Hayes derails are made in three basic models for application to the rail. One is the sliding Model HB which requires a separate operating device. Another is the Model EB which is applied directly to the rail by hand. It is a hinged assembly where a guide box is secured to the cross ties and the derailing block portion is hand thrown on and off the rail. The third is the Model LPTS which is a lightweight portable unit which can be carried to a variety of locations for application where rail car movement must be controlled.

Models HB and EB are permanently mounted to the track structure and must be "sized" to the rail at the installation site. The Model LPTS can accomodate a variety of rail sizes.

The proper operation of derails begins with the proper installation of the device. Refer first to the installation instructions provided with each Western-Cullen-Hayes derail. If these are missing or damaged, please write or call for a free additional copy

Installing the derail properly so the derail will function as intended will also enhance ease of operation of the derail. The environment at the installation site must also be given strong consideration. Poorly drained locations that have fouled ballast, poor condition ties or rail that is out of specification from wear will jeopardize the derail function and may create conditions that could be hazardous to the person operating the derails. Operating devices for positioning the HB, throwing the Model EB or carrying the Model LPTS can result in injury where mud, standing water or ice is present. The shoulder of the track should be widened at the location of the operating device for the Model HB to allow the operator to stand on stable terrain.

Models HB and EB when properly installed, the derailing shoe will overhang the rail a minimum of 1/2". On the Model EB this will allow a finger grip for arcing the derail shoe off the rail. If the derail does not lift easily then inspect the installation for binding or frozen conditions. Inspect the derail that all parts are straight and it has not been damaged by prior wheel encounters; the same can be said for Model HB. The derail operator should allow application or removal of the derail from the rail with forces not exceeding 35 lbs.

The operator of the derails should stand with feet spread for proper balance during the operation of the device and be clear of any movement of final position of the device.

The Model LPTS also must have a track structure and rails that are in good servicable condition. The support member that extends down to contact the cross tie must do so without encountering ballast, ice or other obstructions. The rail to which the derail is applied must not have a severely rolled edge at the top of the rail. It must be in tolerance of good relay rail.