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User Manual
4.2A-68351-E05
Centro-Matic Injector SL-1
Page 2 of 5
Injector No. 81713, No. 81713A & No. 81770-1 thru 81770-6
Fig. III Completion of the lubricating phase. As piston (4)
completes its stroke, it pushes the slide valve piston (6) past
the passage, cutting off further admission of lubricant to the
passage. The discharge from chamber (a) of the preset
amount of lubricant to the outlet is completed; piston and slide
valve remain in this position until lubricant pressure in the
supply line is vented (relieved) at the pump.
Fig. IV Pressure relief. After completion of the lubricating
phase, the supply line (lubricant line between pump and
injector) must be relieved from pressure. The pressure at
injector inlet (P1) must drop below 41 bar. The re-charge with
lubricant will be initiated at a pressure of ~ 41 bar, permitting
the compressed spring (5) to release. The spring moves the
slide valve to closed position. This opens the port from the
measuring chamber and permits the lubricant to be transferred
from the top of the piston (4) to the discharge chamber (a).
After the preset amount of lubricant is shifted from chamber
(b) to chamber (a) and the pressure is vented, the injector
returns to its normal (rest) position (Fig. I).
Note: Injector SL-1 is a so-called ‘direct’ single-line metering
device. The injector lubricates under pressure applied by the
pump to the injector piston (4). The spring of the injector is
only for re-charging purposes.
Injector output adjustment:
⇒ See Section 5 ‘Operation’.
Technical Data
Injector type
Part number
Output range
Output adjustment
Operating
pressure )4
Series SL-1
81770 - * Injectors with manifold )1
81713 Single unit injector w. thread )2
81713A Replacement injector
0,131-1,31 cm3
Setting by adjusting screw,
min. to max. = 8 turns )3
minimum
normal
maximum
128 bar
173 bar
240 bar
Vent pressure < 41 bar
Steel, Seals : FKM
TMIN
TMAX
- 26° C
+ 176° C
Constr. materials
Amb. temperature
(constr. materials)
Connections:
Manifold
2 connections of 3/8“ NPTF female
Injector
Outlet: 1/8“ NPTF female
Note:
)1 Character - * of part number stands for substitution
by number of injectors mounted on manifold:
- 1, - 2, - 3, - 4, - 5, -6.
)2 Single unit injector not illustrated.
Injector inlet: 3/8“ NPTF male.
)3 Attention: Check output if Adjusting Screw is adjusted
to less than ½ turn from minimum.
)4 ‘normal’ = recommended operating pressure.
During pause time, after completion of the lubrication cycle, a
pressure relief below 41 bar must follow.
Also note: When used together with injectors type SL-32 & SL33 in a system, the pressure relief must be < 13 bar.
Dimensions
Assy. Unit
Manifold
-1
No. 1 2 6 5 8
-2
No. 1 1 9 6 2
-3
No. 1 1 9 6 3
-4
No. 1 1 9 6 4
-5
No. 1 1 9 6 5
-6
No. 2 4 6 9 6 5
* Manifold with 1 mtg. hole
Dim. A
*
*
32 mm
64 mm
95 mm
127 mm
Dim. B
64 mm
76 mm
108 mm
140 mm
171 mm
203 mm
4. Erection & Installation
CAUTION
Warning
Never exceed the maximum working pressure of
the Centro-Matic system.
Do not carry out any assembly or disassembly
works when the system is pressurized or
pump/machine are in operation.
Before using synthetic lubricants, check
compatibility with the construction materials of
injectors and other system components.
Required tools
Ring & Open end wrenches of inch-size series are required for
the installation of injectors.
Mounting of injectors
The injectors have two outlets; one outlet must be be closed
by the fitting supplied with. The outlet for connecting the feed
line has a female thread of 1/8“ NPTF.
If the lube point (bearing) to be connected requires more than
1,31 cm3 of lubricant per lube cycle, the outlets of two or more
injectors can be externally linked by a connector tube for
combined discharge of lubricant; one connector tube is
required for each injector connection.
The injector manifolds have a female thread of 3/8“ NPTF at
both ends.
Order connectors separately if required.
The manifolds have mounting holes; see figure above.
• Injectors can be mounted in any position.
Mount injector in a position which permits access for output
adjustment and visual function control of the injector.
• Location of injectors
⇒ See drawing & instructions of the machine manufacturer.
• Allocation of injector/lubricating point
⇒ See drawing & instructions of the machine manufacturer.
Subject to change
LINCOLN GmbH & Co. KG ∗ Postfach 1263 ∗ D-69183 Walldorf ∗ F a x + ( 4 9 ) 6 2 2 7 3 3 2 5 9 ∗ T e l + ( 4 9 ) 6 2 2 7 3 3 0