Graymills DDP .375' Pump OMI - Manual (Page 10)

10
Installation
Air Exhaust Ventilation
FIRE AND EXPLOSION HAZARD
Be sure to read FIRE OR EXPLOSION
HAZARD and TOXIC FLUID HAZARD
on page 2, 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 flam-
mable 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
Fig. 8.
WARNING
The air exhaust port is 3/8 npt(f). Do not restrict the air
exhaust port. Excessive exhaust restriction can cause erratic
pump operation.
To exhaust to a remote location:
1. Remove the muffler (11) from the pump air exhaust
port.
PRESSURIZED EQUIPMENT HAZARD
To reduce the risk of serious eye injury from
ice particles, never operate the pump with
the air exhaust port open. Ice may form
during pump operation, and ice particles will be ejected
from the port along with the exhaust air. If the muffler
(11) is removed, always connect an air exhaust hose to
the exhaust port.
WARNING
2. Install an electrically conductive air exhaust hose (X)
and connect the muffler to the other end of the hose.
The minimum size for the air exhaust hose is 3/8 in.
(10 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.
3. Place a container (Z) at the end of the air exhaust line
to catch fluid in case a diaphragm ruptures. If the fluid
is flammable, ground the container. See Fig. 8.
Fig. 8
VENTING EXHAUST AIR (Submerged Installation Shown)
See Fig. 4 for accessories
In a submerged installation (as shown), all wetted and non-wetted pump
parts must be compatible with the fluid being pumped.
01445A
Z
X
11