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Operation
Your new sanitary ram plate offers greater versatility and
value-added features over conventional versions:
•
When deflated, the seal retracts inside the outer
diameter of the plate weldment.
•
The plate has no loose parts to be misplaced during
cleaning.
•
The seal can be removed with little effort.
•
The weldment is constructed of 316 SST and con-
tains a universal mount for pumps.
The seal pressure must be adjusted to meet your pro-
cess requirements. Process material viscosity, ram
pressure, drum diameter, and pumping rate are key fac-
tors in determining the proper seal pressure. Typically,
for standard 55-gallon drum applications, set the
pressure regulator between 10 and 14 psi. The max-
imum pressure rating for the seal is 25 psi. The safety
relief valve is set to 20 psi to prevent over-pressuriza-
tion.
Use trial and error to find the right combination of ram
pressure and seal pressure. To minimize seal wear, use
the lowest possible air pressure while still preventing
material blow-by.
•
If both ram and seal pressure are too high, the seal
will fail prematurely.
•
If ram and/or seal pressure is too low, the pump may
not prime or the drum will not be sealed properly.
Pressure Relief Procedure
WARNING
Read the warnings on page 3.
1. Relieve the pressure as explained in your separate
pump or system manual.
2. Turn off the air to the ram.
309549B
Sequence of Operation
Initial Conditions:
1. The ram is fully raised.
2. The seal is deflated.
3. The seal is lubricated with appropriate sanitary
grease.
4. The pump is off.
At the Operator Control Station:
1. Position a new process drum under the ram. If bag
liner is present, secure top of bag to outside of
drum.
2. Slowly lower the ram plate into the drum.
3. When plate to material contact is made, inflate the
ram seal.
4. Turn the pump on.
5. When drum is empty, turn pump off.
6. Deflate ram seal.
7. If a vacuum has formed between the ram plate and
the drum, push the button on the blow off valve to
activate blow off.
The blow off valve is typically used with highly vis-
cous materials.
8. Raise plate out of drum.
Operation
9
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