Operation - Graco 77X542 Instructions Manual

Operation

The remote filling station pump stalls (dead-heads)
when the reservoir is full, causing the supply system
pressure to rise to the maximum output pressure
of the filling station pump. To help prevent equipment
damage or serious injury caused by pressurized fluid,
such as skin injection or injury from splashing fluid,
always use a remote filling station pump with a maxi-
mum output pressure of 5000 psi (34.4 MPa,
344.7 bar) and use supply hoses with a minimum
pressure rating of 5000 psi (34.4 MPa, 344.7 bar).
The reference letters used in the following instructions
refer to the Typical Installation diagram provided on
page 3 and Component Identification on page 4.
1. Pull out and hold the Pressure Relief Plunger (R)
long enough to relieve line pressure between Fill
Valve (A) and Auto-Fill Shut Off Valve (C).
2. Verify that the Pressure Relief Plunger (R) is seated
and returned to the original position.
NOTICE
Failure to reset the Pressure Relief Plunger (R) could
lead to equipment damage.
3. Verify that the Auto-Fill Shut Off pin is down, indicat-
ing it is reset (F . 2). See the Auto-Fill Shut Off
IG
instruction manual.
pin
down
F . 2
IG
4. Remove yellow Dust Cover (T) from Fill Coupler (M).
5. Connect Supply Hose (J) between the Remote Fill-
ing Stations Pump (H) and Fill Coupler (M) port
marked with an "I".
333393D
6. Start Remote Filling Station Pump (H).
7. When Reservoir (E) is filled:
• the Remote Filling Station Pump (H) stalls
(dead-heads),
• the Auto-Fill Shut Off pin pops up as shown in
F . 3,
IG
• the gauge pressure rises to the fill pump's set
pressure.
NOTE: If the pump does not stall (dead-head) there is a
leak in the system.
pin
up
F . 3
IG
8. Turn off the Remote Filling Station Pump (H).
NO
9. Pull out and hold the Pressure Relief Plunger (R)
long enough to relieve line pressure between Fill
Valve (A) and Auto-Fill Shut Off Valve (C) and
between Remote Filling Station Pump (H) and Fill
Valve (A).
10. Verify that the Pressure Relief Plunger (R) is seated
and returned to the original position.
NOTICE
Failure to reset the Pressure Relief Plunger (R) could
lead to equipment damage.
NOTE: The length of time it takes to vent varies depend-
ing on the system design and installation. In some
installations it may be necessary to repeat Step 9 to
ensure pressure is relieved.
11. Disconnect Supply Hose (J) at Fill Coupler (M).
12. Replace yellow Dust Cover (T) over Fill Coupler (M).
Installation
5