
GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL
ROUTINE MAINTENANCE
PAGE 3.3.2
VERSION 0.2 2014-07-23
Checking Hardware
All hardware must be checked at least once a year. Thermal cycling from turning the GV5/GV3.5 on and
off will require more frequent checks.
To prevent damaging the hardware, ensure that the proper sized tools are used. In most cases,
hardware is metric.
A mounting surface or terminal that has changed colour indicates a loose hardware connection.
Check and, if necessary, retorque the ac input cables on terminal block TB1. See
“Connecting Ac Power” on page 2.5.1
of the GV5/GV3.5 Installation Manual to determine specific
torque values.
Battery Replacement
The controller assembly contains a battery backup circuit that provides a memory of the transmitter
time setting during ac power failure. See
“Replacing the Controller Module’s Battery” on page 3.3.7
.
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