Masterflex E/S Manual De Operación página 11

Motor Brush Check/Replacement (See Figure 3)
WARNING: Turn drive off, remove all the power to the
unit, including the AC/DC Power Sup-
ply/Converter, Automotive Power Adapter or
other external power source if present before
servicing the motor brushes. Place the Mode
of Operation Switch (RUN/CHARGE) in the
"CHARGE" position and all other switches in
the off position. This will help prevent acci-
dental activation of the drive mechanism so
fingers or loose clothing will not get caught
in the drive mechanism.
NOTE: The brushes should be checked every 2000 operating
hours or every 6 months or if erratic operation occurs.
A. Place all control panel switches in the off position and
disconnect the AC/DC Power Supply/Converter if pres-
ent.
B. Remove the twelve (12) screws holding the control
panel assembly to the housing using a #2 Phillips
screwdriver.
C. Gently remove the control panel from the housing and disconnect the wires from the battery.
D. Remove the brushes using a screwdriver and rotate the brush holder 90° CCW. The brush should pop out.
E. Vacuum any brush dust from the brush holder openings.
F. Inspect the brushes. If they are 0.160 in (4 mm) or less in length, replace the brushes.
G. Repeat step D to remove the other brush.
H. Reverse the process to reinstall the brushes, reconnect the battery and install the control panel. Connect the
RED wire to the battery terminal marked + (positive). Connect the BLACK wire to the battery terminal marked
– (negative).
Replacing the Pump Head Sealing Gasket (See Figure 4)
A gasket to seal the Pump Head is supplied with each unit and is
located on the control panel around the drive output shaft. The
gasket will deteriorate with time and frequent pump head
changes. To maintain the integrity of the IP protection of the unit,
the gasket should be changed if deterioration is noted, a leak de-
velops, or after one to two years of use, whichever comes first.
To replace the gasket, peel the gasket and its adhesive backing
from the control panel. Make sure to remove all gasket residue. An
outline of the gasket is shown on the control panel. Remove the
release liner from the adhesive backing of the new gasket and
position the new gasket within the gasket outline shown on the
control panel.
Motor
Brush Assembly
FIGURE 3. MOTOR BRUSH REPLACEMENT
FIGURE 4 PUMP HEAD SEALING GASKET
10
Cap Motor Brush
Pump Head
Sealing Gasket