PHI D-4990, Manual, Page: 46 / 66

ELECTRONIC ADJUSTMENT PROCEDURES:
• If the door fails to reach the 90
0
open position, adjust potentiometer # 2 and
retest the operation
– Repeat this procedure until the correct angle is attained
• If the door fails to stay in the fully open position for at least 5 seconds,
adjust potentiometer # 1 and retest the operation
– Repeat this procedure until the door stays open for at least 5 seconds
(required by ANSI A156.19)
• If the door drifts closed when in the hold-open position, adjust potentiometer
# 4 and retest the operation
– The operator should be adjusted so that the door is just beyond drifting
shut ( the unit can be damaged if too much stall force is used ).
– Repeat this procedure until the door no longer drifts
• NOTE: The test switch will cause the door to operate when the function
switch is in day or night mode
SETUP & ADJUSTMENT PROCEDURES