Blakeslee UC-21, Owner'S Manual

Page: 8 / 22

SECTION III MAINTENANCE & CLEANING
Maintenance:
Motor: No lubrication required
Pump: No lubrication required
Wash Arms:
a. Wash arms, upper and lower, should turn freely and continue turning for a few seconds after
being whirled by hand.
b. If the scrap screen is not properly in place, obstructions may clog the wash arm nozzles. The
wash arms are easily removed for cleaning.
c. To remove the upper & lower wash arms, turn the individual arms clockwise and remove.
d. Push the obstruction into the arm and flush out.
e. To reassemble push arm in hole and turn counter clockwise.
Rinse Arms:
a. The rinse arm nozzles will need frequent cleaning if your water contains lime or other solids.
b. To remove the rinse arms you should first remove the wash arm assemblies.
c. On upper wash arm assembly remove knob and lower assembly. On lower remove knob and
lift assembly. NOTE: Take care not to lose bushings.
d. Remove rinse arms by taking set screw out of top and pulling out arm.
e. Push the obstruction into the arm and flush out.
f. To reassemble push arm in hole and align screw hole with hole in top, insert and tighten set
screw.
g. Put assemblies back in and install knob. Check to make sure assemblies turn freely.
-5--
FIGURE 5
Drain Outlet
Standpipe
Wash Arm
Rinse Arm
Knob
-5-