LGB 20670 Instructions De Service page 7

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cleaning wheels). If the rings are
worn to the level of the outer wheel
disks, the disks can damage the
track.
Attention! Do not run the 20670
unattended. If it derails, the cleaning
wheels may continue to rotate and
damage the track.
The loco features a "Back-EMF"
function, which works both with ana-
log control and with the Multi-Train
System. This keeps the motor speed
constant (and under normal condi-
tions the loco speed), even when the
load of the loco changes, for exam-
ple, in curves or on grades. Thanks
to this feature, the tracks will be
cleaned uniformly, independent of
grades or curves.
Hints:
This feature does not work at top
speed (speed control on the roof
turned up all the way, or highest
speed step selected with MTS),
because additional voltage must be
available to overcome any added
load.
Power Supply
Attention! For safety and reliability,
operate this model with LGB power
supplies (transformers, power packs
and controls) only. The use of non-
LGB power supplies will void your
warranty.
Use this model with LGB power sup-
plies with an output of more than 2
amps. For more information on LGB
power supplies for indoor, outdoor
and multi-train operation, see the
LGB catalog.
Attention! When cleaning the tracks,
carbon dust and other debris accu-
mulates around the track. This dust
and debris can stain carpet and other
materials. Consider this before oper-
14
ating your cleaning loco. Ernst Paul
Lehmann Patentwerk and LGB of
America are not liable for any dam-
ages.
SERVICE
Do-It-Yourself Service Levels
Level
- Beginner
Level
- Intermediate
Level
- Advanced
Attention! Improper service will void
your warranty. For quality service,
contact your authorized retailer or an
LGB factory service station (see
Authorized Service).
Hint: Additional expert instructions
for many LGB products are available
at www.lgb.com.
Lubrication
The axle bearings should be lubricat-
ed occasionally with a small amount
of LGB Maintenance Oil (50019).
Cleaning
This model can be cleaned externally
using a mild detergent and gentle
stream of water. Do not immerse this
model.
Replacing the light bulbs
Lanterns: Pull the lantern housing
away from the model. Remove and
replace the bulb. Reassemble.
Flashing lights: Pull the light dome
away from the model. Remove and
replace the bulb. Reassemble.
Cab light: Hook your finger into the
open cab window and gently pull
outward while lifting the roof.
Remove the roof. Remove and
replace the bulb.
Replacing the cleaning wheels
Track Cleaning Wheels (67267) are
available from authorized LGB retail-
ers. The package includes cleaning
rings, inner wheel flanges and outer
wheel discs. Always replace the
flanges and disks together with the
cleaning rings.
To replace the cleaning wheels (Fig.
4):
- Remove chassis bracket (1) by
removing two screws.
- Lift the rear of the motor block
slightly (2) and slide the block
backwards (3) to release the motor
block pins.
- Lift the block out of the chassis just
far enough to reach the axle
screws.
- Unscrew the axle screws in the cen-
ter of the cleaning wheels.
- Remove the inner wheel flanges,
the cleaning rings and the outer
wheel disks.
- Install new flanges, rings and disks.
- Reassemble.
Maintenance parts
50010 Smoke and Cleaning Fluid
50019 Maintenance Oil
51020 Gear Lubricant
62201 Standard Motor with Short
Shaft
63120 Brushes, Assembled,
14mm and 16 mm,
8 pieces
63218 Standard Pick-Up Shoes,
2 pieces
67267 Track Cleaning Wheels
68511 Plug-In Bulb, Clear, 5 V,
10 pieces
INSTRUCTIONS FOR ADVANCED
USERS
MTS Onboard Decoder
Programming functions
You can program numerous func-
tions of the onboard decoder to suit
your requirements. If you want to do
this, program the "function values"
in "registers" (CVs) using a PC and
the
55045
MTS
PC
Decoder
Programming Module. You can also
program the function values using a
55015 Universal Remote.
Hints:
- For normal operation, it is not nec-
essary to change the function val-
ues.
- If programming results in unsatis-
factory operation, you can repro-
gram the factory pre-set values of
most important CVs: Program reg-
ister CV55 to function value 55.
This also reprograms the loco
address to the factory pre-set
value.
To reprogram the factory pre-set
function values with the 55015 (dis-
plays shows "P --") input 6, 5, and 5
and press the right arrow button. The
display shows "P --" again: Input 5,
5, and 5 and press the right arrow
button again.
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