User's Manual

Maintenance
48 3A2175A
7. Thread the reservoir onto the cap assembly and
place it in the bracket (RB).
8. Push the supply tube (ST) approximately 1/3 of the
way into the reservoir.
9. Push the return tube (RT) into the reservoir until it
reaches the bottom.
NOTE: The return tube must reach the bottom of the
reservoir, to ensure that isocyanate crystals will settle to
the bottom and not be siphoned into the supply tube and
returned to the pump.
Prime IsoGuard Select Fluid Cylinder
Ensure that the IsoGuard Select fluid cylinder outlet
faces upward for air to exhaust.
1. Install IsoGuard Select fluid cylinder inlet fitting and
inlet tube into bottom of cylinder. The inlet tube is
the tube with a check valve installed in it which
points in the direction of flow towards the IsoGuard
Select fluid cylinder.
2. Install IsoGuard Select fluid cylinder outlet fitting
and outlet tube into top of cylinder. The outlet tube is
the tube with a check valve installed in it which
points in the direction of flow away from the Iso-
Guard Select fluid cylinder.
3. Remove check valve from end of outlet tube.
4. Use funnel to pour IsoGuard Select fluid into tube to
fill cylinder.
5. With check valve arrow pointing away from the Iso-
Guard Select fluid cylinder, install check valve in end
of outlet tube.
6. Install tubes into reservoir and install reservoir into
holder.
Clean Orifice Valves
Only for MD2 Valve using Orifice Block Kit 24E505 and
an orifice.
NOTE: 24E505 does not come with an orifice.
1. Follow Pressure Relief Procedure in MD2 valve
manual.
2. Use 5/16 in. nut driver to remove orifices.
3. Remove cap from orifice.
NOTE: The cap is held in place with reverse threads.
4. Remove needle from orifice. Thoroughly inspect all
o-rings and replace if necessary.
5. If necessary, use drill bit that is the same size as the
orifice to drill out the orifice. Orifice size is marked
on the orifice.
6. Liberally lubricate all o-rings.
7. Reassemble in reverse order. Torque orifices into
fluid housing to 20-30 in-lb (2.26-3.39 N•m).
F
IG. 18: IsoGuard Select Fluid System
24C352_313998_8e
NOTICE
To prevent cross-contamination of the orifices, do not
interchange A component and B component parts.
The A component orifice is marked with an A.