Singer SDHM-10L SMART OUT, Instruction Manual

Page: 23 / 60

23
ENGLISH
11.Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit with-
out ensuring that this will not exceed the permissible voltage and current per-
mitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while
live in the presence of a
fl ammable atmosphere. The test apparatus shall be
at the correct rating.
Replace components only with parts speci
fi ed by the manufacturer. Other parts
may result in the ignition of refrigerant in the atmosphere from a leak.abling
Check that cabling will not be subject to wear, corrosion, excessive pressure,
vibration, sharp edges or any other adverse environmental effects. The check
shall also consider the effects of aging or continual vibration from sources such
as compressors or fans.
12. Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure,
vibration, sharp edges or any other adverse environmental effects. The check
shall also consider the effects of aging or continual vibration from sources such
as compressors or fans.
13. Detection of fl ammable refrigerants
Under no circumstances shall potentially sources of ignition be used in the
searching for or detection of refrigerant leaks. A halide torch (or any other de-
tector using a naked
fl ame) shall not be used.
14. Leak detection method
For systems containing fl ammable refrigerants, the following methods for de-
tecting leaks are acceptable:
Electronic leak detectors can be used for the detection of
fl ammable refrig-
erants, but the sensitivity may not be suf fi cient or may require recalibration
(the instrument calibration should be performed in a refrigerant-free environ-
ment) to ensure that the leak detector does not become a potential The ignition
source, and applies to the measured refrigerant, the leak detector should be
set to the lowest
fl ammable concentration of the refrigerant (in percent), cali-
brated with the used refrigerant and adjusted to the appropriate gas concentra-
tion test range (max. 25%)
The leak detection
fl uid is suitable for most refrigerants, but do not use oxygen-