B-2
“Oil-Less” Scroll Laboratory Air
4107 9006 25.11
B.5 Alarms
Dew points that exceed set points shall cause an
alarm condition at the control panel. When the
dew point exceeds the alarm set point, the alarm
contacts are de-energized. The alarm remains de-
energized until the alarm condition is cleared by
the operator. A high dewpoint alarm will activate
if the transmitter loses power or is disconnected
from the control system.
WARNING:
Respond to alarm conditions immediately.
An alarm condition on the dew point
indicates a dew point level exceeding
the maximum set point. Immediate
action to correct the problem should be
taken. Prolonged exposure to condensing
moisture can damage the Laboratory Air
equipment.
B.6 Maintenance
B.6.1 Repair Policy
Do not use a unit that is not functioning properly
until all necessary repairs have been made
and the unit has been tested to determine
that it is functioning in accordance with the
manufacturer’s published specifi cations. Contact
BeaconMedæs Technical Services
department at
1-888-4MEDGAS (888-463-3427) for assistance.
NOTE:
To ensure full reliability, have all
maintenance and testing done by a qualifi ed
technician. If this cannot be done, maintenance
and testing of those parts discussed in this manual
may be undertaken by a competent, trained
individual having experience in the repair of
devices of this nature.
WARNING:
Electrical shock hazard
No repair should ever be attempted by
anyone not having experience in the
repair of devices of this nature. Failure
to follow proper repair procedures can
result in serious injury.
CAUTION:
No maintenance and testing should
ever be undertaken or attempted by anyone not
having general experience in the repair of devices
of this nature. Also, to avoid damaging the unit or
any of its components, no maintenance and testing
should be undertaken by qualifi ed individuals
who are not familiar with the procedures in this
manual.
Replace damaged parts with components from
BeaconMedæs
. Test the unit after installation of
replacement parts to make certain that it complies
with the published specifi cations.
B.6.2 Maintenance Schedule
Maintenance Frequency
Action
Check fl ow
through
orifi ce
Weekly
Check for proper
fl ow
Check
transmitter
accuracy
Yearly
Verify dew point
sensor accuracy
(contact
BeaconMedæs
)
Replace
Sensor
Every 2 years
See Section B.9
Appendix B: Dew Point Transmitter
