| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. GUIDE RAIL INSTALLATION | |||
| A1 | Guide rail straightness and verticality Acceptance: Straightness error ≤ 1 mm/m; verticality ≤ 1:500; measured with level | Cl. 6.2 — Rails must be straight and vertical | OK NC NA HOLD |
| A2 | Rail bracket spacing and alignment Acceptance: Bracket spacing 2–4 m as designed; center-to-center ±10 mm; all aligned in one plane | Cl. 6.3 — Bracket spacing per design | OK NC NA HOLD |
| A3 | Rail joint alignment and gaps Acceptance: Joint gap 3–5 mm; no step; rails aligned within 1 mm vertically and laterally | Cl. 6.4 — Joint alignment critical for car movement | OK NC NA HOLD |
| A4 | Rail surface condition and lubrication Acceptance: Surface free of rust, burrs, debris; light machine oil coating present | Cl. 6.5 — Running surfaces must be smooth | OK NC NA HOLD |
| A5 | Counterweight guide rails (if applicable) Acceptance: Same tolerances as car guide rails; properly supported at 4 m intervals | Cl. 6.6 — Counterweight rails equally critical | OK NC NA HOLD |
| A6 | Rail fastening bolts and lock nuts Acceptance: Bolts torqued to specification; lock nuts secure; no corrosion; torque wrench used | Cl. 6.3.1 — Secure fastening required | OK NC NA HOLD |
| B. CAR FRAME AND STRUCTURE | |||
| B1 | Car frame squareness and dimensions Acceptance: Diagonals equal ±10 mm; frame dimensions ±5 mm of design | Cl. 7.1 — Car frame must be square and rigid | OK NC NA HOLD |
| B2 | Car guide shoe assembly installation Acceptance: Shoes centered on rails; 2–3 mm clearance; springs functioning; no binding | Cl. 7.2 — Guide shoes must engage rails properly | OK NC NA HOLD |
| B3 | Guide shoe wear blocks condition Acceptance: Wear blocks present and intact; no cracks; composite material acceptable | Cl. 7.3 — Wear blocks protect rails and shoes | OK NC NA HOLD |
| B4 | Car door frame alignment and operation Acceptance: Door slides freely; no binding; hinges secure; alignment ±2 mm | Cl. 8.1 — Door must open/close smoothly | OK NC NA HOLD |
| B5 | Counterweight frame and suspension Acceptance: Frame square and level; suspension ropes/chains secure; balanced loading | Cl. 9.1 — Counterweight frame must be rigid | OK NC NA HOLD |
| C. ROPE AND SUSPENSION SYSTEM | |||
| C1 | Traction rope installation and condition Acceptance: Rope diameter per design; ends properly terminated; no kinks or damage; inspection certificate | Cl. 10.1 — Ropes must be correctly sized and installed | OK NC NA HOLD |
| C2 | Rope equalizing sheave function Acceptance: Sheave rotates freely; alignment ±2 mm; bearing no play; rope runs centered | Cl. 10.2 — Sheave alignment critical for even loading | OK NC NA HOLD |
| C3 | Compensation rope (if applicable) Acceptance: Rope diameter and length per design; securely anchored; no slack; smooth operation | Cl. 10.3 — Compensation ensures car/counterweight equilibrium | OK NC NA HOLD |
| C4 | Rope pulley and sheave bearing condition Acceptance: No play in bearings; smooth rotation; properly lubricated; no corrosion | Cl. 10.4 — Bearings must be free-moving | OK NC NA HOLD |