MVE Biological Systems
TEC 3000 Operating and Maintenance Freezer Manual
13289499 Rev H •
125
Battery Backup Replacement and Installation
General
The freezer backup batteries (BB) can be replaced every five years or if the BB voltage has
dropped below 21 VDC. The TEC3000 will start to lose functionality when the BB is below 18 VDC.
To test any suspect BB, disconnect the AC power and allow freezer to run for 30 minutes; the
power failure (PF) alarm should trigger. While it is still in PF alarm allow the freezer to perform a fill
still using the BB, and once it has reached its high level set point measure the BB voltage. If the
voltage measures 24 to 27 VDC the batteries are good. In any case, the best approach is to
always replace a suspect battery or if the battery age is more than five years old.
Note:
New batteries may need to be charged for several hours before it is able to power
the TEC3000. The TEC3000 will constantly monitor, charge, and sense the current in its
battery circuit. With its main power connected, the TEC3000 will constantly produce a 27
VDC trickle charge to keep the batteries fully charged.
This installation procedure applies to the following models:
HEco Series, Cabinet Series, and MVE (Open Tops) Series -- Use Battery Backup PN:
11864171
Variō Series, Stock Series, and High Efficiency Series -- Use Battery Backup PN:
12885791
Each BB utilizes two internal batteries (PN: 10718155). If performing preventative maintenance,
then it is recommended to purchase 2x 10718155 and replace the internal batteries. See the
Battery Replacement section below for replacement instructions.
TOOLS REQUIRED
Phillips Screwdriver
Small Flat Head and Phillips Screw Driver
Volt/Ohm Meter
Wire Ties
UNPACKING
Unpack the assembly and inspect for damage. If any damage is found, a freight claim should be
filed with the carrier as soon as possible. Inspect to insure that all parts of the assembly are
included.
BATTERY BACKUP PREVENTATIVE MAINTENANCE AND NEW INSTALLATION
Reference the Battery Replacement section below if just replacing the internal batteries (2x PN
10718155) on the BB. This is the recommended preventative maintenance procedure.
Reference Table 1 and 2, and Figure 1 and 2 along with the Installation Instructions below if
purchasing a new Battery Backup Assembly (PN 11864171 or 12885791).
Note:
Due to running design changes, the actual assembly may differ slightly from Figure 1 and
Figure 2.
Battery Replacement
1. Make sure the power supply and the battery backup are disconnected.
2. Remove the battery backup assembly from the HE plumbing stack assembly by
removing the four Phillips head screws; Note: if an MVE Series, the battery backup is
mounted inside the rear cabinet.
Содержание MVE 1842P-150
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