User`s Manual
Contents
1. 2000 and GB3836 2 2000 The casing should be securely grounded Never open the cover with the unit energized Troubleshooting For troubleshooting refer to Table 2 Table 2 Troubleshooting Fault Possible cause Remedial action Remark Abnormal or even no sound is generated Open circuit may exist 2 The transformer may be 1 Replace the wire defective 2 Replace the transformer 3 The horn may be 3 Replace the horn defective The casing is damaged The casing may be hit by Replace the damaged force component 7 7 1 7 2 8 1 Installation of Protection Devices and Accident Countermeasures Installation of protection devices and precautions The enclosure should be securely grounded and the grounding resistance tested after installation should be less than 0 7 Accident countermeasures In case of failure turn off the unit in normal order Identify the cause and replace the defective component or return the unit to DSPPA for repair Service and Maintenance Regular service and maintenance 8 2 8 3 8 4 8 4 1 8 4 2 8 4 3 8 4 4 8 4 5 8 4 6 8 4 7 8 5 9 1 Periodically remove the dirt on the unit and frequently check the flameproof joint In case of rusty flameproof joint poor electrical contact or seriously reduced insulation resistance repair as soon as possible Service and maintenance during use Always avoid water f2. DSP204H Flameproof Horn Speaker User s Manual DSPPA Acoustic Technology Co Ltd Please read this manual carefully before use 1 Overview 1 1 Features 1 1 1 The product features superior flameproof performance and sufficient mechanical strength 1 1 2 High sensitivity and electricity sound efficiency 1 1 3 High fire resistance generates no hazardous gas or environmental pollution 1 1 4 Ease of use and maintenance 1 2 Designation of model DSP 204 H 30 Power Horn L Serial No DSPPA 1 3 Purposes and scope of application 1 3 1 This product is suitable for broadcasting paging and emergency broadcasting in chemical plants gas stations and the like which have a risk of explosion due to methane mixture petroleum and other dangerous gas It is applicable to a site where Class II T6 explosive atmosphere exists or steam or air is generated 1 4 For type and specifications see Table 1 Table 1 Rated power Impedance Audio input Cable entry Weight 5VA 89 20009 100V 4 16Q terminal 1 2G 10VA 89 10009 100V 4 16Q terminal 1 2G 15VA 89 6679 100V 4 16Q terminal 1 2G 20VA 8Q 5002 100V 4 16Q terminal 1 2G 25VA 89 4009 100V 4 16Q terminal 1 2G 30VA 8Q 333Q 100V 4 16Q terminal 1 2G 7 2 kg 1 5 1 6 1 6 1 1 6 2 1 6 3 1 7 1 7 1 1 7 2 1 8 Note As required by the customer products of fixed voltage of 100V can be customized als
3. ation of speaker is adjustable Tighten the speaker on the bolts previously mounted adjust the orientation of speaker and retighten the securing nuts on the support 4 4 Connect the red and white audio input cables of the speaker to the audio transmission cable inside the corrosion resistant pipe and securely ground the inner and outer yellow green ground wires 4 5 Connect the corrosion resistant pipes with sealing pad between joints to ensure that the pipe connection from the horn cable entry to the audio source output terminal is airtight Fig 2 Installation Corrosion resistant pipe stainless steel pipe etc Cable entry device ey stainless steel Z C ee Epoxy resin Audio transmission cable cable seal 70mm Sealing pad f l ee 2 M8 OD er oe 5 Use and Operation 5 1 Preparation and inspection before use 5 1 1 Please read this manual carefully before use 5 1 2 Check the nameplate of the product for conformity to the ratings such as rated capacity and voltage 5 1 3 Check the enclosure and components for any damage 5 1 4 Check that the flameproof joint is not damaged or rusty and that the gap of flameproof joint is less 4 5 2 5 2 1 5 2 2 5 2 3 than 0 15mm Check each fastener for any looseness and retighten them Check that the cables are securely pressed and sealed Safety and protection before and during use The speaker is a flameproof type and conforms to provisions specified by GB3836 1
4. ken to avoid entry of rain or snow and no strong vibration or impact should be applied to the product Storage conditions and precautions The product should be stored at a well ventilated place which should not be exposed to rain direct sunlight corrosive gas or gas that will damage the insulation Unpacking and Inspection Please check the product upon receipt of the product Note Special attention should be taken to the flameproof joint Check the flameproof joint for any damage or rust Inspection items Check the nameplate data for conformity to the data such as model rated capacity and input voltage which are specified in the purchase contract Check that all manufacturer s documents are provided Check whether the contents of package are as listed in the packing list Check that each component is not damaged or deviated and that each fastener is tightened Check that each flameproof joint is not damaged and that its gap is normal Miscellaneous Quality assurance after sales service and contact DSPPA will take responsibility for repair of failure due to quality problem in no charge provided that the product is handled stored installed and used normally within 6 months after put into use or within 12 months after shipment whichever is earlier In case of failure due to quality problem please call DSPPA s After sales Dept at 020 86163230 602 Ordering Please specify the product name model
5. nsists of the rear casing front cover and cable entry device which will not have permanent deformation or damaged as 7J impact test proven The cable entry device uses epoxy resin seal with a length of greater than 20mm With a 60 80 mesh stainless steel explosion screen equipped a certain gap is provided to prevent the fire from spreading The audio voltage is fed to the speaker that moves in relation to magnetic force to vibrate air particles for sound generation 3 Technical Features Dimensions and Weight 3 1 Specifications Characteristic sensitivity 105dB effective frequency range 400Hz 10kHz explosion proof marking ExdIICT6 degree of protection IP54 3 2 For dimensions refer to the figures below The weight is 7 2 kg Fig 1 Construction is 355 _ 250 15X9 4 Installation 4 1 Since the product has a weight of 7 2 kg the product should be fixed to a solid position with two bolts with a diameter of 8 mm see Fig 2 Be sure that the bolts are tightened securely 4 2 Tighten the cable entry device and seal the loose cables at the horn cable entry by using epoxy resin with a length of not less than 20mm Be sure that the sealing is tight and securely 4 3 Loosen the securing nuts on both sides of the support so that the orient
6. o and fixed impedance 4 16Q terminal are available Operating conditions a Altitude not greater than 1000m b Ambient temperature 40 C max 20 C min c Humidity not greater than 95 RH at 25 C d No gas or steam that is corrosive to metal or damages the insulation Technical specifications Applicable standards GB4028 2008 Degrees of Protection Provided by Enclosure IP Code GB3836 1 2000 Electrical Apparatus for Explosive Gas Atmospheres Part 1 General Requirements GB3836 2 2000 Electrical Apparatus for Explosive Gas Atmospheres Part 2 Flameproof Enclosure d Explosion proof type Flameproof Explosion proof marking ExdIICT6 Environmental and energy impact The product uses environmentally friendly Rosh material generating no pollution to the environment Also it features a long service life and can be recycled when disposed The product is constructed with a foldable horn making the electricity sound efficiency greatly higher than products of the same type Therefore the power and engineering cost are reduced Safety The product is inspected by the inspection department designated by the State and proven by explosion proof certificate and production license thus guaranteeing a safe and reliable service All insulation materials used are non oxidizing self extinguishable and non toxic types 2 Construction and Principle of Operation The enclosure is robust and co
7. quantity capacity input voltage special requirements if any and the like when ordering DSPPA Acoustic Technology Co Ltd Add No 1 Xiahe Rd Jianggao Town Baiyun Dist Guangzhou P R China Tel 020 86163230 020 86163230 602 After sales Dept Fax 020 86160766 P O Box 510450 Http www dsppa com Version I July 2008
8. rom entering the casing during use and timely remove dust accumulated on the casing to ensure good heat sinking effect of the speaker Period of maintenance Once or twice each month Normal maintenance procedure Check the bolts flat washers spring washers and nuts securing the flameproof joint for any looseness Remove dust and rust accumulated on the flameproof joint and apply anti rust grease on each flameproof joint Check that the gap of the flameproof joint is equal to or less than 0 15 mm If not repair or replace the flameproof joint Check that the hold down bolts of cable entry device are tightened and that the epoxy resin sealing is in good conditions Check that the inner and outer ground wires are securely grounded Check the terminals for any abnormal heating and looseness Check that the electrical connection is in good conditions Check that the insulation resistance of casing is normal Never check or move the unit with the unit energized Service and maintenance for long term storage For long term storage proper insulation moisture proof and flameproof rust proof measures should be taken for the product To use the product after long term storage check the electrical performance of product before use Handling and Storage Handling precautions 9 2 10 10 1 10 2 10 2 1 10 2 2 10 2 3 10 2 4 102 5 11 During handling of the product proper measures should be ta
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