SKF Multilube Operation manual

SKF Multilube
Operation and
service manual
SKF Multilube
Central lubrication system

09.05.2008
Table of contents
General system description ................................................................................................................. 1
Safety instructions............................................................................................................................................................................... 1
General information on centralized lubrication system ................................................................................................................. 1
Multilube-central lubrication system................................................................................................................................................ 1
Diagram for Heavy-system................................................................................................................................................................ 2
Diagram for Twinheavy-system........................................................................................................................................................ 3
Multilube pumping unit ....................................................................................................................... 4
General description ............................................................................................................................................................................. 4
Design.................................................................................................................................................................................................... 4
Operation .............................................................................................................................................................................................. 5
Filling the lubricant reservoir of the pumping unit ......................................................................................................................... 5
Technical specification ........................................................................................................................................................................ 8
B-doser groups, Heavy-system ........................................................................................................11
General description ........................................................................................................................................................................... 11
Design.................................................................................................................................................................................................. 11
Operation ............................................................................................................................................................................................ 11
Adjustments........................................................................................................................................................................................ 12
Technical specification ...................................................................................................................................................................... 12
Assembly B-dosers ........................................................................................................................................................................... 16
SMG-dosers, Twinheavy-system ......................................................................................................17
General description ........................................................................................................................................................................... 17
Design.................................................................................................................................................................................................. 17
Operation ............................................................................................................................................................................................ 17
Adjustment ......................................................................................................................................................................................... 18
Technical specification ...................................................................................................................................................................... 19
SMG-doser spare parts .................................................................................................................................................................... 21
Operation of user interface JB-103..................................................................................................22
Normal functions ............................................................................................................................................................................... 22
Functions ............................................................................................................................................................................................ 23
Electric connections in the systems ................................................................................................................................................ 25
Multilube-system monitoring............................................................................................................26
General................................................................................................................................................................................................ 26
Doser inspections...............................................................................................................................26
SMG dosers ........................................................................................................................................................................................ 26
B-dosers ............................................................................................................................................................................................. 26
Choosing the lubricant.......................................................................................................................27
Multilube-system troubleshooting....................................................................................................28
System troubleshooting.................................................................................................................................................................... 28
Warnings............................................................................................................................................................................................. 29
Contact information...........................................................................................................................30

1
SKF Multilube central lubrication system
General system description
Safety instructions
Operation
Safemobe lubrication devices and systems are designed and manufactured for centralized
and automatic lubrication of vehicles and machines. No other use is allowed.
Pumps
The pumps in central lubrication systems are pneumatically or electrically (12 V or 24 V DC)
operated. When servicing the system, the operating power of the pump must be switched
off.
Piping, hoses and connectors
Opening of piping, hoses, and connectors is allowed only when unpressurized. Before open-
ing, make sure that you also switch off the operating power of the pump.
Springs
The lubricant reservoir contains a guide piston spring. Remember this when opening the
reservoir!
General information on centralized lubrication system
Accurate lubrication prevents damages and shutdowns caused by inadequate lubrication.
The service life of process equipment and machinery is extended and both energy consump-
tion and the used amount of lubricant are reduced. Thanks to automation, optimum lubrica-
tion is achieved and the burden of the environment is minimized. All this brings savings.
Automation increases work safety, as equipment and machinery does not have to be lubri-
cated manually during operation.
SKF Multilube-central lubrication system
SKF Multilube system is a single- or dual-line (Heavy- or Twinheavy) central lubrication
system, in which the lubricant is pumped through piping to the dosers. Dosers feed the pre-
set amount of lubricant to the lubrication points.
The system operation is controlled and monitored by a control unit. Control unit controls the
system according to preset starting interval and monitors system pressurization and the
amount of lubricant. If the pressure does not reach the preset value during the maximum
pressurization time or if the amount of lubricant drops to the low level limit, the control unit
will inform of a malfunction. The control unit has an interlocking feature.

4
SKF Multilube pumping unit
General description
The pumping unit is designed for pumping lubricant into central lubrication system.
Design
Pumping unit comprises of a body (pos. 1) and a lubricant reservoir (pos. 2).
The body comprises of a pump element (pos. 3), an electric motor (pos. 4), a line valve
(pos. 5), a pressure relief valve (pos. 6) and a heating element (pos. 7). Pumping unit is con-
trolled by a circuit board (pos. 8). (If external control is used, user interface and circuit board
are replaced with relays.) Pumping unit is equipped with a pressure sensor (pos. 9) for each
line which can be replaced with an external pressure control unit.
Lubricant reservoir is equipped with a follower piston (pos. 10), a level indicator (pos. 11)
and a low level switch (pos. 12). Filling connector (pos. 13) of the lubricant reservoir is
equipped with a filter (pos. 14) and a safety valve (pos. 15).
Pumping unit is equipped with a supporting block (pos. 16).

5
Operation
When pressurization begins, the control starts the pump and opens the line valve. In pres-
sure switch operation the pump stops, when the pressure switch closes and restarts, when
the pressure switch opens. After the set pressurization time, the control stops the pump and
pressure discharges from the line to the lubricant reservoir.
If the lubricant level in the reservoir drops to the low limit level during pumping, the reser-
voir low level switch sends an alarm to the control and pumping is stopped. The alarm can
be disabled by filling the lubricant reservoir and resetting the alarm.
Filling the lubricant reservoir of the pumping unit
Lubricant reservoir of the pumping unit is filled through the filling connector which is
equipped with a filter.
Use of filling device (Safematic code 11600350 or 11600352)
1. Ensure that the surroundings of the pumping unit are clean. Impurities in the system
prevent trouble-free operation and cause damage when reaching the lubrication point.
2. Remove the lid from the lubricant reservoir (1) and press the follower plate (2) tightly to
the reservoir above the lubricant. Follower plate is not used with fluid lubricants, as it
does not remain on the surface.
3. Place the lid (3) on top of the lubricant reservoir. Fasten the lid with wing screws (4) on
the lubricant reservoir.
4. Place the pump (5) through the lid into the follower plate central unit (6).
5. Connect the lubricant hose (7) to the pump.
6. Fill the lubricant hose by pumping by hand.
7. Connect the quick connector (8) to the lubricant hose.
8. Connect the quick connector to the pumping unit filling connector (9).
9. Fill the lubricant reservoir of the pumping unit by pumping slowly by hand.
10. Filling of the lubricant reservoir can be followed at the level indicator (10). To prevent
overfilling, the pumping unit is equipped with a safety valve (11).
11. Turn the pump handle (12) to upright position so that pressure discharges to the lubri-
cant reservoir.
12. Disconnect the quick connector from the pumping unit filling connector.
13. Fasten the protecting cap (13) of the pumping unit filling connector.
14. Fasten the protecting cap (14) of the filling device quick connector.

6
Caution Filter (15) of the filling connector has to be cleaned regularly and replaced if
necessary.

7
Removing air from the pumping unit
Remove air from the pumping unit, if there is air mixed with the lubricant e.g. in connection
with the filling of the lubricant reservoir.
Removing air from the pumping unit:
1. Disconnect the main line connections.
2. Start the pumping unit.
3. Open the pumping element deaerating screw.
4. Pump until only lubricant is coming out of the deaerating screw (no air).
5. Tighten the deaerating screw.
6. Connect the main line connections.
Figure 1. Opening the deaerating screw

8
Technical specification
4 l reservoir 10 l reservoir
Max. output 13 g/min 13 g/min
Reservoir 4 l 10 l
Max. pressure 250 bar / 3626 psi 250 bar / 3626 psi
Operation temperature range -30 °C … +70 °C /
-22 °F … +158 °F
- 30 °C … +70 °C /
-22 °F … +158 °F
Lubrication line connections R 1/4” R 1/4”
Lubricant Up to NLGI 2 Up to NLGI 2
Operating voltage 12/24 VDC 12/24 VDC
Power consumption 150 W 150 W
Protection classification IP65 IP65
Weight, (full reservoir) 16 kg / 44,1 lb 24 kg / 61,7 lb
Height of pump 448 mm / 17,64 ” 688 mm / 27,09”
Width of 230 mm / 9,06 ” 230 mm / 9,06 ”
Depth of pump 235 mm / 9,25 ” 235 mm / 9,25 ”
Material Aluminium Aluminium
Connections
Input
xpressure switch, 2 pcs, closing contact
xor pressure transmitter, 2 pcs, 4–20 mA / 0–250 bar, 2-wire type
Output
xlubricant, 1 or 2 pcs, female thread R 1/4”

9
Symbols
MLP – A – B –C – D –E Abbreviation Description
MLP MLP Multilube-pump
A 4 Lubricant reservoir volume, 4 l
10 Lubricant reservoir volume, 10 l
B 1 Number of lines, 1-line system
2 Number of lines, 2-line system
C 12 Power input 12 V
24 Power input 24 V
D JB-103 User interface, JB-103
IF-103 User interface, IF-103
E PS Pressure control unit, built-in pressure switch
PSE Pressure control unit, built-in pressure sensor
Example:
MLP-4-2-24-JB103-PS
Power in
p
ut, 24 V
User interface, JB-103
Pressure control unit, built-in
p
ressure switch
Number of lines, 2-line s
y
stem
Lubricant reservoir volume, 4 l
MultiLube
p
um
p
Spare parts
See MLP-pumping unit spare parts (drawing no. 361304 in the next page).

11
B-doser groups, Heavy-system
General description
Note Numbers in brackets are part numbers of drawings 461780 in the page 16.
A doser group consists of a mounting rail (pos. 1) and one or several dosers (pos. 2) fas-
tened to it. The mounting rail divides the lubricant to the dosers, which feed the adjusted
amount of lubricant to the lubrication points.
Design
The doser includes a charging valve (pos. 3), a dosing chamber (pos. 4), a dosing piston
(pos. 5) and a spring (pos. 6). B6 doser is equipped with a dosage adjustment screw (pos. 7).
Operation
B-doser
The pressure in the line increases during pressurization and the doser charging valve moves
to its upper position. At the same time lubricant flows past the charging valve and moves the
dosing piston to its upper position. When the dosing piston moves to its upper position, it
pushes the adjusted lubricant dosage from the dosing chamber to the lubrication point.
After pressurization the line pressure decreases and the charging valve moves to its lower
position and closes. The spring returns the dosing piston to its lower position and at the
same time lubricant flows above the dosing piston to the dosing chamber.
The line can be pressurized again when the pressure in the line has decreased and the dos-
ing pistons of the dosers have returned to the lower position.
The unfastening and fastening of dosers
The dosers are unfastened and fastened with a socket wrench.
Caution When changing the dosers, make sure that there is no pressure in the sys-
tem.

12
Adjustments
Adjustments of B6-doser
1. Turn open the pipe connector of the doser’s lubrication piping outlet.
2. Turn open the locking nut in the upper part of the doser.
3. Adjust the dosage by turning the adjustment screw located above the locking nut.
4. Tighten the locking nut in the upper part of the doser.
5. Tighten the pipe connector of doser’s lubrication piping outlet.
Technical specification
Technical specifications
Tabel 1. Technical specifications for dosers
Quantity Range Unit Description
t -25 … +80 °C Operation temperature
pmax 150 bar Max. operation pressure
w x h x d 15 x 90 x 15
17 x 110 x 17
mm B1-B5 doser dimensions,
B6 doser dimensions
Connections
Inlet, mounting rail
xlubricant (1 pc), header piping inlet, pipe connector Ø 8 mm
Outlet, doser
xlubricant (1 pc), lubrication piping outlet, pipe connector Ø 4 mm or Ø 6 mm

13
Symbols
Tabel 2. The symbols of dosers
BX-xxx-Y-Z-U Abbreviation Description
B: B Lubrication system type, B
X: 1 Doser size, size 1
2 Doser size, size 2
3 Doser size, size 3
4 Doser size, size 4
5 Doser size, size 5
6 Doser size, size 6
xxx: R1/8 Fastening of doser to mounting rail R 1/8”
Y: ZN Doser material,
zinc-coated and yellow-passivated steel
Z: 4 Lubricant outlet, pipe connector Ø 4 mm
6 Lubricant outlet, pipe connector Ø 6 mm
Example:
B2-R1/8-ZN-4
Fastenin
g
of doser to mountin
g
rail R 1/8”
Doser material, zinc-coated and
y
ellow-
p
assivated
Lubricant outlet,
p
i
p
e connector Ø 4 mm
Lubrication s
y
stem t
yp
e, B; Doser size, size 2

14
Tabel 3. Doser codes
Doser Code
B1-R1/8-ZN-4 11391000
B2-R1/8-ZN-4 11391050
B3-R1/8-ZN-4 11391100
B4-R1/8-ZN-4 11391150
B5-R1/8-ZN-4 11391200
B6-R1/8-ZN-4 11391250
B1-R1/8-ZN-6 11391300
B2-R1/8-ZN-6 11391350
B3-R1/8-ZN-6 11391400
B4-R1/8-ZN-6 11391450
B5-R1/8-ZN-6 11391500
B6-R1/8-ZN-6 11391255
Tabel 4. Symbols of mounting rails
BPLD-XX-YY Abbreviation Description
BP: BP Mounting rail, Base Plate
LD: LD Lubrication system type, LD
XX: 02 2-place mounting rail
: 0202 4-place mounting rail,
2 places for dosers on opposite sides
0303 6-place mounting rail,
3 places for dosers on opposite sides
04 4-place mounting rail
06 6-place mounting rail
08 8-place mounting rail
0808 16-place mounting rail,
8 places for dosers on opposite sides
YY: ZN Mounting rail material,
zinc-coated and yellow-passivated steel
S Mounting rail material,
stainless steel

15
Example:
BPLD-04-ZN
Mountin
g
rail, Base Plate
Lubrication s
y
stem t
yp
e, LD
Mountin
g
rail size, 4-
p
lace mountin
g
rail
Mountin
g
rail material
,
zinc-coated and
y
ellow-
p
assivated steel
Lubricant inlet,
p
i
p
e connector Ø 8 mm
Tabel 5. Mounting rail codes
Mounting rail type Code
BPLD-0202-ZN 11392310
BPLD-0303-ZN 11392320
BPLD-04-ZN 11392330
BPLD-06-ZN 11392340
BPLD-08-ZN 11392350
BPLD-0808-ZN 11392360
BPLD-02-S 11392400
BPLD-0303-S 11392750
BPLD-04-S 11392500
BPLD-06-S 11392600

17
SMG-dosers, Twinheavy-system
General description
SMG-2 doser feeds the preset amount of lubricant to one to eight (1 – 8) lubrication points.
Design
The doser includes a disk valve (pos. 1) and a dosage cylinder (pos. 3) which is equipped with
sealed piston (pos. 2). The movement of the piston is adjusted with the adjusting screw
(pos. 4).
The doser lubrication outlet connections (pos.5) are equipped with check valves (pos. 6). The
design of the dosers makes it possible to feed small amounts of lubricant from dosers.
Operation
Dosers with two outlets
During normal sequential operation, dosers with two outlets feed lubricant to opposite sides
of the outlet connections.
The pressure in the line 1 increases during pressurization and the disk valve moves to its
extreme position, whereupon the lubricant moves the piston. When the piston moves, it
pushes the lubricant through the check valve to the lubrication pipe or lubrication hose and
further to the lubrication point P1.
When the pumping starts again, the check valve directs the lubricant to line 2, whereupon
the lubricant is directed to the opposite side of the piston. When the piston moves, it pushes
the lubricant through the check valve and further to the lubrication point P2.

18
Dosers with one outlet
The doser with two outlets is modified to doser with one outlet by removing the disk valve
and the lubrication outlet connection and replacing them with blocking plug (pos. 7).
During normal sequential operation, doser with one outlet feeds the lubricant in turns to
lubrication outlet connection and to one of the main lines.
The pressure in the line 1 increases during pressurization and the disk valve moves to its
extreme position, whereupon the lubricant moves the piston. When the piston moves, it
pushes the lubricant to the line 2.
When the pumping starts again, the check valve directs the lubricant to line B, whereupon
the lubricant is directed to the opposite side of the piston. When the piston moves, it pushes
the lubricant through the check valve and further to the lubrication point P3.
The unfastening and fastening of the doser
Caution When changing the dosers, make sure that there is no pressure in the sys-
tem.
Adjustment
General
The lubricant dosage is adjusted by changing the movement of the piston with the adjusting
screw.
Doser adjustments
SMG-dosers are adjusted with an allen screw, which is located inside of a metal cover. The
other end of the allen screw is located in the dosage cylinder, so the adjustment affects di-
rect to the piston.
1. Make sure that there is no pressure in the lines.
2. Remove the metal cover.
3. Turn the allen screw to its closing position.
4. Look at the adjustment graph for the number of adjustment screw turns that corre-
spond to the desired lubrication dosage.
5. Turn the adjustment screw outward as many turns as instructed from the doser body.
6. Replace the cover.