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Summary of Contents for Domnick Hunter Maxigas Series
- Page 1 104 - 120 SERVICE GUIDE...
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Page 3: Table Of Contents
CONTENTS 1 Safety Information........................................ 5 Markings and Symbols ................................... 6 2 TECHNICAL SPECIFICATION....................................7 3 Menu Interface ........................................9 ppm............................................12 3 Servicing ..........................................15 3.1 Cleaning........................................15 3.2 Service Intervals ......................................15 3.3 Service Kits ......................................... 16 3.4 Service Procedures ....................................17 3.4.1 Exhaust Silencer Replacement ................................ -
Page 5: Safety Information
If the operator employs a procedure, item of equipment or a method of working which is not specifically recommended by domnick hunter, ensure that the equipment will not be damaged or become hazardous to persons or property. -
Page 6: Markings And Symbols
1.1 Markings and Symbols The following markings and international symbols are used on the equipment: Caution, Read the User Guide. Pressurised components on the system Remote control. Generator may start Risk of electric shock. automatically without warning. Wear ear protection Read the User Guide Use a forklift truck Conformité... -
Page 7: Technical Specification
2 TECHNICAL SPECIFICATION MAXIGAS Parameter Units Inlet Air Quality ISO 8573.1: 2001 Class 2.2.1 barg 6 – 10 and 10 - 18 Inlet Pressure (psig) (88 – 145) and (145 - 261) 5 – 50 Inlet Temperature (41 – 122) Port Connections Air Inlet G1”... -
Page 9: Menu Interface
3 Menu Interface All of the operational parameters and data are accessed through the menu driven interface (refer to the menu map over the page). A breakdown of the menus are as follows: Menu 1 - Hours Meters There are three hour meters available for viewing: The time in hours that the generator has been producing gas. - Page 10 Menu Map...
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Page 12: Ppm
Menu 3 – Customer Settings : Item Description Units Step Default Oxygen alarm Calibration Calibration software sub section Oxygen alarm level See oxygen display settings Oxygen alarm delay Start option enable Economy enable Fault relay on stop 0 = No 1 = Yes Set Oxygen Analogue FSD See oxygen display settings... - Page 13 Menu 6 – Service 3 : I / O Menu Item Description Units Step Default Digital input summary 0000 1111 Digital output summary 000000000000 111111111111 Pressure sensor input Bar/PSI/MPa Pressure sensor 4mA offset 0.01 -0.10 +0.10 4.00mA Pressure sensor mA gain 0.01 -0.10 +0.10...
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Page 15: Servicing
(48 Months) (60 Months) domnick hunter ltd and its distributors offer a comprehensive range of preventative maintenance programmes, for further details contact your local domnick hunter distributor or domnick hunter ltd direct (tel. 44 (0)191 402 9000) for further details. -
Page 16: Service Kits
3.3 Service Kits Service Kit Description Kit No. A – Silencer Service Exhaust Silencer Kit 608620090 B – Filter Service Filter Element Kit 020AR PPM O Cell Kit 606500002 C – O Cell Service Cell Kit 606500003 PPM Valve Overhaul Kit (without equalisation valve) 606500004 D –... -
Page 17: Service Procedures
3.4 Service Procedures It is essential that the generator is isolated from the mains power supply and fully depressurised before carrying out any servicing procedures. Stopping the equipment Close the ball valve on the N2 Outlet port. Press [ ] to initiate the shutting down sequence. The generator will complete the current cycle and then exhaust both beds. -
Page 18: Exhaust Silencer Replacement
Ensure that the generator is isolated from the mains power supply and fully depressurised before carrying out any of the following service procedures. 3.4.1 Exhaust Silencer Replacement The exhaust silencer is located under the inlet manifold assembly. Unscrew the silencer assembly from the exhaust flange plate and remove. -
Page 19: Outlet Flow Valve Replacement
3.4.4 Outlet Flow valve replacement The outlet flow valves are mounted on the outlet flow assembly. Disconnect the solenoid plugs on both valves making a note of which plug belongs to which valve. Unscrew the 8 off M5 socket head cap screws that hold the valves in place and remove. -
Page 20: Inlet Valve Replacement
3.4.6 Inlet Valve Replacement The inlet plate assembly is located above the lower manifold as shown. Disconnect the inlet pipe-work, including the ball valve, from the port marked “Compressed Air Inlet”. Ensure that the pipe-work remains adequately supported whilst disconnected from the generator. -
Page 21: Outlet Valve Replacement
3.4.7 Outlet Valve Replacement The outlet plate assembly is located below the upper manifold as shown. Disconnect the inlet pipe-work, including the ball valve, from the port marked “Compressed Air Inlet”. Ensure that the pipe-work remains adequately supported whilst disconnected from the generator. -
Page 22: Equalisation Valve Replacement
3.4.8 Equalisation Valve Replacement There are two equalisation assemblies. The upper equalisation assembly is connected to the outlet manifold assembly whilst the lower equalisation assembly is connected to the inlet manifold assembly as shown. The procedure for replacing the cylinders is the same for both the upper and lower assemblies. -
Page 23: Exhaust Valve Replacement
3.4.9 Exhaust Valve Replacement The Exhaust valve assembly is located below the inlet manifold as shown. Unscrew the exhaust silencer assembly from the exhaust flange plate and remove. Remove the pneumatic tubing from the cylinders. Whilst supporting the exhaust valve assembly, remove the 8 off M10 Hex HD bolts that hold the assembly onto the manifold. -
Page 24: Oxygen Analyser Calibration
3.5 Oxygen Analyser Calibration The frequency of calibration is dependent on how critical the quality of gas is to the end process and on the customer’s own internal procedures. However, it is recommended that the analyser be calibrated at least every 3 months. The calibration method will depend on whether the generator is a % or ppm generator and if calibration is to be carried out against a calibration gas supply or against an independent analyser. -
Page 25: Oxygen Analyser
4 Oxygen Analyser The Oxygen analyser is located in the electrical compartment behind the facia. All connections to the module are provided in the form of screw terminals that are located at the top and bottom of the module as shown. Function sensor (-ve) sensor (+ve) -
Page 26: E1 - Calibrate Sensor
E1 – Calibrate sensor Connect a known concentration of gas, at a flow rate of between 500 and 1000cc/min, to the port marked Allow time for the sensor to respond. Using the [ ] and [ ] keys set the reading to that of the calibration gas level. Press [ ] to span the sensor. -
Page 27: E5 - Sensor Simulation
E5 – Sensor simulation This option allows the user to simulate the sensor output in order to test the functionality of the analyser. The analogue output will reflect the gas level and the relays will be activated when the alarm levels are reached. Use the [ ] and [ ] keys to display the desired gas level. -
Page 28: E8 - Diagnostics
E8 - Diagnostics This feature is a view-only feature. No configuration changes are possible from within this menu. The display will alternate between the current value and diagnostic code E:8x: where x is one of the following variables: 0 Sensor signal, A to D counts low ppm range. 1 Sensor signal, A to D counts high ppm range. -
Page 29: Troubleshooting
In the unlikely event that a problem occurs on the equipment, this troubleshooting guide can be used to identify the probable cause and remedy. Troubleshooting should only be attempted by competent personnel. All major repair, and calibration work should be undertaken by a domnick hunter trained, qualified and approved engineer. Fault... -
Page 31: Service Record
6 Service Record Date of Commissioning Serviced By Service Hours Date Comments / Observations (Hours) Shown Print Initials 4,000 8,000 16,000 20,000 24,000 28,000 32,000 36,000 40,000... -
Page 33: Appendix A
APPENDIX A SCHEMATICS... - Page 36 Parker Hannifin ltd. Parker Hannifin ltd Dukesway, Team Valley Trading Estate, domnick hunter has a continuous policy of product development and Gateshead, Tyne and Wear, although the Company reserves the right to change specifications, it England NE11 0PZ attempts to keep customers informed of any alterations.
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