6
NOTE: At this point both sides of the cylinder are under pressure but the opening side pressure is somewhat higher, causing the door to
open. When this pressure is allowed to decrease to the point where the closing pressure is the greater of the two, the door will close.
Adjustment of stopping sensitivity:
Step 5: Deactivate the system. This will allow air to slowly vent at the throttle valve mounted on port # 3 of the opening solenoid valve.
(Closing Speed Adjustment Screw) This air must vent fast enough to allow the door to close, but not so fast as to allow the residual pressure
in the cylinder and lines to drop below the point required to hold open the closing pilot valve (it requires 10 psi). Make adjustments until
the closing door will close at least to the point where the latch touches the strike plate. NOTE: Don’t worry if the door closes but does not
latch; that is the next step.
Adjustment of latching force:
NOTE: For purposes of understanding the operation of the system, assume the following conditions are true:
•
When held open, the pressure supplied to the opening side is 31 psi.
•
When open, the pressure supplied to the closing side is 20 psi.
•
The differential of 11 psi is being used to open and hold open the door
The closing air pilot valve will remain open, supplying 20 psi, as long as the air pressure being exerted in the opening side remains above 10
psi. When the system is deactivated, air is permitted to vent at a controlled rate and slowly lowers the pressure on the opening side. The
door will close as the 20 psi closing pressure becomes larger than the diminishing pressure on the opening side. The closing motion of the
door itself continually supplies more air to vent, holding the pilot valve open. If the closing motion of the door is stopped, for any reason,
including latching, the supply of air that is being vented will be cut off and the pressure on the opening side will drop. When this pressure
drops below 10 psi, the pilot valve will close and the entire system will be deactivated. At this point, the maximum closing pressure being
supplied is 10 psi; the 20 psi closing pressure minus the 10 psi being used to hold open the pilot valve.
To increase the latching force, increase the pressure on both the opening and closing regulators about ¼ turn. Repeat step 5 if necessary.
NOTE: In this new model, the opening pressure has been increased 5 psi to 36 psi and the closing pressure has also been increased 5 psi to
25 psi. Notice that we have the same differential of 11 psi needed to open the door. At the point where the door stops, the latching force,
this differential is now 15 psi; the 25 psi closing pressure minus the same 10 psi required to operate the closing pilot valve.
CAUTION: Do not increase the latching force any more than necessary. This action also increases the force that will be required to stop a
moving door if an object or person is encountered.
Adjustment of opening speed:
Opening or closing of the throttle valve connected to Opening Cylinder Regulator will speed up or slow down the opening speed. This will
have no effect on the previous adjustments.
Adjustment of the closing speed:
Slightly opening the (Closing Speed Adjustment Screw) mounted into port 3 of the solenoid valve will permit air to escape more quickly,
thereby permitting the door to close faster. Obviously, do not allow air to escape too quickly as the 10 psi closing pressure must be
maintained.
To depend on the speed of a closing door, or momentum, to accomplish the latching is crude and dangerous. It does not take advantage of the
elegance of this system. The goal is to get the entire system to operate perfectly using the lowest possible differential pressure settings.
LEAK CHECK:
After the tubing is connected and the system is operational, check all of the fittings for leaks. Dilute bubble soap or dish washing soap will
immediately show any leaks in an activated system by "blowing bubbles". Tighten any fittings that leak and push in hard on any tubing
connections that leak. A leak free system will minimize the amount of time the compressor needs to run, prolonging the life of the motor.
MAINTENANCE:
The wireless remote does require fresh batteries to maintain maximum range. If after a period of time the door fails to close completely, coat
the strike plate and latch with a water resistant lubricant such as Vaseline or car wax. Friction points such as the hinges and clevis should
receive a drop of machine oil about once a year. This system may be used to hold the door open for moderate periods of time without
incurring any problems. As electricity is being used while the door is open it is not recommend that this device be used to hold doors open
for long periods.
Thank you for purchasing the “Easy Gentleman Door” Operator!
