SPXFLOW 95-03028, Instruction Manual

Page: 9 / 22

9 95-03028 09/2019
Waukesha Cherry-Burrell
®
Brand Colloid Mill Colloid Mill Troubleshooting
Inlet
Outlet
Figure 6
The mill is shipped with oil in the bearing case. The level should be
checked at the oil level hole and if necessary, oil should be added
through the oil fill hole.
Use Mobil oil DTE BB ISO Grade 220 R & O (Rust inhibited) gear
oil. If DTE BB is not available, use S.A.E. 40 non-detergent mineral
oil. The mill is shipped with a solid cap screw in the oil fill hole. This
should be removed and replaced with the breather cap which is
wired to the mill.
Frequency of lubrication is dependent upon tempera ture and moisture
conditions. If the room temperature is normal, 70° to 80° F (21° C
to 27° C), and water does not contact the bearing case, change
the oil every 240 operating hours. When the temperature varies
from hot to cold or the mill is flushed out with water, condensation
will occur in the bearing case, requiring more frequent oil changes.
Normal operating temperature of the bear ing case is 170° to 190°
F (77° C to 88° C).
Colloid Mill Troubleshooting
Problem Likely Cause Solution(s)
Seals leaking Exceeding 150 PSI pressure
limitation of pump
Open up gap reduce pressure
Seal flush water improperly
plumbed
Connect flush water to IN/OUT ports as
stamped on gland
Water pressure too high Adjust to 0.125 to 0.25 gpm (0.47 to 0.95 l/m)
Seals misaligned on pin Re-align seals to proper fit.
Noisy operation /
Excessive power draw
Loose rotor nut causing rotor to
stator contact
Tighten nut to 75 ft-lb.
Check mill rotation (counterclockwise facing
outlet port)
Inconsistent milling
results
Loose adjusting ring Set gap and tighten knurled screw in hole.
Tighten bolt and nut on opposite side.
Worn rotor or stator Replace worn parts
Oil level
Oil drain
Breather cap
Figure 5
Lubrication
The inlet and outlet ports are 2 inch sanitary male threads. The
inlet port is located in the body—its position can be changed. (See
Figure 3 on page 8.) The outlet port is located in the cover of the
mill. The mill must be fed with a pump; a Waukesha Cherry-Burrell
brand positive displacement pump is recommended. The capacity
of the mill is 6.7 to 33.3 gpm (25 to 126 l/m).
Method of feeding and
capacity