monitor logiq 7 service manual
LINK 1 ENTER SITE >>> Download PDF
LINK 2 ENTER SITE >>> Download PDF
File Name:monitor logiq 7 service manual.pdf
Size: 4940 KB
Type: PDF, ePub, eBook
Category: Book
Uploaded: 8 May 2019, 14:54 PM
Rating: 4.6/5 from 646 votes.
Status: AVAILABLE
Last checked: 12 Minutes ago!
In order to read or download monitor logiq 7 service manual ebook, you need to create a FREE account.
eBook includes PDF, ePub and Kindle version
✔ Register a free 1 month Trial Account.
✔ Download as many books as you like (Personal use)
✔ Cancel the membership at any time if not satisfied.
✔ Join Over 80000 Happy Readers
monitor logiq 7 service manualSome fetal dopplers are also under ECG and patient monitors. For Ultrasound-therapy equipment see the Electrotherapy section. Equipment of ATL and Philips might be identical. Also Siemens, Samsung and Medison. Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired.Support is not desired. GE Logiq 100 Pro Support is not desired.Support is not desired. GE Logiq 200 Support is not desired. GE LOGIQ 200 Pro Support is not desired. GE LOGIQ 200, 200 Pro Support is not desired. GE Logiq 400 Support is not desired.Support is not desired.Support is not desired. GE Logiq A1 Support is not desired. GE Logiq A3 Support is not desired. GE Logiq A5, P5 Support is not desired. GE LOGIQ C3,C5 Premium Support is not desired.Support is not desired.Support is not desired. GE Logiq P5 Support is not desired. GE Logiq S6 Support is not desired. GE Logiq V3, V5 Support is not desired. GE LOGIQ Book XP Support is not desired. GE Portascan Portable Bladder Scanner Support is not desired.Support is not desired. GE Venue Support is not desired. GE Venue 50 Support is not desired. GE Vivid P3 Support is not desired. GE Vivid 5 Support is not desired. GE Vivid 7 Support is not desired. GE Logiq Voluson 730 Expert Support is not desired. GE Logiq Voluson 730 Pro Support is not desired. GE Logiq Voluson 730 Support is not desired. GE Logiq Voluson E Support is not desired. GE Voluson P6, P8 Support is not desired.http://atek-ent.com/upload/file/focal-tn47-manual.xml
- Tags:
- monitor logiq 7 service manual, monitor logiq 7 service manual instructions, monitor logiq 7 service manual pdf, monitor logiq 7 service manual download, monitor logiq 7 service manual free.
HP Sonos 1000 Mindray DC-6 Mindray DC-7 Mindray DC-8 Mindray DC-10, DP-20, DP-30 Mindray DC-33, 35, 39, 40, 42, 44, 45 Mindray DC-70, DC-78 Mindray DC-80 Mindray DC-4900, DP-6900, SK-40 Mindray DC-N3 Mindray DC-T6 Mindray DP-5, DP-7 Mindray DP-5, DP-7 Mindray DP-10, 20, 30 Mindray DP-50 Mindray DP-50 Mindray DP-3200, 3300 Mindray DP-4900, 6900 Mindray DP-6600 Mindray DP 8600, 8800 Mindray DP-8800, 9900 Mindray DP-8800, 9900 Mindray M-5 Mindray M-6 Mindray M-7 Mindray M-7 Mindray M-8, M-9 Mindray M-9 Mindray Resona 7 Ultrasound System - Service manual.pdf Mindray TE5, TE-7 Mindray TE-7 Mindray Z-5, Z-6 Mitsubishi P40U Video Printer Support is not desired. Philips HD 3 Support is not desired. Philips HD 11 Support is not desired. Philips HDI 5000 Support is not desired. Philips M-2540 Support is not desired. Philips iU22, iE33 Support is not desired. Philips Sonos 5500, 7500 Support is not desired. Samsung Accuvix A30 Support is not desired. Samsung Accuvix XG Support is not desired. Samsung HS40 Support is not desired. Samsung HS50A, HS60A Support is not desired. Samsung HS70A Support is not desired. Samsung MySono 201 Support is not desired. Samsung MySono U5 Support is not desired. Samsung MySono U6 Support is not desired. Samsung RS80A Support is not desired. Samsung UGEO H60 Support is not desired. Samsung WS80A Support is not desired. Siemens Acuson S2000 Support is not desired. Siemens G20 Support is not desired. Siemens Sonoline SI-400 Support is not desired. Siemens Sonoline G50, G60S Support is not desired. Sonicaid FM-800. Sign in Forgot Password. My Bench Close Sign In Not A Member. Sign Up Join MedWrench OK name type Receive Summary Emails. With the growing use of ultrasound, healthcare providers are challenged to image patients of various ages and sizes, and encompass a wide range of clinical areas.http://dgsyhg.com/images/xinwen_nr/20190221_105421_195/20201118_223342_165.xml FORUMS View All (4) Ask a New Question 3 Replies -Art Boyer 2 years ago 2 years ago SERVICE MANUAL SERVICE MANUAL Reply 0 Replies -MMiranda 2 years ago 2 years ago NO VIDEO MONITOR HI All. I have a GE S7 ULTRASOUND machine has no video on the monitor. The GFS was changed. All the voltages were checked which are correct.The machine turns on and the touchscreen goes up but the monitor does not turn on. The cable monitor has 20 pins. Is there any way to measure the monitor voltage?Or Pin out diagramI was offered different options. The budget is not limited. I can not determine between a Wideband biplane By continuing to browse the site you are agreeing to our use of cookies. Please review our Privacy Policy for more details. All Rights Reserved. Cancel anytime. Share this document Share or Embed Document Sharing Options Share on Facebook, opens a new window Share on Twitter, opens a new window Share on LinkedIn, opens a new window Share with Email, opens mail client Copy Text Related Interests International Electrotechnical Commission Medical Device Computer Monitor Food And Drug Administration Footer menu Back to top About About Scribd Press Our blog Join our team. Quick navigation Home Books Audiobooks Documents, active. Whether noted or concealed, damage MUST be reported to the carrier immediately upon discovery, or in any event, within 14 days after receipt, and the contents and containers held for inspection by the carrier. A transportation company will not pay a claim for damage if an inspection is not requested within this 14 day period. CERTIFIED ELECTRICAL CONTRACTOR STATEMENT - FOR USA ONLY All electrical Installations that are preliminary to positioning of the equipment at the site prepared for the equipment shall be performed by licensed electrical contractors. Other connections between pieces of electrical equipment, calibrations and testing shall be performed by qualified GE Healthcare personnel.https://www.informaquiz.it/petrgenis1604790/status/flotaganis02072022-1405 In performing all electrical work on these products, GE will use its own specially trained field engineers. All of GE s electrical work on these products will comply with the requirements of the applicable electrical codes. The purchaser of GE equipment shall only utilize qualified personnel (i.e., GE s field engineers, personnel of third-party service companies with equivalent training, or licensed electricians) to perform electrical servicing on the equipment. Mail the information to:service Documentation, 9900 Innovation Drive (RP-2123), Wauwatosa, WI53226, USA. GE Healthcare employees should use TrackWise to report service documentation issues. These issues will then be in the internal problem reporting tool and communicated to the writer.For a complete review of all safety requirements, see the Chapter 1, Safety Considerations section in the Service Manual.GE Healthcare may revise this publication from time to time without written notice. TRADEMARKS All products and their name brands are trademarks of their respective holders. COPYRIGHTS All Material Copyright 2011 by General Electric Company Inc. The service provider must read and understand all the information presented in this manual before installing or servicing a unit. The icons, labels and conventions used on the product and in the service information are described in this chapter. Safety Precaution Messages Various levels of safety precaution messages may be found on the equipment and in the service information. The different levels of concern are identified by a flag word that precedes the precautionary message. Known or potential hazards are labeled in one of following ways:!! DANGER: DANGER INDICATES THE PRESENCE OF A HAZARD THAT WILL CAUSE SEVERE PERSONAL INJURY OR DEATH IF THE INSTRUCTIONS ARE IGNORED.!! WARNING: WARNING INDICATES THE PRESENCE OF A HAZARD THAT CAN CAUSE SEVERE PERSONAL INJURY AND PROPERTY DAMAGE IF INSTRUCTIONS ARE IGNORED.!! CAUTION:!! NOTICE: CAUTION NOTICE NOTE: Indicates the presence of a hazard that will or can cause minor personal injury and property damage if instructions are ignored. Equipment Damage Possible Notice is used when a hazard is present that can cause property damage but has absolutely no personal injury risk. Example: Disk drive will crash. Notes provide important information about an item or a procedure. Information contained in a NOTE can often save you time or effort. Chapter 1 - Introduction 1-3 42 GE HEALTHCARERAFT Standard Hazard Icons Important information will always be preceded by the exclamation point contained within a triangle, as seen throughout this chapter. In addition to text, several different graphical icons (symbols) may be used to make you aware of specific types of hazards that could cause harm. Even if a symbol isn t used in this manual, it is included for your reference. Table 1-3 Standard Hazard Icons ELECTRICAL MECHANICAL RADIATION LASER HEAT PINCH LASER LIGHT Other hazard icons make you aware of specific procedures that should be followed. Indicates the degree of protection provided by the enclosure per IEC IPX 1 - protected against dripping water IPX 7 - protected against the effects of immersion Footswitch Probes Equipment Type BF (man in the box, symbol IEC ) indicates B Type equipment having even more electrical isolation than standard Type B equipment because it is intended for intimate patient contact. Probe connectors Main label on rear of system To identify a defibrillation-proof type CF (heart in box with electrodes, symbol IEC ) applied part complying with IEC Front side of the ECG-preamplifier CAUTION This unit weighs.This symbol indicates that waste electrical and electronic equipment must not be disposed as unsorted municipal waste and must be collected separately. Please contact an authorized representative of the manufacturer for information concerning the decommissioning of your equipment. Rear side of the unit on the plug of each probe These symbols indicate that at least one of the six hazardous substances of the China RoHS Labelling Standard is above the RoHS limitation. The number inside the circle is referred to as the Environmental Friendly Use Period (EFUP). It indicates the number of years that the product, under normal use, will remain harmless to health of humans or the environment. Failure to comply with these precautions or with specific warnings elsewhere in this manual, violates safety standards of design, manufacture and intended use of the equipment Human Safety Operating personnel must not remove the system covers, except for removing front cover to clean air filter. Servicing should be performed by authorized personnel only. Care must be used when moving it or replacing its parts. Failure to follow the precautions listed could result in injury, uncontrolled motion and costly damage. ALWAYS: Use the handle to move the system. Be sure the pathway is clear. Use slow, careful motions. Do not let the system strike walls or door frames. Two people are required when moving on inclines or lifting more than 16 kg (35 lbs).!! WARNING: WARNING USE EXTREME CAUTION WHEN ELEVATING THE UNIT, OR IF IT IS RAISED FOR A REPAIR OR MOVED ALONG ANY INCLINE.DO NOT use the Control Panel as an anchor point. Secure the systems with straps in an upright position and lock the caster wheels (brake). Prevent vibration damage by driving cautiously. Avoid unpaved roads, excessive speeds, and erratic stops or starts. Chapter 1 - Introduction 1-7 46 GE HEALTHCARERAFT Electrical Safety Safe Practices To minimize shock hazard, the equipment chassis must be connected to an electrical ground. The system is equipped with a three-conductor AC power cable. This must be plugged into an approved electrical outlet with safety ground. If an extension cord is used with the system, make sure that the total current rating of the system does not exceed the extension cord rating. The power outlet used for this equipment should not be shared with other types of equipment. To ensure this, correct handling of probes is important and the following points should be noted: Do not drop a probe or strike it against a hard surface, as this may damage the transducer elements, acoustic lens, or housing. Inspect the probe prior to each use for damage or degradation to the Housing, Cable strain relief, Lens and Seal. Do not use a cracked or damaged probe. In this event, call your field service representative immediately to obtain a replacement. Avoid pulling, pinching or kinking the probe cable, since a damaged cable may compromise the electrical safety of the probe. To avoid the risk of a probe accidentally falling, do not allow the probe cables to become entangled, or to be caught in the machine s wheels. Never immerse the probe connector or adapter into any liquid. The ultrasound system is an extremely sensitive and complex medical system. Any unauthorized peripherals may cause system failure or damage. One AUX main outlet is located at the primary power supply. It is used for connecting the two-fold splitter whose outlets are led to the shelves intend for auxiliary devices (e.g., printers) and the AUX main outlet that is accessible on the back of the control console. There could be a potential difference between the protective earth and any line of the computer network including the shield. In this case the only way to operate the system safely is to use an isolated signal link with minimum 4mm creepage distance, 2.5mm air clearance of the isolation device. For computer networks there are media converters available which convert the electrical to optical signals. If in doubt, consult the technical service department or your local representative. All equipment must comply with UL, CSA and IEC requirements. Please observe that some printers may not be medical devices. The lithium ion technology used in the system s battery is significantly less hazardous to the environment than the lithium metal technology used in some other batteries (such as watch batteries). Used batteries should not be placed with common household waste products. Contact local authorities for the location of a chemical waste collection program nearest you. NOTE: CAUTION Regulations vary for different countries. Dispose of a used battery in accordance with local regulations.DO NOT heat the battery or discard it in a fire. DO NOT expose the battery to temperatures over 50 C. Keep the battery away from fire and other heat sources. DO NOT charge the battery near a heat source, such as, a fire or heater. DO NOT leave the battery in direct sunlight. DO NOT pierce the battery with a sharp object, hit it, or step on it. DO NOT use a damaged battery. DO NOT apply solder to a battery. DO NOT connect the battery to an electrical power outlet. CAUTION TO PREVENT THE BATTERY BURSTING, IGNITING, OR FUMES FROM THE BATTERY CAUSING EQUIPMENT DAMAGE, ALWAYS OBSERVE THE FOLLOWING PRECAUTIONS: DO NOT immerse the battery in water or allow it to get wet. DO NOT place the battery into a microwave oven or pressurized container. If the battery leaks or emits an odor, remove it from all possible flammable sources. If the battery emits an odor or heat, is deformed or discolored, or in a way appears abnormal during use, recharging or storage, immediately remove it and stop using it. NOTE: If you have any questions about the battery, consult your local GE representative. Storage of the battery pack: Short-term (less than 1 month): between 0 C (32 F) and 50 C(122 F) Long-term (more than 3 months): between 10 C (50 F) and 35 C (95 F) When charging the battery for the first time after long-term storage, recover the battery pack to original performance through repeating several cycles of full charging and discharging Section Safety Considerations 49 GE HEALTHCAREDRAFT Labels Locations The LOGIQ S7 ultrasound system comes equipped with product labels and icons. These labels and icons represent pertinent information regarding the operation of the unit. Instructions contained in the warnings must be followed.!! DANGER: DANGER DANGEROUS VOLTAGES, CAPABLE OF CAUSING DEATH, ARE PRESENT IN THIS EQUIPMENT.Maintain control of the system power plug. There are no test points to verify isolation, you must wait for at least 20 seconds for capacitors to discharge. Equipment being returned must be clean and free of blood and other infectious substances. GEHC policy states that body fluids must be properly removed from any part or equipment prior to shipment. Under no circumstance should a part or equipment with visible body fluids be taken or shipped from a clinic or site (for example, body coils or and ultrasound probe). Section 1-4 Electromagnetic Compatibility (EMC) What is EMC. Electromagnetic compatibility describes a level of performance of a device within its electromagnetic environment. This environment consists of the device itself and its surroundings including other equipment, power sources and persons with which the device must interface. Inadequate compatibility results when a susceptible device fails to perform as intended due interference from its environment or when the device produces unacceptable levels of emission to its environment. In addition to electromagnetic energy, EMC also includes possible effects from electrical fields, magnetic fields, electrostatic discharge and disturbances in the electrical power supply. Proper installation following all comments noted in this service manual is required in order to achieve full EMC performance Electrostatic Discharge (ESD) Prevention!! WARNING:!! WARNING: WARNING WARNING DO NOT touch any boards with integrated circuits prior to taking the necessary ESD precautions: 1.) When installing boards, ESD may cause damage to a board. ALWAYS connect yourself, via an arm-wrist strap, to the advised ESD connection point located on the rear of the system (to the right of the power connector). 2.) Follow general guidelines for handling of electrostatic sensitive equipment. Risk of electrical shock: System must be turned off. Avoid all contact with electrical contacts, conductors and components. Always use non-conductive handles designed for the removal and replacement of ESD sensitive parts. All parts that have the potential for storing energy must be discharged or isolated before making contact. Chapter 1 - Introduction 1-13 52 GE HEALTHCARERAFT Section 1-5 Customer Assistance Contact Information If this equipment does not work as indicated in this service manual or in the Basic User Manual, or if you require additional assistance, please contact the local distributor or appropriate support resource, as listed below. Included are descriptions of the facility and electrical needs to be met by the purchaser. This figure does not include cooling needed for lights, people, or other equipment in the room.However, operator and patient comfort may be optimized if the room light is subdued and indirect. Keep in mind that lighting controls and dimmers can be a source of EMI which could degrade image quality. These controls should be selected to minimize possible interference Electrical Requirements NOTE: GE Healthcare requires a dedicated power and ground for the proper operation of its Ultrasound equipment. This dedicated power shall originate at the last distribution panel before the system. The dedicated line shall consist of one phase, a neutral (not shared with any other circuit), and a full size Ground wire from the distribution panel to the Ultrasound outlet. To avoid circuit overload and possible loss of critical care equipment, make sure you DO NOT have any other equipment operating on the same circuit Site Power Outlets A dedicated AC power outlet must be within reach of the unit without extension cords. Other adequate outlets for the external peripherals, medical and test equipment needed to support this unit must also be present within 1 m (3.2 ft.) of the unit. Electrical installation must meet all current local, state, and national electrical codes Main Power Plug The LOGIQ S7 ultrasound system is supplied with a main power plug, as standard. In the event that the unit arrives without a power plug, or with the wrong plug, contact your GE dealer. When necessary, the installation engineer will supply the appropriate power plug to meet the applicable local regulations. Chapter 2 - Site Preparation 2-3 56 GE HEALTHCARERAFT EMI Limitations Ultrasound systems are susceptible to Electromagnetic Interference (EMI) from radio frequencies, magnetic fields, and transients in the air or wiring. Ultrasound machines also generate EMI. However, there is no guarantee that interference will not occur in a particular installation. NOTICE Possible EMI sources should be identified before the unit is installed.!! NOTICE: Electrical and electronic equipment may produce EMI unintentionally as the result of a defect. Details Keep the unit at least 5 meters (16.4 feet) away from other EMI sources. Special shielding may be required to eliminate interference problems caused by high frequency, high powered radio or video broadcast signals. Poor grounding is the most likely reason a unit will have noisy images. Check grounding of the power cord and power outlet. After you finish repairing or updating the system, replace all covers and tighten all screws. Any cable with an external connection requires a magnet wrap at each end. Install the shield over the front of card cage. Loose or missing covers or RF gaskets allow radio frequencies to interfere with the ultrasound signals. Replace broken RF gaskets. If more than 20 or a pair of the fingers on an RF gasket are broken, replace the gasket. Do not turn ON the unit until any loose metallic part is removed and replaced, if required. Do not place labels where RF gaskets touch metal. Use GE- specified harnesses and peripherals. Take care with cellular phones. Properly dress peripheral cables. Never place a label where RF gaskets meet the unit. Otherwise, the gap created will permit RF leakage. In case a label has been found in such a location, move the label to a different, appropriate location. The interconnect cables are grounded and require ferrite beads and other shielding. Cable length, material, and routing are all important; do not make any changes that do not meet all specifications. Do not allow cables to lie across the top of the card cage or hang out of the peripheral bays. Loop the excess length for peripheral cables inside the peripheral bays. Begin Pre-installation checks as soon as possible. If possible, allow six weeks before delivery, for enough time to make necessary changes.!! CAUTION: CAUTION Have two people available to deliver and unpack the LOGIQ S7 ultrasound system. Delay, confusion, and waste of manpower can be avoided by completing pre installation work before delivery. Use the Pre-installation checklist (provided in Table 2-7) to verify that all needed steps have been taken. Notify installation team of the existence of any variances from the basic installation. Make sure system and probes have been subject to acclimation period. Environmental cooling is sufficient. Lighting is adjustable to adapt to varying operational conditions of the scanner. Electrical facilities meet system requirements. EMI precautions have been taken and all possible sources of interference have been removed. Mandatory site requirements have been met. If a network is used, IP address has been set for the system and a dedicated network outlet is available. Purchaser responsibility includes: Procuring the materials required. Completing the preparations before delivery of the ultrasound system. Paying the costs for any alterations and modifications not specifically provided in the sales contract. NOTE: All electrical installations that are preliminary to the positioning of the equipment at the site prepared for the equipment must be performed by licensed electrical contractors. Other connections between pieces of electrical equipment, calibrations, and testing must also be performed by qualified personnel. The products involved (and the accompanying electrical installations) are highly sophisticated and special engineering competence is required. All electrical work on these products must comply with the requirements of applicable electrical codes. The purchaser of GE equipment must only utilize qualified personnel to perform electrical servicing on the equipment. The desire to use a non listed or customer provided product or to place an approved product further from the system than the interface kit allows presents challenges to the installation team. To avoid delays during installation, such variances should be made known to the individuals or group performing the installation at the earliest possible date (preferably prior to the purchase). The ultrasound suite must be clean prior to delivery of the machine. Carpet is not recommended because it collects dust and creates static. Potential sources of EMI (electromagnetic interference) should also be investigated before delivery. Dirt, static, and EMI can negatively impact system reliability. Chapter 2 - Site Preparation 2-7 60 GE HEALTHCARERAFT Mandatory Site Requirements The following are mandatory site requirements. A dedicated single branch power outlet of adequate amperage (see Table 2-3 on page 2-3) that meets all local and national codes and is located less than 2.5 m (8.2 ft) from the unit s proposed location. Clean and protected space for storage of probes (either in their case or on a rack). Material to safely clean probes (performed using a plastic container, never metal). Power outlet and place for any external peripheral are within 2 m (6.5 ft.) of each other with peripheral within 1 m of the unit to connect cables. In case of network option: An active network outlet in the vicinity of the ultrasound unit. A network cable of appropriate length (regular Pin-to-Pin network cable). An IT administrator who will assist in configuring the unit to work with your local network. A fixed IP address is required. Refer to the form provided in Figure 3-37 on page 3-59 for network details that are required. NOTE: All relevant preliminary network port installations at the prepared site must be performed by authorized contractors. The purchaser of GE equipment must utilize only qualified personnel to perform servicing of the equipment Site Recommendations The following are (optional) site recommendations. Mandatory site requirements are provided in the Mandatory Site Requirements section, above. Door opening of 90 cm (3 ft) in width. Accessible circuit breaker for a dedicated power outlet. Sink with hot and cold running water. Receptacle for bio hazardous waste, for example, used probe sheaths. Emergency oxygen supply. Storage area for linens and equipment. Nearby waiting room, lavatory, and dressing room. Dual level lighting (bright and dim). Lockable cabinet for software and manuals. 2-8 Section Facility Needs 61 GE HEALTHCAREDRAFT Recommended Ultrasound Room Layout Figure 2-1 below shows a floor plan illustrating the recommended layout of the Ultrasound Room and depicting the minimal room layout requirements. Examples of DICOM services include the transfer of images to workstations for viewing or transferring images to remote printers. As an added benefit, transferring images in this manner frees up the onboard monitor and peripherals, enabling viewing to be done while scanning continues. IP addresses for default gateway and other routers in use at site. DICOM Application Information: Details of DICOM devices in use at the site, including the DICOM host name, AE title, DICOM port number and IP addresses. Included are procedures to receive, unpack and configure the equipment. A worksheet is provided (see: page 3-58 to page 3-59) to help ensure that all the required information is available, prior to setup the system. To prevent shock, do not remove any covers or panels. Should problems or malfunctions occur, unplug the power cord. It requires one hour for each 2.5 C increment if it's temperature is below 10 C or above 40 C.!! CAUTION: CAUTION Equipment damage possibility. Turning the system on without acclimation after arriving at site may cause the system to be damaged. Table 3-3 Acclimation Time C F hrs OPIO Position If weight is placed on the OPIO (User Interface) in it s extended position the console could tip over.!! WARNING:!! WARNING: WARNING WARNING The system should NOT be moved with the OPIO (User Interface) extended. Move the OPIO to it s centered and locked position. Two people should unpack the unit because of its weight. Two people are required whenever a part weighing 16kg (35 lb.) or more must be lifted. If the unit is very cold or hot, do NOT turn on its power until it has had sufficient time to acclimate to its operating environment. To prevent electrical shock, connect the unit to a properly grounded power outlet. DO NOT use a three to two prong adapter. This defeats safety grounding. DO NOT wear the ESD wrist strap when you work on live circuits and more than 30 V peak is present. DO NOT use a 20 Amp to 15 Amp adapter on the 120 Vac unit s power cord.