Chart Industries Liquid Discharge Device Installation and Operating Instructions

GENERAL:

INSTALLATION:

The MVE liquid discharge device provides liquid nitrogen for filling cold traps and smaller dewars without having to scoop out or pour liquid nitrogen from the vessel. The liquid discharge device utilizes the normal evaporation of the cryogenic liquid to pressurize a container by plugging the neck of the vessel and forming a hermetic seal. The pressurized vessel can then decant product through the liquid discharge device. Figure 1 shows a drawing of the liquid discharge device. The primary components of the liquid discharge device are listed below:

Perform the following steps to install the liquid discharge device on a vessel:

• Rubber Stopper: Provides a seal against the walls of the neck tube. Tightening the wing nut expands the rubber stopper.

1) Attach the discharge device spout to the liquid discharge device (refer to Figure 1 for location). A transfer line can be used in place of the discharge device spout. The transfer line can be ordered from MVE (P/N 9713159) along with the required adapter fitting (P/N 1110052). 2) Verify that the rubber stopper is dry and free from grease and other contaminants. Check for nicks and gouges that may impair normal operation. 3) Verify that the cable is in good working condition.

• Pressure Gauge: Indicates the pressure inside the container.

4) Verify that the vent and discharge valves turn freely.

• Relief Valves: Relieves pressure inside the container automatically when excessive pressure is reached. The relief valves are safety devices and cannot be adjusted.

5) Loosen wing nut.

• Vent Valve: Provides means to vent product. The vent valve can be closed to pressurize the vessel or opened to depressurize the vessel.

6) Lower discharge device into vessel. As the discharge device is lowered, the nitrogen in the vessel will boil until the dip tube has cooled down. The boiling action is normal. Continue lowering until the rubber stopper fits snugly. 7) Clip the safety cable to the vessel handle.

• Discharge Valve: Allows product to flow out of the vessel through the discharge device spout. • Safety Cable: Prevents discharge device from accidently exiting completely from vessel.

8) Tighten the wing nut until it contacts the washer. Tighten wing nut another 1-1/2 to 2 turns (EXT RBR versions 4-5 turns). CAUTION: Tighten the wing nut with hands only, do not use any tools. Tightening the wing nut expands the rubber stopper against the neck tube of the vessel. Excessive tightening may damage the neck tube. 9) Close the vent valve and the discharge valve. Pressure will slowly begin to build. Several hours will be required to achieve sufficient pressure to operate the liquid discharge device. Pressure buildup can be accelerated by gently tipping the vessel at 45˚ angle. CAUTION: Excessive pressure can rupture the vessel.

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OPERATION: 5) Pull discharge device from vessel. Perform the following steps to withdraw liquid from the vessel with the liquid discharge device: 1) Turn the discharge valve fully open and then turn back the valve a half turn. Do not leave the valve in the fully open position. 2) Close the discharge valve to end liquid withdrawal.

6) When stopper has passed rim of vessel, unclip safety cable. 7) Store liquid discharge device in a clean and dry area. 8) Cover vessel. REPLACEMENT PARTS:

WARNING: Cryogenic liquids are extremely cold and can cause severe burns similar to frostbite. See CGA Bulletin No. P-12 Safe Handling of Cryogenic Liquids. (This bulletin may be ordered from: Compressed Gas Ass’n., 4221 Walney Road, 5th Floor, Chantilly, VA 20151.) WARNING: Nitrogen vapors in air may dilute the concentration of oxygen necessary to support or sustain life. Exposure to such oxygen deficient atmosphere can lead to unconsciousness and serious injury, including death.

SPOUT

2 DISCHARGE VALVE

3

PRESSURE GAUGE

RELIEF VALVE

5

WING NUT

WARNING: Modifying safety valves on discharge devices causes potentially hazardous conditions.

1

VENT VALVE

5

RELIEF VALVE

4

6

7

SAFETY CABLE

8 RUBBER STOPPER

REMOVAL OF LIQUID DISCHARGE DEVICE:

22

(22 only on EXT RBR versions)

Perform the following steps to remove the liquid discharge device from the vessel: 1) Open the vent valve to remove all pressure.

9 2) Verify that the pressure gauge reads 0. WARNINGS: Vessel must be completely vented before removing the discharge device. Any attempt to remove the discharge device before the vessel is completely vented may result in serious personal injury.

DIP TUBE

3) Release wing nut. 4) Rock discharge device from side to side to free stopper.

NOTE: If phase separator is required on spout use P/N 11734421.

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REPLACEMENT PARTS CON'T: The following is a list of replacement parts that are common to all discharge devices. Item Number

Part Number

Description

1 2 3 4 5 6 7 Not Shown

1711042 5612941 10664126 2010024 14235804 9027109 2912001 3810209

Vent Valve, 1/4" NPT Spout, 3'8" O.D.T. Discharge Valve, 1/4" NPT Pressure Gauge, 1'8" NPT, 0 - 15 PSIG Relief Valve, 1/8" NPT, 5 PSIG Safety Cable Wing Nut Label, Caution

The following is a list of components which must be ordered for a specific discharge device. Discharge Device Part Number

Rubber Stopper Part Number

Dip Tube Part Number

10668004 10668021

47-1014-7 47-1014-7

90-2712-1 90-2715-1

10668071 10668101 13467208 13464867 13484139

47-1006-7 47-1080-7 47-1006-7 & 13465974 47-1006-7 & 13465974 47-1080-7

90-2719-1 90-2719-1 90-2719-1 90-2709-1 90-2709-1

MVE, BioMedical Group 2200 Airport Industrial Rd., Ste. 500 Ball Ground, GA 30107 Ph 770-721-7700 • Toll Free 1-800-482-2473 Fax 770-721-7701

w w w. c h a r t b i o m e d . c o m

Chart BioMedical, Ltd. Unit 2, Maxdata Centre Downmill Road, Bracknell Berks RG12 1QS, United Kingdom Ph +44(0) 1344 403100 Fx +44(0) 1344 429224 Ref. 11047331 Rev. G 2/12