LT-33020(2)
©2013 Technifab Products, Inc.
7
Alarm Output
The Tank Switcher can trigger an external device such as
an auto dialer or alarm. This connector (far right in the
photo) requires a 2-pole plug available from Technifab.
The Tank Switcher sends a 24 volt DC signal when all
tanks have been depleted.
The pin closest to the notch in the connector is the
ground and the positive terminal is furthest away (see
photo). Refer to the specifications section for electrical
signal specifications.
24Vdc Neg. (-)
24Vdc Pos. (+)
The tank switcher utilizes air-actuated valves that will use either shop air or
process air. Many tank switchers use process air, which is preconfigured at the
factory. For shop air the
Pneumatic Actuated Valve Guidelines
, Technifab part
number literature LT-35569, has a more complete description of the differences
and shop air requirements. From LT-35569 the shop air requirements are:
Maximum pressure 250 psig (17 Bar).
Minimum pressure 50 psig (3.4 Bar).
5 SCFM (2.4 nl/s) minimum flow rate at the delivery point.
Perform a final check to ensure that all electrical connections are correct and that
the fittings and the bayonet connections are tight. The unit can then be plugged in
and the valves turned on to look for any leaks.
At this point you should refer to the Tank Switcher Owner’s Manual, LT-33013,
for more information on operating the unit.
Note:
Test the system from a warm fill situation to make sure an alarm situation does
not occur, especially if being used with biological freezers.
