WALMART MAINTENANCE Equipment Troubleshooting 4

Question 1

A shopping cart retriever vehicle suddenly stops moving forward while in retrieval mode. The first diagnostic step is:

Accepted Answer

Check battery charge and safety cut-off switches

Answer

Battery state and safety cut-off switches are the most frequent causes of sudden drive loss on electric cart retrievers.

Question 2

An auto-scrubber dispenses solution but the recovery squeegee leaves water on the floor even after adjustment. The next step is:

Accepted Answer

Inspect recovery hose for clogs or kinks

Answer

If squeegee adjustment did not help, a blocked or kinked recovery hose prevents suction from lifting water off the floor.

Question 3

A stretch-wrap machine applies film that tears repeatedly mid-wrap. The technician should first check:

Accepted Answer

Film tension settings and film roll core seating

Answer

Excessive film tension or an improperly seated film roll are the primary causes of film tearing during stretch-wrap cycles.

Question 4

A walk-in cooler evaporator fan runs but the cooler temperature rises above set point. What is the most likely culprit?

Accepted Answer

Evaporator coil frost buildup blocking airflow

Answer

Frost accumulation on the evaporator coil insulates it and blocks airflow, drastically reducing cooling capacity even when the fan runs.

Question 5

A powered scissor lift platform rises but will not lower with the down control activated. The likely cause is:

Accepted Answer

Faulty lowering solenoid valve or stuck control relay

Answer

If the lift rises normally but won't lower electrically, the lowering solenoid valve or its control relay is typically the fault.

WALMART MAINTENANCE Practice Test