What type and what amount of oil is charged into the compressor?
The amount of oil can be found in the data sheet of the individual compressor. Data sheets and collections of these can be found and also downloaded on our homepage.
The collections are quite large, but they contain an introductory section with some information on use, oil type, starting equipment and application limits.
Please find below a listing of the compressor oils we use:
For R134a compressors:
- PL and TL: 15 cSt POE
- NL and FR: 19 cSt POE
- SC: 22 cSt POE
For R600a compressors:
- TL: 7 cSt or 10 cSt mineral oil
- NL: 15 cSt mineral oil
For R404A compressors:
- All types use 32 cSt POE
All refrigeration oil types are non-additised, only antioxidant is allowed.
How do I get a Material Safety Data Sheet (MSDS) for the compressor oil?
Secop has MSDS sheets for the original oil that can be handed out to customers on request.
Please contact your local Secop Company.
What parameters are determinant for the lifetime of a compressor and what can typically be expected?
Important factors determining the lifetime are:
- system dimensioning and lifetime
- system temperatures, esp. valve and winding temperatures
- system pressures
- purity of system components
- refrigerant and oil quality
- lifetime of other system components
- quality of mains (cut-outs, voltage drops etc.)
- application duty cycle
In a typical application where the compressor is used within the specified limits given in the actual product literature a lifetime of 15 years can be expected.
Do you have a mathematical equation and coefficients for the compressors data?
We publish our compressor performance data according to the ARI standard 540-91 and EN 12900. The data are used, but can not be found in RS+ 3. If data for a specific compressor is needed, you are welcome to contact us via FAQ request.
What parameters are determinant for the noise level of a cooling system?
The most relevant factors are:
- combination of components in the cooling system (layout and installation)
- pulsations and turbulences in the refrigerant gas related to the specific system
- actual level of system insulation, fx of machine compartment
- actual system vibration prevention
- suction and / or pressure mufflers
How much noise does a Secop compressor make?
The Secop compressors are extremely low-noised compared to the average competition products. Please contact us under firstname.lastname@example.org, email@example.com or firstname.lastname@example.org for specific information.
How does horsepower compare to capacity in W or Btu/h?
Horsepower or hp is a historic relict originally determining the motor size. There is no official standard relation to refrigerating capacity each manufacturer has its own formula. Data given in hp from different manufacturers therefore cannot be compared.
Also, a capacity given in hp is dependent on the application range of the compressor, i.e. 1 hp of an air conditioning compressor is different from 1 hp of a LBP compressor.
If the capacity in W or BTU/h at given conditions is known this should be the preferred value for comparison.
Is the motor protection switch of a Secop compressor internal or external?
For the P/T/D/N and F-series this can be recognized from the second letter of the compressor's nomination:
"T", "F", or "LV" indicate an external protector. "L" and "R" indicate an internal protector.
For the SC compressors please check the data sheet of the individual compressor. For most types the protector is internal, only some 115V/60Hz types are equipped with an external protector. In these cases the protector is shown as a separate part in the figure (f) and listed in the list of accessories on the data sheet.
For more information on Secop compressors' designation see "Key to Compressor Type Designation".
Why is the compressor's shell hot?
Secop compressors are not cooled by suction gas, but cooled with oil circulating inside the compressor shell. The heat is transferred via the shell to the ambient.
What is the meaning of the serial number on the compressor?
The serial number has been introduced starting from July 2004 (see also serial number).
The serial number on the compressor is an individual number of each single compressor. There is no relation from the serial number to the production date or the shipment day or anything like this.
The serial number has been introduced to help our customers, which are using the individual compressor serial number in their documentation on an actual appliance.
The production date can therefore as before be found via the stamped code into the housing of the compressor (check Data Code).
How can I read the date stamp on the compressor?
Secop puts a date stamp on each compressor. Stamped into the shell above or just to the right of the paper label are two lines of data. The first line states the model designation and the code number, e.g. L-4CL-2071
L = last letter (or last two letters) of the compressor type,
4CL = nominal displacement,
2071 = 4 last digits in the code no.
Beginning in 2002 Secop started to introduce a new coding consisting of two lines, e.g.:
H4485 = Compressor type information (102H4485 = H4485)
C = internal Secop Code.
05 = Production week
1 = Production year
D = Production day (A = Monday, B = Tuesday, etc.)
11 = Production hour 00 to 23 or shift code -1, -2, -3
R = Secop internal production location code
- A-G, U = Germany
- A until week 50/2005
- D until week 35/2006
- U until week 08/2010
- K-N = Slovenia
- L until week 34/2011
- A, D, L, R, U Slovakia
- A from week 01/2006
- D from week 38/2006
- L from week 44/2011
- R from week 01/2005
- U from week 12/2010
- R-S Mexico
- R up to week 27/2004
- W to Z China
For more information check our Product Bulletin "Date Code Format & Country of Origin" on our website.
- A-G, U = Germany
The paper label is unreadable, how do I know what type of compressor I have?
Stamped into the shell above or just to the right of the paper label are two lines of data, the first line contains the model information. With these data please contact your local Secop representation which will assist you further.
What does the type code of a Secop compressor mean?
The type code has to be separated into the single letters. Sometimes a letter may mean two letters or even a blank!
The first letter stands for the compressor series ("BD", "P", "D", "T", "N", "F", "S" or "G").
The second letter gives the protector location:
- "L", "R" and "C" means internal protector,
- "T", "F" or "LV" external protector.
The third letter gives the optimization level:
- E = energy optimized,
- S = semi-direct intake,
- Y = high energy-optimized,
- X = very high energy-optimized
The number denotes the displacement in ccm. For P and BD compressor types it gives the cooling capacity in W at rating point.
The following letter gives the application range and the refrigerant.
The next letter denotes the code letter for starting characteristics
- " " = universal
- "K" = LST characteristics (capillary)
- "X" = HST characteristics (expansion valve)
The last digit means the generation in development
- " " = 1st generation
- "2" = 2nd generation, etc.
For an an overview please take a look at our "Key to Compressor Type Designation".
Who is Secop?
Munich-based industrial holding company AURELIUS AG acquired Danfoss Household Compressors from the Danfoss Group, Denmark. The agreement to take over the Danfoss Household Compressors business was signed in July 2010.
In connection with the new ownership Danfoss Household Compressors has changed its name to Secop GmbH. Secop remains a close, long-term partner of the Danfoss Group, as it will continue to sell a major part of its products and solutions, through the Danfoss Group and its sales companies.
With more than 50 years of experience in compressor technology and highly committed employees, our focus is to develop and apply the advanced compressor technologies to achieve standard setting performance for leading products and businesses around the world.
Secop is our new brand name and was based on: System Effective Coefficient Of Performance.