Taylor-Wharton EF-1000 - Manual (Page 17)

BT-472 Rev. B
17
OPERATION
These instructions are for operators experienced with cryogenic equipment. Before operating this product, become
familiar with the safety precautions in this manual and in reference publications. Study this manual and the general
arrangement drawing located in the back of this manual thoroughly. Know the location and function of all components.
Filling by Pressure Transfer
Filling by pressure transfer is accomplished by lowering the pressure in the Express Fill system below that of the source
vessel. Typically the source vessel is a truck-mounted vessel. The pressure is reduced in the Express Fill system by
venting gas through the vent valve (V-2). Liquid is pushed by pressure from the truck-mounted vessel and into the
Express Fill system.
CAUTION: Follow the safety precautions at the beginning of this manual. Accidental contact with liquid or cold gas
can occur during filling.
A cryogenic transfer hose equipped with a relief valve and dump valve should be used to connect the Express Fill
system to the liquid source. Follow the instructions below to fill by pressure transfer:
1.
Visually inspect the Express Fill system, transfer hose, and bulk tank piping. Do not attempt to fill the unit
if any components are broken or missing.
2.
Connect a transfer hose from the bulk tank to the liquid connection (CN-1).
3.
Open the liquid valve (V-1) and vent valve (V-2) to begin the fill.
4.
When liquid issues from the vent valve, the vessel is full. A 10% gas head space will remain above the
liquid. Close the liquid valve (V-1).
5.
Once liquid stops issuing from the vent valve (V-2), close the vent valve.
6. Close the liquid source supply valve and open the transfer hose dump valve.
7.
Disconnect the transfer hose from the liquid connection (CN-1).
Filling by Pump Transfer
When a pump is used to fill the container, the pump / top fill connection (CN-3) should be used. Open the manual ball
valve (V-10) if equipped. Closely monitor the vessel pressure during the fill. If the vessel pressure approaches the relief
valve setting or the pump pressure rating, shut down the pump. Open the vent valve (V-2) to reduce pressure as needed.
When filling using the Taylor-Wharton Express Cryogenic Delivery Vehicle in automatic mode, the fill is stopped at a
level providing an adequate gas head space. Refer to the Express Vehicle instruction manual for details.
When using a traditional pumping system, the vent valve (V-2) should remain open during the fill. Monitor the product
exiting the vent valve closely. When liquid issues from the vent valve(V-2), immediately stop the pump and close the
manual ball valve (V-10) if equiped. Once liquid stops issuing from the vent valve, close the vent valve.