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What problems can occur if the condenser fan stays off too long?

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Question added by Basharat Ali , Mechanical supervisor , FCC
Date Posted: 2015/07/11
magdy abd al nour
by magdy abd al nour , HVAC Site manger , First United Co.

the condenser pressure will increase and that is overload on the compressor...

Afsar zaman
by Afsar zaman , MECHANICAL ENGINEER , Al Mariah United Group

In this case the high pressure will increase and compressor will shutdown  if the high pressure switch is ok. Otherwise the compressor parts will damage.

Muhammad Arsalan Siddiqui
by Muhammad Arsalan Siddiqui , Senior Mechanical Engineer , Omrania and Associates

the coil for the outdoor will not work and may be damaged and cooling will not occur.

Eduardo Hipolito
by Eduardo Hipolito , ELV & Electrical Plant Engineering Coordinator , Leonardo-Tender

There will be an increase of temperature in the system since the refrigerant will not be cooled. Thus, high pressure switch will activate to protect the compressor from damage.

Muhammad Umair Moiz
by Muhammad Umair Moiz , Utility Engineer , Ismail Industries Limited

High pressure switch will operate. It is better to use Thermostat, sensing discharge temperature of compressor. It will provide extra safety in case pressure switch fails by any means.

Deleted user
by Deleted user

1) Pressure increase inside the condensing system.

2) Over heating of the compressor which might damage the compressor if the high pressure switch is not functioning.

sameh shahat
by sameh shahat , Site Engineer , PROJECT BUILD CO.

in case of unit working

1. discharge pressure will increase .

2.compressor will stop by high pressure device . 

moa'th rababa'h
by moa'th rababa'h , Sr. mechanical engineer , JET - Contacting

pressure will increased & compressor will stop

Vladimir Voloshin
by Vladimir Voloshin , Engineer HVAC & SR , Self employed

System pressure and temperature will increase utill safety high pressure switch stops compressor

ARIEL CANTERO
by ARIEL CANTERO , Mechanical Cost Estimation , ARKAD ENGINEERING AND CONSTRUCTION CO.

The refrigerant Hot liquied will not be cooled, thus it will not help for a good conditioning operation.

Abdulrahman Salih
by Abdulrahman Salih , Utilities Team Leader , Alsafi Danone

Its depends, 

 

Do you mean during running condition ? or you mean that the condenser will be off for long time so because of that the fan will be off?

 

If its 1st case : the presure will increase, plus there will be no cooling down throu the fans, in this case, your compressor protection should detect that and compressor should go to (Breakdown).

 

 

If its 2nd case, few things you need to take care about:

 

1. empty the system from the fluied.

 

2. Check the Belt condition before you run the condenser.

 

3. Dont forget about the greasing which is very important, this could effect your fans motor condition.

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