Instruction Manual

Page 9
MAINTENANCE
The RHS680 will provide many years of reliable service if properly maintained. Following is a
checklist of items which will ensure the RHS680 performs at peak efficiency and presents an image
to your customers that your shop performs high tech A/C service.
1. Use tool tray for storage of tools and accessory adapters.
2. Store gauge manifold and hoses properly when not in use. Avoid hanging hoses over the
top of the unit.
3. Keep the exterior surfaces clean. Use a mild all purpose cleaner to wipe oil and dirt off the
cabinet.
4. Do not allow the unit to sit outside in direct sunlight or inclement weather. Excessive
exposure to sun light and moisture may cause damage and will void the warranty.
5. The RHS680 is not intended to be used for mobile A/C service where the unit is
transported to customer sites. Excessive vibration will shorten component life.
6. Be gentle when moving the RHS680 around the shop. Tip the unit and ease the front
casters over any obstacles such as door jams, air hoses and floor irregularities.
7. Periodically remove the front cover and check for refrigerant leaks inside the RHS680
using a leak detector. A small leak detected early will prevent future undetected loss of
refrigerant.
8. Use regulated, clean shop air to remove debris from the fins of the condenser coil. Be
careful and do not disturb any internal components.
9. Periodically check oil level in compressor (oil level sight tube on left side panel). Oil should
be visible in the oil sight tube when the compressor is not operating. If oil is not visible, call
RTI Technical Support 800-468-2321.
10. Periodically check the oil level in the vacuum pump (if installed). Oil should be visible half
way up the sight glass while the vacuum pump is running. If the oil level is low, call RTI
Technical Support 800-468-2321.
FILTER CHANGE
Filters must be changed after every 25 hours of recycling refrigerant. The display will show
“CHANGE FILTERS”. This reminder will be displayed whenever the RHS680 is turned on or a new
procedure is started.
Disconnect power and remove tool tray from top of RHS680 to change filters. Use end wrench to
loosen and tighten copper tube fittings. The foam insulation on the smaller outlet filter must be
removed from the old filter and reinstalled on the new one. Check for leaks after replacing filters.
Apply power to the RHS680. The display will show “CHANGE FILTERS”. While this message is
displayed, press and hold the [<] key and the [>] key for two seconds to reset the “CHANGE
FILTERS” message.
Inlet Filter (long) P/N: 026-80077-00 Outlet Filter (short) P/N: 026-80069-00