Related Manuals for ABB Mechanism HMB-8
Summary of Contents for ABB Mechanism HMB-8
- Page 1 641P026-008 Instructions for the HMB-8 / HMB-8.7 (formerly HMB-11) Mechanism © ABB Inc. Westmoreland Distribution Park East 100 Distribution Circle Mount Pleasant, PA 15666 www.abb.com www.abbhvsg.com © Copyright 2005...
-
Page 3: Table Of Contents
641P026-008 HMB-8 / HMB-11 Mechanism © Contents Contents Figures Figure 1 Introduction HMB-8 Hydraulic Operating Mechanism Description (cross-cut views) Hydraulic Elements Figure 1b HMB-8 Hydraulic Operating Mechanism Principles of Operation (external views) CLOSE Operation OPEN Operation Figure 2 Over-Pressure Relief Device HMB-8 Mechanism - High and Low Pressure Figure 3 Mechanism Maintenance... - Page 4 Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referred to ABB Inc., Westmoreland Distribution Park East, 100 Distribution Circle, Mount Pleasant, PA 15666, Phone No. (724) 696-1500, Fax No.
- Page 5 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 5 4 November 2005...
-
Page 6: Introduction
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 6 HMB-8 Mechanism The low pressure hydraulic circuit is sealed from atmo- sphere by very reliable static and dynamic seals. A split, bolted coupling is used to attach the drive (or output) shaft of the mechanism to the operating rod of the circuit Introduction breaker linkage or pole unit. -
Page 7: Principles Of Operation
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 7 Principles of Operation Mechanism Maintenance The HMB-8 mechanism uses the principles of hydraulics Major maintenance involving disassembly of the HMB-8 to compress and charge the disc spring assembly. Hy- mechanism can be performed by factory-trained represen- draulic oil is transferred from a low pressure reservoir tatives or by trained customer technicians. - Page 8 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 8 Low-pressure connector Oil gauge glass Oil drain valve closed Filter Pressure release lever / Overflow valve open Oil unit Vacuum pump Illustration 1 Filling the Operating Mechanism 4 November 2005...
-
Page 9: Pre-Maintenance Procedures
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 9 To prevent injury or equipment dam- 4.1.3 Manually Operating the Operating Mechanism age, the breaker must be removed The circuit breaker can be operated by hand by pressing the hand plungers of the pilot valves (Figure 8). The circuit from service, isolated, and grounded breaker may be operated only if the disc spring assembly before performing any maintenance... -
Page 10: Limits On Pump Motor Operation
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 10 4.2.4 Limits on Pump Motor Operation 1) or 1/4 of the total window for a vertically-oriented mechanism (Plate 2). The oil level can be distinguished During commissioning and testing, the number of pump by its red color. -
Page 11: Replacing The Open And Close Pilot Valves
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 11 Remove the four cap screws 51115 from the cover Important: After any maintenance that could allow even 51023 and pull the cover straight out from the main small amounts of air to enter the hydraulic sys- body casting. -
Page 12: Refilling The Mechanism With Oil
Remove the mechanism cover 51028. Trade name: Esso UNIVIS J 13 or Aero Shell Fluid 4 Be sure that the mechanism is in the OPEN position. ABB designation: GPHL730041R0001 or ED4.1.3326 Remove the cap from the oil fill port 51127 (Fig. 1). Notice: Only use the recommended oils listed above. -
Page 13: Replacing The Pump Motor
24-hour period when the breaker is either in the OPEN Install the small bevel gear onto the shaft of the new or CLOSE position, contact ABB Service. pump motor but do not tighten the set screw. Place the breaker in the CLOSE position and repeat step 2. -
Page 14: Spring Travel Limit Switch Settings
Should the pump average more than 20 starts a day, check the system for hydraulic oil leakage and/ or contact ABB Service Department. Five seconds are required to restore the mechanism to full system pressure from pump start to pump stop when operating due to slow internal leakage. -
Page 15: Adjusting The Opening Closing Velocities
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 15 Adjusting the Opening Closing Velocities Circuit breaker timing tests are performed routinely as part of circuit breaker maintenance. Contact velocity measure- ments are a part of this testing. The velocity of the HMB-8 mechanism is factory-set and should not significantly change over the life of the circuit breaker. -
Page 16: Manually Charging The Operating Mechanism
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 16 Manually Charging the Operating Mechanism The high-pressure hose shall be connected to the high-pressure side of the pump, marked by “P”. Upon a malfunction with a failure of the pump motor a hand emergency pump can be used to charge the operating Open the oil drain valve and pump until oil comes out mechanism (Illustration 2). - Page 17 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 17 Oil drain valve Hand High-pressure emergency connector Low-pressure pump hose Operating lever High-pressure S = suction connector hose P = high pressure connector Illustration 2 Hand Emergency Pump 4 November 2005...
-
Page 18: Troubleshooting
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 18 Troubleshooting Although the HMB mechanism is a low-maintenance design, problems can arise if commissioning and maintenance procedures are not followed. Table 4 lists problems, causes, and remedies that could occur when commissioning and operating the HMB-8 mechanism i t c c t i... - Page 19 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 19 NOTES: 4 November 2005...
- Page 20 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 20 51107 51107 97612 51036 51276 View A End View 51153 51122 97608 51033 51038 97605 97604 51127 51002 51150 51005 51004 51013 97603 51037 51028 51008 View B Side View 51031 4 November 2005...
-
Page 21: Figure 1
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 21 Figure 1 HMB-8 Hydraulic Operating Mechanism (Cross-cut Views) Weight is 1,030 lbs. 51002 Pump Motor 51004 Pilot Valve (Close) 51005 Pilot Valve (Open) 51008 Disc Spring Assembly 51013 Oil Drain Valve 51028 Mechanism Cover 51031... - Page 22 97606 51276 View A End View 51122 97608 51033 97604 97609 Oil Level View Window 51028 51031 97611 View B Side View...
-
Page 23: Figure 1B
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 23 Figure 1b HMB-8 Hydraulic Operating Mechanism (External Views) Weight is 1,030 lbs. 51028 Mechanism Cover 51031 End Casting 51033 Position Indicator 51122 Mounting Flange 51276 Coupling 97604 Auxiliary Switches 97606 Wiring Connectors 97608 Adjustable Auxiliary Link... - Page 24 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 24 4 November 2005...
-
Page 25: Figure 3
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 25 97612 51045 51107 51107 51006 51002 51005 51004 51107 Figure 3 HMB-4 Position OPEN 51002 Pump Motor 51004 Pilot Valve (Close) 51005 Pilot Valve (Open) 51006 Changeover Valve 51045 Pressure Relief Valve 51107 High Pressure Block 97612... -
Page 26: Figure 4
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 26 Optional Switch Additions Primary Switches 51047 51046 Gear Rack Spring Discharge Pack Motion 51046 SIDE VIEW END VIEW Figure 4 Mechanical Switch 51046 Pump Limit Switch and Cam Assembly 51047 Switch Assembly 4 November 2005... -
Page 27: Figure 5
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 27 51207 Pump Housing 51002 51115 51015 51018 51019 51059 51177 51094 51014 51079 51078 51023 Figure 5 Pump with Motor 51002 Pump Motor 51014 Pump Element 51015 Eccentric Shaft 51018 Small Bevel Gear 51019 Large Bevel Gear... -
Page 28: Figure 6
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 28 97617 51107 97618 97615 51007 Spring Charge Position Measurement 97616 51063 51008 Figure 6 Measurement of Spring Tension 51007 Accumulator Piston 51008 Disc Spring Assembly 51063 Loading Ring 51107 High Pressure Cylinder 97615 Barrel Seal Assembly 97616... -
Page 29: Figure 7
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 29 51012 51008 51071 51088 51087 51072 51083 51084 Figure 7 Bottom Side of Working Piston 51008 Disc Spring Assembly 51012 Drive Piston 51071 Turcon Glyd Ring 51072 O-Ring 51083 O-Ring 51084 Supporting Tube 51087... -
Page 30: Figure 8
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 30 TOP VIEW Moving Piston Location of Hand Plunger for manual operation Trip Trip Close Coil Coil Coil 51006 MECHANISM BODY 51005 51004 51005 High Pressure Access Trip Speed Close Barrel Seal Adjust Speed Assembly... -
Page 31: Figure 9
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 31 51016 Spring Clip for deactivating the Close-Position Interlock Figure 9 Low Pressure Interlock Assembly 51016 4 November 2005... -
Page 32: Figure 10
641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 32 51271 97609 Figure 10 Auxiliary Switch Drive Arm 51271 Drive Lever 97609 Auxiliary Drive Block 4 November 2005... - Page 33 641P026-008 HMB-8 / HMB-8.7 Mechanism (formerly HMB-11) © Page 33 NOTES: 4 November 2005...
- Page 34 ABB Inc. Westmoreland Distribution Park East 100 Distribution Circle Mount Pleasant, PA 15666 Tel: (724) 696-1500 Fax: (724) 696-1502 www.abb.com www.abbhvsg.com...