DH Instruments GFS2102, Руководство по эксплуатации и обслуживанию, Страница: 56 / 206

GFS2102™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 40
Remove the fasteners holding the lid on the heat exchanger and pull the lid/coil out of the
exchanger (See Figure 27).
Figure 27: Heat Exchanger unassembled
If using straight water, distilled water is recommended. If using a water/antifreeze mix, prepare an
approximately 50/50% mixture of water to antifreeze.
Fill the exchanger approximately 80%
full.
Place the coil assembly in the liquid as far a possible while still being able to observe the liquid
level. If necessary add more liquid until the level is about ½” from the top of the exchanger.
If liquid spillage from the exchanger is a concern (i.e. frequent bumping or tipping) then
run a bead of caulk or gasket compound along the lip of the exchanger before placing the
lid completely on. Keep in mind this will complicate future liquid replacement.
A three point fastener system is used to secure the lid in place, and typically the lid will only go on in
one orientation that will allow alignment of all three holes in the lid with those in the can. Orient the
lid and place it on the can.
Install the screws through the holes and place the nuts on the screws.
Tighten the screws
until snug.
The Heat Exchanger is now ready to use. When in use it should be between the outlet of the
GFS and any downstream hardware such as a pressure regulator, MFC, or molbloc. To
facilitate checking the fluid level, weigh the prepared Heat Exchanger and record the mass
somewhere on the Exchanger (see Section 6.7).
3.3.15 CONNECT THE DUT FLOW PATH
molstic molbloc mounting systems are available to assist you in flow path setups on the GFS-
2102™ system. molstics provide an engineered solution to the practical issues of mounting
the molbloc, connecting to the gas supply from the GFS, regulating the pressure and
connecting the device to be tested. Highest quality components are integrated into a
compact assembly to assure optimum molbloc/molbox performance.
Figure 28: Single, Low flow molstic