Call For Service Today 860.757.3960

Repairs

Our aim is to provide elevator repair services that fit your budget and your time frame without compromising our standard of service excellence. Please inform one of our elevator specialists if you have any specific requests.  You will have a competitive repair quote usually within 24 hours.

Hydro

Hydraulic Cylinder Replacement
Tank Unit/Power Unit Replacement
Main Valve replacement
Oil line leaks
Cylinder packing
Hydraulic pump repair/rebuild/reseal and/or replacement

Traction

Reshackle
Governor repair and/or replacement
Deflector sheave
Bearings on deflector sheave, machine thrust/journal, machine pillow block, etc.
Hoist and governor rope replacement
Brake re-lining

Hydro & Traction

Car Door Equipment Replacement
Signal Fixture replacement
Inspection Violation repairs
Cosmetic Upgrades
Motor replacement
Elevator Door replacement
Clutch repair and/or replacements, upgrades
Hoistway door equipment repair or replacement
Interlock repair or replacement
Freight door repair or replacement
Guide shoe replacements
Cab interiors
Phone (handsets or ADA compliant)
Machine, motor, and generator repair and/or replacement
Car Operating Panel (COP) repair buttons or switches
photo-eye repair or replacement
Starter contactors / Soft Start
Controller
Travel cable replacement

Call our office at 860-757-3960 for any elevator repairs needed.


    Tank Units

    The hydraulic portion of the hydraulic elevator system includes one or more hydraulic cylinders, and electronically controlled valve, an oil reservoir, and one or more positive displacement pumps. This pump design is preferred due to its inherently quiet and smooth operation and high reliability. The pump can be installed beneath the reservoir, driven by an electric motor through a series of belts and pulleys. In either installation configuration, the hydraulic pumping unit of and elevator will deliver years of uninterupted service, requiring only minor, periodic maintenance.

    If your hydraulic elevator pumping unit is showing signs of old age, you may need to replace either part of the unit or the entire unit itself. There are several options, call to find out more.

    Re- Roping of Elevator

    The ropes are attached to the elevator car, and looped around a sheave. A sheave is just a pulley with grooves around the circumference. The sheave grips the hoist ropes, so when you rotate the sheave, the ropes move too.

    The sheave is connected to an electric motor. When the motor turns one way, the sheave raises the elevator; when the motor turns the other way the sheave lowers the elevator. In gearless elevators, the motor rotates the sheaves directly. In geared elevators, the motor turns a gear train that rotates the sheave. Typically, the sheave, the motor, and the control system are all housed in a machine room under the elevator shaft.

    The ropes that lift the car are also connected to a counterweight, which hangs on the other side of the sheave. The counterweight weighs about the same as the car filled to 40 % capacity. In other words, when the car is 40 % full, the counterweight and the car are perfectly balanced. The purpose of the balance is to conserve energy. With equal loads on each side of the sheave, it only takes a little bit of force the balance one way or the other. Basically, the motor only has to overcome friction – the weight on the other side does most of the work. To put it another way, the balance maintains a near constant potential energy level in the system as a whole. Using up the potential energy in the elevator car (letting it descend to the ground) builds up the potential energy in the weight (the weight rises to the top of the shaft). The same thing happens in reverse when the elevator goes up. The system is just like a see-saw that has an equally heavy kid on each end.

    Both the elevator, car, and the counterweight ride on guide rails along the sides of the elevator shaft. The rails keep the car and counterweight from swaying back and forth, and they also work with the safety system to stop the car in an emergency.

    Roped elevators are much more versatile than hydraulic elevators, as well as more efficient. Typically, they also have more safety systems.

     

     

Hartford Elevator, LLC

860-757-3960 (P)

860-757-3982 (F)

1275 Cromwell Ave F-3 Rocky Hill, CT 06067

Admin@hartford-elevator.com