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Instructions-Parts List
Dynamic Surge Suppressor
For use with double-diaphragm pumps and low-pressure reciprocating pumps.
For professional use only. Not for use in explosive atmospheres.
100 psi (0.7 MPa, 7 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure
Model 224892, Series A
aluminum, with PTFE diaphragm
Model 224893, Series A
aluminum, with buna-N diaphragm
Model 224894, Series B
stainless steel, with PTFE diaphragm
Model 224895, Series B
stainless steel, with buna-N diaphragm
Table of Contents
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WARNING
Hazard of Using Fluids Containing Haloge-
nated Hydrocarbons
Never use 1.1.1-trichloroethane, methylene
chloride, other halogenated hydrocarbon solvents
or fluids containing such solvents in aluminum
models 224892 or 224893. Such use could result
in a chemical reaction, with the possibility of
explosion, which could cause death, serious bodily
injury, and/or substantial property damage.
Consult your fluid suppliers to ensure that the fluids
being used are compatible with aluminum and zinc
parts.
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Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Ä Ä Ä
Ä Ä Ä
308178F
ENG
0903
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Summary of Contents for Graco 224892
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Page 1: Table Of Contents
Never use 1.1.1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in aluminum models 224892 or 224893. Such use could result in a chemical reaction, with the possibility of explosion, which could cause death, serious bodily injury, and/or substantial property damage. -
Page 2: Warnings
Warning Symbol WARNING This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. INSTRUCTIONS D This equipment is for professional use only. - Page 3 TOXIC FLUID HAZARD Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or swallowed. D Know the specific hazards of the fluid you are using. D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national guidelines.
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Page 4: Installation
System Pressure The maximum fluid working pressure of this surge suppressor is 100 psi (0.7 MPa, 7 bar) at 100 psi (0.7 MPa, 7 bar) incoming air pressure. Never exceed 100 psi (0.7 MPa, 7 bar) fluid or air pressure to the surge suppressor. - Page 5 The installation shown below is only a guide for selecting and installing system components; it is not an actual system design. Contact your Graco distributor for assistance in planning a system to suit your needs. G Fluid drain valve DETAIL A: Venting Exhaust Air to a Remote Container Installation Surge suppressor Air pressure gauge...
- Page 6 General Information The surge suppressor uses air pressure and a diaphragm to maintain a consistent fluid outlet pressure from a double diaphragm or low-pressure reciprocating pump. During normal flow, the suppressor air pressure and fluid pressure are in equilibrium. A sharp increase in fluid pressure causes the air inlet port to open, increasing air pressure on the diaphragm and returning the system to equilibrium.
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Page 7: Operation And Maintenance
Operation and Maintenance Operating the Surge Suppressor 1. Be sure the system is properly grounded. Read and follow FIRE AND EXPLOSION HAZARD, on page 3. 2. Check all fittings to be sure they are tight. Be sure to use a compatible liquid thread sealant on all male threads, and do not overtighten the fittings into the pump. -
Page 8: Troubleshooting
Air bubbles in fluid Fluid in exhaust air Pump leaks air or fluid from cover (7) [ Ref. No. 21, the PTFE diaphragm, is used only in Surge Suppressor Models 224892 and 224894. Troubleshooting Relieve the pressure. Check all possible problems and causes before disassembling the pump or surge suppressor. -
Page 9: Service
Remove the nut (31), upper diaphragm plate (32*), diaphragm (13), PTFE diaphragm (Models 224892 and 224894 only), lower diaphragm plate (12), and o-ring (15) from the bolt. Clean and inspect all parts for wear or damage. - Page 10 7. Install the diaphragm (13**), making certain that the side marked AIR SIDE is facing up on the bolt. On Models 224892 and 224894 only, install the PTFE diaphragm (21**) first, then the backup diaphragm (13**). 8. Install the upper diaphragm plate (32*) with the flat side facing up.
- Page 11 Flat end faces inward Fig. 2 Service       Flat side faces down 21** (models 224892 and *15** 224894 only) 16*** Apply sealant to 17*** threads. Beveled side faces inward Lubricate with lithium-based grease Torque to 10 to 15 in-lb (1.1 to 1.7 N-m)
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Page 12: Parts Drawing
Model 224892, Series A, aluminum surge suppressor with PTFE diaphragm Model 224893, Series A, aluminum surge suppressor with buna–N diaphragm Model 224894, Series A, stainless steel surge suppressor with PTFE diaphragm Model 224895, Series A, stainless steel surge suppressor with buna–N diaphragm... -
Page 13: Parts Lists
MUFFLER 187475 SHAFT; acetal 191837* PLATE, diaphragm, fluid side; sst 183542** DIAPHRAGM, backup; polyurethane; used on Model 224892 only 190148** DIAPHRAGM; buna–N; used on Model 224893 only 113901* SCREW, cap, hex hd; 1/4–20 unc–2a x 1.25” long; sst *110004** O-RING; PTFE 110636*** O-RING;... -
Page 14: Repair Kits
BEARING; acetal 113704 PACKING, o-ring; FKM ] These parts are not used with the surge suppressor. PTFE Ball Repair Kit D05210 For Model 224892 only. Includes enough parts to service the surge suppressor twice. Part No. Description 110004 PACKING, o-ring 110636 O-RING;... -
Page 15: Dimensional Drawing
Dimensional Drawing air exhaust muffler: 1/2 npt air inlet: 1/4 npt(f) width across clamp: 7.38 in. (187.5 mm) fluid inlet: 3/4 npt(f) Ä Ä Ä Ä Ä Ä inlet-to-outlet length: 7.74 in. (196.6 mm) total length: 8.40 in. (213.4 mm) height: 8.78 in. -
Page 16: Technical Data
Models 224892 and 224894: acetal, aluminum, buna–N, polyurethane, bronze, plated steel, polyester (labels) Models 224893 and 224895: acetal, aluminum, buna–N, bronze, plated steel, polyester (labels) Models 224892 and 224893: 10 lb (4.6 kg) Models 224894 and 224895: 14 lb (6.4 kg) - Page 17 Notes...
- Page 18 Notes...
- Page 19 Notes...
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Page 20: Warranty
Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor 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.
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