Whilst this is a photo copy, and some of the pages are a little askew, it was all readable and intact. A real bonus finding an old manual for a classic piece of kit that no other site had.
It was easy done, and I got exactly what I was looking for.
Text excerpt from page 14 (click to view)
THE GRILL PAN AND HANDLE
The grill pan has a removable handle. To insert the handle, press the button on the handle with the thumb and pivot the handle slightly upwards inserting the lip into widest part of the bracket. Move the handle towards the left, lower into position and release the button. Ensure the handle is positively located. To remove the handle, press the button on the handle with the thumb and pivot the handle slightly upwards and towards the right to remove from the bracket. Protect your hands when removing the grill pan handle. Always remove the grill pan handle during grilling. To correctly locate the grill pan on the shelf, ensure that the cut out on the underside of the handle bracket locates over the front bar of the shelf. The Grill Pan must not be located in the shelf runners. To check the progress of the food being grilled, the grill pan should be withdrawn on the shelf to attend to food during cooking. Ensure that the grill pan is supported when it is withdrawn.
HINTS AND TIPS Most foods should be placed on the grilling grid in the grill pan. This allows maximum circulation of air by raising the food out of fats and juices.
Adjust the grid and grill pan runner position to allow for different thicknesses of food. Position the food close to the element for faster cooking and further away for more gentle cooking.