Operation
H-SEM
10
Instruction 3015-4584
3.6 Standby Mode
After the monitor has been turned ON and allowed to warm up, the monitor can be placed into a Standby
Mode, ready for operation without waiting an additional 15 minutes before using. While in standby, the
monitor will stop taking gas samples and purging itself from the internal purge-air bag.
Place the monitor into its Standby Mode by pressing both the
ENTER
and
ESC
buttons at the same time.
Take the monitor out of standby by again pressing both the
ENTER
and
ESC
buttons.
When the monitor is taken out of standby, the operator must refill the purge-air bag by pressing the
ENTER
button. Refilling the bag after coming out of standby re-establishes the monitor’s ambient
pressure reading and ensures that the purge-air bag is filled at the start of taking gas measurements.
WARNING:
Fill the purge-air bag in a clean, fresh-air environment that is at the same
temperature and humidity as the area being checked for gas. DO NOT fill the bag in
an area that is contaminated with refrigerant gas.
.
As soon as the purge-air bag has been refilled with fresh air, the
Data Display
screen appears and the
monitor resumes normal operation.
3.7 Working with the Gas Alarm
3.7.1 Gas-Alarm Light
If the detected gas level reaches the gas-alarm level as set by the
ALARMLVL
function (Page 8), the front
panel
ALARM
light will flash and the audible alarm, if activated (refer to
AUDALRM
function Page 8),
will start beeping. The
ALARM
light and audible alarm will automatically turn OFF once the detected gas
level drops below the gas-alarm level.
3.7.2 Silencing a Gas Alarm
Pressing the
SILENCE
button while the alarm circuit is activated causes the internal audible alarm to
turn OFF for a period of time as set by the
SILENCE
function (Page 9). The front panel
ALARM
light will
continue to flash, however, as an indication that an alarm condition still exists. The audible alarm will
reactivate at the end of the silence period if the detected gas level is still above the gas-alarm level.
3.8 Working with System Faults
3.8.1 Functional Overview
If a system malfunction occurs (see Fault Code list, Page 11), the front panel
FAULT
light will flash and
the audible alarm, if activated (refer to
AUDALRM
function Page 8), will start beeping.
3.8.2 Clearing / Silencing a Fault Alarm
The
FAULT
light and audible alarm will automatically turn OFF after the cause of the fault has been
eliminated.
Pressing the
SILENCE
button while a fault condition still exists causes the internal audible alarm to turn
OFF for a period of time as set by the
SILENCE
function (Page 9). The front panel
FAULT
light will
continue to flash, however, as a reminder that a fault condition still exists. The audible-alarm circuit will
reactivate at the end of the silence period if the cause of the fault has not been corrected.
STAND BY
PURGE AIR EMPTY
<ENTER> TO FILL
RECHARGING PURGE
AIR...
