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Resistance test of temperature sensors in the cooling supply section of the ventilation unit.
A maintenance engineer with a white hard hat is working in the control room of the building's cooling system and holding the blueprint to inspect the process.
Close-up Air conditioner technician hand check  fill refrigerant liquid and maintenance condenser unit, Home care service
Power Generation
Electrical engineers check the operation of the main electrical control panels and switches, record values on tablets, electrician inspect the electrical systems in the factory.
Young offshore professional engineer checking parameters of working engine in engine room. Offshore engineer making checks on running machinery.
A male safety officer is checking the safety of the equipment
Electric power generator set for industrial installations.
The electrical engineer checks and inspects at MDB panel (Main Distribution Board ) in the Substation building, daily and checks the electric switchboard on the Main Distribution Boards of the factory
male caucasian operator operating industrial printing press
female heating maintenance engineer
A distribution system operator checks equipment at an electrical substation. Control panel settings. An electrician works at a power plant. Switch operator in work helmet
A mature man with a thick beard and large build working as a concrete boom pump operator, walking next to a truck, looking at the camera with a serious expression. This is part of a series showing workers operating concrete pump trucks at a construction site.
service engineer worker at industrial compressor refrigeration station repairing and adjusting equipment at manufacturing factory
Close-up of a fire truck's many dials and mechanism for fighting fires
Compressor for cypplying compressed air on the ship
This image captures a young man working in a heating plant, carefully filing important documents
Electric control panel enclosure closeup. An electrical voltage.
Aero mechanic standing near jet and pointing at engine part, mid shot. Engineer holding clipboard with papers, side view
Electrical engineer check the operation of the main electrical control panels and switches, record values on tablets, electrician inspect the electrical systems in the factory.
Young engineer working on electrical equipment using safety procedures
Electric motor
From below of crop anonymous firefighter in uniform with colorful lines and protective glasses with helmet taking black hose of manual pump while standing near fire truck. Fire extinguishing concept
Industry expert monitoring machinery
One man, professional key cutter, making car keys copies on modern machine.
service engineer worker at industrial compressor refrigeration station repairing and adjusting equipment at manufacturing factory
New single phase pole mounted distribution transformers.
Marine engineer officer in engine control room ECR. Seamen's work. He starts or stops main engine of ship
Young Man Controlling Heating Plant
Free Images: "bestof:Navy 110315-N-4392R-110 Gas Turbine System Technician (Electrical) Fireman William Cochran, left, and Gas Turbine System Technician (Mechanical).jpg en"
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