User Guide

3
GENERAL SAFETY INSTRUCTIONS
proper hoses and fittings should be used and checked for damage.
CAUTION: To avoid overfilling refrigerant tank, read and follow manufacturer’s recommended filling
instructions for refrigerant being recovered.
CAUTION: This equipment is intended for use of one refrigerant at a time. Mixing of different
refrigerants will cause your recovered supply of refrigerant to become contaminated.
Note: It is very expensive to destroy mixed or damaged refrigerants.
ADDITIONAL SAFETY INSTRUCTIONS FOR REFRIGERATION SYSTEMS
CONTAINING CLASS A2, A2L & A3 REFRIGERANTS
The following are additional safety recommendations when servicing refrigeration
equipment that contain Class A2L, A2 or A3 refrigerants. These instructions do not
replace existing occupational hazard procedures or other regulations that may be
required by local,state or federal agencies.
Technicians working on Class A2L, A2 and A3 systems should have detailed knowledge of and
skills in handling flammable refrigerants, personal protective equipment, refrigerant leakage
prevention,handling of cylinders, charging, leak detection and proper disposal. Additional
knowledge of legislation, regulations and standards relating to flammable refrigerants may also
be required. Special Certification or licensing may be required on Class A2L, A2, and A3 and
refrigerant handling. Check your local occupational safety codes.
The area of service should be marked as Temporary Flammable Zone. This will be 3 meter
perimeter around the refrigeration equipment being serviced and should have no smoking
and other hazardous signs posted. Local supervisor should be notified of the zone’s
existence.
• A flammable gas detector should be used to monitor air in the Temporary Flammable Zone.
• A dry powder or C02 fire extinguisher must be available at service location.
• A suitable ventilation fan should be used to maintain in the work space at a minimum of 5 air
changeovers per hour.
• Ensure the refrigeration equipment’s power has been discontinued.
• All potential ignition sources within Temporary Flammable Zone must be disabled.
• When connecting service equipment (such as vacuum pumps, scales, recovery units) to a
power source, the connection must be made outside the Temporary Hazardous Zone.
• A ground strap must be used between the TRS21 motor frame and the recovery tank brass
fitting. The ground strap must go on bare metal surface to ensure continuity and discharge
of static electrical charges.
• Do not pull system into a vacuum. Stop recovery process at 0 PSIG. This is to prevent
accidental ingestion of air into the recovery tank.
• Once recovery process of a Class A2L, A2 or A3 system is complete, system should be
purged with 100% Nitrogen. Do not use Air.
DANGER-EXPLOSION RISK: Do not mix Class A2L, A2 or A3 refrigerants with air. All
precautions must be taken to eliminate mixing of air with flammable refrigerants,including
monitoring Recovery Cylinder for air content.