Eight key points for mechanical equipment installation acceptance (Source: Installation & Commissioning Guidelines / Acceptance Standards): ① Foundation acceptance (concrete/anchor bolts); ② Levelness (precision: 0.1mm/m); ③ Electrical systems (voltage ±10%/phase sequence/grounding); ④ Safety circuits (emergency stop/interlocks); ⑤ Piping (hydraulic/pneumatic pressure testing); ⑥ Trial run (no-load/loaded); ⑦ Technical documentation (drawings/program backups); ⑧ Trial production (volume runs and spot checks per contract)—installation acceptance is the critical final step in getting the equipment operational.
I. Foundation and Anchor Bolts
Foundation strength: Concrete load-bearing capacity ≥ 1.25 times the equipment weight (Source: Zeus);
Flatness: Foundation surface must be flat (rejection if settlement > 0.1mm); Anchor bolts: Tighten according to the manufacturer’s torque sequence diagram (random “star pattern” tightening is prohibited; Source: Flow Machinery); Shims: U-shaped shims must ensure full contact (single-point shimming is prohibited); Grouting: Grout only after leveling is verified—a substandard foundation is the source of equipment vibration (inspect the foundation before installing the machine).
II. Leveling and Alignment
Leveling: Precision equipment ≤0.1 mm/m; general equipment ≤0.2 mm/m (Source: Oxmaint); Measurement: Precision level/laser level (record readings at X/Y axis points); Alignment: Motor-to-machine coupling alignment (laser alignment tool); Belts/Chains: Tensioning per specifications; Soft Foot: Check shim contact (prevent deformation due to soft foot)—improper leveling leads to precision drift (critical for machining equipment).
III.
Electrical Acceptance
Voltage: Incoming voltage within ±10% of rated value (Source: Oxmaint); Phase Sequence: Verify three-phase sequence (prevent reverse rotation); Grounding: Frame grounding continuity (grounding resistance meets standards); Insulation: Measure motor/cable insulation resistance (Source: IMARC); Cables: Tighten terminals/clear labeling (prevent overheating from loose connections); Protection: Match fuse/circuit breaker settings—electrical non-compliance means no power-up (test insulation before closing the breaker).
IV.
Safety Circuits
Emergency Stop: Accessible and functional at every operator station; Interlocks: Safety gate/guard interlocks (machine stops when opened); Light Curtains: Response to obstruction; Overload Protection: Calibration of overload protection; Warnings: Warning labels/safety signage—verify safety circuits before powering up (Source: SEA; test E-stop before operation).
V. Piping and Hydraulics
Hydraulics: Piping pressure test (test pressure at 1.5x rated value); Pneumatics: Leak check on air lines; Cooling Water: Clear flow/no leaks; Lubricating Oil: Oil circuits/levels/quality; Connections: Correct piping routing (follow drawings, do not rely on memory)—piping leaks pose a risk of downtime (perform pressure testing before commissioning).
VI.
Trial Run
No-load: Run for 30 minutes without load (at rated voltage and frequency); Monitoring: Vibration (ISO 10816-3)/temperature/noise/current (no-load current at 25–40% of rated value); Load: Incremental loading at 25%/50%/75%/100%; Recording: Operational data at each stage; Abnormalities: Immediate shutdown upon unusual noise, overheating, or alarms—use incremental loading (jumping straight to full load carries high risk).
VII.
Technical Documentation
Document List: Manuals/drawings/backup of electrical program parameters/spare parts list/maintenance manual; Program Backup: On-site verification of PLC program functionality; Training: Records of operation and maintenance training; As-built Drawings: Installation as-built drawings (actual routing of piping/electrical lines)—rectify any missing documentation before final acceptance (lost program backups leave maintenance personnel helpless).
VIII. Trial Production
Formal Trial Run: Operate for the duration and output volume specified in the contract; Spot Checks: Inspect product dimensions, appearance, and functionality; Capacity Verification: Ensure actual capacity and cycle times meet standards; Sign-off: Both parties sign to confirm trial production results;
Outstanding Items: List required rectifications and deadlines—sign the acceptance form only after successful trial production (acceptance form marks the start of the warranty period).
IX. Key Points
First, foundation before equipment (no equipment installation if the foundation is substandard); second, electrical systems before operation (verify insulation, phase sequence, and grounding first); third, safety before production (test emergency stops and interlocks first); fourth, data and program backups (complete any missing items);
fifth, trial production sign-off (sign only after meeting contractual output requirements)—Mechanical equipment installation acceptance involves eight stages: Foundation → Leveling → Electrical → Safety → Piping → Trial Run → Documentation → Trial Production (acceptance at each stage; sign-off required for validity).
