Nordson SEE-FLO 7 Reference guide

6(()/2',63(16(5
CUSTOMER PRODUCT MANUAL
COMPONENT MANUAL P/N: 74
ISSUED /20
For parts and technical support, call the Nordson Sealant Equipment customer support at
(Ϯϰϴ) 4ϭϮ-ϳϵϮϬ, or contact your local Nordson Sealant Equipment Representative.
This document is subject to change without notice.
Please check with customer service for the latest version.
Nordson Sealant Equipment٠:L[RP, Michigan٠U.S.A

Part 7439854 E 2016 Nordson Corporation
Nordson Corporation welcomes requests for information, comments, and
inquiries about its products. General information about Nordson can be
found on the Internet using the following address:
http://www.nordson.com.
Notice
This is a Nordson Corporation publication which is protected by copyright.
Original copyright date 08/2016. No part of this document may be
photocopied, reproduced, or translated to another language without the
prior written consent of Nordson Corporation. The information contained
in this publication is subject to change without notice.
Trademarks
Nordson and the Nordson logo are registered trademarks of Nordson
Corporation.
6(()/2LVDWUDGHPDUNof Nordson Corporation.
All other trademarks are the property of their respective owners.

Table of Contents i
Part 7446077
2020 Nordson Corporation
Table of Contents
Safety 1.................................................
Qualified Personnel 1...................................
Intended Use 1.........................................
Regulations and Approvals 2.............................
Personal Safety 2.......................................
High−Pressure Fluids 3..................................
Fire Safety 4...........................................
Halogenated Hydrocarbon Solvent Hazards 4..............
Action in the Event of a Malfunction 5.....................
Disposal 5.............................................
Operation 5............................................
Description 5.............................................
Theory Of Operation 6.....................................
Dispenser 6............................................
Metering Cylinder 6.....................................
Consumable Items And Component Cleaning 8...............
Consumable Items 8....................................
Component Cleaning 9..................................
Maintenance And Cleaning 9...............................
Operation 12..............................................
Priming 12..............................................
Dispenser 12.........................................
Ratio Check Assembly 13..............................
To Mixer Manifold 13...................................
Ratio Adjustment 14...................................
Dispensing Mixed Materials 15..........................
Shutdown 16.........................................
Troubleshooting 17.........................................
Repair 23.................................................
Air Cylinder Assembly Replacement 23.....................
Metering Cylinder Assembly Replacement 26................
Disassembly and Assembly 29...............................
Air Cylinder Assembly 30.................................
Foot Valve Spring Assembly 32............................
High Volume Metering Cylinder Assembly 33................
Disassembly 34.......................................
Assembly 38..........................................
Low Volume Metering Cylinder Assembly 39................
Disassembly 40.......................................
Assembly 41..........................................
Parts 43..................................................
Using the Illustrated Parts List 43..........................
3-Column Parts List 44.................................
Customer Product Manual 45.............................
See Flo 7 Dispenser Parts Illustration 45....................
See−Flo 7 Dispenser Parts List 46.........................
Air Cylinder Parts Illustration 47...........................
Air Cylinder Parts List 48.................................
Foot Valve Spring Assembly Parts Illustration 49.............
Foot Valve Spring Assembly Parts List 49..................
High Volume Metering Cylinder Parts Illustration 50..........
High Volume Metering Cylinder Service Kit 51.............

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Low Volume Metering Cylinder Parts Illustration 52...........
Low Volume Metering Cylinder Service Kit 53.............
Specifications 54...........................................
Dimensions 55.............................................
See−Flo 7 Dispenser 55..................................
Air Cylinder Assembly 56.................................
Foot Valve Spring Assembly 57............................
High Volume Metering Cylinder Assembly 58................
Low Volume Metering Cylinder Assembly 59................
Metering Cylinder Service Tools Part List 60..............

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See−Flo 7 Dispenser
Safety
Read and follow these safety instructions. Task- and equipment-specific
warnings, cautions, and instructions are included in equipment
documentation where appropriate.
Make sure all equipment documentation, including these instructions, is
accessible to all persons operating or servicing equipment.
Qualified Personnel
Equipment owners are responsible for making sure that Nordson
equipment is installed, operated, and serviced by qualified personnel.
Qualified personnel are those employees or contractors who are trained
to safely perform their assigned tasks. They are familiar with all relevant
safety rules and regulations and are physically capable of performing
their assigned tasks.
Allow only qualified personnel to perform the tasks outlined in this
manual.
Intended Use
Use of Nordson equipment in ways other than those described in the
documentation supplied with the equipment may result in injury to persons
or damage to property.
Some examples of unintended use of equipment include:
Using incompatible materials
Making unauthorized modifications
Removing or bypassing safety guards or interlocks
Using incompatible or damaged parts
Using unapproved auxiliary equipment
Operating equipment in excess of maximum ratings
Only for use in automated work cells with appropriate safety guarding
and lockout devices.

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Regulations and Approvals
Make sure all equipment is rated and approved for the environment in which
it is used. Nordson equipment warranties may be voided if instructions for
installation, operation, and service are not followed.
All phases of equipment installation must comply with all federal, state, and
local codes.
Personal Safety
To prevent injury, follow these instructions.
Safety glasses are to be worn at all times while installing, servicing,
operating, or observing equipment. The sudden release of air or fluid
can cause damage to eyes.
Relieve system and material pressure before disconnecting hoses.
Do not operate equipment unless safety guards, doors, or covers are
intact and automatic interlocks are operating properly. Do not bypass or
disarm any safety devices.
Keep clear of moving equipment. Before adjusting or servicing any
moving equipment, shut off the power supply and wait until the
equipment comes to a complete stop. Lock out power and secure the
equipment to prevent unexpected movement.
Relieve (bleed off) hydraulic and pneumatic pressure before adjusting or
servicing pressurized systems or components. Disconnect, lock out, and
tag switches before servicing electrical equipment.
Operating faulty electrostatic equipment is hazardous and can cause
electrocution, fire, or explosion. Make resistance checks part of your
periodic maintenance program.
If you receive even a slight electrical shock, shut down all electrical and
electrostatic equipment immediately. Do not restart the equipment until
the problem has been identified and corrected.
Obtain and read Safety Data Sheets (SDS) for all materials used. Follow
the manufacturer’s instructions regarding the safe handling and use of
materials. Use recommended personal protection devices.
Make sure the dispensing area is adequately ventilated.
To prevent injury, be aware of less-obvious dangers in the workplace
that often cannot be completely eliminated, such as hot surfaces, sharp
edges, energized electrical circuits, and moving parts that cannot be
enclosed or otherwise guarded for practical reasons.

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High−Pressure Fluids
High pressure fluids, unless they are safely contained, are extremely
hazardous. Always relieve fluid pressure before adjusting or servicing high
pressure equipment. A jet of high−pressure fluid can cut like a knife and
cause serious bodily injury, amputation, or death. Fluids penetrating the skin
can also cause toxic poisoning. If you suffer a fluid injection injury, seek
medical care immediately.
WARNING: Any injury caused by high pressure liquid can be serious. If you
are injured or even suspect an injury:
Go to an emergency room immediately.
Tell the doctor that you suspect an injection injury.
Inform medical staff regarding the type of material dispensed.
MEDICAL ALERT − AIRLESS SPRAY WOUNDS: NOTE TO A PHYSICIAN
Injection into the skin is a serious traumatic injury. It is important to treat the
injury surgically as soon as possible. Do not delay treatment to research
toxicity. Toxicity is a concern with some exotic coatings injected directly into
the bloodstream. Consultation with a plastic surgeon or a reconstructive
hand surgeon may be advisable. The seriousness of the wound depends on
where the injury is on the body, whether the substance hit something on its
way in and deflected causing more damage, and many other variables
including skin micro−flora residing in the plant or gun which are blasted into
the wound. If the injected material contains acrylic latex and titanium dioxide
which damages the tissue’s resistance to infection, bacterial growth will
flourish. The treatment that doctors recommend for an injection injury to the
hand includes immediate decompression of the closed vascular
compartments of the hand to release the underlying tissue distended by the
injection material, judicious wound debridement, and immediate antibiotic
treatment.

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Part 7446077 2020 Nordson Corporation
Fire Safety
To avoid a fire or explosion, follow these instructions:
Shut down all equipment immediately if you notice static sparking or
arcing. Do not restart the equipment until the cause has been identified
and corrected.
Do not smoke, weld, grind, or use open flames where flammable
materials are being used or stored.
Do not heat materials to temperatures above those recommended by
the manufacturer. Make sure heat monitoring and limiting devices are
working properly.
Provide adequate ventilation to prevent dangerous concentrations of
volatile materials or vapors. Refer to local codes or your SDS for
guidance.
Do not disconnect live electrical circuits while working with flammable
materials. Shut off power at a disconnect switch first to prevent sparking.
Know where emergency stop buttons, shutoff valves, and fire
extinguishers are located. If a fire starts in a spray booth, immediately
shut off the spray system and exhaust fans.
Shutoff electrostatic power and ground the charging system before
adjusting, cleaning, or repairing electrostatic equipment.
Clean, maintain, test, and repair equipment according to the instructions
in your equipment documentation.
Use only replacement parts that are designed for use with original
equipment. Contact your Nordson Representative for parts information
and advice.
Be sure to have a fire extinguisher on hand. Ensure ventilation is
adequate and follow all other safety guidelines as recommended by the
chemical manufacturer.
Halogenated Hydrocarbon Solvent Hazards
Do not use halogenated hydrocarbon solvents in a pressurized system that
contains aluminum components. Under pressure, these solvents can react
with aluminum and explode, causing injury, death, or property damage.
Halogenated hydrocarbon solvents contain one or more of the following
elements:
Element Symbol Prefix
Fluorine F “Fluoro−”
Chlorine Cl “Chloro−”
Bromine Br “Bromo−”
Iodine I “Iodo−”
Check your material SDS or contact your material supplier for more
information. If you must use halogenated hydrocarbon solvents, contact
your Nordson Sealant representative for information about compatible
Nordson Sealant Equipment components.

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Action in the Event of a Malfunction
If a system or any equipment in a system malfunctions, shut off the system
immediately and perform the following steps:
Disconnect and lock out electrical power. Close pneumatic shutoff
valves and relieve pressure.
Identify the reason for the malfunction and correct it before restarting the
equipment.
Disposal
Dispose of equipment and material used in operation and servicing
according to federal, state, and local codes.
Operation
CAUTION:
Prime/purge system prior to commencing system operation.
Relieve air and material pressure when equipment is not in use for
prolonged periods of time. Do not allow pressure to remain static when
equipment is idle as this may cause material to pack and harden.
Description
The See−Flo 7 is a production proven meter/mix dispense system. It is an air cylinder powered, variable ratio
meter for low to medium viscosity, two component adhesives, sealants, or potting compounds, operating in
either a continuous flow or shot mode. Component metering is accomplished through the use of positive
displacement, double acting metering cylinders, which precisely proportions fluids continuously, requiring no
reload time. The dispenser has the unique ability to meter, mix, and dispense materials in either continuous
flow mode (operator controlled) or in shot mode (preset volume). Mode selection is accomplished by
changing the mechanical configuration of the meter and by outfitting it with the appropriate controls. The
ratio of metered fluids is adjusted by repositioning one of the system’s pair of metering cylinders. The range
of ratio adjustment is determined by the combination of the metering cylinders selected for use in an
application. There are several metering cylinders available which allow many ratios for users to elect. The
dispenser may be outfitted with a large selection of static and dynamic mixing devices, including no flush
disposable static mixers. A wide variety of dispense valves are available for integration with this system so
that it may be tailored to suit a vast array of applications. Many types of supply equipment are compatible
with this equipment, ranging from gravity feed to pressure vessels and pumps.

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Theory Of Operation
Dispenser
An air cylinder is attached to the free end of a fulcrum bar. The opposite end of the fulcrum bar is attached to
a pivot. Both the air cylinder and the pivot end of the fulcrum bar are mounted to the frame. As the air
cylinder is caused to reciprocate (by the system’s controls), the free end of the fulcrum bar is caused to
travel through an arc. Metering cylinders are mounted to the frame, with their metering rods attached to the
fulcrum bar. As the fulcrum bar reciprocates, so do the metering rods of the metering cylinders, causing
pumping action to occur within the metering cylinder.
One of the metering cylinders is positioned directly below the air cylinder. This metering cylinder is allowed to
stroke its’ full length. The second metering cylinder is positioned at a point between the first metering
cylinder and the pivot point at the fixed end of the fulcrum bar. With the fulcrum bar in place, the second
metering cylinder is limited to less stroke than the first metering cylinder. The point at which the second
metering cylinder is located is variable and allows manipulation of the stroke length. This affects the ratio of
displacement of one metering cylinder to the other. Manipulating the selection of metering cylinders, based
upon the displacement of metering cylinders, allows different ratios to be selected.
Bulk process fluids (generally a resin and a catalyst) are delivered to the meter. If the material are low
enough in viscosity, they may be delivered to the dispenser via a gravity feed arrangement, from a bulk
container, or other device. Medium viscosity materials may be delivered to the meter through the use of a
pressure vessel. Still higher viscosity fluids may require the use of a pump to supply the meter. Several
styles of pumps are available including pail, drum, ram type, and diaphragm.
The two metered fluids exit the outlet ports of the metering cylinders as the system reciprocates. These
metered fluids are conveyed through hoses, fittings, piping, and in some instances through power operated
fluid handling valves to other devices integral to the system such as dual dispense valves and disposable
static mixers, dynamic power mixers, mix manifolds, static mixers, single fluid dispense valves, ratio check
assemblies, and shot metering devices to deliver the metered/mixed/dispensed fluids to the point of
application.
Metering Cylinder
The double acting, balanced metering cylinder is a precision pump of the reciprocating type. These metering
cylinders are available in several styles and displacement ranges. The metering cylinder consists of a
cylinder, a piston with an internal check valve which is attached to a metering rod, a check valve (foot valve)
located at the inlet end of the cylinder, piston seal(s), rod seal(s), rod bearing(s), and a packing nut to retain
the rod seals and bearing. Double acting refers to the ability of the metering cylinder to meter fluid in both
directions. Balanced refers to equal amounts of fluid displaced during each direction of stroke.
As the metering rod is retracted from the metering cylinder, the check valve within the piston closes due to
the pressure differential within the metering cylinder. The fluid volume above the metering cylinder is
decreasing, creating a flow of fluid to the discharge port. At the same time a pressure differential across the
foot valve causes it to open. This allows fluid to flow from the supply source to the increased volumetric area
above the foot valve and below the piston.
As the metering rod is extended into the metering cylinder, the foot valve closes and the piston check valve
opens due to the pressure differential within the metering cylinder. The fluid volume below the piston
decreases and material passes through the piston check valve into the cavity of the metering cylinder above
the piston. The volume of fluid displaced from the lower portion of the cylinder during the extension cycle is
twice the volume being created in the upper portion of the metering cylinder. As a result, half of the fluid
refills the upper cavity and the other half exits the discharge port of the metering cylinder.

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Table 1 See−Flo 7 Dispenser Major Components
Description
Adjustable metering cylinder − Meters fluid and receives stroke indirectly via the air cylinder’s movement of
the fulcrum bar.
Air cylinder − Attached to free end of fulcrum bar. Directly strokes fixed metering cylinder via connecting
rod located on fulcrum bar.
Dispense valve − Provides complete cut−off control over the application of metered material.
Fixed metering cylinder − Meters fluid directly in proportion to movement of air cylinder rod via the fulcrum
rod.
Fulcrum bar − Mounted to the dispenser frame, this bar reciprocates as a result of movement of the air
cylinder rod. Movement of the fulcrum bar causes a pumping action to occur within the fixed and ad-
justable metering cylinder.
Air cylinder
Dispense
valve
Fixed metering
cylinder
Adjustable
Metering cylinder
Fulcrum
Bar
Figure 1 See−Flo 7 Major Components

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Consumable Items And Component Cleaning
Consumable Items
Table 2 Consumable Items
Item Part Application
Loctite242 N/A Apply when assembly drawing re-
quires. Used for locking fasteners.
Loctite248 N/A Apply when assembly drawing re-
quires. Used for locking fasteners.
Loctite577 7438517 Used for fluid section thread seal-
ant. Used for all air fittings.
PTFE thread seal tape N/A Pneumatic section thread sealer.
Used for all air fittings.
Seal Sav’r Oil (optional) 7428656 Added to packing nut (wet cup) to
ensure lubrication of metering cyl-
inder wearable components.

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Component Cleaning
The tools shown in Table 3 are utilized to clean and service various system
components.
WARNING:
Allow only qualified personnel to perform the following tasks. Follow the
safety instructions in this document and all other related documentation.
Relieve material pressure prior to servicing system components.
Relieve system air pressure prior to servicing system components.
Disconnect and lock out power to the See−Flo 7 Dispenser prior to
servicing system components.
CAUTION:
Contact your material supplier regarding the selection of flush solvents.
Do not allow any lubricants to enter fluid passageways during repair.
Relieve air and material pressure when equipment is not in use for
prolonged periods of time. Do not allow pressure to remain static when
equipment is idle as this may cause material to pack and harden.
Table 3 Cleaning Tools and Chemicals
Tool Name Type Part Number
Nylon and / or soft plastic bristle brushes Cleaning tools −
Plastic pick Metering cylinder and valve cleaning / re-
build tool 7439868
Maintenance And Cleaning
WARNING:
Allow only qualified personnel to perform the following tasks. Follow the
safety instructions in this document and all other related documentation.
Relieve material pressure prior to servicing system components.
Relieve system air pressure prior to servicing system components.
Disconnect and lock out power to the See−Flo 7 Dispenser prior to
servicing system components.
CAUTION:
Contact your material supplier regarding the selection of flush solvents.
Do not allow any lubricants to enter fluid passageways during repair.
Relieve air and material pressure when equipment is not in use for
prolonged periods of time. Do not allow pressure to remain static when
equipment is idle as this may cause material to pack and harden.

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Part 7446077 2020 Nordson Corporation
NOTE:
The frequencies listed are only guidelines. It’s recommended to inspect
components weekly. It may be necessary to adjust frequencies due to
the facility environment, process parameters, material being applied, or
experience.
Always listen for air leaks, keep your work area clean of material, and
check with the material supplier for specific cleaning procedures for the
material being utilized.

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Table 4 Preventative Maintenance Schedule
Component Task Completion Time Frequency
Weekly Monthly Yearly Cycles
Air cylinder Inspect for loose
connections. In-
spect actuator rod
for damage.
Inspect: 10 Min.
Replace: 30−45 Min. ●
Air fittings and
tubing Inspect for air leaks. 5 Min. ●
Dispense valve Check for leakage.
Use service kit, if
necessary. Inspect 5 Min
Replace: 30 − 60 Min. ●
Material fittings
and hoses Check for material leaks. 5 Min. ●
Mix manifold Check for leakage
and replace if ne-
cessary.
Inspect: 5 Min.
Tighten: 5 Min.
Replace: 30 − 60 Min.
●
Metering cylinder
Inspect for leaks
and to damage re-
garding interior
sealing surfaces.
Replace metering
cylinder, if neces-
sary.
Inspect: 15−30 Min.
Replace: 2 −3 Hrs. ●
Metering rod
Inspect for dam-
age to surface of
rod. Prevent any
bypassed or
leaked material
from leaking onto
the rod.
Inspect: 10 Min.
Replace: 30 Min. ●
Seal cartridge
wet cups Keep wet cups ¾
full with Seal Sav’r
oil.
Tighten packing
nut (1/4) turn
clockwise to com-
pensate for seal
wear if leaks of
material are ob-
served.
Inspect: 5 Min.
Replace: Up to 30 Min. ●

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Part 7446077 2020 Nordson Corporation
Operation
WARNING:
Allow only qualified personnel to perform the following tasks. Follow the
safety instructions in this document and all other related documentation.
Relieve material pressure prior to servicing system components.
Relieve system air pressure prior to servicing system components.
Disconnect and lock out power to the See−Flo 7 Dispenser prior to
servicing system components.
CAUTION:
Contact your material supplier regarding the selection of flush solvents.
Do not allow any lubricants to enter fluid passageways during repair.
Relieve air and material pressure when equipment is not in use for
prolonged periods of time. Do not allow pressure to remain static when
equipment is idle as this may cause material to pack and harden.
NOTE: It is recommended that a sample of mixed materials be allowed to
cure before starting production. Observe the mix quality, ratio, and flow rate.
If these are satisfactory, then start production.
Priming
Dispenser
To assure proper metering and mixing, it is important to bleed entrapped air from the entire metering system.
With supply sources connected to the meter, priming may commence. It may be simpler and quicker to use
supply sources to initially prime the metering system if they are capable of producing sufficient pressure to
force materials through the system. Initial priming will prime the system up to the last point in the fluid circuit.
This is the point where fluids pass through the last component of the system in which they are isolate from
one another (examples: ratio check assembly or dispense valve).

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Ratio Check Assembly
1. Locate the final point in the system that is desired to prime to.
CAUTION: Be sure to place suitable waste containers at the ratio check
assembly outlet.
2. Open the system restrictor valves and ball valves.
3. Open all other closed components in the fluid flow path such as the ball valves at
the metering cylinder inlets.
4. Slowly apply air pressure to the supply source to generate fluid pressure until
material flow is observed exiting the nozzle of the ratio check assembly.
5. Monitor material flow from the nozzles until all traces of air is gone.
6. Remove air pressure from the supply source and relieve fluid pressure.
7. Close the manual ball valves on the ratio check assembly.
To Mixer Manifold
1. Remove the fluid hoses and manual ball valves from the inlets of the mix manifold
assembly.
CAUTION: Be sure to utilize waste containers to collect primed fluid.
2. Open the manual ball valves on the ends of the hoses.
3. Open any other components in the fluid path such as ball valves at the inlets of the
metering cylinders.
4. Slowly apply air pressure to the supply source to generate fluid pressure until
material flow is observed exiting the ball valve of the mix manifold assembly.
5. Monitor material flow from the ball valves until all traces of air is gone.
6. Remove air pressure from the supply source and relieve fluid pressure.
NOTE: The metering system is now primed with material. However, the
material contained with the fluid circuit is not metered or on ratio. The
system must be cycled and the ratio adjusted. Refer to Startup, Operation,
And Shut Down, Ratio Adjustment for additional information regarding ratio
adjustment.

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Part 7446077 2020 Nordson Corporation
Ratio Adjustment
1. Stop the meter so that the fulcrum bar is parallel to the horizontal member of the
frame.
NOTE: This can be accomplished by dispensing or by manipulating the
ratio check assembly.
2. Disconnect electrical power and relieve air/material pressure.
3. Loosen the locking bolts located on the top surface of the slide block.
4. Loosen the wing bolt located on top of the frame, above the moveable metering
cylinder.
5. Slide the metering cylinder and associated linkage toward the pivot end of the
fulcrum bar to increase the ratio or away from the pivot end of the fulcrum bar to
decrease the ratio.
CAUTION: The metering cylinder and associated linkage must be in−line
and perpendicular to the fulcrum bar when adjustment is completed and
before the assembly is locked into position.
6. Tighten the wing bolt and then the locking bolts.
7. Restore electrical power and air/material pressure.
8. Take several ratio samples after fluid pressures have stabilized and verify the
desired ratio has been obtained.

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Dispensing Mixed Materials
CAUTION:
Allow sufficient time for the system to prime the mixing and dispense
components. Be sure to observe fluid pressure gauges to be sure the
system is operating normally. The material pressure gauge readings
should be rising and falling in unison. If the material pressures are not
within normal limits or are acting erratically refer to the Troubleshooting
Section.
When the mix manifold, mixer, whip hose, and dispense valve are not
primed with mixed material, open the dispense valve prior to opening
the mix manifold inlet ball valves to prevent fluid surge. Once these
components are primed, the dispense valve may be opened and closed
without manipulating the mix manifold inlet ball valves.
Do not allow the metering cylinder beneath the air cylinder to run out of
material. If this occurs, rapid pressure increase within the adjustable
metering cylinder may occur and lead to system damage. If this occurs,
maintain the dispense valve in an open position until the main air supply
has been relieved.
1. Apply power to the control panels and select the proper mode of operation.
2. Apply air pressure to the system.
3. Ensure there is sufficient material to satisfy production requirements.
4. Pressurize fluid supply sources.
5. Pre−heat, agitate, or degas supplies as required.
6. If solvent flushing, verify operational status of the solvent flushing system.
7. Verify that prior solvent flushing and air purging was performed fully before
proceeding.
8. Ensure dispense valve outlet orifices are not plugged and install a new mixer and
shroud, if necessary.
NOTE: If utilizing a mix manifold, mixer ,and dispense valve check to be
sure that the nozzle on the dispense valve is not plugged.
CAUTION: Be sure to utilize waste containers to collect dispensed fluid.
9. Start dispensing materials by actuating the dispense actuator, then opening the mix
manifold inlet ball valves.

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Part 7446077 2020 Nordson Corporation
Shutdown 1. Close the main air ball valve and mix manifold ball valves, if equipped.
2. Momentarily open the dispense valve to relieve any static material pressure.
CAUTION: Be sure to utilize waste containers to collect dispensed fluid.
3. Remove the disposable mix tube and shroud from the dispense valve, if equipped.
4. Dispense a small amount of material to purge the outlet ports of the dispense
valve, if equipped.
CAUTION: Clean any materials from the attachment point of the mix tube
and place a cap on the end of the dispense valve to cover the outlet ports.
5. Dispense a small amount of material to purge the outlet ports of the dispense
valve, if equipped.
6. On systems equipped with a mix manifold, mixer, and dispense valve, close the
inlet ball valves on the mix manifold and flush with solvent.
7. Slowly unscrew the bleed screws from the ratio check assembly to bleed entrapped
air from beneath the pressure gauges.
NOTE: If the ratio check assembly is not equipped with bleed screws,
slowly unscrew the pressure gauges from the manifold to release entrapped
air.
8. Replace the bleed screws or pressure gauges.