User's Manual

LTL-400Thrif-T Luber Low-Pressure Orifi ce Lubrication System
SYSTEM DESIGN & COMPONENT SELECTION
CONT'D
Orifi ce Selection
1. Select orifi ce size based on fl ow requirements.
2. From our example, we would have 24 total lube points.
(Bottom of column 3, Design Chart A). They are in fi ve sizes,
as follows:
• (4) Size “0”
• (4) Size “2”
• (8) Size “2/0”
• (4) Size “3/0”
• (4) Size “4/0”
3. Select orifi ce type based on orifi ce function.
• Type “A” Orifi ce – These orifi ces are used when
metering unit is mounted directly at the bearing point
and at the end of the pressure line.
• Type “B” Orifi ce – These orifi ces are used when
metering unit is mounted into “tee” heads, or junction
bars, and then connected to bearing point by 4 mm
(5/32 in. ) O.D. tubing.
• Type “C” Orifi ce – These orifi ces are used when
metering unit is mounted directly at the bearing point,
and used in conjunction with “tee” head to provide for
two (2) or more tube connections.
4. For the example, we would then select:
• (4) Type “TLO-B-O”
• (1) Type “TLO-A-2”
• (2) Type “TLO-B-2”
• (1) Type “TLO-C-2”
• (8) Type “TLO-B-210”
• (4) Type “TLO-B-3/0”
• (4) Type “TLO-B-4/0”
Pump Selection
1. Select Type of pump — Manual or Electric. Consider:
• Cost
• Preference
• Size of System
2. If manual pump is chosen, select output. Multiply the value
in column 5, Chart A (lube volume cu.in./hr.) by number of
hours between lube applications. Set pump output equal to
or greater than this total.
If, in the example, we were using a manual pump (system is
realistically too large for manual pump), the pump output is
factory set @ .50 Cu.in./stroke. To lubricate machine twice
per shift (every 4 hours), we would multiply 1.437 (total lube
volume cu.in./hr) by 4 (hours between lube applications). The
result would be 5.748 cu.in. Pump would therefore require
11.5 or 12 full strokes (5.748 req.) every four hours.
.50 output
3. If an electric pump is chosen, determine the type control
needed.
• Remote Control – The pump motor would have to be
actuated to provide suffi cient “On time” to meet total lube
volume requirements. Pump output is 6.9 cc (.420 cu.in.) per
minute at 60 Hz and 5.77 cc (.350 cu.in.) per minute at 50
Hz.
In our example, at 60 Hz the pump would have to
be actuated to run 3.4 minutes per hour:
(1.437 lube req.)
.420 output
• Time Control – Set volume control of the pump to the total
system requirement.
In the example, we chose the Time Control Pump. The timer
would be set at 3.42 minutes “On time” with one hour cycle
time at 60 Hz which would delivery 1.437 cubic inches.
Accessories
1. Select as required:
• Gauge (Electric Pump)
• In-Line Filter (Electric Pump)
• Anchor Blocks
• Fittings
• Manifold Bars
• Tube Clips
• Tubing
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