Impulse DO4837R User Manual
Page 13

13
R
888 Porter Rd. Muskegon, MI 49441 Phone: 231.798.8888 Fax: 231.798.4960 www.structuralconcepts.com
MAINTENANCE FUNDAMENTALS, CONTINUED
Removing the Rear Doors
•
Remove Thumbscrews (4 each side). 
Thumbscrew removal will allow Rear 
Doors to be removed. 
•
See illustration on this page for locations 
of Thumbscrews, Nuts, Perforated 
Acrylic Plenum, etc. 
•
Move the doors toward the center of the 
case. 
•
Starting with the Outer Door (right hand 
door from rear of the case), individually 
lift each door up toward top of the case 
and pivot the bottom of door out. 
•
Rear Doors (both Outer and Inner) must 
be replaced in the same manner in which 
they are removed. 
 
Removing Perforated Acrylic Plenum 
•
After Outer and Inner Doors are re-
moved, the Perforated Acrylic Plenum 
pieces can now be removed. 
•
Slide the Plenum toward the center of 
the case. 
•
Starting with the right hand Plenum, lift 
up toward the top of the case and pivot 
the bottom Plenum out. 
•
Perforated Acrylic Plenum pieces must 
be replaced in the same manner in which 
they are removed. 
 
 
View of thumbscrew
(4 each side) to be removed.
Shelving
Bracket
View of Thumbscrew 
and Nut from Case 
Rear. Note: Thumb-
screws are only acces-
sible from front of case. 
View of Rear
Outer Door
Additional view of
Thumbscrew and Nut
from Case Rear.
View of Perforated
Acrylic Plenum
Thumbscrew
Upright
Shelving
Lamp
