Besam Swingmaster® 900 Series Low Energy Power Operator Meets Hospital's Requirements

The non-handed Besam Swingmaster 900 Series power operator can be used for automatic and low energy pedestrian applications. A rack and pinion spring mechanism provides sufficient power to close the door even in normal wind conditions, at the same time complying with codes and standards. These power operators can accommodate up to 350 lb doors in a surface mounted installation.

When a Swingmaster is installed with the required motion and presence sensors, it meets or exceeds minimum requirements for ANSI A156.10 Standard – Power Operated Pedestrian Doors. The Swingmaster 900 can be configured to comply with ANSI A156.19 Standard – Power Assist and Low Energy Operated Doors and the ADA.

The Swingmaster 900 can be adjusted to compensate for wind and stack pressure. The units are adjustable to comply with low manual push forces outlined in ANSI A156.19. For this installation, the power operators were adjusted to the low energy application.

In addition to the two Swingmaster 900 power operators, a Bodyguard III, two SuperScans, CUHub with the three position Doorswitch, BEA MC-25 Time Delay and BEA MS-08 Magic Switches were be installed. The MC-25 provides the time delay necessary for the electric latch retraction to retract the exit devices’ rails, permitting the doors to be opened by the power operators. The MC-25 can be set for a one-half second or one and one-half second delay. For this installation, a one-half second delay is sufficient to retract the rails unlocking the door before the power operator pushes the doors open. The MC-25 supply voltage is 15 to 24 VAC/VDC @ -5 to +10 percent.

A custom full width, aluminum housing was provided to conceal the two operators and the common electronics. The new housing has a front load cover.

Before installation, the first step is to test the electric latch retraction, the sensors, push plates, etc., making sure the system did not have wiring problems. The doors were manually opened and closed, checking for construction problems.

Then remove power from the door operators and components as a precaution since the housing is metallic and aluminum conducts electricity.

Remove the arms from the door operators and the doors.

Remove the Phillips Head screws from the two bottom panels in the housing. Remove the bottom panels.

Identify, mark and disconnect the wiring to the electric latch retraction, Bodyguard, SuperScans, push plates, and the power.

Remove the two door operators.

Measure the locations of the mounting screws as each screw was firmly mounted into the wall. Write the height of the holes onto the header from the top of the doorframe header. The new housing will be drilled in the same locations.

Remove the housing. Behind the housing were two pieces of drywall that extended the mounting surface flush with the doorframe header. Between the drywall pieces were three pieces of flexible metal conduit through which the wiring was run.

Drill the new aluminum housing for mounting and wiring holes. After the three holes for the flex and two of the mounting screw holes are drilled, place the housing in position. Install the two screws. Drill the remaining mounting holes and add extra mounting screws to ensure the operator is firmly attached.

Important: When installing a large housing, be sure to drill holes along the upper portion of the housing as well as the middle and lower portions. This will reduce the possibility of tweaking the housing as long as the housing is mounted onto a flat surface.

NOTE: Electronic circuitry is susceptible to ElectroStatic Discharge (ESD). Before handling any circuit boards, ground yourself to dissipate any built-up charge.

The power operator components to be installed are two Swingmaster 900 units using Push Arms, the CUHub, the CU2 Control master and the CU2 Control slave. Each operator requires a CU2 control unit to swing the doors to the back check (open) and the closed positions, when both the CU2 controls are connected via a sync cable that allows the doors to operate simultaneously. Then whichever CU2 the CUHub is plugged into becomes the master and the other CU2 becomes the slave. The opening and closing speeds and balance force are adjusted separately for the master and slave. The push plates are wired into the MC-25 relay to sequence the activation of the rails before the activation of the door operator. The MC25, the On/Off/Hold Doorswitch, the Master CU2 Control, the Bodyguard III and the SuperScan presence detectors are wired into the CUHub.