Wittenstein Alpha LK Series User manual

2022
-
D026817
04
2022-D026817 Revision: 04
LK+/LPK+/LPBK+
Operating Manual

LK+/LPK+/LPBK+
2022-D026817 Revision: 04
Revision history
Revision Date Comment Chapter
01 24.05.07 New version All
01a 11.02.09 WITTENSTEIN Layout All
02 01.08.09 Machinery Directive 1, 2, 3, 4, 6
03 09.03.10 LPBK+All
03a 26.07.10 Technical Data 5.4.1
04 01.09.10 Technical Data 5.4, 9.1
Service
In case you have technical questions,
please contact:
WITTENSTEIN alpha GmbH
Customer Service
Walter-Wittenstein-Straße 1
D-97999 Igersheim
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
© WITTENSTEIN alpha GmbH 2010
This documentation is copyright protected.
WITTENSTEIN alpha GmbH reserves all the rights to photo-mechanical reproduction,
copying, and the distribution by special processes (such as computers, file media, data
networks), even in parts.
Subject to technical and content changes without notice.

LK+/LPK+/LPBK+
Revision: 04 2022-D026817 en-1
Contents
1 Regarding this manual.........................................................................................2
1.1 Signal words ........................................................................................................2
1.2 Safety symbols.....................................................................................................2
1.3 Design of the safety instructions ..........................................................................3
1.4 Information symbols.............................................................................................3
2 Safety.....................................................................................................................4
2.1 EC – Machinery directive .....................................................................................4
2.2 Dangers ...............................................................................................................4
2.3 Personnel.............................................................................................................4
2.4 Intended use ........................................................................................................4
2.5 Reasonably predictable misuse ...........................................................................4
2.6 Guarantee and liability .........................................................................................4
2.7 General safety instructions ..................................................................................5
3 Description of the gearhead................................................................................6
3.1 Overview of the gearhead components ...............................................................6
3.1.1 Overview of the gearhead components LK+/LPK+..........................................6
3.1.2 Overview of the gearhead components LPBK+...............................................6
3.2 Type plate ............................................................................................................7
3.3 Ordering code ......................................................................................................7
3.4 Performance statistics..........................................................................................8
3.5 Weight..................................................................................................................8
3.6 Noise emission.....................................................................................................8
4 Transport and storage.........................................................................................9
4.1 Scope of delivery .................................................................................................9
4.2 Packaging ............................................................................................................9
4.3 Transport..............................................................................................................9
4.4 Storage ................................................................................................................9
5 Assembly ............................................................................................................10
5.1 Preparations.......................................................................................................10
5.2 Mounting the gearhead to a machine (only LPBK+)...........................................11
5.3 Mounting the motor onto the gearhead..............................................................12
5.4 Mounted components on the gear output side...................................................13
5.4.1 Mountings on the output flange (only LPBK+) ...............................................13
5.5 Mounting the gearhead to a machine (only LK+/LPK+).....................................14
6 Startup and operation........................................................................................15
7 Maintenance and disposal.................................................................................16
7.1 Maintenance work..............................................................................................16
7.1.1 Visual inspection ...........................................................................................16
7.1.2 Checking the tightening torques....................................................................16
7.2 Startup after maintenance work .........................................................................16
7.3 Maintenance schedule .......................................................................................16
7.4 Notes on the lubricant used ...............................................................................17
7.5 Disposal .............................................................................................................17
8 Malfunctions.......................................................................................................18
9 Appendix.............................................................................................................19
9.1 Information on mounting onto a motor ...............................................................19
9.2 Information on mounting onto a machine...........................................................19
9.3 Tightening torques for common thread sizes in general mechanics..................20

Regarding this manual LK+/LPK+/LPBK+
en-2 2022-D026817 Revision: 04
1 Regarding this manual
These instructions contain necessary information for the safe operation of the right-angle gearhead
LK+/LPK+/LPBK+, referred to as gearhead in the following.
The operator must make sure that this operating manual is read through by all persons assigned to
install, operate, or maintain the gearhead, and that they understand them.
Store these instructions within reach near the gearhead.
These safety instructions should be shared with colleagues working in the vicinity of the device
to ensure individual safety.
The original instructions were prepared in German; all other language versions are translations of
these instructions.
1.1 Signal words
The following signal words are used to bring your attention to dangers, prohibitions, and important
information:
1.2 Safety symbols
The following safety symbols are used to bring your attention to dangers, prohibitions, and
important information:
This signal word points to an imminent danger that can cause serious
injuries and even death.
This signal word points to a possible danger that can cause serious
injuries and even death.
This signal word points to a possible danger that can cause slight to
serious injuries.
This signal word points to a possible danger that can cause material
damage.
A note without signal word draws your attention to application tips or
especially important information when handling the gearhead.
General danger Hot surface Suspended loads Danger of being pulled
in
Environment
protection
Information

LK+/LPK+/LPBK+Regarding this manual
Revision: 04 2022-D026817 en-3
1.3 Design of the safety instructions
The safety instructions of this operating manual are designed according to the following pattern:
1.4 Information symbols
The following information symbols are used:
zrequires you to carry out an action
Âindicates the results of an action
Lprovides additional information on handling
A= Safety symbol (see Chapter 1.2 "Safety symbols")
B= Signal word (see Chapter 1.1 "Signal words")
C= Type and consequence of the danger
D= Prevention of the danger

Safety LK+/LPK+/LPBK+
en-4 2022-D026817 Revision: 04
2 Safety
These instructions, especially the safety instructions and the rules and regulations valid for the
operating site, must be observed by all persons working with the gearhead.
In addition to the safety specifications mentioned in this operating manual, the general and also the
local regulations on the prevention of accidents (for instance, personal safety equipment) and on
environmental protection should be observed.
2.1 EC – Machinery directive
The gearhead is considered a "machine component" and is therefore not subject to the EC
Machinery Directive 2006/42/EC.
Operation is prohibited within the area of validity of the EC directive until it has been determined
that the machine in which this gearhead is installed corresponds to the regulations within this
directive.
2.2 Dangers
The gearhead has been constructed according to current technological standards and accepted
safety regulations.
To avoid danger to the operator or damage to the machine, the gearhead may be put to use only
for its intended usage (see chapter 2.4 "Intended use") and in a technically flawless and safe state.
zBe informed of the general safety instructions before beginning work. (see Chapter 2.7
"General safety instructions").
2.3 Personnel
Only persons who have read and understood these instructions may carry out work on the
gearhead.
2.4 Intended use
The gearhead serves to convert torques and speeds. It is built for industrial applications that do not
fall under article 2 of the directive 2002/95/EU (usage restriction of certain dangerous materials on
electro and electronic equipment).
The gearhead is specified for installment on motors that:
- correspond to the design B5 (for any divergences, please consult our Customer Service
Department [technical customer service])
- show a radial and axial runout tolerance of at least “N” according to DIN 42955 and
- have a smooth shaft
2.5 Reasonably predictable misuse
Any usage that exceeds the maximum permitted speeds, torques and temperature is considered a
misuse and is therefore prohibited.
2.6 Guarantee and liability
Guarantee and liability claims are excluded for personal injury and material damage in case of
- Ignoring the information on transport and storage
- Improper use (misuse)
- Improper or neglected maintenance and repair
- Improper assembly / disassembly or improper operation
- Operation of the gearhead when safety devices and equipment are defective
- Operation of the gearhead without lubricant
- Operation of a heavily soiled gearhead
- Modifications or reconstructions that have been carried out without the approval of
WITTENSTEIN alpha GmbH

LK+/LPK+/LPBK+Safety
Revision: 04 2022-D026817 en-5
2.7 General safety instructions
Objects flung out by rotating components can cause serious injuries.
zRemove objects and tools from the gearhead before putting it into
operation.
Rotating components on the gearhead can pull in parts of the body
and cause serious injuries and even death.
zKeep a sufficient distance to rotating machinery while the gearhead is
running.
zSecure the machine against restarting and unintentional movements
during assembly maintenance work.
Hot gearhead housing can cause serious burns.
zTouch the gearhead housing only when wearing protective gloves or
after the gearhead has been at standstill for some time.
Loose or overloaded screw connections can damage the gearhead.
zUse a calibrated torque wrench to tighten and check all screw
connections for which a tightening torque has been specified.
Solvents and lubricants can pollute soil and water.
zUse and dispose of cleaning solvents as well as lubricants appropriately.

Description of the gearhead LK+/LPK+/LPBK+
en-6 2022-D026817 Revision: 04
3 Description of the gearhead
The gearhead is a single- or multistage, low-backlash angle gear, which is manufactured as
standard in the "M" version (motor installation). The output shaft bearing is designed to withstand
high overturning torques and axial forces.
Adaptation to various motors is done by an adapter plate and a bushing.
The motor is centered using the clamping hub and not with the adapter plate. A radial distortion of
the motor is avoided.
The optional LPBK+has an output flange instead of an output shaft. You thus have the option of
mounting a toothed belt pulley.
3.1 Overview of the gearhead components
3.1.1 Overview of the gearhead components LK+/LPK+
3.1.2 Overview of the gearhead components LPBK+
Gearhead components LK+/LPK+
A Gearhead housing
B Output shaft
C Adapter plate
Tbl-1: Overview of the gearhead components
Gearhead components LPBK+
A Gearhead housing
B Output flange
C Adapter plate
D Mountable flange
Tbl-2: Overview of the gearhead components
A
B
C
A
B
C
A
B
C
D

LK+/LPK+/LPBK+Description of the gearhead
Revision: 04 2022-D026817 en-7
3.2 Type plate
The type plate is attached to the gearhead housing.
3.3 Ordering code
Designation
A Ordering code (see Chapter 3.3
"Ordering code")
BRatio
C Serial number
D Lubrication information
E Production date
Tbl-3: Type plate (sample values)
The ratio (e.g. i = 10) can also be found on a label on the clamping hub (plug
receptacle). The bushing is properly aligned when the slit points to the label.
WITTENSTEIN alpha GmbH - Walter-Wittenstein-Str.1 - 97999 Igersheim
LPK 090-MO3-100-111
SN: 1234567
DMF: 24/08
Lubrication: For Lifetime
Made in Germany
A
CDB
E
i = 100
10
Gearhead type
LK+/LPK+ 050/070/090/120/155
LPBK+070/090/120
Gearhead variations
M = Motor attachment gearhead
Gearhead model
O = Standard
Number of stages
1 = 1-stage (LK+)
2 = 2-stage (LPK+/LPBK+)
3 = 3-stage (LPK+)
Backlash
1 = Standard
Clamping hub bore hole
diameter
1 = Standard
(See catalogue)
Output shaft shape LK+/LPK+
0 = Smooth shaft
1 = Shaft with key DIN 6885
Form A
Output shape LPBK+
1 = centering on output side
Ratios i
LPK 090 -MO3 -100 -111

Description of the gearhead LK+/LPK+/LPBK+
en-8 2022-D026817 Revision: 04
3.4 Performance statistics
Please refer to our catalogue or our Internet page for the maximum permitted speeds and
torques:http://www.wittenstein-alpha.de
3.5 Weight
You will find the weights of the gearhead with medium-sized adapter plate in Table "Tbl-4". If
another adapter plate is mounted, the actual weight can deviate by up to 10%.
3.6 Noise emission
Depending on the gearhead type and product size, the continuous sound pressure level is between
70 and 78 dB(A).
Please consult our Customer Service department if your gearhead is
older than a year. You will then receive the valid performance data.
Gearhead size LK+050 070 090 120 155
1–stage [kg] 0.7 1.,9 3.2 8.9 18.9
Gearhead size LPK+050 070 090 120 155
2–stage [kg] 1.4 3. 6.9 16.8 34.7
3–stage [kg] 1.6 4.2 7.,9 19.2 38.7
Gearhead size LPBK+—070 090 120 —
2–stage [kg] — 3.4 6.2 15.5 —
Tbl-4: Weight
Contact our Customer Service department if you need information
about your particular product.

LK+/LPK+/LPBK+Transport and storage
Revision: 04 2022-D026817 en-9
4 Transport and storage
4.1 Scope of delivery
zCheck the completeness of the delivery against the delivery note.
LMissing parts or damage must be notified immediately in writing to the carrier, the
insurance, or WITTENSTEIN alpha GmbH.
4.2 Packaging
The gearhead is delivered packed in foil and cardboard boxes.
zDispose of the packaging materials at recycling sites intended for that. Observe the locally
valid regulations for disposals.
4.3 Transport
No special transport mode is prescribed to transport the gearhead.
For specifications on the weights see Chapter 3.5 "Weight".
4.4 Storage
Store the gearhead in horizontal position and dry surroundings at a temperature of 0 °C to +40 °C
in the original packaging. Store the gearhead for a maximum of 2 years.
For storage logistics, we recommend the "first in – first out" method.
Hard knocks, for instance because of falling or hard dropping, can
damage the gearhead.
zUse only hoisting equipment and transportation devices with sufficient
capacity.
zThe permitted lifting weight of a hoist may not be exceeded.
zLower the gearhead slowly.
Suspended loads may fall and cause serious injuries and even death.
zDo not stand under suspended loads.
The plastic lid on the gearhead may come off.
zNever transport the gearhead by the plastic lid.

Assembly LK+/LPK+/LPBK+
en-10 2022-D026817 Revision: 04
5 Assembly
zBe informed of the general safety instructions before beginning work. (see Chapter 2.7
"General safety instructions").
5.1 Preparations
The differences in the assembly sequence of LK+/LPK+and LPBK+are listed in the table "Tbl-5".
LIf you have any questions, please contact our Customer Service department.
zClean/De-grease the following components with a clean and lint-free cloth and grease-
dissolving, non-aggressive detergent:
- All fitting surfaces to neighboring components
- Centering
- The motor shaft
- The inside diameter of the clamping hub
- The bushing inside and out
zCheck the fitting surfaces additionally for damage and impurities.
LK+/LPK+LPBK+
—1
5.2 "Mounting the
gearhead to a
machine (only
LPBK+)"
1
5.3 "Mounting the
motor onto the
gearhead"
2
5.3 "Mounting the
motor onto the
gearhead"
2
5.4 "Mounted
components on the
gear output side"
3
5.4 "Mounted
components on the
gear output side"
3
5.5 "Mounting the
gearhead to a
machine (only LK+/
LPK+)"
—
Tbl-5: Assembly sequence
Pressurized air can damage the gearhead seals.
zDo not use pressurized air to clean the gearhead.

LK+/LPK+/LPBK+Assembly
Revision: 04 2022-D026817 en-11
5.2 Mounting the gearhead to a machine (only LPBK+)
LIf necessary, a spacer (K) may need to be placed between the gear reducer and your machine
to position the gear reducer precisely. Such a spacer is not part of the drive's delivery and
needs to be provided by the customer.
zThoroughly clean the output flange, centering, fitting surface, spacer and toothed belt pulley.
The anti-corrosion agent on the toothed belt pulley must be removed.
LTo remove the Aceton or Loctite 7063 anti-corrosion agent, use a clean, lint-free cloth.
zAlso clean the browned toothed belt pulley with a brush and remove any salt residue between
the flanged wheel and toothed belt wheel.
The fastening screws need to be provided by the customer.
LFor prescribed screw sizes and torques refer to Chapter 9.2 "Information on mounting onto a
machine", table "Tbl-16".
LWhen using hollow profiles (L): Position the toothed belt pulley (I) in the hollow profile before
you attach the gearhead.
zSmear screw-bonding agent (for example Loctite 243) onto the fastening bolts.
zObserve the safety and processing instructions of the cleaning agents
and screw-bonding agents to be used.
C
D
I
K
L

Assembly LK+/LPK+/LPBK+
en-12 2022-D026817 Revision: 04
zFasten the gearhead to the machine with the fastening screws through the through-holes.
LMount the gearhead in such a way that the type plate remains legible, if possible.
LDo not use washers (e.g. plain washers, tooth lock washers).
5.3 Mounting the motor onto the gearhead
zSmear screw-bonding agent (for example Loctite 243) onto the four bolts (E).
zFasten the motor (C) onto the adapter plate (D) with the four screws (E).
zTighten the threaded pin (B) of the clamping hub (A).
LFor bolt sizes and specified torques refer to chapter 9.1 "Information on mounting onto a
motor", table "Tbl-13".
zPress the enclosed stopper plugs up to their stop in the mounting bores of the adapter plate
(D).
zObserve the general information and safety instructions of the motor
manufacturer.
zObserve the safety and processing instructions of the screw-bonding
agents to be used.
zEnsure that the motor is mounted if possible in
a vertical direction.
zIf the motor shaft has a shaft key, remove the
shaft key.
LIf recommended by the motor manufacturer,
apply a half wedge.
zTurn the clamping hub (A) so that the threaded
pin (B) can be reached through the mounting
bores.
zPush the motor shaft into the clamping hub of
the gearhead.
LThe motor shaft should slip in easily. If this is
not the case, the threaded pin needs to be
loosened more.
LThe slit of the bushing has to line up with the
groove (if existing) of the motor shaft and be
turned by 90° to the threaded pin, see
table "Tbl-6".
LNo gap is permitted between motor (C) and
the adapter plate (D).
Designation
A Clamping hub
B Threaded pin
F Bushing
G Smooth shaft
H Keyed shaft
Tbl-6: Arrangement of motor shaft, clamping hub, and bushing
A
B
C
D
E
A
B
F
G
H

LK+/LPK+/LPBK+Assembly
Revision: 04 2022-D026817 en-13
5.4 Mounted components on the gear output side
5.4.1 Mountings on the output flange (only LPBK+)
Distortions during mounting operations can damage the gearhead.
zMount gearwheels and toothed belt pulleys onto the output shaft without
forcing.
zDo not on any account attempt an assembly by force or hammering!
zOnly use suitable tools and equipment for assembly.
zIf you pull on or shrink-fit a gear wheel onto the output shaft, you must
make sure that the maximum permitted static axial forces of the output
bearing (see table "Tbl-7") are not exceeded.
Gearhead size LK+050 070 090 120 155
F2AMAX [N] 100 200 450 750 1000
Gearhead size LPK+050 070 090 120 155
F2AMAX [N] 700 1550 1900 4000 6000
Gearhead size LPBK+—070 090 120 —
F2AMAX [N] — 1550 1900 4000 —
Tbl-7: Maximum permitted static axial forces at static bearing statistic (s0) = 1.8 and radial force (FR) = 0
zObserve the safety and processing instructions of the cleaning agents
and screw-bonding agents to be used.
Only the version LPBK+features an output flange on
which a toothed belt pulley (I) can be mounted with the
bolts.
zThoroughly clean the output flange, centering, fitting
surface, spacer and toothed belt pulley. The anti-
corrosion agent on the toothed belt pulley must be
removed.
LTo remove the Aceton or Loctite 7063 anti-corrosion
agent, use a clean, lint-free cloth.
zAlso clean the browned toothed belt pulley with a brush
and remove any salt residue between the flanged
wheel and toothed belt wheel.
zPlace the toothed belt pulley onto the output flange.
zBrush the screws with a screw-bonding agent (such as
Loctite 243) and tighten the screws by hand initially.
zTighten the fastening bolts (M) and the close-tolerance
bolt (N) (1 piece) in diagonal order making at least two
passes to the required tightening torque (see
table "Tbl-8").
M
N
I

Assembly LK+/LPK+/LPBK+
en-14 2022-D026817 Revision: 04
The tension of the tooth belt is brought about by its construction. The toothed belt's prestressing
force influences the ball bearing life of the gearhead.
zYou can determine the theoretical bearing life for each case using our analysis software
cymex®.
zSet your toothed belt so that there are no lateral starting loads pressing on the toothed belt
pulley.
5.5 Mounting the gearhead to a machine (only LK+/LPK+)
Gearhea
d size
LPBK+
Close-tolerance bolt Fastening bolts
Thread x
Depth
[mm] x [mm]
Tightening torque
[Nm]
Property class 10.9
QuantityxThread
x Depth
[ ] x [mm] x [mm]
Tightening torque
[Nm]
Property class 12.9
070 M5 x 12 7,69 5 x M5 x 12 9
090 M6 x 16 13,2 7 x M6 x 16 15,4
120 M6 x 16 13,2 7 x M8 x 20 37,3
Tbl-8: Fastening the toothed belt pulley
zObserve the safety and processing instructions of the screw-bonding
agents to be used.
zSmear screw-bonding agent (for example
Loctite 243) onto the fastening bolts.
zFasten the gearhead to the machine with the
fastening bolts only through the threaded bores
(M).
LMount the gearhead in such a way that the
type plate remains legible.
LDo not use washers (e.g. plain washers,
tooth lock washers).
LFor specified screw sizes and torques refer
to Chapter 9.2 "Information on mounting onto
a machine", tables "Tbl-14" and "Tbl-15".
M
M
M
M

LK+/LPK+/LPBK+Startup and operation
Revision: 04 2022-D026817 en-15
6 Startup and operation
zBe informed of the general safety instructions before beginning work. (see Chapter 2.7
"General safety instructions").
Improper use can cause damage to the gearhead.
zMake sure that
- the ambient temperature does not drop below –15 °C or exceed +40
°C and
- the operating temperature does not exceed +90 °C.
zAvoid icing, which can damage the seals.
zFor other conditions of use, please consult our Customer Service
Department.
zOnly use the gearhead only up to its maximum limit values, see
Chapter 3.4 "Performance statistics".
zOnly use the gearhead only in a clean, dust-free and dry environment.

Maintenance and disposal LK+/LPK+/LPBK+
en-16 2022-D026817 Revision: 04
7 Maintenance and disposal
zBe informed of the general safety instructions before beginning work. (see Chapter 2.7
"General safety instructions").
7.1 Maintenance work
7.1.1 Visual inspection
zCheck the entire gearhead for exterior damage.
zThe sealings are subject to wear. Therefore also check the gearhead for leakage during each
visual inspection.
LCheck the mounting position, so that no foreign medium (e.g. oil) has collected on the
output shaft.
7.1.2 Checking the tightening torques
zCheck the tightening torque of the fastening bolts on the gearhead housing.
LYou can find the prescribed tightening torques in Chapter 9.2 "Information on mounting
onto a machine", table "Tbl-14", "Tbl-15" and "Tbl-16".
zFor LPBK+gearheads, also check the fastening bolts on the toothed belt pulley.
LYou can find the prescribed tightening torques in Chapter 5.4 "Mounted components on the
gear output side", table "Tbl-8".
zCheck the tightening torque of the threaded pin on the motor mounting.
LYou can find the prescribed tightening torques in chapter 9.1 "Information on mounting
onto a motor", table "Tbl-13".
7.2 Startup after maintenance work
zClean the outside of the gearhead.
zAttach all safety devices.
zDo a trial run before releasing the gearhead again for operation.
7.3 Maintenance schedule
Maintenance work At startup First time after
500 operating
hours or 3
months
Every 3
months Yearly
Visual inspection XXX
Checking the
tightening torques XX X
Tbl-9: Maintenance schedule

LK+/LPK+/LPBK+Maintenance and disposal
Revision: 04 2022-D026817 en-17
7.4 Notes on the lubricant used
You can receive further information on the lubricants directly from the manufacturer:
7.5 Disposal
Consult our Customer Service Department for supplementary information on exchanging the
adapter plate, on disassembly, and on disposal of the gearhead.
zDispose of the gearhead at the recycling sites intended for this purpose.
LObserve the locally valid regulations for disposals.
All gearheads are lubricated for their service life by the manufacturer with a
mineral oil-based lithium soap grease or with a food-safe synthetic grease
(carbon hydride oil, aluminum complex soap) (see type plate). All bearings
are permanently lubricated by the company.
Standard lubricants Lubricantsforthefoodindustry(USDA-H1
registered)
Castrol Industrie GmbH, Mönchengladbach
Tel.: + 49 2161 909-30
www.castrol.com
Klüber Lubrication München KG, Munich
Tel.: + 49 89 7876–0
www.klueber.com
Tbl-10: Lubricant manufacturers

Malfunctions LK+/LPK+/LPBK+
en-18 2022-D026817 Revision: 04
8 Malfunctions
Changedoperationalbehaviorcan bean indicationofexistingdamage
to the gearhead or cause damage to the gearhead.
zDo not put the gearhead back into operation until the cause of the
malfunction has been rectified.
Rectifying of malfunctions may be done by only by especially trained
technicians.
Fault Possible cause Solution
Increased operating
temperature
The gearhead is not suited
for the task.
Check the technical
specifications.
Motor is heating the
gearhead.
Check the wiring of the motor.
Ensure adequate cooling.
Change the motor.
Ambient temperature too
high.
Ensure adequate cooling.
Increased noises during
operation
Distortion in motor mounting Please consult our Customer
Service Department.
Damaged bearings
Damaged gear teeth
Loss of lubricant Lubricant quantity too high Wipe off discharged lubricant
and continue to watch the
gearhead. Lubricant
discharge must stop after a
short time.
Seals not tight Please consult our Customer
Service Department.
Tbl-11: Malfunctions