Chiller troubleshooting

Chiller troubleshooting

University

12 Qs

quiz-placeholder

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Chiller troubleshooting

Chiller troubleshooting

Assessment

Quiz

Physics

University

Practice Problem

Hard

NGSS
HS-PS3-4

Standards-aligned

Created by

Robert Hemmila

Used 4+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You are looking at a low pressure chiller and the chiller condenser barrel approach temperature has gradually increased to 9 degrees over a time period of 4 months on a 3 pass evaporator the likely cause is?

The cooling tower fan is not running up to speed.

The sump on the tower needs cleaning.

The chiller condenser barrel has built up with contaminants and needs cleaned.

The condenser water pump is running too slow causing an increased approach.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

High pressure chillers utillizing screw compressors require what because of the high refrigerant flow?

Oil separator

High pressure safety

Flow diversion valve

Electronic expansion valve

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Screw compressors control capacity with?

Suction valve lift

Suction solenoid valve

Slide valve

Inlet vanes

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Screw compressors are used on low pressure chillers.

True

False

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A high pressure chllier locked out on High pressure safety open a likely cause could be?

Dirty chiller barrel

Dirty condenser coil

Low water flow on the evaporator

Low refrigerant charge

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the fan on the cooling tower fails what is likely to happen to the range of the cooling tower?

It will increase but the approach will decrease

It will decrease and the approach will increase

It will increase and the approach will increase

It will decrease and the approach will decrease

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The flow switch interlock is designed to?

start the pump on the chiller

stop the chiller if water flow is not present

start the chiller when water flow starts

stop the chiller when water flow starts

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