3
operation and maintenance
Alternate procedure:
The cooling tower has an external oil gauge and drain line equipped
with a three-way valve below the oil level gauge. See Figure 1.
1. Remove pipe plug. Turn valve control stem clockwise to open
drain.
2. With Geareducer drained, the three-way valve turned clock-
wise, and the pipe plug removed, connect fill source (usually
a hose to a pump, to the three-way valve).
Pump oil through the hose. Check oil level occasionally by
turning the valve control stem counterclockwise and allowing
the oil level in the sight glass to stabilize.
Continue filling until full level mark is reached.
3. With the oil level at the full mark turn the valve control stem
counterclockwise to close the drain and open the valve to the
sight glass. Remove the oil filling line and reinstall pipe plug
in the three-way valve.
Maintenance of the Geareducer should be scheduled as fol-
lows:
Monthly: Check oil level at least once a month using the fol-
lowing procedure:
Stop the fan drive. Allow ten minutes for oil level to stabilize and
check oil level at the gauge. If needed, add oil to Geareducer. If
oil is added, repeat steps 2 and 3 of recommended procedure
until stabilized oil level is at the proper height.
Semi-Annually: Change oil at least every 6 months or 3,000 hours
of operation. Refer to recommended oil change procedure.
Check the oil level placard location each time the oil is changed.
The “Full” mark on the placard must be at the same elevation
as the “Full” arrow on the side of the Geareducer case. See
Figures 1 and 2.
Oil level gauge vent must be kept open. Inspect at each oil change
and clean when necessary. Inspect internal parts and inside of
Geareducer case at each oil change—see section on inspection
of internal parts.
VENT LINE
OIL FILL PLUG
OIL LEVEL CHECK
INSPECTION
COVER
OIL GAUGE
AND DRAIN LINE
OIL LEVEL
GAUGE
DRAIN PLUG
THREE-WAY
VALVE
OIL GAUGE
VENT
Figure 1
Service Fittings
