MAHLE RTI VCX-4 - Manual (Page 14)

Page 13
Troubleshooting
Problem Solution
Vacuum becomes weak Inside of the VCX, there is a venturi vacuum generator that
may have collected debris during the operation of the unit.
If this occurs, the vacuum will become weak resulting in a
lower vacuum reading on the System Vacuum gauge and poor
performance. Remove the venturi from the line and blow shop
air through it. Use the Parts Identification (page 14) to locate
the venturi. Reconnect to correct lines when done.
There may be a vacuum leak at either the top or bottom
sealing point on the tanks. Fill the tank to the top with water
and turn all valves to the Home position. Close the Cone
Adapter Valve and turn all valves to the Empty (leaking tank)
position. Check for leaks and follow guidelines from the
Leakage section.
Leakage Debris may have collected at the bottom of the tank.
Disassemble tank and clean the base of tank. Take care when
reassembling not to over tighten the hex nut (use 60 lb/in
torque wrench). Do not use pneumatic or power tools.
Over time, the o-ring at the bottom or top of the cylinder may
become worn. Inspect and replace if needed. See part break
down on left.
Tank Overflow If fluid is ever filled to the top of the tank while using the unit
there is a device that will release excess to the inside of the
cabinet.
External Clear Hose Using the VCX to remove coolant from a vehicle creates high
temperatures throughout the unit particularly where the clear
hose connects to the Cone Adapter.
Repeated exposure to these temperatures may cause
deterioration of the hose. If possible cut affect area off and
reconnect Cone Adapter. If replacement of the hose is
required call RTI.