Tank Maintenance    

8029 PHLOX ST.

DOWNEY, CA. 90241

1-800-421-7545

sales@thompsontank.com

 

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MAINTENANCE INSTRUCTIONS -- AIR SYSTEM

Maintenance procedure should be performed one (1) week after new equipment is in operation & every 90 days thereafter.

1100/1101 FLOAT SHUT-OFF VALVE

1.         Inspect condition of 1101-E Buna-N/Hypalon Valve Seat.  A swollen, cracked or pitted valve seat will not make a positive seal resulting in material pullover, and must be replaced.

2.         Check 1101-E Valve Seat alignment by inserting a slip of paper (1/4" x 3") between the valve seat & 1100/1101-A Valve Body, close the Float Shut-Off Valve manually using the 1101-H Lower Arm, exerting a slight pressure on the valve seat.  If the paper is easily removed at any location under the valve seat, adjustment is required.

ADJUSTMENT PROCEDURE

           A.        Adjust 1101-D Cone Point Set Screws until the spring loaded portion of the 1101-B Pivot Assembly is compressed 50% of its adjustment.

           B.         Adjust 1101-G Upper Arm on the 1101-B Pivot Assembly using the two (2) Hex Head Adjustment Bolts to center valve seat.

           C.        Valve Seat alignment should self adjust when centered. If not replace Spacer Bushing. When the slip of paper is not easily removed at any location under the Seat Valve, it is properly aligned. 

NOTE:            A positive seal between Valve Seat and Body is critical to prevent pullover.

3.         Lubricate 1101-B Pivot Assembly with NLG1 & 2 multi purpose lithium grease.

4.         Inspect 1101-J Float Ball for leaks or accumulation of liquid and replace as required. NOTE:  Excessive accumulation of material in 1107 Vacuum Scrubber of 1106 Liquid Entry Preventor is a prime indicator that the 1100/1101 Float Shut-Off Valve is not operating properly.  If let   uncorrected, material will pullover, resulting in possible pump damage.

1106 LIQUID ENTRY PREVENTOR

1.         Check 1103 Float Valve for proper operation. Inspect condition of 1103-E Buna-N/Hypalon Valve Seat and 1103-G Float Ball.

2.         Inspect 1106-B 12" Buna-N/Hypalon Cover Plate Gasket. 

NOTE:            A deteriorated Gasket will result in loss of vacuum.

3.         Lubricate 1106-J Drain Valve with ACF-105 grease.  Drain on pressure only. Do not open on vacuum.

1107 VACUUM SCRUBBER

1.         Steam clean or flush interior of 1107 Vacuum Scrubber with the 1107-F Drain Valve in the open position to remove any accumulation of debris and to assure that the drain line is not plugged.

2.         Pressure or vacuum test 1107 Vacuum Scrubber Assembly, including drain line, for leaks. 

NOTE:            It is critical that the Vacuum Scrubber and related piping do not leak, causing material pullover.

3.         Lubricate 1107-F Drain Valve with ACF-105 grease.  Drain on pressure only. Do not open on vacuum.

1115 BLEEDER ASSEMBLY

1.         Steam clean or flush 1115 Bleeder Assembly and check for leaks in piping.

2.         Lubricate 1115-A Bleeder Valve with ACF-105 grease.

PRESSURE INJECTION SYSTEM (OPTIONAL)

1.         Check condition of Shut-off Valve and Check Valve.

2.         Clean Injection Line with air pressure or by flushing.

1102 LIQUID LEVEL INDICATOR

1.         Check 1102-A Packing Gland for leakage and tighten or replace 1102-A-5 Teflon Packing as required.

2.         Check 1102-G Yoke Assembly for freedom of movement and inspect 1102-J Float Ball.

1118 DOME AND 1116 WASHOUTS

1.         Inspect 1118-A and 1116-A Covers for excessive corrosion and replace as required.

2.         Inspect 1118-B and 1116-B Buna-N/Hypalon Gaskets.

NOTE:            A deteriorating gasket will result in loss of vacuum.

PRESSURE RELIEF VALVE

1.         In addition to D.O.T. 180.405(h) Inspection Requirements, the Pressure Relief Valve should be inspected for general condition and bench tested to relieve at required setting. As may be required depending on operating conditions.

GAUGE LINE ASSEMBLY

1.         Clean gauge lines with air pressure or by flushing with rear Drain-Cock removed.

2.         Check 30/60 Vacuum-Pressure Gauges for general condition and accuracy.

 

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Copyright © 2004 Thompson Tank Inc.
Last modified: October 13, 2005