Graco 24W870 Manual

334201D
EN
Kit Instructions
Air Controls for
Therm-O-Flow®
Repair Kit for Integrated Air Controls for Therm-O-Flow®20 and 200 Systems. For
professional use only.
Part No. 24W870
Important Safety Instructions
Read all warnings and instructions in this
manual and in all related manuals. Save all
instructions.
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2334201D
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pressure Relief . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Remove the Air Control . . . . . . . . . . . . . . . . . . . . 4
Replace the Director Valve . . . . . . . . . . . . . . . . . 4
Replace the Air Motor Regulator . . . . . . . . . . . . . 5
Replace the Air Regulators . . . . . . . . . . . . . . . . . 5
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
24W870 Air Control . . . . . . . . . . . . . . . . . . . . . . . 6

Models
334201D 3
Models
Related Manuals
Kit No.
Maximum Working Pressure
psi (MPa, bar) Description Air Inlet Size
24W870 125 psi (0.8 MPa, 8.6 bar) Integrated Air Controls for Therm-O-Flow 20
and Therm-O-Flow 200 3/4 npt (f)
Manual Description
334129 Therm-O-Flow 200, Instructions-Parts
334130 Therm-O-Flow 20, Instructions-Parts

Repair
4334201D
Repair
Pressure Relief
Relieve pressure by following the Pressure Relief Pro-
cedure in the instruction manual for the Therm-O-Flow
system you are using. See Related Manuals on page 3.
Remove the Air Control
1. Relieve pressure to the Therm-O-Flow system.
2. Disconnect all hoses and tubing from the air control.
3. Remove the four screws and washers as shown in
Figure 1.
Replace the Director Valve
1. Relieve pressure to the Therm-O-Flow system.
2. Remove screws (5a) as shown in Figure 2 and take
off the director valve.
3. Remove the spring (5c), valve plate (5d), and o-ring
(5b).
NOTE: Note the orientation of the director valve plate
when you remove it. The opening should be on the
opposite side (left) of the lever.
4. Remove and discard the pin (5g) and the four valve
seats (5e) with the o-rings (5f).
5. Insert new valve seats (5e) with o-rings (5f) and the
new pin (5g).
6. Insert the new director valve plate (5d; see the note
above), spring (5c), and o-ring (5b).
7. Attach the new director valve plate with the screws
(5a). Tighten the screws until snug.
PRESSURIZED FLUID HAZARD
Therm-O-Flow equipment stays pressurized until
pressure is manually relieved. To help prevent seri-
ous injury from pressurized fluid, such as skin injec-
tion, splashing fluid and moving parts, follow the
Pressure Relief Procedure when you stop pumping
and before cleaning, checking or servicing the equip-
ment.
FIG. 1: Air Control Removal
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FIG. 2: Director Valve Replacement
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Repair
334201D 5
Replace the Air Motor Regulator
1. Relieve pressure to the Therm-O-Flow system.
2. Disconnect the air motor housing and fittings.
3. Remove the two screws (9) and take off the shutoff
valve (1) at the top of the module. If your system
has an air solenoid, it can remain attached to the
shutoff valve.
4. Remove the two screws (9) and take off the air
motor regulator (6).
5. Attach the new regulator (6) to the manifold. Orient
it so the gauge lines up with the ram gauges and the
direction of the flow arrow points up. Tighten the
screws until snug. It is recommended that you use
thread locker Loctite 220 or equivalent.
6. Reattach the shutoff valve (1) at the top of the regu-
lator. Make sure that the o-ring (3) is in place on the
valve (1).
Replace the Air Regulators
Identify which knob regulator (8) need to be replaced.
• Ram Down Air Regulator (CB)
• Ram Up Air Regulator (CD)
• Blowoff Air Regulator (CJ)
1. Relieve pressure to the Therm-O-Flow system.
2. Remove the four screws (8a) and take off the air
regulator (8) as shown in Figure 4.
3. Replace the o-rings (8b) on the back side of the reg-
ulator.
4. Attach the new air regulator to the manifold. Use the
index pin for correct orientation. Tighten the screws
until snug.
FIG. 3: Air Motor Regulator Replacement
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FIG. 4: Air Regulators Replacement
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Parts
6334201D
Parts
24W870 Air Control
FIG. 5: 24W870 Parts
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Parts
334201D 7
--- Not available for individual sale.
* Parts are available in kit 255651.
Replacement Warning labels, signs, tags, and cards are available at no cost.
Ref Part Description Quantity
1 121108 VALVE, shutoff, 3/4 npt (includes o-rings and screws) 2
2 101689 GAUGE, pressure, air; 0-200 psi (0-1.4 MPa, 0-14 bar) 3
3 121110* O-RING, buna 3
4 121109 VALVE, blow-off (includes valve and push button) 1
5 121107 VALVE, control 1
6 255651 KIT, regulator, air motor 1
7 108190 GAUGE, pressure, air; 0-100 psi (0-700 kPa, 0-7 bar) 1
8 121106 REGULATOR, manifold mounting (includes 8a and 8b) 3
8a --- SCREWS 4
8b --- O-RING 2
9 121112* SCREW, cap, socket head 6
10 517449 MUFFLER, sintered, 1/4 npt 1
11 113498 VALVE, safety, 110 psi (0.8 MPa, 7.6 bar) 1
13 120602 FITTING, cartridge, 1/4 4
14 --- BLOCK, ram, control, 3 regulator 1
15 --- BALL, sst, 7/32 dia 11
16 120039 FASTENER, shcs, 10-32 x 1/2 4
17 15V954LABEL, valve, shutoff, air control 1

All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 334201
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2016, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revision D, February 2019
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