, Control boxes, hosts, prosecution and maintenance of the pit:
1. work, please cut off the power supply (except when the check operation of motor and host).
2. the control box known checks and maintenance:
(1) clean the control box all the parts, check all fixing screws are loose.
(2) check the cable, thread and wiring (including ground line).
(3) measurement input power supply is three-phase equilibria, DC control circuit voltage is normal,
Three measured by meters.
(4) check the control box components: contactors, relays, rectifiers, transformers, resistors,
Capacitors, coils and so on without overheating, bad or damaged.
(5) check the line of the insulation is good, with high resistance measurement.
(6) check the components of the lift control box action and received and cases.
(Heat, spark, different sound).
(7) check for proper fuse capacity.
3. host (check with the motor), maintenance:
(1) check the motor insulation is good, with high resistance meter.
(2) check that the brakes are clean, smooth, and free of oil (brake drum not come on).
(3) check for correct brake shoe clearance on either side, brake linkage wear?
(4) inspection of the coupling bolts and the shaft key is set.
(5) check whether the bolts tight.
(6) check the operation conditions (vibrations, abnormal noise, temperature).
(7) check the motor operation current, current hooked instrument, at rated load,
Its current value is not more than 1.1 times times the rated values on the name plate and three-phase must be balanced.
(8) check the wear on the grooves of the drive cable wheel, automatically stopping between the wheel and the main cable shall not be
Have a significant slip.
(9) need attention should never be in the cable pulley Groove and wire oiled.
4. inspection, maintenance
(1) staff cars rose to more than 2F, opens the order under doors, personnel
Down to the pit.
(2) the first pit switch to the off position, dimension security and install lights.
(3) cleaning pits, such as water, should be screened, extraneous objects out of elevator equipment.
(4) check that the buffer is fixed properly.
(5) check that the speed control cables hanging round is fixed well grooves wear, rotate,
Is there a strange sound.
(6) check the end of carriage bolt is loose, the cars lower sliding guide is fixed properly,
Whether the loss.
(7) check the safety rail clamping device is properly fixed Rod action is effective,
Safety switch is fixed properly and the action does.
(8) inspection activities at the end of car cable fixed wheel fixing appropriate for damage.
(9) to check whether the relationship between the mechanical corrosion, if any, needs cleaning and touch up.
(10) after the work is completed, remove the lamp, switch to the path location,
And along the Rails to the lathe.
5. checks and maintenance of the automatic level adjustment device implantation:
(1) check the motor insulation is good, with high resistance meter.
(2) check whether the bolts tight.
(3) check the operation conditions (vibrations, abnormal noise, temperature).
(4) check the motor operation current, ammeter measurement, its current value is not more than
The ratings on the name plate.