i am reading an iom manual and it says the following.,
1 Attach the 3/8” or 1/2” hose with a sightglass in
the middle to the oil sump drain valve and the
condenser service valve at the top of the
2 After the unit is off line for 10 minutes move the
sightglass along the edge of the condenser tubesheet at the same height of the oil sump.
why would one move across condenser tube sheet anyways?,
my question is that if one moves the sight glass along the cond tube sheet,,
at the same height of the oil sump??
page 129 or 9-1