ED I nst r uct i ons, Page 4
material as desired). If you wish to shorten the wires, feel free to do so. If you wish to
splice on additional wire, use #14 or #12 wire.
The wires feed into the Power Supply, where they connect to the terminals providing the
TOP "switched" power.
Operation.
Operate the toggle switch to run the dome in either direction. Check that the motors turn
in the same direction (reverse wiring if they don’t). You will notice that as the dome
rotates, the drive plates will move up and down, and pivot (rotate) as they follow the
underside of the DSR. If you want to assist the dome in turning at any time, that is
perfectly OK.
Caution: if the drive rollers are skidding on the traction material, do not operate until the
problem is resolved (otherwise the roller surface or the drive belt will be worn down).
Problem Solving.
* One motor turns one way, and the other opposite. The result will be lots of noise and
no action! Reverse the wires on one of the motors.
* One Drive Unit Skids. In this case, the rollers rotate, but the dome does not move.
Check that the rollers are in up contact with the DSR. You may find that the drive roller
hole is not large enough, or some edge of the base ring flange is projecting into the way of
the plate, so that it cannot move up and down freely. Also check that the pivot bearing
slides freely in the drive plate slot.
* Both Drive Units Skid. The probable cause is that the dome is too hard to turn. With
the drive units not in operation (i.e., retracted), you should be able to turn the dome
without major effort. If you cannot, find and correct the problem, so as to gain better
operation.
* Belt Slippage. You may find that under heavy loads a motor may turn, but the cog belt
slips on the motor drive gear. You will hear this as a heavy vibration and buzzing from
the motor. This may arise from improper belt tension, or from a defect in the drive unit.
If this occurs, inspect the drive plate carefully. In general, the belt should be under
substantial tension (push down about 1/8 inch between the rollers). The idler arms should
both be in contact with the belt, and their spring should be stretched approximately 1/4
inch. You should easily be able to move the idler arms (both at once) side to side.
Looking beneath the motor bracket, check that the drive gear is properly attached to the
motor drive plate. If you cannot find and correct the problem, please call us for
assistance.
