Which of these tasks should be done during a yearly trap inspection
1. The trap body and operating parts should be examined for corrosion, erosion, mechanical wear, etc.
2. All internal parts should be cleaned and worn valves, seats, levers, etc. , should be replaced as should cracked buckets, floats or bellows
3. Check trap housing temperature
4. All gasket seating surfaces should be thoroughly cleaned and new gaskets used on assembly
a) 1, 2, 3, 4
b) 1, 2
c) 1, 2, 4
d) 1, 2, 3
e) 2, 3, 4
Answer: C