SKF FlowMaster II Guía De Usuario Y Mantenimiento página 11

Safety unloader valve
Safety unloader valve (1) († fig. 2, page 12)
is not serviceable Replace if malfunction is
apparent Upon reassembly, tighten to
10 ft-lbf (13,5 Nm)
Safety unloader valve (1) is set to open at
3 750 to 4 250 psi (258 to 293 bar) lubricant
pressure If pressure switch fails to operate
and shut off hydraulic supply to pump, safety
unloader will open at approximately
4 000 psi (275 bar) to relieve lubricant
supply line pressure (safety unloader is
preset and not adjustable)
Automatic
mechanical shut-off
Refer to manual 404758 for automatic
mechanical shut-off
Bare pump assembly
Refer to manual 404554 for bare pump
assembly (30) († fig. IPB 1, page 15)
11