Instruction/ maintenance manual of the product A-25 Graco
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Operation PLURAL COMPONENT PROPORTIONER ® A-2 5 Air operated, electrically heated , plural component pr opor tioner For spraying or disp ensing 1:1 ratio pol yurethane foam form ulations and other 1:1 fast setting materials. Not for use in e xplosive at mospheres or hazardous locations.
2 3A1569B Contents Proportioner Models . . . . . . . . . . . . . . . . . . . . . . . . 3 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Related M anuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 W arnings .
Proportioner Models 3A1569B 3 Pr opor tioner Models All propor tioners can be configured t o operate on 380V (4 wire), 230V (3 wire), or 23 0V 1Ø. Systems All systems include a proportioner , spra y gun, and 60 ft (18.3 m) of heat ed hose. Related Manuals Manuals ar e av ailable at www .
Warnings 4 3A1569B Wa r n i n g s The f ollowing warnings are f or the setup , use, grounding, maintenance, and repair of this equipment . The e xclama- tion point symbol ale r ts you to a gener al warn ing and the hazard symbo ls refer to proced ure-specific risks.
Warnings 3A1569B 5 FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in wo rk a r e a can ignite or e xplode. T o help pre v ent fire and explosion: • Use equipment only in we ll vent ilated area.
Warnings 6 3A1569B EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury . • Do not oper ate the unit when f atigued or under the influence of dr ugs or alcohol. • Do not e xceed the maximum w or king pressure or temper ature rating of the lo west rated system component.
Important Two-Component Materi al Information 3A1569B 7 Impor tant T w o-Component Material Inf o rmation Isocy anate Conditions Material Self-ignition K eep Components A and B Separate Moisture Sensitivity of Isocy anates Isocy anates (ISO) are catalysts used in tw o component f oam and polyurea coatings.
Important Two-Component Material Information 8 3A1569B Changing Materials Changing the material types used in y our equipment requires special atte ntion to av oid equipment damage and downt ime. • When changing m ater ials, f lush the equipment m ul- tiple times to ensure it is thoroughly cle an.
Typical Installation, without Circulation 3A1569B 9 T ypical Installation, without Circulation Key for F IG . 1 A Reactor Propor tio ner BH e a t e d H o s e C Fluid T emperature Sensor (FTS) D Heated.
Typical Installation, wi th Circulation 10 3A1569B T ypical Installation, with Circulation Key for F IG . 2 A Reactor Propor tio ner B Heated Hose C Fluid T emperature Sensor (FTS) D Heated Whip Hose .
Component Identi fication 3A1569B 11 Component Identification F IG . 3: T ypical Instal lation AG T W Z AF R AA S U V AE AC Y X ti16814a AI DD GG FF AD AB AH.
Component Identification 12 3A1569B Key: R Main Disconnect Swit ch - Contro ls power to heating circ uits. I S Main Air Filter - Filters system air supply .
Component Identi fication 3A1569B 13 Contr ol P anel T emperature Controls and Indicator s ELECTRONIC MONITORING SYSTEM ° F ° C A B Air Motor Pressure Gauge Air Pressure Regulator Air Motor Shutoff V alve DataT rak (optional) See page 32.
Component Identification 14 3A1569B Main P ower Switc h Located on right side of unit, pag e 11. T ur ns heater pow er ON and OFF . Does not tur n heater z ones or pumps on. Actual T emperature Key/LED Press to displa y actual temperature . Press and hold to displa y electrical current.
Setup 3A1569B 15 Setup Locate Reactor A-25 1. Locate Reac tor A-25 on a lev el surface and bolt in place to the floor with 3/8 in. (10 mm) bolts , unless the Reactor needs to re main por table. • T wo bolts through the 2 in. (50 mm) deep caster bushin gs in the rear .
Setup 16 3A1569B Configure to Supply P ower NO TE: Both cord connection AND jumper positioning steps on page 17 must b e completed. Step One - Connect Electrical Cord NO TE: Disregard ter minal numbers on disconnect s witch blocks . Wire to pos itions shown.
Setup 3A1569B 17 Step T wo - Install P ower Jumper s Find location for power jumpers which are in a plastic bag tie wrap ped to the ground lug. 1. T ur n scre ws counter-clockwise on the up per par t of the shroud until the y stop . Pull door up and out.
Setup 18 3A1569B Gr ound System • Reactor : is grounded t hrough power cord; see page 16. • Spra y gun : connect whip hose ground wire to FTS; see page 1 9. Do not d isconnect wire or spray with- out whip hose. • Fluid supply containe rs : follo w your local code.
Setup 3A1569B 19 Recir culation / Pressure Relief Lines If Recirculating to Supply Drum: Conne ct high pressure hos e (R) to relie f fittings (BA, BB) of both PRESSURE RELIEF/SPRAY valves. Route hose back to component A a nd B drums. Refer to manual 309852.
Setup 20 3A1569B 5. Connect cab les (SS). Con nect electrical connectors (NN). Be sure cab les hav e slack when hose bend s. Wrap cab le and electrical connections with electrical tape. Close Gun Fluid Inlet V alves A and B Connect Whip Hose to Gun or Gun Fluid Manif old For Prob ler P2 guns: Connect hoses to inlet valves .
Initial Startup 3A1569B 21 Initial Star tup Load Fluid w ith Feed Pumps NO TE: The Reactor is tested wit h oil at the factor y . Flush out the oil with a co mpat ible solv ent bef ore s pra y- ing; see page 27. 1. Check that Setup pro cess is com plete; see page 15.
Initial Startup 22 3A1569B Set T emperatures See Setup , page 15. 1. T ur n main power ON . 2. Press or to change temper ature scale. 3. Press to displa y target temper atures. 4. T o set he at zone target te mperature, pres s or until display sho ws desired temper- ature .
Initial Startup 3A1569B 23 Suppl y W et-Cups with Thr oat Seal Liquid 1. Component A (ISO) Pu mp: K eep reser voir (Z) 3/4 filled with TSL. Wet-cup piston circulates TSL through wet -cup to carr y awa y isocyanate film on displacement rod . Change the fluid in the reservoir when it become s milky-looking.
Spraying 24 3A1569B Spra ying The Fusion AP gun is show n. 1. After r eaching spra y tempera tures, engage gun piston s af ety lock . 2. Close gun fluid inlet va lves A and B. 3. Attach gun fluid manif old. Connect gu n air line. Open air line valv e.
Spraying 3A1569B 25 9. Slowly increase the air regulator setting until the appro ximate stall (static) pressure is achie ved on fluid gauges (GA) and (GB).
Park 26 3A1569B Pa r k P ar k the p umps at th e end of the day to cycle propo r- tioner pumps t o home position, submerging displace - ment rod. 1. Open the park v alve . 2. T r igger the gun until pum ps stops at the bott om and relie ves pressure. 3.
Flushing 3A1569B 27 Flushing • Flush out old fluid with ne w fluid, or flush out old fluid with a compatib le moisture-free solv ent. • Use lowest possible pressur e when fl ushing. • T o flush feed hoses, pumps, and the heater sepa- rately fro m the heated hoses , set PRESSURE RELIEF/SPRA Y valv es (SA, SB) to PRESSURE RELIEF/CIRCULA TION.
Operation 28 3A1569B Operation Daily Start-up Procedure NO TE: The daily star t-up procedures describe normal operat ion. Assume that all temperatur e and pressure settings ha ve been pre viously set, b ut that the heating system is not up to oper ating temperature .
Operation 3A1569B 29 15. Chec k A and B fluid pressure gauges (GA, GB) to ensure proper pr essure balance between A and B. If imbalanced, b leed off the high side with va lves SA and SB until ba lanced. 16. Open gun fluid manif old v alves A and B . 17.
Fluid Circulation 30 3A1569B Fluid Cir culation Cir culation Through Reactor T o circulate through gun manif old and preheat hose , see page 31. 1. F ollow Initial St ar tup , page 21. 2. See T ypical Installation, wi th Circulation , page 10. Route circulat ion lines bac k to respective com- ponent A or B supply dr um.
Fluid Circulation 3A1569B 31 Cir culation Through Gun Manif old Circulating fluid throu gh the gun manif old allows rap id preheating of hose . 1. Install gun fluid man ifold (P) on accessory circula- tion kit (CK). Connect high pressure circulation lines (R) to circulation ma nifold.
DataTrak Controls and Indicators 32 3A1569B DataT rak Contro ls and Indicator s The DataT rak on the Reactor A-25 spra yers do not ha ve runa wa y protection.
DataTrak Operation 3A1569B 33 DataT rak Operation NO TE: The display (AE) will turn off after 1 minute to sav e battery lif e. Press any k ey to w ake up the displa y . Setup Mode 1. See F IG . 4, pag e 32. Pre ss and hold for 5 sec- onds until Setup men u appears .
Maintenance 34 3A1569B Maintenance • Chec k and add TSL to B side pump wet-cup dai ly . • Chec k ISO lube bottle f or significant discolor ation or cr ystallization daily . Replace with fresh TS L when needed. • Ensure ISO (A) pump is down an d in P ARK posit ion durin g e very shutdown.
Diagnostic Codes 3A1569B 35 Diagnostic Codes T emperature Control Dia gnostic Codes T emperature control dia gnostic codes appear on tem- perature display . These alarms tur n off heat. E99 clears automatically when commun ication is regained. Codes E03 throu gh E06 can be cleare d by pressing .
Dimensions 36 3A1569B Dimensions A B C With Wheels Without Wheels Dimension in. (mm) in. (mm) A 43.5 (1105 ) 43.5 (1105) B 29 (736.6) 21.5 (546) C 30 (762) 24.
Technical Data 3A1569B 37 Te c h n i c a l D a t a *Full load amps with all de vices operating at maximum capabilities with 210 ft (64.1 m) of hose. ***210 ft (64 m) of hea ted hose will produce the ma ximum allo wable heat capacity . 3 10 ft (94 m) of heated hose ma y be used, but will ha ve 25% less heat capacity .
All written and visual data con tained in th is document reflects the late st product information availabl e at the time of publica tion. Graco reserves the right to make changes at any time without notice. For patent information, see www.graco.com/pate nts.
An important point after buying a device Graco A-25 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco A-25 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco A-25 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco A-25 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco A-25 will certainly help you make a decision on the purchase.
If you already are a holder of Graco A-25, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco A-25.
However, one of the most important roles played by the user manual is to help in solving problems with Graco A-25. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco A-25 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
