Hoistway & Machine Room Parts
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Hoistway & Machine Room Parts
The LS-1B Elevator Limit Switch is designed primarily for use in elevator hoistways as Access, Slow Down, Normal, and Final Limits. The light weight durable construction of the LS-1B switch results in a reduced noise level and is designed for extended reliability.
Mounted directly onto the main jack connection, the Pipe Rupture Valve (PRV) is simple to adjust and extremely reliable in operation. Should an overspeed of the elevator occur, the damped closing of the PRV ensures a quick but smooth slowdown of the car. Slowing to a stop is standard; slowing to a down creep speed is optional.
Grooved or NPT straight through line connections enable the customer to attach the PRV to the existing cylinder and pressure line connections in the shortest possible installation time.
The Muffler (MU) provides superior noise suppression for most standard
power unit installations. The unit working pressure is 1200 psi and it is 11-3/4” long.
Unit diameter for 2” size is 6-5/8” and 8-5/8” for other sizes.
The EECO Hydraulic Dampener (EHDN) is extremely effective in suppressing the sound and pulsation present in hydraulic elevator systems. The EHDN has a minimum burst pressure of 6000 psi with an ASME A17.1/CSA B44 allowable working pressure of 1200 psi. Unit diameter is 8-5/8” and the length for 2", 2.5", and 3" is 11.75". The 4" outlet unit has a diameter of 10.75" and a length of 13.75".
A thermostat that is field adjustable by a fine adjustment trim screw which can activate a viscosity
control system. The thrermostat is UL and CSA recognized for a maximum of 1500 watts at 230 volts AC
with a single contact. The unit has a heat sensitive base plate which can be mounted directly to the
outside of a hydraulic tank or by an aluminum “L” bracket with little loss of sensitivity.
This switch can be used to control pump/motor running in bypass mode to heat up the oil in lieu of
a tank heater or as a control to turn on/off an oil cooler and/or a tank heater. The switch is normally
closed and is open above the set temperature.
Specifications:
Range: Adjustable from 75ºF (off) to 525ºF
Rotation: 310 Angular Degrees
Terminal Connector: #6-32 Screw
The EECO Transfer valve allows the transfer of hydraulic oil between chambers in multi-stage jacks equalizing the hydraulic pressure during the resynchronization procedure.