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Pressure Relief Procedures
309028ZAT
35
Pneumatic Pressure Relief
Procedure
This procedure describes how to relieve pressure on the
Pneumatic Logic Panel (G) and cylinders. Use this
procedure whenever you perform ram assembly service
on the piston rod seal or the ram piston.
1. Follow
Fluid Pressure Relief Procedure
on page
34.
2. Fully lower the ram by setting the RAM POSITION
Switch (AG) to LOWER. Leave the switch in the
LOWER position.
3. Open the door on the Pneumatic Logic Panel (G).
4. Adjust the air pressure to 0 PSI for the RAM DOWN
Air Regulator (AK). Refer to the gauge on the RAM
DOWN Air Regulator (AK) and R3 Regulator (AL) to
verify the ram has been depressurized. See F
5. Slowly open the drain cock located on the bottom of
the air cylinders (CL).
6. After the air pressure has been relieved, remove the
Ram Down air line running from the top of the
Pneumatic Logic Panel (G) to the ram cross bar
(CB).
7. Close the Main Air Shutoff Valve (P) on header.
8. Leave the drain cock open and the Ram Down
airline removed until service is complete.
9. After service is complete, close drain cocks and
make all pneumatic connections and open the Main
Air Shutoff Valve (P) to header. Perform the
Adjusting the RAM UP and RAM DOWN Air
Regulators
F
IG
. 16
F
IG
. 17
G
CB
AG
CL
P
AK
AL
Summary of Contents for 309028ZAT
Page 14: ...Component Identification 14 309028ZAT FIG 5 Pneumatic Logic Panel Interior AJ AK AL ...
Page 41: ...Junction Box Panel Service 309028ZAT 41 FIG 20 T10196 Pressure Switch Solenoid Valve ...
Page 75: ...Parts 309028ZAT 75 Follower Plate Assembly 241891 and 243510 FIG 32 ...
Page 77: ...Parts 309028ZAT 77 PLC Pneumatic Logic Panel FIG 33 915 909 905 915 910 917 906 ...
Page 78: ...Parts 78 309028ZAT FIG 34 945a 955 939a 912b 912a 914a 954a 909a 953a 901b 902b ...
Page 80: ...Parts 80 309028ZAT PLC Interface Accessory Kit 241838 and 24V775 FIG 35 ...
Page 82: ...Parts 82 309028ZAT Junction Box Panel 195320 and 119773 FIG 36 ...
Page 88: ...Parts 88 309028ZAT Elevator Assembly 241902 FIG 39 Ref Ref Ref ...