5.4 Machine Malfunctions, Error Signs, Inspection, and Maintenance Reporting

Machine Malfunctions, Error Signs, Inspection, and Maintenance Reporting

Quick Summary: Abnormal noise, burning odor, smoke, severe vibration, leaks, or an unexpected stop can signal equipment trouble. The safe response depends on the hazard and the machine's procedure: stop work, use the emergency stop when immediate danger requires it, keep clear of hazardous energy, prevent unauthorized restart, and report the observed symptoms. Do not dismantle or bypass safeguards unless trained, authorized, and following the energy-control procedure.

1. Catalog of Equipment Malfunction Symptoms

When a machine begins to fail, it gives off sensory signals before catastrophic failure occurs. The EPS-TOPIK evaluates candidates on their ability to comprehend and speak these symptom descriptions.

Sensory Symptoms of Machine Trouble

2. A Safe Response Pattern for Abnormal Equipment

The exact shutdown and isolation steps are machine-specific. For an immediate hazard, a common response pattern is to stop, keep hands clear, prevent restart, and report; follow the posted procedure and supervisor or safety instructions.

[ STEP 1: 정지 (Stop Safely) ]
  └─> Use the emergency stop for immediate danger; otherwise follow the normal or emergency shutdown procedure.

[ STEP 2: 임의 조작 금지 (No Unauthorized Repairs) ]
  └─> Never stick hands inside; do not use hand tools to dismantle machinery independently.

[ STEP 3: 즉시 관리자 보고 (Report to Supervisor) ]
  └─> Verbally report machine ID, symptoms, and shutdown status to 반장님/조장님/관리자 immediately.

Detailed Breakdown of Emergency Steps

1. 1단계: 안전하게 정지하기 (Stop Safely):
   • If there is immediate danger, use the emergency stop and warn nearby workers.
   • Follow the machine-specific shutdown and hazardous-energy isolation procedure. An emergency stop does not by itself remove stored, hydraulic, pneumatic, thermal, or electrical energy.
   • Do not reach into the danger zone or assume motion has stopped merely because a button was pressed.
2. 2단계: 임의 조작 금지 / 절대로 손대지 말기 (Do Not Attempt Unauthorized Tampering):
   • Never, under any circumstances, insert your bare hands into the machine die or cutter bed to dislodge a jammed part! Many workers lose fingers because a jammed press releases stored hydraulic pressure the instant a part is dislodged.
   • General workers are not certified repair technicians (수리 기사). Dismantling motors or bypassing safety interlocks without authorization is strictly prohibited.
3. 3단계: 관리자 및 반장님께 즉시 상황 보고 (Report Immediately to Supervisors):
   • Inform the line supervisor (반장님, 조장님, 생산관리자) without delay.
   • State clearly which machine has broken down, describe the sensory symptoms, and confirm that the power has been killed.

3. Maintenance, Lockout/Tagout, and Repair Terminology

When a machine is undergoing scheduled maintenance or repair, South Korea's safety laws require clear visual signage to prevent another worker from inadvertently flipping the power switch.

Industrial Maintenance Lexicon

[!WARNING] The Meaning of '점검 중 - 조작 금지' (Lockout Tag): If an EPS-TOPIK reading question displays a photograph or illustration of a switch handle with a yellow or red tag reading [점검 중 - 조작 금지], the correct test interpretation is: "기계를 점검하고 있으므로 다른 사람이 전원을 켜서는 안 된다" (Technicians are inspecting the machine; no one must turn on the power). Flipping the switch could electrocute or crush a technician working inside.

4. Linguistic Formulas for Malfunction Reporting to Supervisors

Foreign workers frequently experience anxiety when communicating machine breakdowns. On the EPS-TOPIK, test items evaluate polite, accurate workplace Korean utilizing formal honorific endings (-(으)십시오, -습니다) and speculative grammar forms.

Essential Reporting Grammatical Patterns

1. -(으)ㄴ 것 같다 (It seems that / Appears to be): Used to report sensory observations respectfully without sounding presumptuous.
   • Example: 모터 쪽에서 타는 냄새가 나는 것 같습니다. (It seems that a burning smell is coming from the motor area.)
   • Example: 베어링 부품이 마모된 것 같습니다. (It appears that the bearing component is worn out.)
2. -아/어 보이다 (Appears / Looks like): Used for visual inspection observations.
   • Example: 전원 케이블 피복이 벗겨져 위험해 보입니다. (The power cable sheath is stripped and looks dangerous.)
3. -(으)ㄹ 때 (When / At the time of): Stating the exact moment the breakdown occurred.
   • Example: 절단 버튼을 누를 때 덜덜거리는 진동이 심해집니다. (When I press the cutting button, the shaking vibration becomes severe.)

5. Authentic Workplace Dialogue: Emergency Breakdown Reporting

상황 (Context): 골판지 상자 제조공장에서 포장 결속기 작업을 하던 외국인 근로자 라흐만(Rahman)이 기계에서 타는 냄새와 연기를 발견하고 박 반장님에게 긴급 보고하는 상황입니다. (At a corrugated box factory, foreign worker Rahman detects a burning smell and smoke from the packing strapping machine and reports immediately to Foreman Park.)

라흐만 (Rahman): 반장님! 큰일 났습니다. 지금 2호 포장 결속기에서 이상한 소리가 나더니 모터 밑에서 타는 냄새가 나고 연기가 조금씩 피어오릅니다! (Foreman! We have an emergency. Just now, Machine No. 2 made a strange noise, and now there is a burning smell and smoke billowing up from under the motor!)

박 반장 (Foreman Park): 뭐라구요? 라흐만 씨, 기계 전원은 바로 껐어요? (What? Rahman, did you kill the machine power immediately?)

라흐만 (Rahman): 네! 소리가 나자마자 빨간색 비상정지 버튼을 누르고 메인 배전반 스위치도 완전히 내렸습니다. 손은 절대 대지 않았습니다. (Yes! As soon as the noise occurred, I pressed the red emergency stop button and completely lowered the main breaker switch. I did not touch the machine with my hands at all.)

박 반장 (Foreman Park): 아주 잘했어요! 당황해서 기계 안을 들여다보거나 만지면 화상이나 감전 위험이 있어요. 내가 가서 확인할 테니, 라흐만 씨는 다른 작업자들 접근하지 못하게 하고 스위치에 '점검 중' 표지판부터 걸어두세요. (You did very well! If you panic and look inside or touch it, there is severe risk of burns or electric shock. I will inspect it; Rahman, keep other workers away and hang the 'Under Inspection' sign on the switch immediately.)

라흐만 (Rahman): 알겠습니다. 지금 바로 '점검 중 - 조작 금지' 팻말을 걸고 수리 기사님이 오실 때까지 지키겠습니다. (Understood. I will immediately hang the 'Under Inspection - Do Not Operate' sign and guard the area until the repair technician arrives.)

6. EPS-TOPIK Question Pitfalls & Test Tactics

1. Unauthorized-Repair Distractor: An untrained operator should not dismantle a motor, repair wiring, or bypass a guard. Maintenance must be performed by an authorized person under the applicable energy-control and repair procedure.
2. Delaying Reporting Trap: Options that state "오늘 할당량을 다 채운 후 퇴근 시간에 보고한다" (Reporting at punch-out time after finishing the daily quota) or "내일 아침 조회 시간에 이야기한다" (Talking about it tomorrow morning) are dangerous distractors. Mechanical anomalies require 즉시 보고 (immediate reporting).
3. Negative Form Pitfalls: Pay close attention to negative question prompts such as 기계 고장 시 취해야 할 행동으로 알맞지 않은 것은? (What is NOT appropriate to do during a machine malfunction?). The incorrect action (such as keeping the machine running or touching moving parts) is the correct answer.