22
F. Sight Glass Removal & Re-Installation
1.
Boiler and pump should be switched off.
2.
Boiler should be cool and the water level should be
below the lower water gauge fixture.
3.
Close the upper and lower water gauge valves.
4.
Loosen both sight glass packing nuts (top and
bottom) with a wrench.
5.
Slide glass carefully upward into the upper fixture.
Glass should lift out of the lower fixture.
6.
Pull glass down, out of the upper fixture tilting the
glass slightly to clear the lower fixture. Be careful not
to break the sight glass when removing.
7.
Assemble the new sight glass as shown.
ALWAYS
replace the gaskets and brass washers when
installing a new sight glass.
8.
Slide the new glass into the upper fixture. Glass
should clear the lower fixture and tilt into position.
9.
Slide the sight glass down into the lower fixture.
Equalize the gap between the upper and lower
fixtures.
10.
Tighten the sight glass packing nuts hand tight.
11.
Use a wrench to tighten 1/4 turn past hand tight.
NEVER
over tighten the sight glass. This will crack
the glass and cause it to shatter under pressure.
12.
Open the upper and lower gauge valves.
13.
Switch on boiler and pump.
Summary of Contents for Lattner
Page 1: ...Instruction Manual WLF Steam Boilers 2006 to 2007 ...
Page 32: ...Page 32 ...
Page 33: ...Page 33 ...
Page 34: ...Page 34 ...
Page 35: ...Page 35 ...
Page 36: ...Page 36 ...
Page 37: ...Page 37 ...
Page 38: ...Page 38 ...
Page 39: ...Page 39 ...
Page 40: ...Page 40 ...
Page 41: ...Page 41 ...
Page 42: ...Page 42 ...
Page 43: ...Page 43 ...
Page 44: ...Page 44 ...
Page 45: ...Page 45 ...