Textbook Assignment: Advanced Base Functional Components (ABFC) (continued),
chapter 2, pages 2-1 to 2-37.
QUESTIONS 2-1 THROUGH 2-4 REFER
TO THE PORTABLE BATH UNIT.
2-1. After performing all before operation
PMCS, you are preparing the unit for
use. Of the following steps, which one
is NOT correct?
Open the blower shutter
Ensure the water heater drain cock
Make sure the manual fuel valve is
Check all waterlines to ensure they
2-2. After you have the unit on line, the fuel
pressure gauge should indicate what
amount of pressure?
1. 120 psi
2. 110 psi
3. 100 psi
4. 90 psi
After start-up, the exhaust gases from
the stack should be transparent and
smokeless. What should be done when
smoke is present?
1. Open the air band on the blower
assembly slowly until the exhaust
gases are transparent
2. Adjust the electrodes and check for
3. Clean the burner firebox and stack
4. Check the fuel lines for
2-4. When there is a danger of freezing, you
should perform which of the following
Open the drain cock to the heater
Open the drain cock on the water
Disconnect and drain all water
All of the above
IN ANSWERING QUESTIONS 2-5
THROUGH 2-10, REFER TO TABLE 2-1
IN THE TEXTBOOK.
A water pump fails to deliver water.
To locate the problem, you should take
Check the pump shaft seals for leaks
Check the blower for an obstruction
Ensure the solenoid valve activates
Ensure the strainer cover is not too
fuel pump is noisy. What is the
most likely problem?
1. The pump rotation is reversed
2. The fuel filter is clogged or dirty
3. The fuel nozzle is defective
4. The flame-safeguard control switch