Graco Husky 1590 DB3 Series Installation Manual page 10

Air Exhaust Ventilation
WARNING
FIRE AND EXPLOSION HAZARD
Be sure to read and follow the warnings
and precautions regarding TOXIC FLUID
HAZARD, and FIRE AND EXPLOSION
HAZARD on page 4, before operating this
pump.
Be sure the system is properly ventilated for your type
of installation. You must vent the exhaust to a safe
place, away from people, animals, food handling
areas, and all sources of ignition when pumping
flammable or hazardous fluids.
Diaphragm failure will cause the fluid being pumped
to exhaust with the air. Place an appropriate
container at the end of the air exhaust line to catch
the fluid. See F . 5.
IG
____________________________________________________________
F . 5
IG
10 308441ZAH
Installation
VENTING EXHAUST AIR
E F C
The air exhaust port is 3/4 npt(f). Do not restrict the air
exhaust port. Excessive exhaust restriction can cause
erratic pump operation.
If the muffler (P) is installed directly to the air exhaust
port, apply PTFE thread tape or anti-seize thread
lubricant to the muffler threads before assembly.
To provide a remote exhaust:
1. Remove the muffler (P) from the pump air exhaust
port.
2. Install a grounded air exhaust hose (T) and connect
the muffler (P) to the other end of the hose. The
minimum size for the air exhaust hose is 3/4 in.
(19 mm) ID. If a hose longer than 15 ft (4.57 m) is
required, use a larger diameter hose. Avoid sharp
bends or kinks in the hose. See F
3. Place a container (U) at the end of the air exhaust
line to catch fluid in case a diaphragm ruptures.
B
A
D
. 4.
IG
KEY
A Air supply line
B Bleed-type master air valve
(required for pump)
C Air regulator
D Air line quick disconnect
E Master air valve (for accessories)
F Air line filter
P Muffler (not included on Model
No. 253485)
T Grounded air exhaust hose
U Container for remote air exhaust
T
U
P
03267A