Graco 311163ZAC Bin Evacuation System Manual De Usuario
Manual Control System
311163ZAC
17
Pressure Relief Procedure
1.
To turn off the pumps move pump switch to OFF.
2.
Shut off the air to the pumps by closing the
bleed-type air shutoff valve on the pumps’ air supply
line, or disconnect the air line.
bleed-type air shutoff valve on the pumps’ air supply
line, or disconnect the air line.
3.
Open all system fluid drain valves that are down-
stream of the pumps.
stream of the pumps.
Initial Startup
This procedure takes you through the settings, adjust-
ments, and other steps that must be completed before
the system is ready for daily operation.
ments, and other steps that must be completed before
the system is ready for daily operation.
1.
Fill all the pumps packing nut/wet cups 1/3 full with a
compatible lubricant if applicable. Refer to your
pump manual for details. Do not use Graco Throat
Seal Lubricant with a sanitary application.
compatible lubricant if applicable. Refer to your
pump manual for details. Do not use Graco Throat
Seal Lubricant with a sanitary application.
2.
Turn on the air to the pneumatic control panel.
3.
Turn SEAL INFLATE to OFF.
4.
Open the air shutoff valves for the pneumatic con-
trols and pumps.
trols and pumps.
5.
Open the pneumatic control panel door. Check for
air leaks.
air leaks.
6.
The equipment was tested with water. Flush the
system before loading material. See page 28.
system before loading material. See page 28.
7.
Follow Loading the Bin procedure, page 18.
8.
Set the ram down air regulator to 30 psi (207 kPa,
2.1 bar). Adjust as needed.
2.1 bar). Adjust as needed.
9.
Adjust the pump regulator as needed.
NOTE: Pump cavitation occurs when the pump cylinder
does not fully load with material on the up stroke and an
air pocket forms in the material after the pump change-
over. If pump cavitation occurs, increase the ram down
air pressure.
does not fully load with material on the up stroke and an
air pocket forms in the material after the pump change-
over. If pump cavitation occurs, increase the ram down
air pressure.
10. Adjust the seal vacuum pump air regulator to 15 psi
(103 kPa, 1.0 bar).
11. Deflate the seal.
12. Press the RAM UP button. If the ram does not raise,
increase the ram up air regulator pressure.
13. Verify the seal is completely deflated after the ram
plate exits the bin. If it is not, deflate the seal.
14. When adjustments are complete, close the pneu-
matic control panel door.
15. Follow Unloading the Bin procedure, page 18.
16. The system is now ready for standard operation.
See page 17.
Setting Air Pressures
Each system function has an associated air pressure.
Air pressure regulators are located on the pneumatic
control panel. Set initial air pressures as shown in the
table below. Make adjustments as needed during opera-
tion. See F
Air pressure regulators are located on the pneumatic
control panel. Set initial air pressures as shown in the
table below. Make adjustments as needed during opera-
tion. See F
*A pressure relief regulator is required when a control
system other than a Graco control panel is used.
system other than a Graco control panel is used.
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious injury
from injection, splashing or moving parts. Relieve
pressure when you stop pumping and before
cleaning, checking, or servicing equipment.
unexpectedly, which could result in serious injury
from injection, splashing or moving parts. Relieve
pressure when you stop pumping and before
cleaning, checking, or servicing equipment.
When raising or lowering the ram plate, keep hands
and body away from ram plate and bin lip.
and body away from ram plate and bin lip.
Ref.
Key
Function
Regulator Setting
psi (kPa, bar)
B*
SEAL INFLATE
7 (48, 0.5)
Max: 15 (103, 1.0)
Max: 15 (103, 1.0)
H
RAM UP
30 (207, 2.1)
K
RAM DOWN
30 (207, 2.1)
E
PUMP
50 (345, 3.4)