Alfalaval Mainstream User manual

ESE03379-ENUS2 2018-10
Original manual
Instruction Manual
Mainstream®and Streamline®Filter/Strainer

Table of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
1. Safety .................................................................................................... 4
1.1. Important Safety Information .................................................................... 4
2. Introduction ............................................................................................ 5
2.1. General Information ............................................................................... 5
3. Installation .............................................................................................. 6
3.1. Unpacking ......................................................................................... 6
3.2. Pipeline Installation ............................................................................... 6
3.3. Assembling the Mainstream Stand .............................................................. 7
4. Operation ............................................................................................... 9
4.1. Recommended cleaning ......................................................................... 9
4.2. Starting the System ............................................................................... 10
5. Maintenance ........................................................................................... 11
5.1. Mainstream Filter/Strainer - Disassembly ....................................................... 11
5.2. Mainstream Filter/Strainer - Reassembly ....................................................... 13
5.3. Streamline Basket Filter/Strainer - Disassembly ............................................... 16
5.4. Steamline Basket Filter/Strainer - Reassembly ................................................ 17
5.5. Changing the Filter Media ........................................................................ 18
5.6. Streamline Models FM/SM and FMS/SMS ..................................................... 19
6. Troubleshooting ....................................................................................... 20
6.1. Troubleshooting Guidelines ...................................................................... 20
7. Spare Parts Lists ...................................................................................... 21
7.1. SESR Mainstream Strainers Short & Long ..................................................... 21
7.2. SEFR Mainstream Filters Short & Long ......................................................... 23
7.3. SEBR/SEBW Mainstream Strainers Short & Long ............................................ 25
7.4. Inline Filters/Strainers FM/SM ................................................................... 27
7.5. Side Inlet Filters/Strainers FSM/SMS ........................................................... 29
3

1 Safety
Always use Alfa Laval genuine spare parts.
The warranty of Alfa Laval products is dependent on the use of Alfa Laval genuine spare parts.
1.1 Important Safety Information
Safety is very important! DO NOT attempt to modify any Alfa Laval product. To do so could create unsafe conditions and void
all warranties. DO NOT place any Tri-Clover product in an application where general product service ratings are exceeded.
The following DANGER, WARNING,andCAUTION signs and their meanings are used within these instructions.
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. The word Danger is
used in the most extreme cases.
WARNING
Indicates that special procedures must be followed to avoid damage to the valve.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. May also be used to
alert against an unsafe operating or maintenance practice.
4

2 Introduction
2.1 General Information
Description
Both Streamline and Mainstream Filters and Strainers are perfect solutions for continuous processing operations.
Mainstream filters and strainers are suitable for vertical mounting using an optional stand, wall mount brackets, or other external
means. The Streamline filters and strainers are suitable for horizontal or vertical mounting, directly into the pipe work.
Both Streamline and Mainstream filters and strainers can use a twin setup. A twin filter or strainer setup consists of two
complete units mounted onto a single stand. Directional valves at the inlet and outlet ports allow one unit to operate while the
filter media in the other unit is being changed or cleaned.
Both Mainstream and Streamline filters and strainers are available in long or short models, with standard construction of stainless
steel. All Mainstream models have side-entry ports. Streamline models have ports either at both ends (model SM or FM), or with
a side inlet, bottom discharge configuration (model SMS or FMS).
Filter Versus Strainer (Mainstream Example Used)
When used as a filter, the unit contains a basket with a disposable bag that allows you to remove undesirable particles from a
liquid or gas (down to 0.5 microns).
A strainer contains a perforated stainless steel basket, v-shaped wire basket, or wire mesh basket that allows you to remove
larger particles (from 73 microns and higher) from the process stream.
Filter/Strainer Options
Mainstream
SEF Mainstream Filter: allows filtering from 0.5 micron to 800 micron using a filter bag.
SES Mainstream Strainer: allows medium or fine straining with either a perforated metal basket (0.033 or 0.062 diameter
perforations) or a wire mesh basket with 20, 40, 60, 80, 100, 150, or 200 mesh. Suited for straining particles
down to 73 micron.
SEB Mainstream Strainer Basket: allows course straining of large particles and foreign matter using large perforations
(0.5, 0.25, 0.125, and 0.09375 diameter).
SEBHVW Mainstream Strainer Basket: allows for fine straining using a v-shaped (Vee-Wire®) basket with wire gaps of 0.005,
0.0075, 0.010, 0.015, 0.020, 0.025, 0.030, and 0.035.
Note: Minimum rating per 3A standard for Vee-Wire applications is 125 microns (0.005 gap.) Vee-Wire is a
registered trademark of U.S. Filter.
Note: 3A does not approve the use of wire mesh baskets or over screens.
Streamline
SM/FM Streamline in-line filter or strainer: allows you to strain or filter using either an overscreen or a filter sock. Suited for
coarse to medium straining ¼" to 200 mesh, or filtering 765 to 40 micron.
SMS/FMS Streamline in-line filter or strainer: allows you to strain or filter using either an overscreen or a filter sock. Suited for
coarse to medium straining ¼" to 200 mesh, or filtering 765 to 40 micron.
5

3 Installation
3.1 Unpacking
The Streamline filter/strainer comes completely assembled, and ready to install. The Mainstream filter/strainer must be
assembled.
When you unpack the Mainstream filter or strainer, remove the special packing inside the unit. For both the Mainstream and
Streamline units, check for damage that could have occurred during shipping. Report any damage to the carrier.
3.2 Pipeline Installation
Mainstream
Unless otherwise specified, all Mainstream units operate in
a vertical position. Flow translates from the side inlet to the
discharge on the bottom.
Mainstream
Streamline
All Streamline models can operate in any position. Flow for
the standard Streamline versions translates from the inlet
assembly to the discharge on the body. Flow for the side inlet
unit translates from the inlet on the side of the body to the
discharge at the bottom of the body.
6

3 Installation
3.3 Assembling the Mainstream Stand
1. Remove the triangular base (A) and three right angle adjustable brackets (B) from the packing.
2. Assemble one bracket bolt combination (B) into each of the three slotted base holes with the washer on the underside of the
base and the flat face of the rubber cushion toward the base center. Adjust the three brackets* to the widest opening for the
housing, and partially tighten nuts but do not secure nuts until the housing is placed in stand.
*Note: Slotted holes allow for adjustment so that housing top surface can be level when assembly is placed on uneven floor.
3. Attach the three legs (D) to the triangular base (A) with the plastic or rubber caps upright and notched leg surface to the
outside. Partially tighten the legs, but do not secure bolts (E) until the housing is placed in the stand.
4. Take the retainer ring (F) and orient the three tab slot openings (G) with the three slots so that the tabs (longer tab slot is
down) are located between the notches and plastic/rubber cushion. This will allow the three legs to be opened greater than
the diameter of the housing. The leg notches provide friction to hold legs securely against the housing during process
operations. The retainer ring assembly anchors the legs in place.
5. Place stand assembly in a location that Filter/Strainer housing is to be installed.
6. Lower the housing through the stand retaining ring (F), so that the outlet port fits into the stand base hole (H). (Adjustable
brackets should be wide enough so that no interference occurs between the legs and the housing.)
7. Adjust the angle of the brackets (B) to contact housing, and partially secure in place.
8. Press the tops of the 3 legs (D) on the stand inward so that they rest against the housing. Secure the inlet and outlet process
lines to housing. (See Pipeline Installation.)
9. Lock the retaining ring (F) onto the grooves of the legs (D). Gently use a rubber hammer to secure the ring onto the grooves.
10. Tighten the adjustable brackets (B) and leg bolts (E).
7

3 Installation
E
B
D
F
H
G
A
8

4Operation
4.1 Recommended cleaning
Study the instructions carefully and pay special attention to the warnings!
The strainer housing is designed for cleaning in place (CIP). CIP = Cleaning In Place.
NOTE: All internal components of the filter/strainers must be removed for cleaning (COP) = Cleaning Out Of Place.
Warning: Reverse flow or back flushing through either type filter or strainer can result to damage to the internal
components.
Step 1
Always handle lye and acid with great care
Caustic danger!
Always use rubber
gloves!
Always use protective
goggles!
Step 2
Never touch the filter/strainer or the pipelines during cleaning
Danger of burns!
Step 3
Examples of cleaning agents: Use clean water, free from chlorides. NaOH = Caustic Soda. HNO3=Nitricacid.
1. 1% by weight NaOH at 70°C (158°F).
1kg(2.2lb) +100l(26.4gal) =Cleaningagent.
NaOH water
2.2 l (0.6 gal) +100l(26.4gal) =Cleaningagent.
33% NaOH water
2. 0.5% by weight HNO3at 70°C (158°F).
0.7 l (0.2 gal) +100l(26.4gal) =Cleaningagent.
53% HNO3water
1. Avoid excessive concentration
of the cleaning agent
⇒Dose gradually!
2. Adjust the cleaning flow to the
process.
Sterilisation of milk/viscous
liquids
⇒Increase the cleaning flow!
9

4Operation
Step 4
!
Always rinse well with clean water after using a cleaning agent.
NOTE
Cleaning agents must be stored/disposed of in accordance with
current regulations/directives.
Always rinse!
Clean water Cleaning agent
4.2 Starting the System
Important: When installing new non-woven (felt) filter media, recirculate the process fluid through the filter. This will capture loose
fibers before they go down stream.
Mainstream
Ensure that the correct port is used for the inlet. (See figure.)
Starting the Filter System
Open the vent valve slightly. Gradually fill the vessel by opening the inlet valve slowly. Close the vent valve when liquid emerges.
Do not exceed a 10 psi differential across the bag.
Starting the Strainer System
Open the vent valve slightly. Gradually fill the vessel by opening the inlet valve slowly. Close the vent valve when liquid emerges.
Streamline
Ensure that you are using the proper inlet. (See figures.)
10

5 Maintenance
AlwaysuseAlfaLavalgenuinespareparts.
5.1 Mainstream Filter/Strainer - Disassembly
WARNING
Before disassembling any Mainstream filter or strainer, make certain that the system is
not under pressure and that the system is drained of all liquids. Release pressure inside
filter or strainer by opening the relief valve before disassembling.
Note: The cover of new Mainstream filters/strainers have three legs on the cover that
rest on the screen ring assembly of the SEF, the support assembly of the SES or the
basket of the SEB/ SEBHVW. Older models do not have legs on the cover.
Mainstream SEF
1. Open the air relief valve (04) to relieve all pressure inside the filter.
2. Remove the clamp (06) and lift off the filter cover (05).
3. Remove the cover gasket (40) and inspect for damage or wear.
4. Lift the screen ring assembly (02-1) from the filter body (01) using the cam pin (02-4)
as a handle. Do not use the cam handle (02-5) to remove the assembly.
5. Disassemble the screen ring assembly handle:
A. Force/deflect the cam handle (02-5) up from the retaining ring (04) toward center
of the screen ring assembly (02-1).
B. Push one end of the cam pin (02-4) through the cam locks (02-6) until the cam
locks, pin, and handle (02-5) are free of each other.
6. Remove the retaining ring (02-2), and remove the filter bag (02-2) from the basket
and replace as necessary.
7. Remove the o-ring (324) from the inside diameter of the screen ring assembly and
inspect for damage and wear.
8. Remove the o-ring (190) from the outside diameter of the screen ring assembly and
inspect for damage and wear.
Mainstream Filter Type SEF
11

5 Maintenance
Always use Alfa Laval genuine spare parts.
Mainstream SES
1. Open the air relief valve (04) to relieve all pressure inside the
strainer.
2. Remove the clamp (06) and lift off the strainer cover (05).
3. Remove the cover gasket (40) and inspect for damage or wear.
4. Lift the strainer ring support assembly (03) and strainer ring
assembly (02A) out of the strainer body (01) using the support
assembly handle. Then remove the handle.
Note: The support assembly may stick to the housing due to
product residue. In this case use a rubber mallet to jar the support
assembly loose before attempting to lift it out of the strainer body.
5. Grasp the upper lip of the strainer ring assembly (02A), and lift it
out of the strainer ring support assembly (03).
6. Remove the support plate (08A) from the strainer ring support
assembly (03).
7. Remove the o-ring (326) from the strainer ring assembly, and
inspect for damage or wear.
8. Remove the o-ring (190) from the strainer ring support assembly,
and inspect for damage or wear.
Mainstream SEB and SEBHVW
1. Open the air relief valve (04) to relieve all pressure inside the
strainer.
2. Remove the clamp (06) and lift off the strainer cover (05).
3. Remove the cover gasket (40) and inspect for damage or wear.
4. Using the handle at the top of the strainer ring assembly (02), lift
the assembly out of the strainer body (01).
Note: The assembly may stick to the strainer body due to product
residue. In this case use a soft rubber mallet to jar the screen loose
before attempting to lift it out of the support assembly.
5. Remove the o-ring (190) from the strainer ring assembly (02),
and inspect for damage or wear.
Mainstream Strainer
Type SES
(perforated screen shown)
Mainstream Strainer
Type SEB
(see Parts list
for exploded view
of SEBHVW)
12

5 Maintenance
AlwaysuseAlfaLavalgenuinespareparts.
5.2 Mainstream Filter/Strainer - Reassembly
Note: The cover of new Mainstream filters/strainers have three legs on the cover that
rest on the screen ring assembly of the SEF, the support assembly of the SES or the
basket of the SEB/ SEBHVW. Older models do not have legs on the cover.
Mainstream SEF
1. Lubricate the o-ring (190) that seals the filter body (01) with a food grade silicone
spray and place it on the outside diameter of the screen ring assembly (02-1).
2. Place the screen ring assembly o-ring (324) on the inside diameter of the assembly.
3. Insert the filter media (03) inside the screen ring assembly (02-1), pressing against
the sides and bottom of the bag to ensure that the bag is smooth against the sides
and bottom of the assembly. The filter bag should rest on top of the screen ring
assembly o-ring (324).
4. Assemble the screen ring assembly handle:
A. Align the cam locks (02-6) with the notch on the handle (02-5) and the holes in
the support ring.
B. Slide the cam pin (02-4) through the cam locks (02-6) until each end of the pin
rests in the holes in the tabs on the screen ring assembly (02-1) ring.
C. Insert the retaining ring (02-2), (tapered rim downward), and fold the handle (02-5)
to the locked position.
5. Using the cam pin (02-4) as a handle, lift the screen ring assembly (02-1) into the filter
body (01), ensuring that it is snugly seated in the bottom of the body.
Note: The rim of the screen ring assembly should rest just below the inside diameter of
the inlet port when properly assembled.
6. Place the gasket (40) and cover (05) on the top of the body (01).
Note: The cover of new Mainstream filters/strainers have three legs on the cover that
rest on the screen ring assembly. Older models do not have legs on the cover.
7. Attach and tighten the clamp (06).
Mainstream Filter
Type SEF
13

5 Maintenance
Always use Alfa Laval genuine spare parts.
Mainstream SES
1. Lubricate the o-ring (190) that seals the strainer body (01) with a food grade silicone
spray and place on the outside diameter of the strainer ring support assembly (03).
2. Place the strainer ring support assembly (03) inside the strainer body (01) so that it
rests snugly on the bottom of the body.
3. . If you are using a wire mesh strainer, place the strainer support plate (08A) inside
the strainer support with the rim facing downward. If you are using a perforated
strainer, place the strainer support plate(08A)insidethestrainersupportwiththe
rim facing upward.
4. Lubricate the o-ring (326) that seals the strainer ring assembly (02A) with a food
grade lubricant (L-1011B) and place it on the outside diameter of the strainer ring
assembly (02).
5. Place the strainer ring assembly (02A) inside the strainer ring support assembly
(03) so that the bottom strainer ring assembly rests snugly on the strainer support
plate (08 or 08A).
6. Place the handle on the strainer ring support assembly (03) by compressing the
handle and sliding the ends into the two holes on the assembly. Once the handle is
attached, lay it flat against the strainer support ring assembly.
7. Place the gasket (40) and cover (05) on the top of the strainer body (01).
8. Attach and tighten the clamp 06).
Mainstream Strainer
Type SES
(perforated screen shown)
14

5 Maintenance
AlwaysuseAlfaLavalgenuinespareparts.
Mainstream SEB/SEBHVW
1. Lubricate the o-ring (190) that seals the strainer body (01) with a food grade silicone
spray and place it on the outside diameter of the strainer ring assembly (02).
2. Place the strainer ring assembly (02) inside the body (01) so that the support ring on
the assembly rests snugly against the lip inside the body.
Note: Fold the basket handle down over the support ring assembly.
3. Place the gasket (40) and cover (05) on the top of the strainer body (01).
4. Attach and tighten the clamp (06).
Mainstream Strainer
Type SEB
(see Parts list
for exploded view
of SEBHVW)
15

5 Maintenance
Always use Alfa Laval genuine spare parts.
5.3 Streamline Basket Filter/Strainer - Disassembly
WARNING
Make certain that the strainer system is not under pressure and that
the system is drained of all liquids before removing any Streamline
strainer from pipe work.
Model SM/FM
1. Remove the clamp (13) and lift off the inlet assembly (01). Note:
Apply pressure to the inlet assembly when you remove the
clamp, as the strainer/filter spring will force the inlet assembly
away from the body when the clamp is removed.
2. Remove the gasket (40) and inspect it for damage or wear.
3. Remove the spring (07), distributor cap (06), and back up tube
(09).
4. Change the filter sock or overscreen if necessary. Refer to
Changing the Filter Media later in this manual for details.
Model SMS/FMS
1. Remove the clamp (13) and lift off the cap (01).
Note: Apply pressure to the cap when you remove the clamp, as
the strainer/filter spring will force the cap away from the body when
the clamp is removed.
2. Remove the gasket (40) and inspect it for damage or wear.
3. Remove the spring (07), distributor cap (06), and back up tube
(09).
4. Change the filter sock or overscreen if necessary. Refer to
Changing the Filter Media later in this manual for details.
Streamline Strainer
Type SMS
16

5 Maintenance
AlwaysuseAlfaLavalgenuinespareparts.
5.4 Steamline Basket Filter/Strainer - Reassembly
Model SM/FM
1. Ensure that the filter media is in place on the back up tube (09).
Refer to Changing the Filter Media, later in this manual.
2. Place the gasket (40) on the inlet assembly (01).
3. Place the back up tube (09) in the filter body (02).
4. Press the distributor cap (06) onto the back up tube (09).
5. Press the spring (07) onto the outside diameter of the distributor
cap.
6. Press the inlet assembly (01) over the entire assembly and
compress it to the filter body (02).
7. Attach and tighten the clamp (13).
Model SMS/FMS
1. Ensure that the filter media is in place on the back up tube (09).
Refer to Changing the Filter Media, later in this manual.
2. Insert the back up tube (09) inside the body (02) ensuring that
the bottom of the back up tube is seated firmly against the
bottom of the body.
3. Insert the distributor cap (06) inside the body (02) ensuring that
the cap is seated firmly against the top of the back up tube (09).
Note: The opening on the handle of the distributor cap should be
facing the opening of the inlet port so that the port is not blocked.
4. Insert the spring (07) inside the body (02) ensuring that the spring
is seated firmly against the ridge on the distributor cap (06).
5. Place the gasket (40) on the body (02).
6. Compress the cap (01) onto the body (02), and attach and
tighten the clamp (13).
Streamline:
Model SMS
17

5 Maintenance
Always use Alfa Laval genuine spare parts.
5.5 Changing the Filter Media
WARNING
Make certain that the strainer system is not under pressure and that the system is drained of all liquids. Release pressure inside
filter/strainer by opening the relief valve before replacing the bag.
Important: When installing a filter bag, remove the tag and save it. The tag will help you identify your filter type when reordering.
1. Open the air relief valve to relieve all pressure inside the
filter. Make certain the filtration system is drained of all
liquid. Residual can result in the bag floating and not seating
properly.
2. Remove the filter cover, and lift the screen ring assembly
from the housing using the cam pin as a handle. (Do not use
the filter strainer handle to remove the basket assembly.)
3. Raise the assembly handle upward toward the center of the
assembly to unlock the handle.
4. Remove the filter media retainer ring that secures the basket
filter bag onto the o-ring.
5. Withdraw the filter bag from the basket and discard.
For basket filter bags that are nearly filled, it may be
necessary to disassemble the cam lock assembly in order
to remove the filled bag. (Refer to Mainstream Filter/Strainer
Disassembly earlier in this manual for more information on
disassembly the cam lock assembly.)
Note: Where ID filter tags are used (fine filtration bags), remove
the tag and set aside. The lot number on this tag can be an
important piece of information.
6. Insert a new bag into the basket, contouring the bag against
the basket, making sure it fits smoothly against the sides
and bottom of the basket.
7. Reinstall the o-ring, cam lock assembly (if necessary), and
retainer ring, and lock bag in place. (See the Mainstream
Filter/Strainer - Reassembly section for details.)
8. Install the screen ring assembly into the housing.
9. Close the cover, and replace and tighten the clamp.
18

5 Maintenance
AlwaysuseAlfaLavalgenuinespareparts.
5.6 Streamline Models FM/SM and FMS/SMS
Important: When installing a filter sock or overscreen, save the original packaging. This will help you identify your filter media
type when reordering.
1. Relieve all pressure inside the system and make certain the
filtration system is drained of all liquid.
2. Remove the outlet assembly (for model FM or SM) or the
filter/strainer cap (for model FMS or SMS).
3. Remove the spring, distributor cap, and back up tube from
the body.
4. If you are using an overscreen, slide the overscreen off of
the backup tube, clean it or replace it, and go to Step 8.
5. If you are using a filter sock, remove the retaining rings on
both ends of the back up tube, and slide the sock off of
the tube.
6. Insert a new bag into the basket, contouring the bag against
the basket, making sure it fits smoothly against the sides
and bottom of the basket.
7. Replace the back up tube, distributor, and spring inside
the housing. (For detailed information, refer to Streamline
Filter/Strainer - Reassembly earlier in this manual.)
8. Compress the outlet assembly (for model FM) or the cap
(model FMS) onto the body, and attach and tighten the
clamp.
19

6 Troubleshooting
6.1 Troubleshooting Guidelines
The Troubleshooting section chart below applies to problems which may arise during filter or strainer operation. Contact
Alfa Laval if assistance is required.
Problem Probable Cause Remedy
SM: Split in overscreen along length Pump pulsation is causing the screen
to stretch and fold along the length and
cause fatigue and failure
Dampen pulsation, or use a different type
of pump.
SM: Blown out screen Backflushing through the screen. On fine
wire mesh screens, the screen is wrapped
around the O.D. of the back up tube,
which provides support for the designed
direction of flow. No such support exists
to protect the screen in a reverse flow
pattern. Even a momentary reverse flow
spike can lead to this problem.
Protect the system from backflush by
installing check valves or relief lines.
SM: Holes in screen Differential pressure too high. Stop and clean screen, or change media
at 10 psi ∆P.
FM: Torn filter
SEF: Bag blown through
Either the filter bag is not contoured to
the support basket, or a momentary
backflow has pushed the bag away from
the support basket.
See Filter Bag Replacement for proper
installation instructions. Install backflow
prevention devices or pressure relief
devices as appropriate.
SES: Screen folded or crushed Backflushing through the screen. On
fine wire mesh screens, a coarser screen
wrappedaroundtheO.D.ofthefine
screen provides support for the designed
direction of flow. No such support exists
to protect the screen in a reverse flow
pattern. Even a momentary reverse flow
spike can lead to this problem.
Protect the system from backflush by
installing check valves or relief lines.
SES: Bottom of screen has damaged
wire mesh or is blown out
Support plate not installed or installed
incorrectly. On the finer wire mesh
screens, the support plate at the
immediate exterior of the bottom of the
basket provides a solid support against
differential pressure due to clogging. In
some cases, the plate is not installed or
installed upside down, allowing the screen
to fatigue under strain and ultimately give
way to pressure.
Install support plate correctly as described
under Mainstream Filter/Strainer
Reassembly earlier in this manual.
SES: Screen ring support assembly is
difficult to remove from housing.
Dried product, especially sticky sugar
type solutions, can cause the o-ring seal
to bind on the housing.
Grasp the strainer assembly handle and
twist the assembly in the housing to break
the o-ring free. Then lift the assembly out
of the housing.
20