Taylor-Wharton RS-234 - Manual (Page 15)

14
Trouble Shooting
The following chart is provided to give you some guidance in determining the probable cause and suggested corrective
action for some problems that may occur with cryogenic liquid containers.
TROUBLE SHOOTING CHART
Symptom Possible Cause Corrective Action
1. Consistently low operating
pressure a. Relief valve open at low pressure.
b.
Economizer valve stuck open.
c.
P.B. valve closed.
d.
Defective P.B. regulator.
e. Leaks in valves or plumbing.
a. Remove and replace relief valve.
b.
Remove and replace economizer
valve.
c.
Open P.B. Valve.
d.
Adjust or replace regulator.
e. Leak test and repair leaks.
2. No pressure shown on gauge. a. Bad Pressure Gauge.
b.
Open inner container safety head.
c.
Leaks in valves or plumbing.
d. Empty
tank.
a. Remove and replace bad gauge.
b.
Remove and replace safety head.
Pressurize container and check
relief operation.
c.
Leak test and repair leaks.
d. Fill
tank.
3. Container is cold and may have ice
or frost on outer casing. Will not
hold liquid overnight. Relief valve
is venting gas. a. Vacuum loss. Check outer casing
bursting disc.
b. Defective/leaking
pressure
building regulator.
a. Consult with Taylor-Wharton for
course of action. Do not attempt
to put additional liquid in
container.
b.
Repair or replace regulator.
4. Ice formation on bottom of
container when P.B. valve is
closed. a. Pressure building hand valve not
closed properly. a. Replace valve.
5. Container vents through the relief
valve when in use. a. Pressure building regulator set
above relief valve setting.
b.
Economizer valve not functioning.
c. Poor vacuum.
a. Remove and reset or replace
regulator.
b.
Repair or replace valve.
c. Consult with Taylor-Wharton for
course of action.