14 308546
Maintenance
Pressure Relief Procedure
The system pressure must be manually
relieved to prevent the system from dis-
pensing accidentally. Fluid under high
pressure can be injected through the skin and
cause serious injury. To reduce the risk of an injury
from injection, splashing fluid, or moving parts, fol-
low the Pressure Relief Procedure whenever you
D Are instructed to relieve the pressure
D Stop dispensing
D Check or service any of the system equipment
D Install or clean the dispensing valve
WARNING
INJECTION HAZARD
1. Close the supply pump’s bleed-type master air
valve (required in pneumatic systems).
2. Open the dispensing valve until pressure is fully
relieved.
3. Open the dump valve at the pump fluid outlet, and
leave it open until you are ready to use the system
again.
If you suspect that the dispensing valve or extension is
clogged or that pressure has not been fully relieved
after following all the steps above, very slowly loosen
the coupler or hose end coupling, and allow pressure
to be relieved gradually, then loosen the part com-
pletely. Then clear the clog.
Replacing the Service Hose
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
1. Relieve the pressure if you are replacing the
service hose on a reel that is already truck
mounted or overhead mounted. Then go to
Step 3. Otherwise, start at Step 2.
2. Clamp the hose reel to a flat surface if you are
replacing the service hose on a reel that is not
mounted anywhere.
3. Fully extend the hose and latch the reel.
4. Attach a C-clamp to the reel flange to help prevent
the reel from unintentionally becoming unlatched
and spinning freely. See Fig. 7.
WARNING
Never allow the reel to spin freely. Doing so
causes the hose to spin out of control, which could
cause serious injury if you are hit by the hose.
5. Disconnect the service hose from the 90-degree
elbow (39), and remove it.
6. Uncoil and extend the new hose, and install the
hose stop (48) near the outlet end of the hose.
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