Pressure Relief Valves - Husqvarna CRT48-33K Operator's Manual

CRT 48-33K
4.10

Pressure Relief Valves

Locations The primary pressure relief valve (a) is located on the LP cylinder.
The secondary pressure relief valve (b) is located on the gas supply hose.
Function LP system pressure varies depending on the ambient temperature in which the
machine is being operated. Normal LP system pressure will range from about
2.76–12.41 bar (40–180 psi). If the pressure in the LP tank reaches 24.13 bar (350
psi), the primary pressure relief valve (a) will open automatically. Excess LP gas is
then released (vented) into the atmosphere. Venting continues until the system
pressure returns to normal.
The secondary pressure relief valve (b) is set at 27.58 bar (400 psi). This valve
functions as an emergency backup in case the primary pressure relief valve does
not open. It is rotated downward so that excess LP gas vents away from the
operator.
WARNING
Asphyxiation and chemical burn hazards.
 If either relief valve is venting, do not inhale or touch released LP gas.
wc_tx002045gb.fm
a
b
41
Operation