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Installation, Operations and Maintenance Manual
Content
October 2020
Installation, Operations and Maintenance Manual
TR000058ENUS-02_10-20
Installation
Installation Precautions
WARNING
Make sure that the components and materials used in the uid handling system are
compatible with the uid and have the proper pressure rating. Failure to do so can result
in death, serious injury and/or property damage.
A regulator is not intended to be used as a shutoff device. When the regulator is not in
use, the inlet supply should be turned off. As a safety precaution, a pressure relief device
should be installed downstream of the regulator.
CAUTION
Do not open packaging until ready for installation or in a clean environment. Product is
cleaned in accordance with CGA 4.1 and ASTM G93, Verication Type 1, Test 1 and Test
2. With periodic verication of cleaning process to MIL-STD-1330D.
Inspect the regulator for physical damage and contamination. Do not connect the regulator
if you detect oil, grease or damaged parts. If the regulator, valve or accessory is damaged,
contact your local TESCOM representative to have the regulator cleaned or repaired.
CAUTION
Follow all laws, regulations and industry requirements for electrical wiring. All electrical
wiring must be terminated in an inaccessible location. Where the electrical housing is
separate from the regulator body appropriate wiring to connect the two assemblies shall
follow hazardous location requirements per applicable laws and regulations.
Possible consequences include but are not limited to:
a. Make sure the regulator and electrical housing is mounted securely.
b. Make sure the electrical power is turned off and locked out.
c. Connect external ground if required to electrical housing.
d. Remove electrical housing cover.
e. Remove power supply connector and (if used) the 4-20 mA output connector from
the electrical board. See Figure 2.
f. Feed power supply wires and (if used) the 4-20 mA output wires through the 1/2” NPT
port. See Figure 2.
g. Screw the power supply and (if used) 4-20 mA output wires to the connectors and
internal ground. See Figure 2.
h. Verify all connections before applying power. Make sure the supply power is in working
range of unit purchased.
i. If the 4-20 mA output is used, an isolated excitation voltage of 20-28 volts is needed.
The 4-20 mA output correlates to a thermocouple temperature reading of 50 to
400 °C / 122 to 752 °F. See Figure 2.
Notice
Should the thermocouple fail the analog output would read greater than 25 mA
and no electrical power will be supplied to the heating element. Disconnect
power and check wiring.
3.2
3.2.1
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