Blackmer 109-C00 Page 3 of 4
INSTALLATION
NOTICE
This product must only be installed in systems which
have been designed by those qualified to engineer such
systems. The system must be in accordance with all
applicable regulations and safety codes and warn of any
hazards unique to the particular system.
ALIGNMENT ADJUSTMENT
The gear reducer can be moved vertically on its bracket
mount to raise or lower the output shaft (slow speed shaft) to
align with the pump shaft.
The reducer can also be rotated on the bracket ring to
facilitate both horizontal and vertical alignment of the input
shaft (high speed shaft) to the motor shaft. This flexibility in
movement eliminates the need for shims under the motor or
driver in most cases. NOTE: Refer to Blackmer Dimensions
109-103 for maximum variation of shaft alignment to maintain
proper gear reducer lubrication.
Follow these steps to align the reducer:
1. Align the output shaft to the pump shaft by loosening the
four (4) setscrews (108K) and locknuts in the mounting
bracket (108L), enabling the reducer to slide freely on the
slider posts.
2. Once the proper alignment is determined, retighten the
setscrews and locknuts. Leave the torque arm locknuts
loosened for the next step.
3. Align the input shaft to the motor shaft by loosening the
four (4) bracket nuts (108D) in the bracket ring (108A)
enabling the reducer to rotate freely. If the reducer sticks
on the mounting bracket, tap it lightly with a mallet.
4. After obtaining the correct alignment, be sure to retighten
the bracket nuts and the upper and lower locknuts of the
torque arm.
COUPLING ALIGNMENT
Both angular and parallel coupling alignment MUST be
maintained between the pump, gear, motor, etc. in
accordance with manufacturer’s instructions. Verify coupling
alignment after installation of new or rebuilt pumps. See fig. 1.
1. Parallel alignment: The use of a laser alignment tool or dial
indicator is preferred. If a laser alignment tool or dial indicator
is not available, use a straightedge. Turn both shafts by hand,
checking the reading through one complete revolution.
Maximum offset must be less than .005” (125 microns).
2. Angular alignment: Insert a feeler gauge between the
coupling halves. Check the spacing at 90º increments around
the coupling (four check points). Maximum variation must not
exceed .005” (125 microns). Some laser alignment tools will
check angular alignment as well.
3. Replace the coupling guards after setting alignment.
MAINTENANCE
NOTICE:
Maintenance and troubleshooting must be done by an
individual experienced with pump and reducer
maintenance and the type of system involved.
NOTICE:
To avoid possible entanglement in moving parts do not
lubricate pump bearings, gear reducer or any other parts
while the pump is running.
CAUTION: The normal full load operating temperature of the
gearcase is 180ºF (82ºC) – too hot to touch with the bare hand.
LUBRICATION
Gear reducers are not lubricated at the factory. Oil MUST
be added before starting the pump.
Horsepower calculations for Blackmer reducers are based on
75°F (24°C) ambient air temperature; 200°F (93°C) maximum
oil temperature using synthetic oil.
Blackmer recommends using synthetic oil with oxidation
inhibitors and is compatible with Buna elastomers. Use
synthetic oil AGMA Viscosity Grade 4 or ISO Viscosity Grade
150 such as Mobil SHC 629, Mobil SHC 630, Shell Omala S4
GX 150, Castrol Isolube EP 150 or equivalent.
To add oil to the gear reducer:
1. Remove the oil level plug (29) and the fill and vent plug
(76C). NOTE: The vent fitting in the fill plug (76C) should
be kept clean to prevent expansion from forcing oil leaks at
the shaft.
2. Add oil through the filler hole until oil runs out of the oil level
hole – approximately 1.25 qt. (1.18 l) depending on the
orientation of the reducer mounting.
3. Replace the oil level plug and the fill and vent plug.
4. After the first two weeks of operation, the oil should be
drained, the gearcase flushed, and new oil added.
For normal operation, the oil should be changed every six
months or 1000 hours, whichever is shorter. If operation is
accompanied by frequent and wide changes in temperature,
or if the unit operates in an unusually moist or dusty
atmosphere, the oil should be changed every 500 hours or
every three months. NOTE: To maintain proper gear reducer
lubrication, refer to Blackmer Dimensions 109-103 for
maximum variation of shaft alignment.
REDUCER DISASSEMBLY
The gearcase on the bracket mounted gear reducer can
usually be removed from its bracket without disturbing the
motor or pump mounting.
1. Take apart the couplings and remove the six bracket nuts
(108D) and lockwashers (108C) from the bracket ring. Also
remove the upper locknut and lockwasher from the torque
arm (108E).
2. Once the bracket nuts are removed, rotate the gearcase on
the bracket and swing the input shaft away from the motor.
3. The gear reducer can then be lifted off the pump with the
bracket ring and studs still intact.
