UL 982 Figure 58.7 PA145 Standad Test Finger Probe

Product No: SMT-PA145

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Description

The PA145 UL Standard Test Finger Probe (UL 982 compliant) is a specialized safety tool designed for household refrigerators, freezers, and ice-making appliances. It simulates human finger access to verify if hazardous live parts (e.g., internal wiring, compressor components) or moving mechanisms (e.g., fan blades) remain inaccessible. Featuring a rigid stainless steel “finger” for consistent testing and an insulating nylon handle for tester safety, it applies a precise 10N thrust to mimic real-world accidental contact. Strictly aligned with UL 982’s requirements, it’s durable, dimensionally stable, and critical for manufacturers to ensure appliance safety and meet U.S. market compliance.

Standards:

Standards No.	Clause/Figure	Standards Name
UL 982:2023	Clause 58.4, Figure 58.4	Standard for Safety for Household Refrigerators and Freezers – Including Ice Makers
UL 60335-2-24:2023	Clause 11.6 (References UL 982 PA145 Test Finger)	Standard for Safety for Household and Similar Electrical Appliances – Part 2-24: Specific Requirements for Refrigerating Appliances, Ice-Cream Makers and Ice Makers
UL 60745-2:2023	Clause 10.2	Standard for Safety for Hand-Held Motor-Operated Electric Tools – Part 2: Specific Requirements for Drills and Impact Drills

Specifications:
Probe Type: PA145 UL Standard Test Finger Probe (UL 982 compliant for refrigeration appliances)
Finger Material: Stainless steel (rigid, corrosion-resistant, maintains dimensional accuracy under 10N thrust)
Handle Material: Nylon (fully insulating, heat-resistant, non-slip for secure grip during testing)
Key Dimensions:
– Finger Diameter: 12 mm ± 0.1 mm
– Effective Finger Length: 80 mm ± 0.2 mm
– Total Length (Finger + Handle): 180 mm ± 0.5 mm
– Finger Tip: Hemispherical, radius 6 mm ± 0.05 mm (smooth to avoid appliance enclosure damage)
Applied Thrust: 10N ± 0.5N (simulates moderate accidental finger pressure on appliance openings)
Core Function: Verifies inaccessibility of hazardous live/moving parts in household refrigeration appliances per UL standards

Test Procedures:
1. Inspect the test finger for damage (e.g., bent stainless steel body, cracked nylon handle) to ensure accuracy.
2. Power on the refrigerator/freezer and activate all functions (cooling, ice-making if applicable) to reach normal operation.
3. Hold the insulating handle and align the finger tip with appliance access points (e.g., door gaps, vent slits, ice dispenser slots).
4. Apply steady 10N thrust to the finger toward internal components.
5. Check if the finger touches any hazardous parts (e.g., live wires, moving fans).
6. Record whether the appliance meets safety requirements (pass/fail).

Applications:
1. Safety testing of household frost-free refrigerators (per UL 982:2023 Clause 58.4) to block finger access to compressor wiring.
2. Compliance checks for upright/chest freezers to ensure moving fan blades remain inaccessible (UL 60335-2-24:2023).
3. Verification of standalone residential ice makers (built-in or countertop) for U.S. market safety compliance.
4. Quality control for embedded kitchen refrigerators during manufacturing.
5. Post-production audits of compact refrigerators (e.g., dorm or RV models) to meet UL 982 standards.