Graco 1590 SA, Instructions-Parts List Manual

Page: 11 / 40

Maintenance
310622L 11
Maintenance
Lubrication
The air valve is designed to operate unlubricated, how-
ever if lubrication is desired, every 500 hours of opera-
tion (or monthly) remove the hose from the pump air
inlet and add two drops of machine oil to the air inlet.
Flushing
Insert suction tube into cleaning solution. Open air regu-
lator to supply low pressure air to the pump. Run the
pump long enough to thoroughly clean the pump and
hoses. Close the air regulator. Remove the suction tube
from the cleaning solution and drain pump. Place suc-
tion tube in the fluid to be pumped.
Flush the pump often enough to prevent the fluid you
are pumping from drying or freezing in the pump and
damaging it. Flushing schedule will be based on what
the pump is being used for. Use a compatible cleaning
solution and always cycle the pump during the entire
flushing process.
Always flush the pump and relieve the pressure before
storing it for any length of time.
Routine Cleaning of Product Contact
Section of Pump
1. Flush the system. See Flushing above.
2. Relieve pressure in the system. See Pressure
Relief Procedure on page 10.
3. Disassemble the fluid section of the pump and
accessories. See Check Valve Repair on page 19
and Diaphragm Repair on page 21.
4. Using a brush or other C.I.P. methods, wash all
product contact pump parts with an alkaline deter-
gent at the manufacturer’s recommended tempera-
ture and concentration.
5. Rinse these parts again with water and allow parts
to completely dry.
6. Inspect the parts and reclean any soiled parts.
7. Immerse all product contact parts in an approved
sanitizer before assembly. Leave the parts in the
sanitizer, taking them out only one by one as
needed for assembly. See Check Valve Repair on
page 19 and Diaphragm Repair on page 21.
8. Lubricate the clamps, clamping surfaces, and gas-
kets with waterproof sanitary lubricant.
9. Circulate the sanitizing solution through the pump
and the system prior to use. Cycle the pump as the
sanitizing solution is circulated.
Tightening Connections
Before each use, check all hoses for wear or damage,
and replace as necessary. Check to be sure all connec-
tions are tight and leak-free.
CAUTION
Do not over-lubricate the pump. Oil is exhausted
through the muffler and could contaminate your fluid
supply or other equipment. Excessive lubrication can
also cause the pump to malfunction.
The pump and the system should be cleaned in
accordance with your state sanitary standard
codes and local regulations.