DAPOL Class 21 User Manual

Class 21 and 29 – User Guide
Maintenance, Lighting and DCC installation
The Class 21 and 29 models model feature independent lighting function allowing separate control
of Number 1 and number 2 end white / red lamps and also cab lights. Please note that unlike
modern locomotives, prototypical lighting operation (depending on locomotive class) consists of
(class 21) red lamps and white lamps, or (class 29) red lamps and headcode illumination. Both
models lighting is directionally dependant.
This information sheet describes the operation for DC & DCC operation.
DC operation:
The factory setting is for traditional front and rear lights which operate directionally. i.e. White and
red lamps change colour when the loco reverses direction. The cab lights operate directionally and
are on at the same end as the front white lamps (or illuminated headcode). Using the two switches
located on the underside the cab light at either end can be switched off. A further two switches are
provided which will switch off entirely the lighting at No. 1 and/or No. 2 ends. Each switch function is
indicated by a moulded caption.
DCC Operation:
If you are installing your own decoder please note the information in the 'Installing your own
decoder' section below.
Factory fitted DCC:
Please note that these instructions are only relevant to locomotives supplied as 'factory fitted DCC'
The loco address is 3. Lighting is arranged so that either 'Light engine' or Push/pull mode can be
chosen. Factory fitted DCC versions are pre-programmed to operate the lighting prototypically.
If you perform a factory reset, please reset the CVs listed in the 'Decoder setup' section below.
DCC Functions (Factory fitted DCC):
F0 – Light engine mode, Front and rear lights illuminate appropriately in the direction of travel
F1 – Hauling mode (No. 2 end facing train) No. 1 end lamps only illuminate (White forwards, red
reverse) No. 2 end lamps are off.
F2 – Hauling mode (No. 1 end facing train) No. 2 end lamps only illuminate (White forwards, red
reverse) No. 1 end lamps are off.
F3 – No. 1 end cab light control. ON/OFF for the cab light, this is not directional. N.B. some
controllers may only allow operation of F2 as a momentary switch, in this case the decoder will need
to be re-mapped to move the cab control to a different function.
F4 – No. 2 end cab light control. ON/OFF for the cab light, not directional.
Installing your own decoder (Inclusive of Dapol 'Imperium' decoders which are not factory fitted):
Firstly, remove the DC blanking plate (the small PCB with switches fitted) and install the DCC decoder
of your choice. For full operation, we recommend a 6-function decoder (i.e. Dapol Imperium 21 pin,
imperium.dccsupplies.com part number 113187) Please refer to the table below for function
operation with other types of decoder.
Decoder Setup (Inclusive of Dapol 'Imperium' decoders which are not factory fitted):
No changes are required for the factory fitted version, but if you perform a decoder reset or install
your own decoder, then you will need to configure the CVs (please refer to your controller handbook
to regain correct operation. If you are installing an NMRA compatible 6 function decoder of your
Class 21-29 OO user guide V1.0