Part No. 30911 Rev. A September 2020
- 34 -
Visair Refrigerated Cabinets
Servicing
VISAIR CABINETS
-
APPENDIX A
R-290 Refrigerant
Gas Monitor
Before entering any service area that may have hydrocarbons, always turn on a
combustible gas monitor to alert you to the presence of flammable refrigerants
while you are working.
Do not turn the combustible gas monitor off until you leave the service area.
Ignition
Do not unplug, disconnect power to, or begin servicing a system before
checking for flammable refrigerants with the combustible gas monitor.
Sparks from unplugging or power disconnects could ignite flammable
refrigerants.
Danger Sign
Display a Danger Propane placard to alert all that
you are working on a R-290 system.
No open flames or smoking is allowed.
Instruct anyone in the immediate area the nature of
the work taking place.
Be aware that E-cigarettes or similar electronic
devices could be a source of ignition.
Fire
Extinguisher
An approved fire extinguisher is required when servicing a system that contains
a flammable refrigerant.
Access Fittings
Since access fittings are not supplied on any R-290 systems. Before adding
access-fittings you should check temperatures and amps and contact FPG for
guidance on fault finding.
Electrical
Connectors
Wire nuts are not approved for R-290. All connectors must be
UL approved for use with Hydrocarbons.
Wire connectors must have sufficient strength to hold the
conductor/wire in place.
Replacement
Components
When replacing components, ignition-proof sealed electrical components are
required.
To avoid using unapproved parts, only FPG replacement parts are to be used
on a R-290 system.
