Overspeed governors (113 OG Моment 250 MR, 114 OG Moment 250 A3, 115 OG Moment 250 MRL, 119 OG Moment 250 MRL/1) Instructions for installation and operation
113 OG Моment 250 MR 115 OG Moment 250 MRL Overspeed governor Overspeed governor for MR elevators for MRL elevators 114 OG Moment 250 A3 119 OG Moment 250 MRL/1 Overspeed governor Overspeed governor for MR elevator with А3 system for MRL elevator with installation on the rail guide 2
113 OG Моment 250 MR Overspeed governor with bi-directional action for MR elevators The overspeed governor is designed for operation with rope diameter of 6 mm. The maximum force generated on the overspeed governor rope 300N. The overspeed governor is configured at the factory for the speed of the Elevator required by the customer (from 0,4 m/s till 2,5 m/s), and is sealed after that. 3
115 OG Moment 250 MRL Overspeed governor with bi-directional action for MRL elevators The overspeed governor is designed for operation with rope diameter of 6 mm. The maximum force generated on the overspeed governor rope 300N. The overspeed governor is configured at the factory for the speed of the Elevator required by the customer (from 0,4 m/s till 2,5 m/s), and is sealed after that. 4
114 OG Moment 250 A3 Overspeed governor with bi-directional action with the А3 system for MR elevators The overspeed governor is designed for operation with rope diameter of 6 mm. The maximum force generated on the overspeed governor rope 300N. 5
The overspeed governor is configured at the factory for the speed of the Elevator required by the customer (from 0,4 m/s till 2,5 m/s), and is sealed after that. 119 OG Moment 250 MRL/1 Overspeed governor with bi-directional action for MRL elevators with installation on the rail guide The overspeed governor is designed for operation with rope diameter of 6 mm. The maximum force generated on the overspeed governor rope 300N. The overspeed governor is configured at the factory for the speed of the Elevator required by the customer (from 0,4 m/s till 2,5 m/s), and is sealed after that. 6
1. Description and principle of operation The overspeed governor is the safety device of elevator, and it is designed for the safety gear activation. When the elevator cabin (counterweight) while moving up or down exceed the permissible rated speed until the maximum speed of the overspeed governor activation, the overspeed governor switches on and through the rope activates the safety gear. The overspeed governora 115 OG Moment 250 MRL, 119 OG Moment 250 MRL/1, 113 OG Моment 250 MR, 114 OG Moment 250 A3 have the same principle of operation, they have the same mechanical part, and they differ only in the way of control: by hand or remote. These overspeed governors are the OG of inertial type. The OG consists of: Base pos.1, axle with bearings pos.2, the main sheave pos.3, rocking device pos.4, springs pos.5, slab board pos.6, springs speed settings pos.7, small sheave Ø120mm pos.8, hook pos.9, locking plate pos.10, element for centering of locking plate pos.11, casing pos.12, switch pos.13, the locking mechanism pos.14. On the base pos.1 is fixed the sheave pos. 3 through the axis pos.2. On the sheave pos.3 through the axle on each side are fixed the hooks pos. 9. The springs pos.7 are fixed to the hooks pos.9, tension of which leads to regulation of speed, at which the overspeed governor activates. The setting of the springs is held at the factory, then they are closed with the plates pos.6 and sealed. Also, on the sheave pos.3 the rocking device pos.4 is fixed. On the back side of the sheave pos.6 is fixed the small sheave pos.8, which is designed for testing the overspeed governor at its rated speed. The diameter of small pulley is 120 mm. 7
The overspeed governor activates through the rope, which passes through the sheave. When the rated speed of elevator excesses the sheave of overspeed governor pos.3 spins faster. In this case the hooks pos.9, due to the centripetal force are deflected to the edges, overcoming the spring tension pos.7. At achievement the maximum speed of operation, the hooks diverge so, that ledges clinging to the locking plate pos.10, located at the base pos.1. The locking plate pos.10 has the possibility to rotate at a certain angle to a full stop on the grooves on the base pos.1. At the moment of rotation, the locking plate presses on the switch pos.13, which breaks the safety chain until the sheave will be locked pos.3. Tin order to test the traction abilities of the groove of the main sheave it is necessary to press on the locking mechanism pos.14. This mechanism will block the rocking device pos.4, which in turn will block the sheave pos.3. When the force will be removed from the mechanism pos.14 the spring will return it to its original position. Features of overspeed governors for MRL elevators The difference of models: 115 OG Moment 250 MRL, 119 OG Moment 250 MRL/1 from 113 OG Моment 250 MR is that instead of hand locking mechanism pos.14 in this variant the electromagnet is used, which pushes stock and is controlled remotely. Also on the switch pos.13 one more electromagnet is fixed pos.15, which effects on the roller switch pos.13, returning it to its original position. Features of overspeed governors with A3 system The difference of the model 114 OC Moment 250 A3 from 113 ОС Моment 250 MR is that it is additionally equipped with an electromagnet pos.16. While the cabin is moving on the electromagnet pos.16 the voltage is served and the stock is in pulled position. At any stop of the Elevator cabin from the electromagnet pos.16 tension is released and the spring pushes the stock, which blocks the sheave pos.3 of the overspeed governor. The stock position is controlled by the switch pos.17. 2. The overspeed governor installation 8
The overspeed governor should be installed in accordance with the requirements of Assembly drawing. The installation work is allowed only trained in this area staff. Before the installation it is necessary to make sure that the overspeed governors meets the required source data: the speed, the rope diameter. It is necessary also to make sure that there are no visible defects. 2.1 The installation of overspeed governors: 113 OG Моment 250 MR 115 OG Moment 250 MRL 114 OG Moment 250 A3 1. To set the overspeed governor above the windows in such way, that the point of the rope runout from the main sheave and the point of the rope fixing to the lever of the locking mechanism of the overspeed governors on the cabin, was on the same vertical line and the deviation should be no more than 5 mm. Also by overspeed governor installation is necessary that the angle between the sheave axis and the vertical was no more than 3. If this angle is more than 3, it may lead to uneven wear of the overspeed governor sheave and of the rope, that may lead to incorrect operation of overspeed governor or loss of functionality. If necessary, align the overspeed governor by means of gaskets. 2. To mark the point of drilling, to make drilling the holes and install the dowels. To install the overspeed governor by means of respective bolts in the predrilled holes with dowels. It is allowed to use the welding instead of dowels, in case of the presence of the embedded parts in the machine room. 3. To cut the rope with sufficient reserve and to put in a working groove of wedge-shaped cross section of the overspeed governor. Attention!!! The overspeed governor is configured to the desired speed at the factory. The adjusting mechanism is sealed. No additional configuration is required. 2.2 The overspeed governor installation 119 OG Moment 250 MRL/1 1. To fix the overspeed governor on the rail guide by means of 6 clamps (not included in the package) so, that the point of the rope runout from the main sheave and the point of the rope fixing to the lever of the locking mechanism of the safety devices activation, was on the same vertical line and the deviation should be no more than 5 mm. Also by overspeed governor installation is necessary that the angle between the sheave axis and the vertical was no more than 3. If this angle is more than 3, it may lead to uneven wear of the overspeed governor sheave and of the rope, that may lead to incorrect operation of overspeed governor or loss of functionality. If necessary, align the overspeed governor by means of gaskets. 2. To cut the rope with sufficient reserve and to put in a working groove of wedge-shaped cross section of the overspeed governor. 9
Attention!!! The overspeed governor is configured to the desired speed at the factory. The adjusting mechanism is sealed. No additional configuration is required. 3. Checking of the overspeed governor efficiency 1. To throw the rope of the overspeed governor from the working sheave on the small sheave, this simulates the increase of speed, it gives possibility to check the settings of the overspeed governor at the rated speed of the elevator cabin moving. When there is a frequency inverter on the main drive of the Elevator it is allowed not to use a small sheave for this test, and the elevator acceleration until the overspeed governor activation is realized by means of frequency inverter of the main drive. 2. To check the tension of the overspeed governor rope. If the tension is insufficient, the rope should be pulled additionally by means of adjustable tension device. 3. To start the elevator cabin on the rated speed. 4. The overspeed governor needs to interrupt the electrical circuit of the Elevator safety work and to operate. 3.1 Checking the traction ability of the overspeed governor nahdle. 1. To check the tension of the overspeed governor rope. If the tension is insufficient, the rope should be pulled additionally by means of adjustable tension device. 2. To start the elevator cabin down on the rated speed. 3. For overspeed governor 113OGМоment250MR 114OGMoment250A3 3. For overspeed governor 115OGМоment250MRL 119OGMoment250MRL/1 Click on the lock button pos.14, the overspeed governor in this case should work. Remotely to activate the electromagnet pos.14, the overspeed governor should work in this case. In case of refusal of overspeed governor actuation its further operation until the determination of the reasons is prohibited. Check the correctness of overspeed governor installation, its mounting and location, and also the correctness of the mounting and location of the tension device. If the reason of the failure is not found, the overspeed governor should be send for checking on the address of the company Metroplast During operational checks the people presence in the cabin is prohibited. 10
4. Maintenance, control, repair Defective parts must be replaced immediately. The operation of the overspeed governor with the failed parts is not allowed. Further operation of the overspeed governor is prohibited in case of: - presence of deformation and damage on the parts of the overspeed governor. - seals damages on the spring adjustment. In the process of the overspeed governor operation it is not allowed to remove the seal and to adjust the spring tension. To ensure safety and efficiency of overspeed governor it is necessary to perform the maintenance work in accordance with this user manual. The maintenance work must be performed only by trained personnel. Should, if necessary, but not less 1 times in 3 months: - to clean the sheave of the overspeed governor from dirt and grease (in case of their presence) - to check the reliability of the mounting bolts of the overspeed governor. All the bolts must be tightened. - visually inspect the overspeed governor for the presence of defects and wear - visually check the sheave of the overspeed governor for the presence of the wear. The distance from the outer surface of the sheave to the rope must be the same as the diameter of the sheave and must be 4 mm. - to make sure that the hooks pos.9 can rotate on their axis without jamming Additionally for overspeed governors 115 OG Moment 250 MRL, 114 OG Moment 250 A3, 119 OG Moment 250 MRL/1: - to ensure in the normal operation of all electromagnets. 5. General information 5.1 Completeness of delivery The package includes: - the overspeed governor 1 pc. - instruction of installation and operation 1 pc. - a copy of the certificate of conformity 1 pc. 5.2 The label 11
The example of the label The label is placed on the overspeed governor. The label shows the following data: - The name of the manufacturer - the overspeed governor model - the rated speed of elevator, m/s - the minimum and maximum speed, by which the overspeed governor is activated, m/s - the serial number of the overspeed governor. 5.3 The liability and warranty This guide is intended for staff familiar with the elevator installation and maintenance. Not allowed: the usage of the overspeed governor not on purpose; the installation of defective or improper purpose the overspeed governor; to make any changes to the design of the overspeed governor without the coordination with the manufacturer; «Metroplast» refuses from any responsibility for the problems, caused by non-observance of the provisions of this manual or technically wrong actions, negatively affecting the performance of the product. 5.4 Denial of warranty and disclaimer Upon the occurrence of one or more of the following reasons may be denied in warranty service: - the overspeed governor was used not on purpose; - non-observance of rules of installation, operation, maintenance and conditions of transport and storage; - unskilled installation, commissioning and maintenance of the overspeed governor; - insufficient control over the details of the overspeed governor which is susceptible to wear; - unqualified and / or unauthorized repair; - the usage of non-original spare parts; 5.5 The spare parts It is necessary to use only the original spare parts. Failure to comply with this requirement, the product is removed from warranty service. 5.6 The transport and storage The product comes in cardboard boxes. Weight of one box is about kg. It is necessary to keep the following conditions during the transport and storage: - to prevent the ingress of moisture and dust to the product; - to prevent the falling and deformation of the product; - to prevent contamination of the overspeed governor and its working parts. - the temperature in the room -50 +50 C; - Rel. humidity max. 80 % at 20 C, without the formation of dew or frost; 12
5.7 Safety standards For the safety of their work during installation and maintenance of overspeed governor are responsible themselves assemblers and adjusters. Installation and maintenance must be carried out in a sequence that describes this guide. The personnel performing works on installation and maintenance, must be familiar with this manual. The overspeed governor requires special attention, as its impeccable work ensures the safe elevator use. 6. Possible faults and their causes Fault The overspeed governor actuation at the nominal speed of the Elevator moving While the overspeed governor actuation the elevator cabin is not landing on the safety devices Possible cause -Unrestricted spring wear. - Insufficient tension of the rope of overspeed governor - Pollution or the presence of excess lubricant on the rope of the overspeed governor and/or in the groove of the working sheave of the overspeed governor - The wear of the grooves of the overspeed governor sheave - Malfunction of the drive mechanism of the safety devices. 13