Owner's manual

7
Installation
Mountings
CAUTION
The pump exhaust air may contain contaminants. If
needed, ventilate to a remote area to reduce possible
fluid contamination. See Air Exhaust Ventilation on
this page.
Be sure the mounting can support the weight of the
pump, hoses, and accessories, as well as the stress
caused during operation.
For all mountings, be sure the pump is secured with
screws and nuts.
WARNING
To reduce the risk of serious injury, splashing in the
eyes or on the skin, and toxic fluid spills, never
move or lift a pump under pressure. If dropped, the
fluid section may rupture. Always follow the Pres-
sure Relief Procedure on page 10 before you move
or lift the pump.
Air Exhaust Ventilation
WARNING
TOXIC FLUID HAZARD
Read the USING HAZARDOUS FLUIDS
and FIRE AND EXPLOSION HAZARD
sections on page 2 before you operate this
pump with flammable liquids.
Be sure the system is properly ventilated for
your type of installation. You must vent the
exhaust to a safe place, away from people,
sources of ignition, animals or food
handling areas when pumping flammable
or hazardous fluids.
If the diaphragm ruptures, the fluid being pumped is
exhausted with the air. Place a container at the end of
the air exhaust line to catch fluid in case the diaphragm
ruptures, and disconnect the pump.
The air exhaust port is 3/8 npt(f). Do not restrict the air
exhaust port. Excessive exhaust restriction can cause erratic
pump operation.
See Venting Exhaust Air in Fig. a. Exhaust to a remote
location as follows:
1. Remove the muffler (W) from the pump air exhaust
port.
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”
(10mm) ID. If a hose longer than 15 ft (4.57) is re-
quired, 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. See Fig. 1.
Air Lines
WARNING
Bleed-Type Master Air Valve and Fluid Drain
Valve
A bleed-type master air valve and a fluid drain valve
are required on your system.
The bleed-type master air valve relieves air trapped
between itself and the pump. Trapped air can cause
the pump to cycle unexpectedly, which could result in
serious bodily injury, including splashing in the eyes,
injury from moving parts, or contamination from
hazardous fluids.
The fluid drain valve reduces the risk of serious
bodily injury, including splashing in the eyes or on the
skin, or contamination from hazardous fluids. Install
the fluid drain valve close to the pump’s fluid outlet to
relieve pressure in the hose if the hose becomes
plugged.
1. Mount the air line accessories on the wall or on a
bracket. Be sure the air line supplying the accessories
is grounded.
a. The pump speed can be controlled in one of two
ways: To control it on the air side, install an air
regulator (Order Graymills Part No. FRL–2). To
control it on the fluid side, install a fluid valve
near the outlet.
Install a bleed-type master air valve downstream
from the air regulator, and use it to relieve trapped
air. See the Bleed-Type Master Air Valve and
Fluid Drain Valve warning on page 5. Locate
another bleed-type master air valve upstream from
all air line accessories, and use it to isolate the
accessories during cleaning and repair.
The air line filter removes harmful dirt and mois-
ture from the compressed air supply.
2. Install a flexible air hose between the accessories and
the pump air inlet. Screw the air line fitting into the
air inlet.
3. Do not restrict the exhaust port. Excessive exhaust
restriction can cause erratic pump operation.