allen AW16-H, Safety & Operation Manual, Page: 31 / 78

CAUTION: USE LP-GAS CONTAINERS IN PROPER POSITION
Most LP-gas appliances for cooking, heating, lighting, water heating and refrigeration are designed to operate on
LP-gas vapor only. Therefore, all LP-gas containers designed for vapor service must be transported, installed and
used in the proper position. Do not transport, install or use a vertical cylinder in a horizontal or upside down posi-
tion. Proper care must be taken to position a horizontal container in the correct position for vapor withdrawal. Liquid
LP-gas could enter the system designed for vapor only, possibly creating a hazardous condition.
Always close the valve and install a POL plug on a POL valve or a dust cap on an ACME/Type 1 valve when trans-
porting or storing disconnected containers (full or empty).
All LP-gas containers must be securely oriented in the proper position for intended use.
FILLING YOUR LP-GAS CONTAINER
Only qualified persons should fill your LP-Gas containers.
CAUTION: OVERFILLING IS HAZARDOUS!
Do not
allow your LP-gas container to be overfilled. Stop filling when liquid appears at the fixed level gauge. Bleed
off excess propane in a safe area. Most LP-gas containers are equipped with a fixed liquid level gauge which con-
tacts the liquid level at 80% of container capacity, allowing 20% for expansion. LP-gas containers not equipped with
a fixed liquid level gauge can only be filled by weight.
LP-gas containers must not be filled over 80% of total capacity. Propane expands approximately 1.5% for each 10°
F temperature rise. Pumps do not stop filling “automatically.” Pumps “by-pass” when containers are dangerously
filled to total capacity. If overfilled, excessive pressure could develop within the container causing the relief valve to
open and release flammable gas.
The fixed liquid level gauge is used only to determine safe fill levels and does not indicate lower levels. LP-gas con-
tainers are available with visible gauges that monitor the amount of gas in the container at all times, reading from
full to empty. Do not use visible gauges for filling.
PURGING OF AIR FROM LP-GAS CONTAINERS
Air in LP-gas containers is a contaminant. Purging is done prior to initial filling to remove the air. If the container is
not properly purged, air in the container dilutes the LP-gas vapor. Failure to purge may cause excessive tank pres-
sure, slow filling and poor appliance operation. Appliances then require constant adjustment and pilot lights won’t
stay lit. This condition would exist until all air is depleted, leaving pure LP-gas vapor. Have your LP-gas container
properly purged.
1.5 - Propane Operating Safety, continued
SECTION 1
SAFETY
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