User Manual

5 Using the manifold
9
WARNING
Over tightening the valve stem shutoffs may cause:
• Damage to the PTFE seal.
• Mechanical deformation of the valve piston leading to the
PTFE seal falling out.
• Damage to the thread of the threaded spindle and the valve
screw.
• valve knobs to brake.
Lightly tighten the valve knob. Do not use tools to tighten the valve
stem shutoffs.
5 Using the manifold
5.1. Preparing for measurement
5.1.1. Switching the instrument On
> Press [ / ].
Zero the pressure sensors before every measurement.
✓ All connections must be at ambient pressure.
> Press
[P=0] key for 3 seconds to execute zeroing.
Connecting the refrigerant hoses
Before each measurement check whether the refrigerant hoses are
in flawless condition.
✓ Make sure the valve stem shutoffs are closed.
1. Connect the refrigerant hoses to the low-pressure side (blue)
and high-pressure side (red).
2. Connect the refrigerant hoses to the AC/R system.