Helmer Scientific i.Series
®
and Horizon Series
™
Refrigerator - Pass-Thru
Service and Maintenance Manual
360429/A
8
2.3
Connect Backup Power
The monitoring system and chart recorder each have a backup battery system enabling a period of continuous operation if power
is lost.
Battery life varies by manufacturer as well as voltage level remaining. Providing full power is available and no battery-related
alarms are active, backup power for the monitoring system is available for up to 20 hours (the Low Battery alarm will activate after
approximately 18 hours of battery use). Providing full power is available, backup power for the optional i.Lock™ interlock feature is
available for up to 2.5 hours.
NOTICE
Before installing or replacing batteries, switch the AC power and backup battery switches OFF, switch the i.Lock key
switch OFF if installed and disconnect the refrigerator from AC power.
Notes
• The optional i.Lock™ interlock feature
(available only in Pharmacy models)
uses the monitoring system backup battery for
backup power in the event of power failure.
• The monitoring system will start on backup battery power alone. If the refrigerator was not previously connected to AC
power and the backup battery is switched on, the monitoring system will begin running on backup battery power.
• If AC power is lost, the monitoring system will automatically disable some features to prolong backup battery power.
Data collection will continue until backup battery power is depleted.
The backup battery and i.Lock switch (if installed) are located on top of the refrigerator. Removing the ventilated cover on the ante-
room (control) side allows access to the backup battery.
Monitoring system backup battery
i.Lock interlock key switch (if installed)
(supplies power to optional i.Lock interlock)
2.4
Prepare for Monitoring
The backup battery switch is switched OFF for shipping. Switch the backup battery switch ON to provide the monitoring system
and optional i.Lock interlock with backup power in the event of an AC power failure.
Temperature Probes
Notes
• Temperature probes are fragile; handle with care.
• Remote probes may also be introduced through the existing top or side (if included) ports, and immersed in existing
probe bottles.
• External probes should not be routed into the chamber through the door opening as this can cause issues with the
door seal.
• A solid ballast (if installed) should be placed in the bracket in a horizontal position in single door (226) models.
The secondary probe should be placed in a vertical position.
The location of probes varies by model. External probes may be introduced through the existing top port or through a side access
port if installed.
A solid ballast or probe bottle and container of glycerin have been provided with this unit. When using the probe bottle, mix the
glycerin with water to create a solution which simulates the product stored in the refrigerator. The product simulation solution
temperature reflects the product’s temperature during normal operation.
The probe bottle should contain 4 oz. (120 mL) of product simulation solution at a 10:1 ratio of water to glycerin.
i.Series
