Energy Guide

Page 39 of 104 Report No.: HK2107050725-SR
UL 507
Clause Requirement + Test Result - Remark Verdict
TRF No. UL507A
27.13 When a fan is provided with a timing or
temperature device that automatically starts the
fan, the automatic restarting of moving parts shall
not result in a risk of injury to persons. See 81.2.
N/A
27.14 Automatic restarting of a fan provided with an
automatically reset thermally actuated device, such
as a room thermostat or a motor thermal protector,
shall not result in a risk of injury to persons. See
81.2.
N/A
27.15 A permanently connected fan employing a factory
wired component solid-state speed control shall
include a positive marked “off” position provided by
an air-gap-type switch that complies with the
applicable requirements in the Standard for
General-Use Snap Switches, UL 20, the Standard
for Switches for Appliances – Part 1: General
Requirements, UL 61058-1, or the equivalent. This
marking shall be represented by the word “off”, the
symbol “O”, or a visual indicator.
N/A
28 Interlocks P
28.1 A moving part that could cause injury to a person is
considered to be guarded if protected by a cover
with an interlock that complies with one of the
following conditions:
a)The part stops moving within 3 seconds after the
cover is opened; or
b)The interlock prevents the cover from being
opened until the part stops moving.
P
28.2 Operation of an interlock in normal use shall not
inconvenience the operator so as to encourage
deliberate defeat of the interlock.
P
28.3 An interlock shall be located so that unintentional
operation is unlikely. The interlock shall not be
readily defeatable without damaging the product, or
without making wiring connections or alterations.
P
28.4 An interlock that is required to reduce a risk of
electric shock or injury to persons shall withstand
100,000 cycles of operation controlling a load not
less than that controlled in the air cleaner, and
shall function normally upon completion of the test.
N/A