Graco Therm-O-Flow Plus, Инструкция по эксплуатации

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Operation
Start Up and Operation
See Graco form 309180, Installation and Operation
Guide, for detailed start up and operation instructions.
Pressure Relief Procedure
This procedure describes how to relieve pressure for
the supply unit. Use this procedure whenever you shut
off the dispenser/sprayer and before checking or
adjusting any part of the system, to reduce the risk of
serious injury.
WARNING
MOVING PARTS HAZARD
Follow the
Pressure Relief Procedure
below before checking or repairing the
ram or any other part of the system and
when shutting down the system. Keep
hands and fingers away from the ram
plate, fluid pump inlet, and lip of the fluid
container when raising or lowering the
ram to reduce the risk of pinching or
amputating hands or fingers.
During operation, also keep hands and
fingers away from limit switches to
reduce the risk of pinching or amputating
hands or fingers.
HOT SURFACE AND FLUID HAZARD
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.
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying 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, moving
parts, follow the Pressure Relief
Procedure whenever you:
are instructed to relieve the pressure
stop spraying/dispensing
install or clean the spray tip/nozzle
check or service any of the system
equipment
PRESSURE FLUID HAZARD
High pressures can cause serious per-
sonal injury. Be sure to
open the dis-
pense valve during system heat-up to
alleviate pressure which might occur in
the system due to material expansion.
To relieve pressure in the supply unit, perform the
following procedure:
1. Lock the gun/valve trigger safety.
2. Shut off the main air supply to the pump.
3. Close all air bleed valves.
4. Unlock the gun/valve trigger safety.
5. Hold a metal part of the gun/valve firmly to the side
of a grounded metal drum, and trigger the gun/
valve to relieve pressure.
6. Lock the gun/valve trigger safety.
7. Have a container ready to catch the drainage, then
open the drain valve or pump bleed valve.
8. Leave the drain valve open until you are ready to
spray/dispense again.
If you suspect that the spray tip/nozzle or hose is
completely clogged, or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the nozzle retaining nut or hose end coupling to
relieve pressure gradually, then loosen completely.
Now clear the tip/nozzle or hose.
9. If you want to relieve pressure in the ram, see the
Ram Pressure Relief Procedure on page 55.
CAUTION
To help avoid damage to equipment:
Be sure to reload the empty supply unit with a full
drum of material immediately. Do not allow the
supply units to operate when empty, which would
cause a pump runaway and damage to the sys-
tem.
Do not raise the ram and remove the ram plate
from the empty drum until you are ready to imme-
diately install a new drum.
Do not use a drum of material that has been
dented or otherwise damaged; damage to the
ram plate wipers may result.
CAUTION
Do not raise the ram and remove the ram plate
from the empty drum unless the supply unit is at
full operating temperature. Drum changes can only
be performed when the system is heated. Attempting
to change a drum when the supply unit is cold could
result in injury, damage to the equipment, or rupture
of the material drum.
An empty drum clamp can interfere with up and
down operation of the ram. When raising or
lowering the ram, make sure the drum clamp stays
clear of the ram plate assembly.