FAQ Mobile
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What is the difference between the BD Solar and the normal BD types?
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The BD solar compressors can be connected to a solar panel without the use of any additional electronics or the use of a battery. The BD Solar compressor electronic unit includes an option to adapt for the voltage range of solar modules (9.6 V to 31.5 V). Therefore a resistor of 220 Ohm has to be connected between terminal C and P. The electronic unit also includes the AEO (adaptive energy optimizer) option.
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Are BD35F and BD50F available with inch connections?
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Yes.
BD35F: Code no 101Z0203. Suction and process port 1/4” and discharge 3/16”
BD50F: Code no 101Z0204. Suction and process port 1/4” and discharge 3/16”
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Can I use BD35F and BD50F compressors together with R404A?
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No.
There are two things that make it difficult, the motor and the oil.
The power consumption in general and starting current is very high using R404A. That will make the start of the compressor questionable. Even when using the BD only in low temperature applications (LBP), it would not be able to make a pull down. Using R404A with the BD compressors is not something that Secop can recommend or support with the present BD design.
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How can I check the BD35/50F electronics?
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Generally, the customer can use the LED for failure detection. For the details please see the Instructions, page 3, wiring diagram item 6 and description page 4).
Additionally the following can be checked:
- The compressor does not start at all the first time:
- check connections on compressor and back to battery,
- check for loose connections in plug or leads,
- check poles on battery (verdigris on poles or contacts?),
- standard or resistor changed battery voltage protection (see Instructions, page 3, wiring diagram item 9 and description page 5),
- Is battery voltage within the battery protection limits?
- check thermostat and connection to ports C and T,
- Has fuse blown because of wrong polarity? If so, change the fuse and try again with the correct polarity,
- Measure the resistance between all three current lead-in pins? If the value between all three pins is approximately the same the motor is most likely ok. Otherwise the compressor must be changed and investigated closer by Secop,
- if the compressor is so far ok and no externally faults have been detected, the electronics has to be closer investigated by Secop.
- The compressor starts but operates only for a short time: The problem can be a dimensioning problem of the cooling circuit (evaporator or condenser size, charge).
The compressor stops approximately 2 seconds after start of fan (2 flashes on LED) then the fan is overloading the electronic and the fan fault has to be solved or a smaller fan has to be used.
Category: Mobile - The compressor does not start at all the first time:
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What is the RF noise level dissipated by the BD35F or BD50F module and compressor?
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The compressors fulfill a lot of generic standards regarding RF noise. The units are certified after commission Directive 95/54/EC for motor vehicles and electrical/electronic sub assemblies. The unit is certified under E4 020277. If you need more details on RF noise we are pleased to send you the EMC report. Please contact us under mobile@secop.com.
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Does the BD35/50F compressor need a 12V or a 24V fan?
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It depends on the application if the compressor needs a fan or static cooling is sufficient. In case a fan is required both, the 12V as well as the 24V direct current systems have to run with a 12V fan.
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BD35F and BD50F compressor: With the 3000 RPM speed setting the instruction calls for a 692 ohm resistor which is a non standard resistor. The closest standard size is 680 ohm. Is this acceptable or not? ...
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... If a 680 ohm resistor is used what would be the result?
If you use a 680 Ohm resistor in the control (thermostat) circuit, the motor speed will just be a little less compared to the 3,000 rpm with a 692 Ohm resistor. But the difference between the two resistance values is so small that no difference in performance would be noticeable in practice.
For more information on the resistance as well as the electronic unit please see our website BDF electronic unit.
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What is the maximum current consumption for a BD35F?
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The maximum current is 4A. The compressor will not stop but simply not allow higher consumption. In practice it can lead to reduced speed and in worst case that the compressor will trip on min. speed at 1850 rpm.
Check with data sheet
Category: Mobile -
Can the new electrical box for BD35F or BD50F also be used with the older BD compressors model such as BD2 or BD2.5?
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No.
The design of the electronics is very different.
Category: Mobile -
Operating a Secop BD35F or BD50F at a converter the compressor does not start or just starts for a short period and stops again (2-3 seconds interval). This problem is not permanent but happens only from time to time.
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The controller of the compressor's motor has dependend of the settings a cut-off voltage of 9.6 V - 10.4 V at a 12 V supply or 21.3 V - 22.8 V at a 24 V supply. For details see chapter Alternative Battery Settings in the Collection of datasheets.
The starting current is app. 14 A. 1-2 seconds after starting it will be checked if the minimum speed has been reached and if the minimum voltage is available. Otherwise the compressor will be switched off.
The undervoltage at a ripple voltage supply is defined by the minimum value. For this the compressor's electronics is not suitable for the operation with a battery charging station or not stabilized power supplies.
The power supply must be able to handle a current up to 7,5 A and a starting current up to ca. 14 A in order not to reach the minimum voltage even in ripples. Normally the battery will buffer this. Connecting a small battery, e.g. of a lawn mower or a motorcycle should be sufficient.
Category: Mobile -
I have a Secop 12V DC refrigeration system and would like to run it with either 220V or 110V AC. Can you please advise me if you have such a component or what I have to do to achieve this?
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We do not offer such kind of AC/DC converters you are looking for. But it should be rather easy for you to buy a unit wherever you are, they are offered anywhere.
If you are going to connect the converter to a battery and power the compressor of the refrigeration system from the battery, just a simple unit like a traditional battery charger can be used. An output power of about 70W (6A) will be needed.
If you intend to run the compressor directly from the AC/DC converter, the situation is a little more complicated. Only our DC compressors designated BD35F or BD50F can be operated in this way, and the nature of the converter output voltage needs to be an approached DC with a maximum ripple of 0.5V peak to peak. Furthermore the unit must be able to yield a current of 14A for 1 second at a minimum voltage of about 11V
In any case, we strongly recommend you to run the compressor over a battery, this will ensure a stable refrigeration system operation without problems.
For more information on the electronic unit please see our website: BDF electronic unit.
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What type of oil is the BD35F – 50F and BD80F charged with?
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The compressor is charged with Ester oil (POE) with a viscosity of 15 cSt.
Alternative oils that can be used in a service situation are:&nbs
- Emkarate RL15H. Manufactured by Uniqema
- Mobil EAL Arctic. Manufactured by Mobil Chemicals
- CP2915AS manufactured by CPI
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What are the specifications for the diagnostic diode on a BD35F – 50F and BD80F compressor?
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The diode should be rated 10 mA. The electronic unit will send a flashing current signal of approx. 4 mA constant in the circuit in case of a fault.
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Can I run my BD compressor without electronic unit for test reasons?
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No.
BD compressors are for DC power supply. The field to turn the rotor has to be created by the electric equipment in order to let the compressor run. The compressor can be destroyed by trying to use it without electronic unit.
For more information on the electronic unit please see our website: BDF electronic unit.
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What approvals do we have on the BD35F and BD50F compressors?
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Australia and New Zealand: C-tick mark. AS/NZS 4251.1
Automotive market: e mark according to 95/54/EC
VDE in combination with 101N0500
USA: UL file no SA 3693
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What does the expression "Min. circuit ampacity xx" mean?
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The min circuit ampacity means amperage capacity and is calculated in the following way: RLA (rated load amps) of the compressor added with FLA (full load amps) of the fan multiplied with 1.25 (safety factor).
In summary this is the maximum current which can occur if the compressor is running at the highest load as specified and higher voltage as given.
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Do you make a compressor that would be able to use a refrigerant like R23 with POE oil or R13 with mineral oil for the low stage of a cascade system?
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No.
Secop compressors are available for R12, R22, R134a, R290, R404A, R407C, R502, R507, or R600a applications. We have no experience with compressors used with other refrigerants or used in cascade applications at very low temperatures. We know that some customers use the compressors with other refrigerants, but we have not been involved in any testing or approval for such applications and / or system layouts.
If a compressor is used for any such special application (on own risk) it is recommended that the load conditions do not exceed the equal maximum load conditions of the refrigerant the compressor is designed for. General Information on the operating conditions can be found in the relevant catalogue, more specific on the data sheet of the compressor.
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I cannot find a datasheet of an R12 or R22 compressor in your datasheets.
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We don't have the datasheets of our "older" compressor and condensing unit types on our website. So we are pleased to send you the documentation by mail or e-mail.
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Can I use a leak detection dyes in refrigeration systems?
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No.
Secop does not endorse the use of any substance except the refrigerant and the oil designed for use in the specific compressor.
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Could I use ammonia as a refrigerant in a Secop compressor if I change the oil to a compatible one? Have you tried to use ammonia on a hermetic compressor before?
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No.
All Secop hermetic compressors use motor windings of enamel copper wire, and some other small parts of copper or copper alloys. The copper will be attacked by ammonia, so the compressors will be damaged surely.
Also our internal materials are only tested for chemical compatibility with the oils and refrigerants they are made for. Changing the oil, maybe also the supplier can lead to problems.
Ammonia is not being used in small hermetic systems. One reason is that compression leads to very high temperatures with this refrigerant, if you have a high pressure ratio.
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At which speed do the hermetic compressors run?
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On 50 Hz supply the compressors run at nominal 2900 rpm, while with 60 Hz the nominal speed is 3450 rpm.
