CAMCORP HVP with Duroflow Blower - Manual (Page 67)

D--9--610 Page 12
Flush the oil whenever a change is
made from one type of oil to another.
Flush the oil whenever a change is made from one type
of oil to another. Drain the current lubricant as
thoroughly as possible. Refill with the new lubricant.
Fill to normal level of the blower, which is at the middle
of the sight glass when the machine is not operating.
Run the blower for one hour. Shut off the blower and
drain the lubricant completely. Refill the blower again
with the new lubricant.
Air Seal Vent Systems
All DuroFlow blowers are designed with a vent opening
between the air chamber seal and the oil sump seal that
vents to atmosphere any air which escapes from the air
chamber.
The vent prevents pressurization of the oil sump and
must be left open to atmosphere. The vent holes are
tapped 3/8” NPT to permit installation of a venting line.
Do not plug these vent holes (see FIGURE 1--2, page
5).
Do not plug vent holes or oil sumps
may pressurize causing loss of oil,
excessive heat and serious damage
to the machine.
Oil Sump Breathing System
All DuroFlow blowers are designed to permit their oil
systems to breathe freely to prevent pressurization of
the oil sumps. Breather filters are required to keep
contaminants from entering the oil sumps (see Figure
1--1, page 4). Series 30 models require only one
breather filter due to their interconnected shaft and
gear end oil sumps. In these models, breathers equal-
ize the pressure between the interconnected oil sumps
and permit the equal distribution of oil between the gear
and drive oil sumps. Series 70 models do not have in-
terconnected oil sumps and require two breather filters,
one on each sump.
Breather filters are easily cleaned by washing in
commercial solvent and drying with compressed air.
Clean at every oil change to assure proper venting.