| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. ELECTRICAL SUPPLY AND DISTRIBUTION | |||
| A1 | Main electrical supply to lift machine room Acceptance: Supply voltage ±10%; three-phase balanced; no neutral shift; earthing resistance ≤ 5 Ω | Cl. 12.1 — Electrical supply per design specification | OK NC NA HOLD |
| A2 | Main isolation switch and circuit breaker Acceptance: Switch rated for motor current; clearly labeled; accessible within 1.0 m; trips at 1.5× rated current | Cl. 12.2 — Safety disconnect required | OK NC NA HOLD |
| A3 | Earthing and bonding of electrical equipment Acceptance: Earthing resistance ≤ 1 Ω per IS 3043; bonding jumpers ≥ 6 mm² copper | Cl. 12.3 — All exposed metal must be earthed | OK NC NA HOLD |
| A4 | Power cable sizing and insulation Acceptance: Cable size per design; voltage drop ≤ 3%; insulation color-coded; sheath intact | Cl. 12.4 — Cable rated for motor load | OK NC NA HOLD |
| A5 | Conduit and cable tray installation Acceptance: Conduit clipped every 1.0 m; no sharp bends; bends ≥ 6× cable diameter; adequately supported | Cl. 12.5 — Cable protection required | OK NC NA HOLD |
| B. MOTOR AND DRIVE SYSTEM | |||
| B1 | Motor nameplate and specifications Acceptance: Nameplate visible; capacity in kW matches design; insulation class ≥ F; frame size confirmed | Cl. 13.1 — Motor must match design | OK NC NA HOLD |
| B2 | Motor mounting and alignment Acceptance: Bolts torqued; no vibration; coupling alignment ≤ 0.5 mm runout; sheave/brake assembly secure | Cl. 13.2 — Motor base must be rigid | OK NC NA HOLD |
| B3 | Brake system operation and adjustment Acceptance: Brake engages when power off; holding torque ≥ 1.5× full load; manual release functional; clearance ≤ 0.5 mm | Cl. 13.3 — Brake prevents unintended motion | OK NC NA HOLD |
| B4 | Pulley/sheave condition and alignment Acceptance: Groove dimensions per design; no corrosion; groove depth tolerance ±1 mm; concentricity ≤ 0.5 mm | Cl. 13.4 — Pulley geometry critical for rope grip | OK NC NA HOLD |
| C. CONTROL AND SAFETY ELECTRICAL SYSTEM | |||
| C1 | Control panel installation and labeling Acceptance: Single-line diagram posted; all controls labeled; IP rating ≥ IP44; ventilation adequate | Cl. 14.1 — Control panel must be properly designed | OK NC NA HOLD |
| C2 | Call push buttons and landing buttons Acceptance: Buttons color-coded; up/down clearly marked; momentary contact; return to neutral smoothly | Cl. 14.2 — Buttons must be clearly marked | OK NC NA HOLD |
| C3 | Emergency stop and alarm systems Acceptance: E-stop button accessible from pit and car; alarm button functional; audible alarm ≥ 85 dB; backup power for alarm | Cl. 14.3 — Emergency systems critical for safety | OK NC NA HOLD |
| C4 | Door sensor and limit switches Acceptance: Sensors installed on all doors; continuity tested; no movement when door sensor triggered | Cl. 14.4 — Sensors prevent operation with open doors | OK NC NA HOLD |
| C5 | Governor speed switch setting and testing Acceptance: Trip speed set to 115–120% of rated speed; tested with no-load run; smoothly engaging | Cl. 14.5 — Governor speed limit set per design | OK NC NA HOLD |
| C6 | Lighting and emergency lighting Acceptance: Car lighting ≥ 50 lux; pit lighting ≥ 30 lux; emergency light ≥ 10 lux; battery backup functional | Cl. 14.6 — Adequate illumination required | OK NC NA HOLD |