8
Instruction 2002-0010
Vacuum Pump Models QV2 & QV5
Replacing the Vacuum Pump Oil
Using.clean,.fresh.vacuum.pump.oil.is.a.critical.part.of.achieving.
the.desired.vacuum ..
When.replacing.the.vacuum.pump.oil,.first.thin.down.the.oil.by.
running the pump for 30 minutes with the intake closed.
Stop.the.pump,.remove.the.exhaust.fitting,.remove.the.oil.drain.
plug.and.allow.the.oil.to.drain ..
Note:
.
The exhaust fitting must be removed to allow the oil to drain
due to a one-way valve located inside the fitting.
Run.pump.for.1–2.minutes.with.intake.open.while.adding.a.small.
amount.of.clean.vacuum.pump.oil.through.the.intake.to.flush.out.
any.residual.oil.in.the.pumping.chamber ..Repeat.this.process.sev-
eral.times.until.the.pump.is.clean ..
Replace.the.oil.drain.plug,.and.then.fill.the.oil.tank.through.the.
oil.fill.access.with.fresh.vacuum.pump.oil.to.the.desired.level.as.
viewed.through.the.sight.glass ..
After.filling.the.oil.tank,.reinstall.the.exhaust.fitting .