Table of Contents
Advertisement
Braking System EBRA20
Operating instruction
No part of this publication may be reproduced or
translated, even in part, without prior written permis-
sion from WITTUR GmbH.
Änderungen vorbehalten!
Braking System EBRA20
WITTUR GmbH
Sowitschstrasse 1 • A-3270 Scheibbs, Austria
Tel. +43 (0) 7482/42542-0 • Fax +43 (0) 7482/42542-232
http://www.wittur.at • E-Mail: info@wittur.at
THE LMC LIFTCOMPONENTS MANUFACTURING AND COMMERCE COMPANY
Blatt/ sheet
Datum/ date
Stand/ version B-24.05.2005
Geprüft/ approved WAT/MZE
We reserve the right to make alterations with respect
to the specifications and figures in this manual.
D7AJMGB.000
23.05.2002
Subject to change without notice!
Advertisement
Table of Contents
Related Manuals for WITTUR EBRA20
Summary of Contents for WITTUR EBRA20
- Page 1 Braking System EBRA20 Blatt/ sheet D7AJMGB.000 Datum/ date 23.05.2002 Stand/ version B-24.05.2005 Geprüft/ approved WAT/MZE Operating instruction Braking System EBRA20 WITTUR GmbH Sowitschstrasse 1 • A-3270 Scheibbs, Austria Tel. +43 (0) 7482/42542-0 • Fax +43 (0) 7482/42542-232 http://www.wittur.at • E-Mail: info@wittur.at...
- Page 2 3 Installation Installation of EBRA20 to the car frame crosshead beam ....D7AJMGB.007 Preparations and installations in the machine room ....D7AJMGB.009 Electrical installation of the braking system .
-
Page 3: General Information Prior To Installation
Geprüft/ approved WAT/MZE Operating instruction General information prior to installation Description and functions The EBRA20 guide rail brake is used as an ascend- The operating range is defined as follows: ing car over speed protection safety device. • Max. nominal speed 2.0m/s... -
Page 4: Safety Precautions
/ product damage during installa- ed in these operating instructions. tion, maintenance and repair work. The WITTUR guarantee may be voided if parts Important safety advice and danger warnings are other than those described in these instructions emphasized with the following symbols: are installed. - Page 5 Advice for when working on Before starting installation work: safety components Only properly trained personnel may carry The Brake system EBRA20 is classified as safety out work, or be allowed access to the components. It is most important that the stan- installation site.
-
Page 6: Content Of Supply
WITTUR GmbH. Änderungen vorbehalten! Subject to change without notice! THE LMC LIFTCOMPONENTS MANUFACTURING AND COMMERCE COMPANY One pcs. EBRA20 (Q<1000kg) or two pcs. EBRA20 (1000<Q<2000kg) pre-adjusted and sealed at the factory Electrical interface (optional): • Controller box (incl. electronics... - Page 7 Geprüft/ approved WAT/MZE Operating instruction Name plate, designation, identification The EBRA20 identification indicator is located on The EBRA20 is preset in the factory and should not the top of the brake connection box. be adjusted on site conditions. It gives following data:...
-
Page 8: Installation
Datum/ date 23.05.2002 Stand/ version 23.05.2002 Geprüft/ approved WAT/MZE Operating instruction Installation Installation of EBRA20 to the car frame crosshead beam The installation could be done during car frame Screw package (1-3) assembling (refer to chapter crosshead beam 601775G04 installation) or also afterwards if the elevator is to be modernized. - Page 9 Operating instruction (4) Fix the EBRA(s) (D) on the adapter plate Screw package 601775G04 There are two EBRA20 units when nominal load of the lift is above 1000kg. Take care of tightening torque Screw M12: 80Nm (5) Connect the connection cables from each brake unit to the car roof terminal box (E).
- Page 10 • 230 VAC power supply including 6 A fuse switch with two NC-contacts (F). • two strands in travelling cable • Brake switch of EBRA20 to be connected in (2) Install the controller box (B) to the machine- safety circuit room wall and connect the cables (C) from the box to the controller cabinet.
- Page 11 Adjustment tasks (1) Close the overspeed governor contact switch If there is battery backup: (F) and put the power ON for EBRA20 230VAC (G). The magnet closes and the brake opens. (4) FIRST Switch battery OFF (J) then connect the plugs (I) if loosen and switch (J) ON.
-
Page 12: Function Testing
Move the car (the car must be empty) to ground floor Before the first test run: • Switch off the EBRA20 so it brakes the eleva- The protective coating of grease is to be carefully removed from the guide rails! •... - Page 13 The car can be driven upwards using the motor be replaced! and when the nominal speed is reached the EBRA20 is activated by the OSG switch (F) and the motor brake is kept open manually during the Change sliding inserts or brake lining if braking.
-
Page 14: Maintenance, Inspection And Repair
6.1.1 General The braking system EBRA20 is basically mainte- The EBRA20 can only be used with sliding nance free. The whole installation is designed so guides shoes. Therefore a thin coating of that no large maintenance operations have to be... -
Page 15: Maintenance And Inspection Check List
The burrs coming from the rail in braking may stuck to the sliding element thus they The operation of the EBRA20 brake can be tested have to be cleared after a braking if the following the instructions in chapter 5 Function brake makes noise. - Page 16 Braking System EBRA20 Blatt/ sheet D7AJMGB.015 Datum/ date 23.05.2002 Stand/ version 23.05.2002 Geprüft/ approved WAT/MZE Operating instruction 6.2.1 Checking and changing the brake shoe (1) Put a clamp to the brake magnet to ensure that the brake magnet will not release during...
- Page 17 6.2.4 Changing the battery (1) SWITCH OFF the battery (2) and the power of EBRA20 (3) before changing the battery NOTE! There may be 230 V in wires against the earth. (2) Remove the fixing and change the battery (1)
-
Page 18: Carrying Out Repairs
• Check that the contact (1) is closed when the EBRA20 is open EBRA20 does not open, even if the power is ON • Check the outputs from EBRA control (refer to following sketch): Switching the power ON for X1 Outputs: X2: 230 VAC;... - Page 19 OFF. The car has run overspeed (refer to chapter 6.5.1) The main difference is, that the EBRA20 is an inde- pendent brake which is released in overspeed situ- (2) Power OFF, but the OSG switch has not been ations and reset separately by the OSG switch and switched OFF (refer to chapter 6.5.2)
- Page 20 Switch OFF the possible battery backup (1) from the EBRA20 control • If the car does not move even if the EBRA20 brake is open follow the rescue plan given for • Reset the OSG switch (2) - OSG is accessible that specific elevator type to get the car to the (e.g.
- Page 21 Open the EBRA20 by pressing the brake forks (6) - e.g. by means of a C-clamp • If the car does not move even if the EBRA20 brake is open, follow the rescue plan given for that specific elevator type to get the car to the door zone •...
-
Page 22: Spare Parts List
Braking System EBRA20 Blatt/ sheet D7AJMGB.021 Datum/ date 23.05.2002 Stand/ version B-24.05.2005 Geprüft/ approved WAT/MZE Operating instruction Spare parts list Pos. Component Spare part ... used Number... Art. No. Sliding element 726762H01 Brake Shoe 724488H01 Sliding insert Guide rail width... - Page 23 Braking System EBRA20 Blatt/ sheet D7AJMGB.022 Datum/ date 23.05.2002 Stand/ version B-24.05.2005 Geprüft/ approved WAT/MZE Operating instruction Pos. Component Spare part ... used Number... Art. No. Electronic board 720504G01 Transformer 230/30VAC 50VA 604200G01 Battery 12V 2.1 AH 253300 Circuit breaker...
Need help?
Do you have a question about the EBRA20 and is the answer not in the manual?
Questions and answers