CHERNE Test-Ball - Safe Inflation Procedures

33
12. PROPER PNEUMATIC PLUG INFLATION.
PLACEMENT OF PLUGS BEFORE INFLATION. In most applications,
plugs can simply be placed into proper position (refer to Section 10 of this
manual) and then inated to the proper ination pressure. The ination is
performed from outside the Danger Zone using an ination hose and a
proper pressure source.
NOTE: Other applications may require a plug to be held in position until the
plug body fully contacts the pipe (eg. attachment of ttings which cause the
plug to tip during ination). From a location outside the immediate Danger
Zone the user may employ a device, such as a pole with attached hook, to
position the plug. The plug is inated using an ination extension hose (or
Poly-Lift Line) until it expands to make pipe wall contact. After initial pipe
contact the user moves to a new position well outside the Danger Zone and
continues ination until the recommended pressure is reached.
USE PROPERLY CALIBRATED PRESSURE GAUGES
to monitor ination
pressure and back pressure. Use of non-calibrated gauges may result in a
condition of over-ination or under-ination (refer to following warnings).
NOTE: Rough handling, contamination or a sharp impact can quickly
cause any pressure gauge to fall out of calibration. Other pressure gauges
(eg. some inexpensive tire type gauges) are extremely inaccurate and
should not be used. The user must select and maintain properly calibrated
pressure gauges for use with pneumatic plugs.
INFLATE PLUG TO RECOMMENDED PRESSURE. Do not exceed this
pressure. Proper ination pressure is clearly marked on each product,
outlined in this booklet and included in Cherne product catalogs and
product specication sheets (refer to following warnings).
INFLATE PLUGS USING A PROPER PRESSURE SOURCE.
A Cherne
Test Pump equipped with a pressure gauge or a regulated air source with
pressure gauge is required.