K-Patents PR-23 - Manual (Page 136)

128 PR-23 instruction manual
9.10.2 Installation
Sensor wiring must follow drawing WRG-342, see Figure 9.33 on next page, Figure 4.3
on page 21 and Figure 4.6 on page 24.
Important: The FM unit installations must comply with the relevant requirements
of National Electrical Code (ANSI/NFPA 70) for Division 2 Hazardous (Classified) Lo-
cations and all instructions in this manual. All wiring of PR-23-...-FM systems must
run in a conduit.
Important: Tampering and replacement with other than K-Patents original
components is not allowed because this may affect adversely the safe use of the
system.
Note: Sensor connector shall not be connected or disconnected when the circuits are
energized. Switch OFF the power from Indicating transmitter DTR external power
switch before disconnecting sensor cable from sensor. After connecting sensor cable
back to the sensor you can switch power on again.
Important: Provisions shall be made to prevent the rated voltage from being ex-
ceeded by transient disturbances of more than 119V.