QBD COOLING SYSTEMS INC.
QBD.COM
30
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Always use QBD supplied OEM parts only. Use of non-OEM
parts will not only void the warranty but may also lead to a fire,
explosion, serious injury or death.
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Only trained and certified technician, for Hydrocarbon
systems, should service these coolers.
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Use extreme caution and follow all local/regional codes for
transportation or relocation of Hydrocarbon coolers.
24.
FREQUENTLY ASKED
QUESTIONS
1.
How do I know if a cooler is using R-
290 refrigerant?
A number of visual differences have
been made in coolers running on R-290.
Check for R-290 indication on Cooling
Deck and the serial plate of the cooler.
2.
Do you need any specialized training
to service R-290?
Although it is not mandatory, we
recommend you to attend specialized
training for this. Contact Refrigeration
Service
Engineers
Society
www.rses.org for more details.
3.
Can I retrofit any cabinet to HC/R-290
refrigerant?
NO. The EPA has ruled that the
retrofitting of any existing equipment is
prohibited. All potential spark producing
parts in the system, including those in
cabinet have to be UL certified. Any
negligence may also lead to a major fire,
explosion, severe injury or death.
4.
Can I use/add light switches in R-290
cabinet?
NO. All electrical fittings must comply
with UL # 471 and must be explosion
proof. It is therefore recommended not
to add any electrical switch in the
cabinet. LEDs provided with the cooler
are compliant to UL#471 and must be
replaced with OEM parts only.
5.
Can the same tools be used to
service a hydrocarbon cooler and an
R-134a/R-404A system?
Since
refrigerant
R-290
is
highly
flammable, no spark producing tool can
be used with HC cooling system. More
details of recommended tools are
provided in this manual. Please check
with QBD technical support team if you
have any questions.
6.
Can the same parts be used in a
hydrocarbon cooler and an R-134a/R-
404A system?
NO
7.
Is there a maximum charge amount
for R-290 refrigeration systems?
YES. You can only have a maximum
charge amount of 150 grams (5.3
ounces) in HC refrigeration system.
8.
Do I need to recover the R-290
refrigerant?
NO. It is not mandatory.
Always follow
local laws and regulations for
recovery or venting of hydrocarbon
refrigerant.
9.
Where can I get R-290 refrigerant?
You can source this refrigerant from an
HVAC supply house or a company that
sells gases and welding supplies.
Always make sure you are purchasing
“refrigerant grade propane R-290”.