User's Manual

Setup
3A2175A 33
9. Connect whip hose to MD2 valve component A
(Red) and component B (Blue) fluid inlets.
10.Pressure check hose
Pressure check hoses for leaks. If no leaks, secure the
hoses and airlines together to protect from damage.
11.Ground system
a. HFR: grounded through power cord. See step 3
on page 29.
b. Fluid supply containers: follow your local code.
c. Object being dispensed: follow your local code.
d. Solvent pails used when flushing: follow your
local code. Use only metal pails, which are con-
ductive, placed on a grounded surface. Do not
place pail on a nonconductive surface, such as
paper or cardboard, which interrupts grounding
continuity.
e. To maintain grounding continuity when flushing
or relieving pressure, hold a metal part of dis-
pense gun firmly to the side of a grounded
metal pail, then trigger gun.
12.Check hydraulic fluid level
Hydraulic reservoir is filled at the factory. Check fluid
level before operating the first time, and weekly thereaf-
ter. See Accessories on page 91 for specifications.
13.IsoGuard Select Fluid system setup
(Not included on HFRS models)
Component A (Red) Pump: Fill IsoGuard Select reser-
voir (LR) with IsoGuard Select fluid (provided by Graco).
a. Lift the reservoir (LR) out of the bracket (RB)
and remove the container from the cap.
b. Fill with fresh fluid. Thread the reservoir onto
the cap assembly and place it in the
bracket (RB).
c. Push the supply tube approximately 1/3 of the
way into the reservoir. The supply tube is the
tube with the check valve with an arrow pointing
in the direction of flow towards the IsoGuard
Select fluid cylinder.
d. Push the return tube into the reservoir until it
reaches the bottom. The return tube is the tube
with the check valve with an arrow pointing in
the direction of flow away from the IsoGuard
Select fluid cylinder.
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.
14. Prime IsoGuard Select fluid cylinder
The IsoGuard Select fluid cylinder must be primed when
replacing IsoGuard Select fluid. See IsoGuard Select
™
System on page 47 for instructions.
This equipment must be grounded.
LR
RB
24C352_313998_8e