(800) 471-8769
3
Copyright 2022 © Paragon Tank Truck Equipment
Melt Plug Information
The fast acting melt plug is designed to reduce the blower operating pressure and
temperature when the machine is operated beyond its limits.
*
There are two plugs located near the blower flanges. When the blower is operated
beyond its operating range, the following will happen:
Loosen
Left Hand Thread
• The temperature increases.
• The solder
(Figure 1, Reference # 1)
melts.
• The thin disc
(Figure 1, Reference # 2)
is released.
• Pressure drops 4-6 psi at 1800 RPM.
• Audible sound from the plug alerts the driver of a problem.
• Operator should shut down blower and try to locate the problem.
• When the problem is corrected, operator can fit a new plug (left hand
thread) or use the plug from the suction side of the machine.
Note: Replace blown melt plugs immediately to prevent further damage to the
blower. Do not re-install blown melt plugs.
Fig. 1
Caution: If problem cannot be corrected, do not increase blower speed as this can cause
further damage to the blower. This overheating condition should be reported to
the maintenance department immediately.
*Vacuum applications require a vacuum valve for blower protection.
Caution: Do NOT operate blower after a melt plug has blown.