Gast ROA Series Laboratory - Manual (Page 2)

INSTALLATION
ƽ
WARNING To avoid risk of electrocution do not
use this product in an area where it
could come in contact with water or
other liquids. If exposed to the ele-
ments, it must be weather protected.
ƽ
CAUTION Do not block the flow of cooling air
over the pump in any way.
Mounting the Pump
ƽ CAUTION
Remove the plastic plugs in the
intake and exhaust ports before
operating unit.
The pump may be installed in any orientation as long as
the flow of cool, ambient air over the pump is not
blocked. To reduce noise and vibration, use shock mounts
and affix to a stable, rigid operating surface.
Plumbing
To prevent air flow restriction, use pipe and fittings that
are the same size or larger than the threaded ports of the
pump. NOTE: Be sure to connect the intake and exhaust
plumbing to the correct inlet and outlet ports.
Accessories
Filters and mufflers are supplied on some models. Check
periodically and replace when necessary. Consult a Gast
Representative for filter recommendations. For best
results, install relief valves and gauges at the inlet or
outlet, or both, to monitor performance.
Relief Valve
ƽ
WARNING Do not touch relief valve as it becomes
very hot during operation and will burn
skin on contact. Wait until unit has
been turned off and allowed to cool
before touching it.
A safety relief valve is provided on standard
compressors and is preset at factory. Do not exceed
or adjust safety relief to pressures other than those
preset at factory.
ƽ
WARNING Do not unscrew relief valve head
entirely off while unit is operating.
Ejecting valve parts could cause
severe injury.
Wiring
ƽ WARNING
Incorrect wiring can result in electric
shock. Wiring must conform to all
required safety codes and be
installed by a qualified person.
ƽ WARNING
All power to the motor must
be de-energized and disconnected
when servicing.
Grounding Instructions
Check with a qualified electrician or serviceman if
the grounding instructions are not completely under-
stood, or if in doubt as to whether the product is
properly grounded. Do not modify the plug pro-
vided; if it will not fit the outlet, have the proper
outlet installed by a qualified electrician.
For All Grounded, Cord-connected Products:
This product should be grounded. In the event of an
electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric
current. Some units are equipped with a cord having a
grounding wire with an appropriate grounding plug. The
plug must be plugged into an outlet that is properly
installed and grounded in accordance with all local codes
and ordinances.
ƽ
DANGER Improper installation of the ground-
ing plug can result in a risk of electric
shock.
If repair or replacement of the cord or plug is necessary,
do not connect the grounding wire to either flat blade
terminal. The wire with insulation having an outer
surface that is green, with or without yellow stripes, is the
grounding wire.
For A Grounded, Cord-connected Product Rated
Less Than 15 Amperes And Intended For Use On A
Nominal 120v, Or 220-240 Volt Supply Circuit:
This product is for use on a nominal 120v, or 220-
240 volt circuit, and has a grounding plug. Make
sure that the product is connected to an outlet having
the same configuration as the plug. No adapter
should be used with the product.
OPERATION
ƽ
WARNING Solid or liquid material exiting the
unit can cause eye or skin damage.
Keep away from air stream.
ƽ
WARNING Always disconnect the power before
servicing. The motor may be ther
mally protected and will restart
automatically when it cools if the
thermal protection switch is tripped.