Graco 3A0421A User Manual

Instructions-Parts

3A0421A

Ratio Check Kit

Use with mix manifold 258989 to check the ratio at the mix manifold on XP70
plural-component sprayers.

Important Safety Instructions

Read all warnings and instructions in the mix man­ifold manual 3A0590. Save all instructions.

Part No. 24F375

Ref. Part No. Description Qty.

ENG

1 150287 COUPLING 1
2 245143 VALVE, pressure, bleed 1
3 116746 FITTING, barbed, plated 1
4 16E987 PLUG, ratio check 1
5 114315 O-RING 1

Resin
Outlet

E

(Closed)

Hardener
Restrictor
Adjustment

2

3

1

C (Closed)

Hardener
Outlet Tube

5

4
Resin plug fits
over the hardener
tube.

r_24F375_3A0421_1a-1

Overview

Overview

The ratio check kit is used in place of the static mixer or
hose that would normally be attached to the outlet of mix
manifold 258989.

The kit allows only the hardener to dispense out of the
normal outlet. The resin is diverted to dispense out of
the sample valve (2). The outlet plug (4) must be
removed before returning to “mix” mode.

Installation

NOTICE

To prevent an inaccurate ratio check when feed
pumps are used in your system, the feed pressure
cannot be more than a maximum of 25% of the pro­portioner outlet pressure. High feed pressure can
float the proportioner pump check balls, resulting in
an inaccurate ratio check.

1. Relieve pressure. See mix manifold manual for

instructions.

2. Flush mixed material, if necessary. See mix man-

ifold manual for instructions.

3. Remove plug (P3) from the mix manifold.

inlet

fittings

wrench here

P3

outlet

nipple

r_24F375_3A0421

FIG. 1:

4. Place one wrench on the front of the manifold and
use another wrench to remove the outlet fitting, nip­ple fitting, static mixer, and whip hose from the mix
manifold outlet.

NOTICE

To prevent damage to the inlet swivel fittings, use a
wrench on the front of the mix manifold.

5. Install coupling (1), sample valve (2), resin outlet fit­ting (3), o-ring (5), and resin plug (4) as shown on
page 1.

NOTE: The resin plug (4) fits over the hardener out­let tube.

2 3A0421A

Procedure

Procedure

1. Close the dual shutoff handle (E), sample valve (2),
and solvent valve (C).

2. Set proportioner to 50% of spray pressure.

3. Place waster containers under the hardener and
resin outlets. Open the dual shutoff handle (E). The
hardener pressure will drop.

4. First time use:

a. Open the resin sample valve (2) until you have a

typical flow or cycle rate.

b. Adjust the hardener restrictor stem in clockwise

until the fluid pressure gauges are balanced.

c. Close the dual shutoff handle (E).

5. Use after the hardener restrictor stem is pre-set:

a. Open the resin sample valve (2) until the fluid

pressure gauges are balanced.

Open ratio check valve (2) and shut off handle (E)
and take ratio samples.

7. Close the dual shutoff handle (E) when you have
enough material. Compare amounts in each con­tainer; amounts should correspond to desired ratio.

NOTE: If you know the mix ratio is by weight, weigh
tared containers for a more accurate measure. The
weight ratio will be different than the volume ratio
unless both fluids have the same specific gravity.

8. Close the resin valve (2). This valve can be left in
place for future ratio checks.

9. Flush the hardener outlet tube with solvent. See mix
manifold manual for instructions.

10. Remove the ratio check plug (4) and o-ring (5) and
save for future ratio checks.

NOTICE

To prevent damage to the inlet swivel fittings, use a
wrench on the front of the mix manifold.

11. Reinstall fitting, static mixer, and hose.

b. Close the dual shutoff handle (E).

6. Hold graduated or tared containers under the resin
outlet fitting (3) and under the hardener outlet tube.

NOTE: The hardener restrictor adjustment should
now be set correctly for spraying mixed material and
taking ratio checks. No further adjustments are
required.

3A0421A 3

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

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(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

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PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.

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The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.

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Phone: [phone] or Toll Free: 1-800-328-0211 Fax: [phone]

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Original instructions. This manual contains English. MM 3A0421

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