Application Book: Heating Solutions for All Industries | Page 24
PROCESS CONTROL
COMPRESSOR COLD WEATHER PROTECTION
An efficient way to avoid damage to heat pump, air conditioner, and refrigeration unit compressors.
Application
Heat pumps, air conditioners, and refrigeration units all have compressors, which
are pumps that move refrigerants through the systems. Compressors must be
lubricated by oil to operate efficiently. When the compressor is not operating, the
oil sits in a compartment located underneath the unit in a sump, or crankcase, and
can get cold. If the oil is not kept warm during shut-down periods, pressure in the
area will be reduced and refrigerant inside the cooling system will migrate back into
the oil because refrigerant is attracted to lower pressure (colder) areas. When this
happens, two problems may occur after re-starting which damages the compressor.
1) The oil will boil the refrigerant, causing it to foam and carry oil away from
the compressor which could lead to an insufficient amount of oil to
lubricate the compressor.
2) The refrigerant mixes with and thins the oil and reduces its ability to
lubricate.
Solution
BriskHeat’s crankcase heaters are the solution to keep the compressor oil at an
elevated temperature to ensure the refrigerant does not migrate and mix with
the oil. Each heater is composed of a long thin electrical heater with a built-in
adjustable strap that easily fits around the cylindrical housing of the crankcase.
They come in a variety of sizes to fit almost any size industrial or residential
crankcase. They are easily wired to the electrical box of the HVAC unit, and because
of the way the HVAC wiring is set-up, the crankcase heaters will only operate when
the system is turned off.
20
Toll Toll
Free:
Free:
800-848-7673
800-848-7673
| Phone:
| Phone:
614-294-3376
614-294-3376
| BriskHeat.com
| BriskHeat.com
| Email:
| Email:
[email protected]
[email protected] | Fax:
| Fax:
614-294-3807
614-294-3807
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BriskHeat Corporation.
Corporation. All
All Rights
Rights Reserved.
Reserved. 20-01
19-03