Water entering the refrigerant side of a low-pressure chiller through a leaking tube is dangerous mainly because it can:
a.Cause acid formation and corrosion
b.Increase cooling capacity
c.Improve oil return
d.Lower the refrigerant's boiling point
解析
Water that leaks into the refrigerant side reacts to form acids, corrodes metal parts, can freeze and damage tubes, and contaminates the refrigerant. Because the chiller runs under vacuum, a tube leak lets cooling water be pulled inward. Any sign of water intrusion calls for investigation, not just resetting controls.
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
- What is the primary purpose of a purge unit on a low-pressure centrifugal chiller?
- Which of the following is a low-pressure refrigerant used in centrifugal chillers?
- Because a low-pressure chiller operates in a vacuum on the low side, what happens when it develops a leak?
- To speed up refrigerant recovery from a low-pressure chiller, a technician should:
- Frequent operation of the purge unit on a low-pressure chiller is usually a sign that:
- 40 CFR §82.152 classifies appliances by their refrigerant's liquid-phase saturation pressure at 104°F. Which range makes an appliance low-pressure?
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