Vermeer McLaughlin V25, Operator And Maintenance Manual

Page: 129 / 182

V25/VX30G/VSK25/VSK30G Vacuum Excavators Maintenance - 50 Service Hours or Weekly 75-5
P
RESSURES
- C
HECK
Fluid Pressure
View pressures on the water pressure gauge during operation of the following tools. View standby water
pressure when tool is not in use.
• Standby Water Pressure: 2900–3100 psi (200–214 bar)
• Rotary Lance (VX30 & VSK30 only): 2700–3000 psi (186–207 bar)
• Water System Wand: 1400–1600 psi (97–110 bar)
• Potholing Tool: 1600–2000 psi (110–138 bar)
Vacuum / Pressure
• Ensure gauge is at zero when engine is OFF. If not, refer to “Vacuum Gauge - Reset,” page 50-26 .
• When machine is in operation, full vacuum should be 14–16" (36–41 cm) HG. In high altitude locations, full
vacuum should be 12–14" (30–36 cm) HG.
• When machine is in operation, pressure should be 4–6 psi (28–41 kPa).