HAYWARD GORDON LTD
Page
9
Rev:
1
HRF Series Mixers
Date 11/99
Section: RF
LUBRICATION
BEARINGS
The bearing located in the pedestal area of the mixer has been lubricated prior to shipment from
the factory; however, at 6-8 month intervals the bearing should be re-greased. Using the grease
fitting supplied, add grease slowly with shaft turning until a slight bead forms at the lip seal. The
grease used should be a high grade, non-separating, ball bearing grease of NLGI No. 2
consistency suitable for operating temperatures to 200
o
F. Grease should be non-reactive,
oxidation resistant to ball bearings and should not separate below 300
o
F. It should not precipitate
sediment or contain grit, abrasives or fillers.
MOTORS and GEAR DRIVES
Motor bearings are provided with sealed grease packing and do not have grease fittings. Refer to
the attached Manufactures literature for further details.
The mixer drive oil should be changed every 10,000 hours of operation or every 2 years which
ever is shorter. Under extreme environmental conditions or very high operating loads, more
frequent oil changes are recommended. If your mixer operates under such conditions, you must
pay special attention to regular oil changes and to inspecting the oil for evidence of deterioration.
If your mixer operates under any of the following conditions, more frequent oil changes will be
necessary.
1.Heavy intermittent loads that cause the mixer drive housing temperature to rise rapidly, and
then cool when loads decrease.
2.Ambient temperature and humidity conditions that could cause moisture condensation on the
inside walls of the mixer drive.
3.Oil temperatures during mixer operation that exceed 200
o
F
4.Mixer drive exposure to unusually dusty atmospheres, or to corrosive or reactive vapors.
SEALS
Stuffing box seals
equipped with a lantern ring, lube fill fitting and a lube relief plug, should be
re-lubricated on a regular basis - 2-3 month intervals for maximum performance. Remove the lube
relief plug and add new lubricant at the lube fill fitting until new grease is evident at the relief.
Reinsert the relief plug. Any fluid with grease like viscosity, which is compatible with the process
fluid may be used as stuffing box lubricant.
Mechanical seals
require that the seal cavity at all times be filled with proper lubricant for
satisfactory operation - see INSTALLATION, Seals. The lubricant can be any low viscosity fluid
with reasonable lubricity which is compatible with the process fluid and which is stable over the full
range of pressures and temperatures at which the seal will be operated. Common seal lubricants
are light mineral oil, ethylene glycol and demineralized water with glycerine.
