MovinCool Classic 40 Service Manual - Manual (Page 67)

Repair Section
67
(3) Checking vacuum
1) Leave the high pressure valve and the low
pressure valve of the gauge manifold closed for
five min or more, and confirm that the gauge
pointer does not return to zero.
2) If the gauge pointer returns gradually to zero
there is a leak somewhere in the system (this
could also include gauge manifold). Perform leak
check according to procedure indicated in the
next step. Once leak has been found and
repaired evacuate the system once more, and
confirm system holds vacuum.
I002184
Return
Pipe Brazing
Leave valves closed for 5
min or more. Pointer of
pressure gauge returning to
zero indicates there is a leak.
LO
Closed
HI
Closed
Valve Setting
Pressure Gauge