Mitsubishi Electric R410A Manual page 15

R410A Refrigerant Manifold
A solid manifold gauge specifically used
for R410A.
Manifold gauges with sight gauges
should never be used due to the higher
operating pressures, unless specified
for use on R410A.
N itrogen Pressure Gauge
A higher range N itrogen Regulator
must be used due to the higher
pressure testing requirements
when strength testing to conform
with local code.
Vacuum Gauge
A vacuum gauge to be used to provide an
accurate evactuation level is required
Vacuum Pump
A Vacuum pump of sufficient quality and
working order to be used to pull the
correct vacuum to negate any moisture
being present in the system (pump oil
needs to be regularly changed).
T he pressure gauge
*
The refrigerant manifold gauges are not suitable for measuring vacuum.
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