MAHLE RTI RHS680 - Manual (Page 11)

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. During filter changes every 25 hours, it is IMPERATIVE for the longevity of the
RHS680, that two ounces of compressor Poly Ester Oil (POE - RTI P/N 011-80021-00)
be added to the compressor to replenish oil lost during the previous 25 hours of
operation. Not adding oil at recommended intervals or using oil other than RTI P/N
011-80021-00 will void the warranty.
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 & ADDITION OF COMPRESSOR OIL
Filters (see next page for RTI part numbers) must be changed and oil must be added to the
compressor after every 25 hours of recycling refrigerant. The display will show “CHANGE FILTERS
+2OZ - COMP OIL”. 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. Use end wrench to loosen and tighten
copper tube fittings on filters. 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.
Locate compressor oil fill port (tag attached to port). Remove plug from the fill tube using two end
wrenches. Fill the syringe (supplied with RHS680) with two ounces of oil (RTI P/N 011-80021-00).
Apply power and place RHS680 in Vacuum Mode. Insert tip of syringe in fill port and inject the two
ounces of oil. The vacuum will pull the oil into the compressor. Press Stop. Disconnect power and
install plug on fill tube using two end wrenches.
Apply power. The display will show “CHANGE FILTERS +2OZ - COMP OIL”. While this message
is displayed, press and hold the [
<] key and the [>] key for two seconds to reset.