5
STARTUP & SAFE OPERATION
9Do not use a damaged unit. Check for shipping damage and place a claim with carrier if
damage is discovered.
9Return the Warranty Card to activate technical support service and warranty coverage.
9The RHS980 should be operated by certified personnel only.
9The RHS980 should not be operated or serviced by any person who has not read all the
contents of this manual.
9This manual describes normal operation and maintenance for the RHS980. Failure to read
and comply with these instructions or any one of the limitations noted herein can result in
serious injury and/or property damage. The instructions should not be interpreted to anticipate
every possible contingency.
9It is the responsibility of the owner/user to operate the RHS980 in accordance with all laws
and specifications which may apply.
9Recover, recycle, and charge only R134a.
9Avoid breathing refrigerant or lubricant vapor. Exposure may irritate eyes, nose and throat.
Ventilate work area if accidental system discharge occurs.
9Wear safety glasses and protective gloves. Refrigerant has a very low boiling point and can
cause frostbite.
9Follow the RHS980 operating procedures sequentially to avoid prematurely disconnecting
hoses or opening valves which may release refrigerant to the atmosphere.
9Do not expose the RHS980 to moisture or operate in wet areas.
9Use the RHS980 in locations with ventilation that provides at least four air changes per hour.
9Service hoses must be constructed of the proper materials and should be of minimal length.
Hoses must have shutoff devices at the connection point to the A/C to minimize the
introduction of air into the RHS980 and the release of refrigerant when being disconnected.
9Avoid using an extension cord with the RHS980. If necessary use a good condition, three wire
grounded, #14 AWG or larger extension cord of the shortest possible length.
9Disconnect power before performing any maintenance or service on the RHS980.
9Do not connect the RHS980 to the liquid side of any A/C with a capacity greater than 4 lbs.
Refrigerant in A/C Systems having larger capacities must be recovered from the vapor side
only.
9
SPECIAL CONSIDERATIONS WITH R134a
R134a has been shown to be nonflammable at ambient temperature and atmospheric pressure.
However, tests under controlled conditions have indicated that at pressures above atmospheric
and with air concentrations greater than 60 percent by volume, R134a can form combustible
mixtures.
While it is recognized that an ignition source is also required for combustion to occur, the
presence of combustible mixtures is a potentially dangerous situation and should be avoided.
Under no circumstances should any equipment be pressure tested or leak tested with air and
R134a mixtures. Do not use compressed air for leak detection in R134a systems.
