Question 81General Subjects - 1st Asst/Chief
70% to passWhen securing a flash-type evaporator for an extended period of time, you should _______________.
Acompletely drain the unit
Btightly seal the unit to exclude air
Cfill the unit with saltwater
Dfill the unit with descaling compound
AI Explanation
The correct answer is A) completely drain the unit. When securing a flash-type evaporator for an extended period, it is important to completely drain the unit to prevent damage from corrosion and mineral buildup. Leaving water or brine in the evaporator can lead to scaling and fouling, which can impair the unit's performance when it is restarted. Draining the system ensures that no residual liquid remains to cause problems during the downtime. The other options, such as sealing the unit or filling it with saltwater or descaling compound, are not the proper procedures for securing a flash-type evaporator for extended periods.
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