Operation; Coolant System Drain; Coolant System Fill - MAHLE VCX-32HD Operation Manual

6. Operation

WARNING - This section discusses the appropriate and
safe methods for using the equipment. Always ensure
proper understanding of the equipment function prior to
use to avoid injury.

6.1 Coolant system drain

The VCX-32HD is NOT to be used with hot coolant.
If engine coolant is contaminated, use the bypass
valve. This will redirect the coolant through a hose
that is on the machine to your waste container. This
will keep the machine free of contaminated coolant.
Follow these instructions to drain the coolant system.
1. Connect COOLANT DRAIN/FILL HOSE COUPLER to
bottom radiator connection (adapter sold separately).
If no bottom connection is installed, follow the step-
by-step installation procedure found in section 6.4.
2. Connect the PRESSURE/VACUUM HOSE to the
surge tank using the appropriate surge tank adapter
(sold separately).
To avoid coolant spill, DO NOT make the pressure /
vacuum connection if a coolant system leak is known
or suspected. In this case use the bottom connection
only and vent the system by removing fill cap.
3. Flip the DRAIN SWITCH to ON. Open the DRAIN
CONTROL VALVE.
4. Open the FLOW CONTROL VALVE and open the
PRESSURE/VACUUM CONTROL VALVE. Only if
pressure/vacuum hose is connected to top of radiator.
5. Take a coolant sample, if desired (optional) by opening
SAMPLER VALVE on the left side of machine.
6. When air enters the on-board (clear)
system is empty.
7. Flip the DRAIN SWITCH to OFF.
Drain time for 10 gallons is about 7 minutes when
using both connection and a clean filter.
FLOW
8. Close the
PRESSURE/VACUUM CONTROL VALVE, and the
DRAIN CONTROL VALVE.
filter,
the coolant
CONTROL VALVE,

6.2 Coolant system fill

Locking pliers may be needed to pinch the coolant
overfill tube to build a vacuum. Vacuum should reach
at least 15in-Hg on the gauge, which may take a few
seconds.
Follow these instructions to fill the empty coolant
system.
1. Connect the DRAIN/FILL HOSE To the bottom
radiator connection.
2. Connect the PRESSURE/VACUUM HOSE using the
appropriate surge tank adapters (sold separately).
3. Pinch or plug the radiator overflow tube.
4. Open the PRESSURE/VACUUM CONTROL VALVE.
5. Flip the FILL SWITCH to ON.
6. Open the FLOW CONTROL VALVE.
7. VCX-32HD will then begin the filling process.
8. When coolant reaches 2 inches from the top of the
coolant surge tank, close the FLOW CONTROL
VALVE and flip the FILL SWITCH to OFF. Remove
the surge tank adapter from the fill port to allow
venting during completion of the fill.
Unpinch/unplug the radiator overflow tube.
9. Close the PRESSURE/VACUUM CONTROL VALVE.
10. Flip the FILL SWITCH to ON and open FLOW
CONTROL VALVE.
11. VCX-32HD will now fill the remaining coolant.
12. Be ready to close the FLOW CONTROL VALVE to
prevent over-filling of the coolant system.
No topping off of coolant should be necessary as the
VCX-32HD has filled the same amount as it removed.
No coolant should be left in sight gauge after filling.
13. Close the FLOW CONTROL VALVE and flip the FILL
SWITCH to OFF.
14. Disconnect the hoses. See section 6.6 instructions to
add more coolant if needed.
the
The VCX-32HD on-board tank should be empty after
every fill procedure.
Operation | VCX-32HD | 9 | en