To Replace The Controller - Barnstead 47900 Operation Manual

48
M
and close the door; the cycle light
should turn OFF when the door is
opened approximately 3" and turn
back ON 1" to 2" before the door is
closed.

To Replace the Controller

The controller plugs into a panel mounting
sleeve which should be left permanently
installed in the furnace housing. To remove
the controller, release the side clips and slide
the controller out. Do not attempt to dismantle
this unit further; replace it with a Thermolyne
loaner or a new unit.
S
AINTENANCE AND ERVICING