ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618
Location: assembly/manuals Series 92 A/C Modulating Svc Manual Gen II Rev. A 11/15/19
Page 8 of 26
Operation
Manual Override Operation
Reference Drawing #289S92
Models S-92, A92, & B92
Pull up the declutching knob (Part #18) and apply a 5/8" open end wrench to
exposed flats and rotate within labeled limits as indicated by arrows.
To re-engage simply rotate actuator shaft in the opposite direction until
declutching knob drops back down into position.
Model C92
Push down on hand wheel (Part #18A) and rotate within labeled limits.
To re-engage simply rotate actuator hand wheel until it moves up and re-
engages.
CAUTION: The manual override should only be used when there is no power
applied to actuator. When power is restored the actuator will automatically
resume normal operation.
Setting Limit Switches
Reference Drawing #289S92
Disconnect power!
Open Travel Limit Switch (Top Switch Part #25):
Using declutchable manual override, move the valve approximately 2 degrees
beyond the full open position. Then loosen set screws on top cam (Part #40) and
rotate cam (CCW) into limit switch arm until a click is heard, this designates the
switch circuit has opened and defines a full open position. Tighten 2 set screws
(Part #40) on cam.
Close Travel Limit Switch (Bottom Switch Part #25):
Using declutchable manual override, move the valve approximately 2 degrees
beyond the full closed position, loosen set screws on bottom cam (Part #40) and
rotate cam (CW) into limit switch arm until a click is heard, this designates the
switch circuit has opened and defines a full closed position. Tighten 2 set screws
(Part #40) on cam.
Manually position valve to midstroke. Reapply power to actuator and drive to
open or closed position. Actuator motor will run. The shaft will not turn until drive
pins (Part #7) reseat in drive gear. This could take up to 25 seconds.
CAUTION: The limit switches inside of the unit are for loss of signal conditions;
NOT for normal operation of the modulating actuator.
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