Panel Testing - Cold Check

SECTION 1: COLD CHECK PROCEDURE (POWER OFF)

SAFETY REQUIREMENTS

⚠️ WARNING: Ensure ALL power sources are disconnected before beginning cold checks:

• Verify with multimeter that panel is de-energized

EQUIPMENT REQUIRED

• Wear appropriate PPE (safety glasses, insulated gloves)
• Digital Multimeter with continuity function
• Wire strippers/cutters
• Screwdrivers (flathead and Phillips)
• Label maker or tape for wire identification
• Flashlight
• Copy of wiring diagrams

COLD CHECK STEP-BY-STEP INSTRUCTIONS

1. Power Isolation

   • Turn OFF circuit breaker CB supplying 120VAC to panel
   • Verify 120VAC is OFF using multimeter
   • Verify 24VAC power supply is de-energized

2. Preparation

   • Identify terminal blocks TB-1 and TB-2
   • Have wiring diagrams readily accessible
   • Prepare multimeter and set to continuity mode (Ω)

3. Continuity Testing Procedure + Tug Test

   • For each point in the Cold Check Table: a. Locate the field device listed in the “Field Device” column b. Identify the wire terminal at the field device c. Tug on each side of the cable to ensure proper connection c. Place one multimeter probe on the field wire at the device end d. Place other multimeter probe on the corresponding panel terminal listed e. Check for continuity (multimeter should beep or show low resistance <10Ω) f. Record PASS if continuity exists g. Record FAIL if no continuity (no beep or high resistance) h. Document specific issues in Notes column

4. Wire Verification

   • Verify correct wire gauge matches drawing specification
   • Check shielded cables have shields properly grounded
   • Inspect wire insulation for damage
   • Verify wire colors match drawing specifications

5. Common Issues to Check

   • Loose terminations at either end
   • Broken or damaged wires
   • Incorrect wire routing
   • Missing shield ground connections
   • Wrong wire gauge used
     • 18AWG - Control Wiring Terminals
     • 14AWG - Power Wiring Terminals