Energy Guide

Page 11 of 104 Report No.: HK2107050725-SR
UL 507
Clause Requirement + Test Result - Remark Verdict
TRF No. UL507A
b)The guarding is such that the probe illustrated
in Figure 9.1 cannot touch the leading edge of the
blade and hub when inserted as described in
9.2.6. For a reversible fan, both edges of the
blade are considered leading edges. When K is
greater than 29264, the probe shall not touch any
part of the impeller.
N/A
9.2.6
The portion of an impeller that entails a risk of
injury to persons shall be guarded so that the
probe illustrated in Figure 9.1 does not touch the
part when inserted with a force of 4.45 N (1 pound)
for a maximum of 5 seconds through any opening
in the guard.
N/A
9.2.7
During an examination to determine whether an
appliance complies with the requirements
specified in 9.2.6, the guards and impellers of
desk and stand fans are not to be removed before
examination.
N/A
9.2.8
When a part used to comply with the requirement
in 9.2.6 is made of a polymeric material, a sample
is to be exposed for 7 hours to air at 70°C (158°F).
While in the oven, the part is to be assembled to
the fan and the fan is to be in its intended operating
position. After the sample has cooled to room
temperature, the probe illustrated in Figure 9.1 is to
be inserted through each opening in the guard.
The probe shall not be able to touch any portion of
an impeller that can cause a risk of injury to
persons.
N/A
9.2.9
A guard employed to comply with the requirement
in 9.2.6 shall be attached to the fan in any of the
following ways:
N/A
a)Permanently; N/A
b)By means requiring the use of a tool or tools for
removal; or
N/A
c)By means not requiring the use of a tool or tools
for removal provided that the securing means
remain attached to the front or rear guard; and
N/A
9.2.10
The removal force specified in 9.2.9(c)(2) is to be
measured after conditioning the holding means by
removing and replacing the guard ten times in the
intended manner.
N/A
9.2.11
An enclosure, a frame, a guard, a handle, or other
part of the fan that is exposed to contact during
intended operation shall not be sufficiently sharp to
constitute a risk of injury to persons.
N/A