Mechanical Commissioning Technician

LotusWorks•Grafton, WI

21h

About The Position

LotusWorks is seeking an experienced Mechanical Commissioning Technician to support testing, verification, and commissioning of mechanical cooling systems and associated controls in a large-scale, mission-critical data center environment. The role supports commissioning from equipment installation verification and startup through functional performance testing, Integrated Systems Testing (IST), and final turnover. It focuses on systems such as chillers, CRAH/CRAC units, cooling towers, pumps, heat exchangers, chilled water and condenser water systems, and associated Building Management Systems (BMS). The technician works alongside Commissioning Engineers, Leads, and Managers to execute testing procedures, document results, troubleshoot deficiencies, verify redundancy, and ensure equipment meets project specifications, safety requirements, and client expectations.

Requirements

Working knowledge of mechanical cooling systems used in data center environments, including chillers, CRAH/CRAC units, cooling towers, pumps, heat exchangers, and chilled water systems.
Understanding of commissioning processes, including L2 installation verification, L3 startup, L4 functional performance testing, and L5 integrated systems testing.
Ability to read and interpret mechanical drawings, equipment specifications, sequences of operation, and testing procedures.
Familiarity with BMS, control sequences, alarms, setpoints, interlocks, and equipment operating parameters.
Understanding of mechanical system redundancy, lead/lag operation, and failover sequences.
Ability to verify equipment performance and identify deficiencies during inspections and testing.
Troubleshooting and problem-solving skills to support deficiency resolution and root-cause investigation.
Ability to accurately document test results, commissioning progress, and deficiency reports.
Strong communication and teamwork skills when coordinating with engineers, contractors, vendors, and clients.
Commitment to site safety procedures, including LOTO and equipment isolation protocols.
Ability to work in a fast-paced, mission-critical data center construction and commissioning environment.
OSHA 10 certification required.

Nice To Haves

Familiarity with commissioning documentation platforms such as CxAlloy or Facility Grid.
Mechanical engineering degree, HVAC-related education, or relevant technical training.
Relevant experience with mechanical systems commissioning, HVAC, or data center cooling infrastructure.

Responsibilities

Support commissioning activities for mechanical cooling systems and associated controls in mission-critical data center facilities across Levels 2–5 (L2–L5).
Perform equipment installation inspections, construction verification, and pre-functional checks.
Assist with equipment startup, OEM testing, functional performance testing (FPT), and Integrated Systems Testing (IST).
Support commissioning of chillers, CRAH/CRAC units, cooling towers, pumps, heat exchangers, and chilled water and condenser water systems.
Verify equipment readiness, operating parameters, temperature, pressure, flow rates, and system performance.
Assist with functional testing of cooling systems, including lead/lag sequences, control responses, and failure recovery.
Verify BMS points, alarms, setpoints, interlocks, control sequences, and equipment communication interfaces.
Witness OEM testing and testing, adjusting, and balancing (TAB) activities.
Support mechanical system redundancy, failover, and recovery testing under normal and abnormal operating conditions.
Document test results, complete commissioning checklists, and track deficiencies using platforms such as CxAlloy or Facility Grid.
Assist with troubleshooting, deficiency resolution, retesting, and final commissioning documentation and turnover.
Follow site safety procedures, including lockout/tagout (LOTO), job hazard analyses, and equipment isolation requirements.
Coordinate daily testing activities with Commissioning Engineers, Leads, Managers, contractors, vendors, TAB technicians, and client representatives.
Perform other duties or responsibilities that may be assigned as part of the role.