Toyotomi CTN/CTG-328W User Manual page 51

3. Open the piezometer completely and operate for 10-15min to check if the
pressure of piezometer remains in -0.1MPa.
4. Close the vacuum pump and maintain this status for 1-2min to check if the
pressure of piezometer remains in -0.1MPa. If the pressure decreases,
there may be leakage.
5. Remove the piezometer, open the valve core of liquid valve and gas valve
completely with inner hexagon spanner.
6. Tighten the screw caps of valves and refrigerant charging vent.
7. Reinstall the handle.
Leakage detection
1. With leakage detector: Check if there is leakage with leakage detector.
2. With soap water: If leakage detector is not available, please use soap water
for leakage detection. Apply soap water at the suspected position and keep
the soap water for more than 3min. If there are air bubbles coming out of
this position, there's a leakage.
Check after installation
Check according to the following requirement after fi nishing installation.
Items to be checked
Has the unit been installed fi rmly?
Have you done the refrigerant leakage
test?
Is heat insulation of pipeline suffi cient?
Is water drained well?
Is the voltage of power supply
according to the voltage marked on the
nameplate?
Is electric wiring and pipeline installed
correctly?
Is the unit grounded securely?
Possible malfunction
The unit may drop, shake or emit noise.
It may cause insuffi cient
cooling(heating) capacity.
It may cause condensation and water
dripping.
It may cause condensation and water
dripping.
It may cause malfunction or damage the
parts.
It may cause malfunction or damage the
parts.
It may cause electric leakage.
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GB