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
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Original instructions. This manual contains English. MM 3A0421
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