Graco 246781 Series C Heat Pump User Manual


 
Installation
309966H 5
Air and Fluid Line and
Accessories
See FIG. 2.
Three accessories are required in your system: an air
shut-off valve/air bleed device, fluid drain valve, and
ground wire. These accessories help reduce the risk of
serious bodily injury, including skin injection, splashing
in the eyes or on the skin, injury from moving parts if you
are adjusting or repairing the pump, and explosion from
static sparking.
The air bleed device relieves air trapped between it
and the air motor after the air supply is shut off.
Trapped air can cause the air motor to cycle unex-
pectedly, causing serious injury if you are adjusting
or repairing the pump. Use a bleed-type master air
valve (J), installed near the pump air inlet within
easy reach from the pump.
The fluid drain valve (K) assists in relieving fluid
pressure in the displacement pump, hoses, and dis-
pensing valve. Triggering the valve to relieve pres-
sure may not be sufficient.
The ground wire (B) reduces the risk of static spark-
ing.
1. Install a pump runaway valve (G) to shut off the air
to the pump if the pump accelerates beyond the
pre-adjusted setting. A pump that runs too fast can
be seriously damaged.
2. Install an air line lubricator (F) for automatic air
motor lubrication.
3. Install a bleed-type master air valve (J) to relieve air
trapped between the valve and the motor. Order
Part No. 107142.
4. Install an air regulator (C) to control pump speed
and pressure.
5. Install an air line filter (E) to remove harmful dirt and
contaminants from your compressed air supply.
6. Install a second bleed-type master air valve (J)
upstream from all other accessories, to isolate the
accessories for servicing.
Typical Installation for Stationary Mountings
FIG. 2
CAUTION
Do not hang the air accessories directly on the air
inlet. The fittings are not strong enough to support the
accessories and may cause one or more to break.
Provide a bracket on which to mount the accessories.
Install the air line accessories in the order shown in
F
IG. 2.
04191C
A
B
C
D
E
F
G
H
J
K
J
Recommended air line
configuration to reduce
moisture in pump
KEY
A Fluid dispense line
B Pump ground wire (required)
C Air regulator with gauge
D Main air supply line
E Air line filter
F Air line lubricator
G Pump runaway valve
H Follower plate
J Bleed-type master air valves
(required)
K Fluid drain valve
1/2 in.