Perlick BBR96, Service Manual, Page: 9 / 76

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Back Bar Operation Installation Manual
Pre-service Safety Check
It is strongly recommended that all service
technicians receive training on the specific
equipment, procedures, and handling of flammable
refrigerants before conducting product service.
•
Use a combustible gas leak detector
to perform a background check and
monitoring around the appliance.
To avoid a risk of injury, do NOT use leak
detectors with an arc or spark module to
check for leaks in and around appliances that
use A2L or A3 refrigerants. The leak detector
must be certified for use with the specific refrigerant
class being serviced. If flammable refrigerant is
detected, immediately ventilate the room, evacuate
the area, and notify the owner or customer. Recheck
with a combustible gas leak detector before
proceeding.
•
Review the Safety Data Sheet (SDS) for the
refrigerant listed on the appliance’s ID Plate.
Because, some refrigerants and compressor
oils may cause frostbite and others may
cause chemical burns, use Personal Protective
Equipment (PPE) such as, protective gloves,
eyewear, etc.
•
Ensure a dry-powder fire extinguisher
rated
for Class B fires is accessible on site. Technicians
should be trained in the use of these fire
extinguishers.
•
Utilize a tubing cutter, not a torch or
other heated surface tool due to flammable
refrigerants.
•
Conduct all servicing in a well-ventilated
area. Whenever possible, open a window, door
or other means to ventilate the area. Take extra
care if the repair work is done in a confined
space, including providing enhanced ventilation
to prevent formation of flammable atmospheres.
Before repair work is performed, take these
steps to ensure that no ignition sources are
present:
•
Check the area for obvious sources of sparking or
open flames.
• Ensure the area is free of open flame or burning
materials, including cigarettes, candles, or similar
materials.
• Do not operate appliances that utilize open
flames, igniters, or have hot surfaces (for
example: electric or gas ranges, electric or gas
dryers, toasters, and other small appliances)
while servicing the appliance.
•
Inform the owner/consumer that no open ignition
sources should be present in or near the area,
including cigarette smoking materials.
•
Check the area and the appliance for abnormal
signs of ignition or melting of components that
might have occurred prior to the service call.
If there are signs of these situations, stop and
contact the manufacturer before conducting
service.
•
Maintain a safe zone around the appliance during
service work to prevent introduction of ignition
sources or entry by the customers.
•
If the appliance is being moved to a service
center, take care to prevent damage to the
appliance, especially the refrigerant lines.
• Utilize vacuum pumps, recovery equipment, and
other tools that are rated for and certified for use
with A2L or A3 flammable refrigerants. Vacuum
pumps must be certified for the refrigerant being
used. Service companies/technicians should
consider, where appropriate, the use of spark-
proof tools as an additional measure of safety.
Leak Detection and Coolant-line Repair
•
Never use potential sources of ignition, open
flame, charging with flammable refrigerants,
or hot surface tools to detect the presence of
a leak. Use soap-bubble testing when charging
with oxygen-free dry nitrogen (OFN/OFDN), and
a certified and calibrated combustible gas leak
detector to test for leaks if the system is charged
with an A2L or A3 refrigerant.
•
After repair, check for any vented refrigerants
with a combustible gas leak detector. If a leak is
detected or if the coolant lines must be repaired,
replaced, or filled, strictly follow all instructions
provided by the manufacturer.