If a low-pressure chiller's high-pressure limit control trips during operation, the technician should first:
a.Bypass the control to finish the job
b.Investigate the cause before resetting
c.Raise the rupture-disk setting
d.Reset it and keep running the machine
解析
A tripped limit control is a warning that should be investigated, since it may signal non-condensable buildup, water intrusion, or another fault. Simply resetting or bypassing a safety control hides the real problem and is unsafe. Never alter or bypass the rupture disk or limit devices.
免费刷完整 240 道题库 — 无需注册。
Own the complete EPA Section 608 Certification guide — PDF + EPUB, $14.99 →
同考点相关题目
- Compared with older designs, a high-efficiency purge unit is desirable because it:
- A technician wants to warm the refrigerant in a low-pressure chiller to speed recovery. Which method is acceptable?
- Low-pressure chillers most commonly use which type of compressor?
- When recovering from a low-pressure chiller with a large charge, the most efficient practice is to:
- The rupture disk on a low-pressure appliance should be:
- A device that automatically maintains the correct refrigerant level between the condenser and evaporator of a low-pressure chiller is the:
最近核对： · 审核流程
PrepPass 团队 · 依据官方资料核对 EPA Section 608 Technician Certification Exam · 我们如何核对