background image

Static electricity is created by 

the 

high velocity flow of fluid 

system is not properly grounded,  sparking 

through  the  pump  and  hose.  If  every  part  of  the 
may occur, and the system may become hazardous. Sparking 

may also occur when plugging in or unplugging 

power sup- 

ply cord.  Sparks can ignite fumes from solvents and the fluid 

being sprayed, dust particles and other fiammablesubstances, 

whether you are spraying indoors or outdoors, and can cause 

fire  or  expiosion  and  serious  bodily  injury  and  property 

the sprayldispensing area when there is any chance of igniting 

damage.  Do not plug in or unplug any power supply cords in 

fumes still in the air. 

If you  experience any static  sparking or even a slight shock 

while using this equipment, STOP 

ing. Do not use the system again until the problem has been 

IMMEDIATELY. Check the entire system for positive 

identified 

and corrected. 

Grounding 

To reduce the risk of static sparking, ground the pump and ail 

other  components  used  or  located  in the  sprayldispensing 

area. CHECK your 

electrical code foi detailed grounding 

instructions for your area and type of equipmenrand be sure 

to ground all 

of 

these components: 

1.  Pump:  Ground the complete pump as  indicated in your 

separate instruction manual. 

2. 

Air and fluid hoses:  use only grounded hoses with a max- 

imum of 500 feet 

combined hose length to en- 

sure  grounding  continuity.  Refer  to  Hose  Grounding 

Continuity. 

3. 

Air compressor: follow the air compressor manufacturer's 

recommendations. 
Spray 

valve:  obtain  grounding  through 

connection to 

properly grounded fluid hose and pump. 

5. 

Fluid 

Supply Container:  according to local code, 

6. 

Object being sprayed:  according to local code. 

7. 

A

l

l

 

solvent 

pails 

used when flushing,  according to local 

code. Use 

which are conductive. Do not 

place the pail on a non-conductive surface, such as paper 

or cardboard, which interrupts the grounding continuity. 

8. 

To 

maintain grounding 

when flushing 

always hold a metal part of the gun firmly to 

the side of a grounded metal pail,  then trigger the gun. 

Flushing 

Safety 

Before flushing,  be sure the entire system and flushing 

are  properly grounded.  Refer to Groundlng,  above.  Follow 

the Pressure 

Procedure on page 

2, 

and remove the 

the lowest possible fluid pressure, and maintain firm 

spray 

from the 

valve.  Always use 

metal contact between the gunldispensing valve and the pail 

during flushing to reduce the risk of fluid injection injury, static 

sparking and splashing. 

HOSE 

SAFETY 

High pressure fluid in the hoses can be very dangerous. If the 

hose develops 

leak,  split or rupture due to any kind of wear, 

damage 

or 

misuse, the high pressure spray emitted from 

it 

can 

cause a fluid  injection injury or other serious bodily injury or 

damage. 

ALL FLUID HOSES MUST HAVE 

SPRING 

GUARDS 

ON 

BOTH 

The spring guards 

protect the hose from 

kinks or bends at or close to the coupling which can result in 

hose rupture. 

TIGHTEN all fluid connections securely before each use.  High 

pressure fluid  can  dislodge a  loose coupling  or  allow  high 

pressure spray to 

from the 

NEVER use a damaged hose. Before each use, check the en- 

tire hose for cuts, leaks, abrasion, bulging cover, or damage or 

movement of the hose couplings.  If any of  these conditions 

exist.  replace the hose immediately. DO NOT try to recouple 

high pressure hose or mend 

it 

with tape 

or 

any other device. A 

repaired hose cannot contain the high pressure fluid. 

HANDLE AND 

ROUTE 

HOSES 

CAREFULLY. 

not 

on 

hoses to move 

Do not use fluids or solvents which 

Hose 

Grounding 

Continuity 

grounded spray system. Check the electrical resistance of your 

Proper hose grounding continuity is essential to maintaining 

air and fluid hoses at least once a week. 

If 

your hose does not 

have 

tag  on 

it 

which  specifies  the  maximum  electrical 

maximum resistance limits.  Use 

resistance meter in the 

resistance,  contact the hose supplier or manufacturer for the 

propriate range for your  hose to check the resistance. If the 

resistance  exceeds  the  recommended  limits,  replace 

it 

your  system  hazardous.  Also  read 

FIRE 

OR 

EXPLOSION 

mediately. An ungrounded or poorly grounded hose can make 

HAZARD, 

above. 

MOVING PARTS HAZARD 

The  piston  in the  air  motor,  located  behind the  air  motor 

shieid,  moves when air is supplied to the motor. Moving parts 

can  pinch  or  amputate  your  fingers  or  other  body  parts. 

Therefore, NEVER operate the pump with the air motor shield 

removed.  KEEP  CLEAR  of  moving  parts when  starting  or 

follow the Pressure Relief Procedure on page 

to prevent 

operating the pump.  Before checking or servicing the pump, 

the pump from starting accidentally. 

are not compatibie with the inner tube and cover of the hose. 

DO 

NOT expose  Graco hoses to temperatures above 

or below 

IMPORTANT 

the General Standards,  Part 1910,  and the Construction Standards,  Part 

be consulted. 

United 

Government safety standards have been adopted under the Occupational Safety and Health Act. These standards-par- 

Summary of Contents for C Series

Page 1: ...07 474 Series C Standard Severe Duty Displacement Pumps have an abrasion and corrosion resistant displacement rod and sleeva Refer to Technical Date for wetted parts information INDEX Warnings 2 Service 4 Parts Drawing and List 6 How To Order Replacement Pert5 6 Technical Data Back Page Warranty Back Page 307 728 SUPERSEDES B Rev C GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1444 COPYRIGHT 1985 GR...

Page 2: ...up spray and reduces the risk of fluid injeciionwhen the tip is not installed Check diffuser operation regularly Follow the Pressure Relief Procedure at the right and then remove the spray tip Aim the gun into a grounded metal pail holding the gun firmly to the pail Using the lowest possiblepressure trigger the gun If the fluid emit ted is not diffused into an irregularstream replacethe diffuser i...

Page 3: ...spensing valve and the pail during flushing to reducethe risk of fluid injection injury static sparking and splashing HOSE SAFETY High pressure fluid in the hoses can be very dangerous If the hose develops a leak split or rupturedue to any kind of wear damage or misuse the high pressurespray emitted from it can cause a fluid injection injury or other serious bodily injury or properly damage ALL FL...

Page 4: ...nting and clamp it in a vise before removing the displacement pump 3 Loosen the packing nut 2 Pull up on the displace pin F and remove it Remove the three tie rod ment rod 221 far enough to grasp the lower cotter locknuts IG Pull the displacement pump down 4 Push down on the displacement rod 22 until the piston 3 flats clear the pump housing 11 Pullthe pump housing piston and displacement rod asse...

Page 5: ...placement rod 22 onto the connect jam nut K Align the tie rods with the pump hous ing rod J Install the cotter pin F Tighten the ing 1 and install the tie rod locknuts loosely 16 St8 t the pump and run it at its lowestspeed possi ble about 4 0 psi 2 8 bar while you tighten the tie Adjust the tie rod locknuts if necessary to rod locknuts GIevenly to 35 50 ft lb 47 68 Nml eliminate binding 17 Tighte...

Page 6: ...SKET 1 WASHER steel 1 1 GLAND mala V PACKING leather 2 4 V PACKING UHMW polyethylene GLAND female 6 PIN straight 2 ROD displacement 1 TAG warning not shown 1 1 Suppliedin repair kit 2 20 395 Recommended tool box spare parts Keep on hand to reduce down time Extra warnings and tags ere supplied et no charge 220 395Pecking Repair Kit Must be purchased separately Ref No Qty 8 2 9 1 1 5 1 7 1 1 8 2 8 1...

Page 7: ... 1 Supplied in repair kit 207 W Wecommended tool box spare parts Keep on hand to reduce down time Extra warningsand tags are supplied at no charge 207 968 Pecking Repair Kit Must be purchased separately Ref NO ow 15 9 1 17 1 2 18 8 20 19 2 2 HOW TO ORDER REPLACEMENT PARTS 1 To be sure you recaivethe correct replacement parts kit or accessories always give all of the information requested in the ch...

Page 8: ...ies equip ment or materials not supplied by Graco or the improper design manufacture installation operation or maintenance of structures ac cessories equipment or materials not supplied by Graco This warranty is conditionedupon the prepaid returnof the equipment claimed to be defective for examination by Graco to verify the claimed defect If the claimed defect is verified Gram will repair or repla...

Reviews: