Graco 24W870 Manual

334201D

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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D

F

G

E

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J

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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D

E 

Parts

6334201D

Parts

24W870 Air Control

FIG. 5: 24W870 Parts

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











































D

E

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

www.graco.com

Revision D, February 2019

Graco Information

For the latest information about Graco products, visit www.graco.com.

For patent information, see www.graco.com/patents.

TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest dis-

tributor.

Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505

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