REYMSA COOLING TOWERS, INC.
www.reymsa.com
The
All-Fiberglass
Cooling Towers
73
Maintenance
D.5 GEAR REDUCER
Inspection
▪ Daily visual inspections and observation for oil leaks and unusual noises and vibrations are recommended.
If any of these occurs, the unit should be shut down and the cause found and corrected.
▪ Periodic checks should be made of the alignment of all components of the system. Also, all external
fasteners should be checked for tightness.
Maintenance
By following the next procedures, gear reducer will provide years of useful service.
1. Check oil level weekly with each unit stopped. Add oil if level is below oil level indicator.
2. The original oil should be replaced after 500 hours or four weeks of operation, whichever comes first.
3. After the initial oil change, oil should be changed every 2500 hours or every six months, whichever
comes first.
4. Special precautions are necessary during periods of inactivity in excess of one week. When the
internal parts are not continually bathed by the lubricant as during operation, the gear reducer
is particularly vulnerable to attacks by rust and corrosion. For best results, let the drive cool for
approximately four hours after shutdown, start the fan and let run for approximately five minutes.
This will coat the internal parts of the drive with cool oil. Thereafter, run the fan for five minutes once
a week throughout the shutdown period to maintain the oil film on the internal parts of the gear drive.
5. If the drive is to be inactive for a prolonged period, it is recommended that the unit be completely
filled with oil. This can be accomplished by filling through the air breather port. Cover the drive with
a tarpauling or other protective covering. Drain the excess oil before returning the gear drive to
service.
6. Use only Rust and Oxidation Inhibited Gear Oils in accordance with AGMA (American Gear
Manufacturers Association). For general operating conditions, use a lubricant having an AGMA
lubricant number of 5. Gear oils containing Extreme Pressure (EP) additives are not recommended.
Do not proceed without disconnecting and locking out power for the fan motor.
Failure to do so may result in personal injury or property damage.
CAUTION
For reverse operation please contact REYMSA.
CAUTION
When using a Variable Frequency Drive (VFD), do not operate gear drive below 450
RPM fan motor speed.
CAUTION
OIL CAPACITY
GEAR REDUCER MODEL GALLONS LITERS
85 1 4
110 2 8
135 3 11
155 5.5 21
Table D-2:
Oil capacity for gear reducer models.
Note: Please contact REYMSA to confirm the proper gear reducer model of your Cooling Tower.
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