the intend-

ed use of the equipment, please contact a FEDCO

representative before proceeding.

CAUTION

This manual clearly identies accepted methods for

safe disassembly and assembly. These methods

must be strictly adhered to.

WARNING

Do not use the pump equipment for a di󰀨erent appli-

cation than originally specied without the approval

of a FEDCO representative.

WARNING

NEVER operate the pump equipment:

● below the minimum ow rate.

● when dry.

● without priming.

● without proper guards and safety devices installed.

● with the discharge valve closed.

● with the suction valve closed.

WARNING

FEDCO pumps are intended to pump saltwater and

brine to membranes for the reverse osmosis desali-

nation process. FEDCO pumps are not intended

to pump ammable or hazardous liquids. Solutions

intended for human consumption need proper

purication per product. FEDCO approval will be

needed to control slurry and particle size for this

specic product

ELECTRICAL HAZARD

Always follow the Lock-out / Tag-out procedure

developed by your company before starting any

maintenance or repair.

User Health and Safety

Safety equipment and PPE (Personal Protection

Equipment) should be used in accordance with

company regulations.

In the Work Area

• Always keep the work area clean and dry.

• Avoid all electrical dangers. Be aware of risks

from electric shock or arc ash hazards.

• Utilize adequate lifting equipment and methods.

Electrical Connections and Regulations

• Refer to the motor nameplate for specic

electrical operating information.

• Electrical connections must be made by

certied electricians in compliance with

all international, national, state, and local

regulations and codes.

• Insure the product is isolated from the power

supply and cannot be accidentally energized.

• Make sure all thermal contacts are connected

to a protection circuit according to product

specications.

• You must ground (earth) all electrical

equipment. This applies to the pump

equipment, the driver, and any monitoring

equipment. Providing acceptable grounding

reduces risk of electric shock and stray currents

suspected of causing galvanic corrosion.

EARTH

MSSTM Series

- 9-

Pump Overhaul

MSS Pump External Components

123

10 11

Figure 2 - Pump External Components

Item Description Item Description

1 Precision leveling foot 14 Series shell (if equipped)

2Shell support bracket 15 Series shell O-ring

3Inlet housing bolts 16 Shell ange bolts

4 Inlet housing O-ring 17 End shell

5 Inlet housing 18 Discharge housing O-ring

6 High pressure seal carrier O-ring (if equipped) 19 Discharge housing

7High pressure seal carrier (if equipped) 20 Discharge housing retaining ring

8Shipping plug (optional) 21 Retaining clips

9Coupling guard screws (part of coupling guard) 22 Retaining clip cap screws

10 Coupling guard 23 Lock washer

11 Motor adapter 24 Throttle nipple

12 Motor adapter bolts 25 Throttle nipple O-ring

13 Flexible coupling 26 Bearing drain line

MSSTM Series

- 10 -

Pump Overhaul Continued

MSS Pump Internal Components (MSS-15/20/30/50/70)

3536

Figure 3 - Pump Internal Components (MSS-15/20/30/50/70)

Item Description Item Description

1Shipping plug (optional) 19 Stage spacer (custom end spacer)

2 Stationary seal retaining ring 20 Shaft washer

3 Inlet washer 21 Bearing holder

4 Mechanical seal 22 Balance disc key

5 Mechanical seal shaft washer 23 Cavity cover

6Rotating seal retaining ring 24 Balance disc

7 Inlet O-ring 25 Cavity cover O-ring

8 Split collar retaining ring 26 Discharge housing O-ring

9 Split collar 27 Balance disc atwasher

10 Collar sleeve 28 Balance disc lockwasher

11 Inlet ring 29 Balance disc nut

12 Di󰀨user bearing 30 Discharge housing retaining ring

13 Stage spacer 31 Pump shaft

14 Di󰀨user bowl/ rst stage housing 32 HP shaft bushing anti-roll pin (if equipped)

15 Impeller 33 HP shaft bushing (if equipped)

16 Series spacer (two shell pumps only) 34 HP shaft bushing O-ring (if equipped)

17 Series ange O-ring 35 HPSC O-ring (if equipped)

18 Discharge ring 36 HPSC retaining ring (if equipped)

MSS-50/70

MSSTM Series

- 11 -

Pump Overhaul Continued

MSS Pump Internal Components (MSS-40/55/75)

3334

Figure 4 - Pump Internal Components (MSS-40/55/75)

Item Description Item Description

1Shipping plug (optional) 18 Balance disc washer

2 Stationary seal retaining ring 19 Bearing holder

3 Inlet washer 20 Balance disc key

4 Mechanical seal 21 Cavity cover

5 Mechanical seal shaft washer 22 Balance disc

6Rotating seal retaining ring 23 Cavity cover O-ring

7 Inlet O-ring 24 Discharge housing O-ring

8 Inlet ring 25 Balance disc atwasher

9Di󰀨user bearing 26 Balance disc lockwasher

10 Floating neck ring 27 Balance disc nut

11 Di󰀨user 28 Discharge housing retaining ring

12 Clamping neck ring 29 Pump shaft

13 Split cone nut 30 HP shaft bushing anti-roll pin (if equipped)

14 Impeller 31 HP shaft bushing (if equipped)

15 Split cone 32 HP shaft bushing O-ring (if equipped)

16 Series ange O-ring 33 HPSC O-ring (if equipped)

17 Discharge ring 34 HPSC retaining ring (if equipped)

MSSTM Series

- 12 -

Mechanical Seal—Standard

ELECTRICAL HAZARD

Make sure to disconnect the power supply to

the motor before carrying out component re-

placement procedures. Follow all Lock out/Tag

out procedures developed by your company

before starting any maintenance or repair.

Mechanical Seal Removal

1. Drain the piping and pump.

2. Disconnect the inlet and outlet piping.

3. Loosen the screws and remove the coupling

guards.

Figure 7 - Support Bracket Anchor Bolt

Removal

Figure 6 - Coupling Guard Removal

123

456

Figure 5 - Mechanical Seal Components

Pump Overhaul Continued

Mechanical Seal Removal

Item Description

1Shaft retaining ring

2Shaft washer

3Mechanical seal

4Stationary seal (with O-ring)

5Inlet washer

6Inlet retaining ring

4. Remove the anchor bolts and washers from

shell support bracket(s).

MSSTM Series

- 13 -

7. Install the alignment pins to prevent damage

to mechanical seal and carefully slide pump

30.5 cm (12 inches) away from motor.

NOTES: Make sure to support inlet end of the

pump on support bracket(s).

6. Remove the nuts and the top cradle from the

precision leveling foot.

Figure 10 - Separating Pump From Motor

Figure 9 - Top Cradle Removal

Figure 8 - Motor Adapter Bolt Removal

5. Remove the motor adapter bolts and wash-

ers.

Pump Overhaul Continued

MSSTM Series

- 14 -

10. Remove the inlet retaining ring from the

inlet housing.

9. Remove the motor adapter and shipping

plug from the inlet housing.

Figure 13 - Removing Inlet Retaining Ring

Figure 12 - Removing Motor Adapter and

Shipping Plug

Figure 11 - Removing Inlet Housing Bolts

Pump Overhaul Continued

8. Remove the inlet housing bolts and washers

from inlet housing.

MSSTM Series

- 15 -

Mechanical Seal Installation

1. Install the new shaft washer onto pump

shaft and slide the washer against the shaft

retaining ring.

Figure 16 - Installing Shaft Washer

Figure 15 - Inspecting Retaining Ring, Pump

Shaft and Bore

YES

Figure 14 - Mechanical Seal Removal

12. Inspect the pump shaft, the shaft retaining

ring, the inlet seal bore and the pump shaft

for any damage. Remove any oil or dirt with

a clean cloth.

11. Apply soap and water to the shaft and us-

ing a suitable tool through the inlet housing,

gently push the shaft washer, mechanical

seal, stationary seal, and inlet washer to-

ward the end of the shaft and remove.

NOTES: Make sure to push the washer only.

Do not push on the shaft retaining ring or dam-

age may occur.

NOTES: The shaft retaining ring does not need

to be removed unless it is distorted or corroded

and needs replacement.

Pump Overhaul Continued

MSSTM Series

- 16 -

4. Install the shipping plug into the motor

adapter seat.

3. Press in on the inlet washer and install the

inlet retaining ring into the groove on the

inlet housing.

NOTES: Make sure the inlet retaining ring is

completely seated in the inlet housing groove.

Figure 19 - Installing Shipping Plug

Figure 18 - Installing Inlet Retaining Ring

Figure 17 - Installing Mechanical and

Stationary Seals

Pump Overhaul Continued

2. Slide the new mechanical shaft seal followed

by the new stationary seal and inlet washer

onto shaft.

MSSTM Series

- 17 -

7. Carefully slide the pump against the mo-

tor making sure the pump shaft key slides

smoothly into the exible coupling. Push the

pump by hand until the motor adapter and

motor are in contact.

NOTES: Make sure pump key shaft does not

jam or fall out during installation.

8. Refer to Final Pump Alignment from the MSS

Installation/ Operation Manual.

6. Apply system compliant anti-seize com-

pound into the pump shaft keyway and

install the pump shaft key.

NOTES: Key should t securely with rounded

end facing toward the pump.

5. Secure the inlet housing to the motor adapt-

er with the inlet housing bolts and lock

washers. Tighten to torque value specied

in the Fastener Torque Specications sec-

tion of this manual.

Pump Overhaul Continued

Figure 22 - Attaching Pump to Motor

Figure 21 - Installing Pump Shaft Key

Figure 20 - Installing Inlet Housing Bolts

MSSTM Series

- 18 -

Mechanical Seal—Optional High Inlet

Pressure Design

ELECTRICAL HAZARD

Make sure to disconnect the power supply to

the motor before carrying out component re-

placement procedures. Follow all Lock out/Tag

out procedures developed by your company

before starting any maintenance or repair.

HPSC Mechanical Seal Removal

1. Perform Steps 1 through 7 in Mechanical

Seal Removal removal procedure.

2. Disconnect the drain line and vent line(s)

from the high pressure seal carrier.

Figure 24 - Disconnecting Drain/ Vent Lines

1234

78 9 10 11

Figure 23 - High Pressure Seal Carrier Components

Pump Overhaul Continued

Optional High Inlet Pressure Seal Replacement

Item Description Item Description

1HP shaft bushing retaining ring 7 Shaft washer

2HP shaft bushing O-ring 8 Mechanical seal

3HP shaft bushing 9 Stationary seal

4 Shaft retaining ring 10 Inlet washer

5 High pressure seal carrier O-ring 11 Inlet retaining ring

6High pressure seal carrier

MSSTM Series

- 19 -

Figure 27 - Removing High Pressure Seal

Carrier

Figure 26 - Removing Motor Adapter and

Shipping Plug

Figure 25 - Removing Inlet Housing Bolts

5. Remove the high pressure seal carrier from

the inlet housing.

4. Remove the motor adapter and shipping

plug from the inlet housing.

3. Remove the bolts and lock washers from the

inlet housing.

Pump Overhaul Continued

MSSTM Series

- 20 -

Figure 30 - Removing Graphite Sleeve

Components

Figure 29 - Removing High Pressure Seal

Carrier O-Ring

Figure 28 - Removing Seal Components

8. Remove the shaft retaining ring, HP shaft

bushing and O-ring.

NOTES: If retaining ring appears worn or dis-

torted, replace it.

NOTES: The graphite shaft sleeve retaining

ring does not need to be removed unless it is

distorted or corroded and needs replacement.

7. Remove the high pressure seal carrier O-

ring.

6. Remove the inlet retaining ring, inlet washer,

stationary seal, mechanical seal and shaft

washer carrier.

Pump Overhaul Continued

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