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General Maintenance/ boma 1. When Starting a centrifugal pump That is part of a manifold with no check valves: You should open the suction valve, start the pump and open the discharge valve slowly $10.49
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General Maintenance/ boma 1. When Starting a centrifugal pump That is part of a manifold with no check valves: You should open the suction valve, start the pump and open the discharge valve slowly
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  • Boma HVAC
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  • Boma HVAC

General Maintenance/ boma 1. When Starting a centrifugal pump That is part of a manifold with no check valves: You should open the suction valve, start the pump and open the discharge valve slowly

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  • October 29, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • general maintenance boma 1 when starting a centr

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  • Boma HVAC
  • Boma HVAC

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Millard

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General Maintenance/
boma
1. When Starting a centrifugal pump That is part of a manifold with no check valvesANS
You should open the suction valve, start the pump and open the discharge valve slowly
2. Curb cockANS
A Valve insert it in a water line between the corporation stop and the water meter is generally called
3. To check sheave wearANS
Measure each groove angle
4. Variable pitch sheaves may be used in some cases to provide which of the following types of speech
changesANS
Small
5. Absolute pressure is GaugeAN
Pressure plus 14.7 psi
6. Which of the following best describes the basic types of sprinkler systems in a buildingANS
Standard wet type system, Standard dry type system, deluge system ( all of the above)
7. Power equalsANS
Force times distance divided by time
8. Torches should be inspected for leakage at theANS
Tip, valves, hose connections all of the above
9. Smoke detection is usually accomplish by using either photo electric scan- ning, ionization chambers or
smoke deflection devices?ANS
True
10. If a coupling is not properly alignedANS
It will almost certainly fail more quickly than his should & it could wear out equipment bearings A&C
11. To protect a pump and motor against slight misalignment, they are often connected by aANS
Flexible coupling
12. The coding on a metallic electrodeANS
Stabilizes the arc and controls oxidation
13. When severing a length of 2 inch pipe it is preferable to useANS
A pipe cutter
14. What is the main purpose of the emergency electrical power systemANS
Run equipment essential to human life for safety
15. Baffles in a greased interceptor reduce within interceptorANS
-
Turbulence
16. Parallel alignment isANS
Where the centerline of the two shafts are parallel
17. Usually if the motor in the system feels hot and you think this is over- loading, you should not open the
flow valve further becauseANS
Increase flow will usually increase horse power requirements
18. Which of the following alarms will start a diesel fire pumpANS
Waterflow alarm
19. What term best describes water use for both drinking and cookingANS
Potable
20. Gate valvesANS
1/
10

, General Maintenance/
boma
Have less pressure dropped than most other kinds of valves, Are available to quick opening models A&B
21. Critical points of a grease interceptor or elevations of the and
in to the waterANS
InletANS
outlet
22. One of the most positive means of preventing back siphonage is the proper use of anANS
Air gap




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