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HID207
User Manual
For The Service Tech - R290
Refrigeration service should only be attempted
by a trained trade professional certified to work
on R290 systems.
Here are some critical service items.
This list does not qualify anyone to service the unit.
It is a reminder and checklist for the service tech.
Keep these in mind for R290 service:
•
Wire nuts are NOT to be used when changing an
electrical part.
•
The process tubes are to be used for service
access.
•
Cut out (with tubing cutter) refrigeration
components that are to be replaced. Do NOT
un-braze.
•
Because R290 can be vented into the air during
service, the venting MUST be in an area free
from flame or spark. It must be near an open
window or door.
•
A sign noting service of a system containing
propane must be attached to the unit during
refrigeration service.
•
A combustible gas leak detector must be used
to inform anyone in the area when propane is
present in the air.
Other Information:
Evacuation: It is critical that a refrigeration
system be leak free and internally dry. A thorough
evacuation with a good vacuum pump with a micron
gauge attached is the only way to ensure that the
system is dry and ready for a charge of refrigerant.
Charging: The system is critically charged and the
proper type and amount MUST be weighed in.
March 2024
Page 23
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