1. Introduction
Dear Customer!
Thank you for purchasing the “HELJAN DCC / Analog Turntable”.
Your new HELJAN Turntable has many features; therefore it is important to carefully read this guide before
installing it on your layout. The turntable is like a small computer, working on very small voltage / impulses,
therefore it is important always to keep the moving components (gears, optical eye etc.) very clean.
HELJAN has produced a turntable that meets all the requirements needed for a modern DCC layout.
If installed and used correctly, this product will give years of service!
2. Before you get started
Your turntable should be powered from its own transformer (not included).
Check the output of the transformer is correct for this use before making any electrical connections.
The ideal voltage to operate the turntable is 15 Vac, 500 mA.
The opening in the wall of the pit houses the optical sensor and is used as the ``zero point´´.
For the indexing to work properly, this area and the small gear teeth and ring rail moulded in the bottom of the
pit, must be clean and open at all times. If you wish to paint or weather the pit further, mask off these areas
before starting. Please note that it´s not possible to make a position directly at the ``zero point´´.
Before installing the pit, cover the centre pivot hole with tape to keep out dust and debris.
Your new turntable must be installed on a flat, stable and level surface. Determine the location for your pit and
use the enclosed template to cut the mounting hole in your baseboard. Allow at least 2¼´´ (5.7 cm) of clearance
below the pit. The zero reader is mounted directly below a mounting boss; be sure to provide clearance in your
baseboard for the reader too.
Pre-drill the positions for the mountings as shown on the template with an 8 mm bit. Secure the pit in place using
eight screws and washers (included) - do not over tighten as this could cause the pit to warp.
If you are using foam / polystyrene for the surface of your layout, open the areas for the mounting bosses slightly
and push the pit into place.
Make sure the pit is level, secure and properly supported before proceeding.
When you remove the bridge from the pit, it´s important that the power is first switched off.
3. Adjustment of tracks
With the pit in place, you can install the approach/exit tracks. The indexing can be programmed for up to 48
different stopping positions, so you can add tracks almost anywhere around the pit – but remember, don’t install
tracks in the ``NO TRACK´´ areas.
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