Avtron 1035409, Manual

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Installation
Avtron Outdoor Load Bank • Part Number K875A 1035409
3-4
D.
Connect an ohmmeter across the air switch normally open terminals.
E.
Run ohmmeter wiring outside of the unit and temporarily install access panel.
F.
Reapply fan/blower voltage and control power.
G.
Start fan(s), allowing them to come up to speed, approximately 10 seconds. The
normally open contacts should close. If more than one fan/blower, all must be
operating before continuing.
H.
Press fan/blower stop button. Count down the number of seconds before switch
opens. It should take 3-5 seconds. If not, adjust the air switch by turning the screw
on the air switch out to increase time. (Turning in decreases time.)
I.
Once 3-5 seconds have been established, repeat for the other air switch(es) if
applicable.
J.
Stop fan(s) and remove all sources of power from the Load Bank.
K.
Remove access panel, remove ohmmeter wiring, and replace factory wiring. Replace
access panel.
This checkout procedure is intended to be a guide to Load Bank installations in general. Special
installation considerations not addressed herein may be necessary due to installation site or
environment. Any questions or concerns regarding Load Bank installation should be directed to
Avtron Field Service at (216) 573-7600.
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W A R N I N G
It is vitally important to install the Load Bank properly. Installation
errors may result in a catastrophic failure. The airflow switch, a
protective device in the Load Bank, will guard against some of these
problems. If protective circuitry prevents application of the load,
determine the source of the problem. DO NOT DISABLE THE
AIRFLOW SWITCH. This causes a safety hazard and voids our
warranty. The following installation instructions are critical to the
safe operation of the Load Bank.
Refer to the SAFETY
CONSIDERATIONS section of this manual.
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