background image

 

Part number 21729, Rev 4 

 

Configuration mode.  The “Relay” column shows whether each alarm is of sufficient priority to 
warrant activating the remote alarm contacts.   

Note that the remote alarm contacts will always have a 30 minute delay to 
activate to allow time for on-site personnel to react to and resolve the alarm 

condition.   

Upon the occurrence of any alarm, the top line of the message center display will list the alarm 
message as shown in the list.  In the case of multiple alarm conditions, the display will show 
each alarm message on the top line in a repeating sequence on three second intervals.  The 
alarms will appear on the message center ONLY when in RUN mode.  If the operator changes to 
a different mode, the alarm LED and the audible alarm will remain active, but the message 
center top line will display whatever the normal message would be in that mode. 

 

Description 

Message 

Audible 

Ring 

Back 

Relay 

High control probe temperature 

HIGH TEMP ALARM 

yes 

yes 

yes 

Low control probe temperature 

LOW TEMP ALARM 

yes 

yes 

yes 

Door is open 

DOOR OPEN  

Yes if 

˃

 1 

min. 

yes 

yes 

Power failure – loss of AC input 

voltage 

POWER FAILURE 1 

yes 

no 

yes 

Power failure – loss of 12V power 

supply 

POWER FAILURE 2 

yes 

no 

yes 

Power failure – output of 12V 

power supply is low with AC 

voltage applied 

POWER FAILURE 3 

yes 

yes 

yes 

Wrong power connected 

WRONG POWER 

yes 

yes 

yes 

High Ambient Temperature 

HIGH AMBIENT TEMP 

no 

n/a 

no 

Low battery voltage 

LOW BATTERY 

yes 

yes 

no 

High stage system failure 

H S SYSTEM FAILURE 

yes 

yes 

yes 

Low stage system failure 

L S SYSTEM FAILURE 

yes 

yes 

yes 

Air flow alarm (determined from 

temp probes) 

AIR FLOW PROBLEM 

yes 

yes 

no 

Low voltage alarm 

LOW LINE VOLTAGE 

yes 

yes 

yes 

High voltage alarm 

HIGH LINE VOLTAGE 

yes 

yes 

yes 

Control Probe failure 

CONT PROBE FAILURE 

yes 

yes 

yes 

Содержание GM-ULT-1786

Страница 1: ...bill and acknowledged by the carrier s agent driver at time of delivery Make sure you get a signed copy Send a written request for an inspection to the carrier B Concealed Damage This type of damage...

Страница 2: ...ional 6 Control menus 8 Alarms 8 Alarm Criteria 10 Door Open 11 Sensor Errors 12 Contacts and communications 13 Remote alarm contacts 13 Maintenance intervals 14 Maintenance procedures 14 Air filter 1...

Страница 3: ...The model and serial number is located on the serial tag which can be found on the interior left OR right upper wall of the unit For convenience you may want to record the following information here f...

Страница 4: ...in the default status with the words SYSTEM NORMAL in the message line which is the top line of the control display The other lines will display available operating modes You will note a pointer on th...

Страница 5: ...to 1 accept menu selections and value changes and 2 advance the active value through a row of values The BACK key permits you to scroll back through the values or menu The UP and DOWN keys permit you...

Страница 6: ...DATE 4 Follow the same process to set the date Pressing BACK at any time will cancel the entered values Changing the Temperature Settings 1 Navigate to the SETTINGS mode and press ENTER to access the...

Страница 7: ...change the code itself by addressing the SETTINGS menu Please note the two menus on the right and remember that the choice of whether or not a code is needed is made in the CONFIGURE menu but the cod...

Страница 8: ...he SETTINGS mode line and press ENTER 2 Scroll to the SET ACC CODE and press ENTER 3 Set the access code by using the UP and DOWN keys to change the value of each digit and using the ENTER key to move...

Страница 9: ...rms and also shows the method of notification The Message column shows what message will be displayed in the message center The Audible column shows if the audible device is activated The Ring Back co...

Страница 10: ...r top line will display whatever the normal message would be in that mode Description Message Audible Ring Back Relay High control probe temperature HIGH TEMP ALARM yes yes yes Low control probe tempe...

Страница 11: ...the door sensor is an input to the main control board and its status is to be part of the regular communication from the main control board to the display board AC LINE FAILURE Activates when the inp...

Страница 12: ...over 250 ohms indicating an open sensor or a reading below 20 ohms indicating a shorted sensor The same criteria will apply to the remaining probe failure alarms PROBE UNPLUGGED Control Heat Exchange...

Страница 13: ...pressors will turn on and remain on Heat exchanger probe failure Compressor control during pull down will revert to timed staging Condenser probe failure Alarm only no change in compressor control Amb...

Страница 14: ...have a 30 minute delay before they are tripped 2 Always double check the continuity of the NO and NC contacts 3 This procedure is for the Alarm only 24 VDC User supplied R 250 A 4 20mA signal is avail...

Страница 15: ...Defrost As needed Maintenance procedures Air filter In most laboratory conditions the air filter should be inspected monthly and cleaned once every three months Press the top of the filter cover to r...

Страница 16: ...prevents the door from closing properly the gasket should be cleaned with a soft cloth As a general rule a minimum of once a month is recommended When the door gasket is operating as designed the only...

Страница 17: ...to a known standard such as NIST The reference probe has to be installed through the access panel on the rear of the unit This is best accomplished when the freezer is at room temperature 2 Turn the f...

Страница 18: ...5 Amps is located below the chart recorder power connection Troubleshooting For information in addition to that listed in this manual please call the manufacturer and request help There is an addition...

Страница 19: ...insulated Security Key lockable door Passcode protectable control Refrigeration CFC free HP x 1 2 HP cascade Insulation 5 5 to 6 FIP urethane Door gasket 3 point sealing BTU rejection 2150 2370 2580...

Страница 20: ...without charge to the owner for parts service labor or any shipping or cartage costs Replacement or repaired parts will be warranted for only the unexpired portion of the original warranty ADDITIONAL...

Страница 21: ...LOOD OR OTHER EXTERNAL CAUSES LabRepCo LLC is not responsible for the repair or replacement of any parts that LabRepCo LLC determines have been subjected after the date of manufacture to alteration ne...

Страница 22: ...Part number 21729 Rev 4...

Отзывы: