Graco 918334, Instructions-Parts List Manual

Page: 31 / 86

310528 31
Service
Ram Service
To relieve ram air pressure, follow the procedure
below. For more more information about servicing the
ram, see Form# 310525,
76 mm (3”) Global Ram
Module
.
Ram Pressure Relief Procedure
WARNING
To reduce the risk of serious injury whenever you
service the ram, always follow the procedure
below.
To relieve air pressure in the ram:
1.
Relieve the supply unit pressure
.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 21).
2. Using the ram hand valve lever on the pump air
control (Fig. 3 on page 21), move the ram to the
DOWN position.
3. To stop the ram from moving (Fig. 7):
a. Close the master air lock-out valve (B).
b. Move the hand valve (3) to the OFF position.
This valve shuts off the air supply to the ram.
Fig. 7
7980A
B
3
4. Exhaust air from both sides of the ram:
a. Move the ram hand valve lever to the DOWN
position until all air is exhausted from one side
of the ram.
b. Move the ram hand valve lever to the UP
position until all air is exhausted from the other
side of the ram.
Removing a Material Pail from the Supply
Unit
WARNING
The material and equipment will be
hot! To reduce risk of injury, wear eye
protection, gloves and protective clothing
when installing, operating, or servicing
this dispensing system.
Before you perform the procedures in this section,
remove the material pail from the supply unit.
Only
remove the pail from the supply unit while the supply
unit is hot.
Observe the cautions and warnings, then
follow steps1 through 4 of the procedure for Changing
Empty Pails on page 23.