DL8000 Preset Instruction Manual
2-4 Installation and Use Revised February-2016
Planning is essential to a good installation. Because installation
requirements depend on many factors (such as the application, location,
ground conditions, climate, and accessibility), this document only
provides generalized guidelines.
2.1.2 10BSecuring the Cover to the Class I Zone I Case
The DL8000 ships from the factory with the cover secured to the case
with one stainless steel fastener (“bolt”). The remaining bolts are
bagged and included with the DL8000. You must install all bolts.
Warning
Failure to install ALL cover bolts will compromise the flame-proof
characteristics of the enclosure.
Caution
The flanges between the case and the cover create a flameproof joint.
Before you secure the cover to the case, make sure the surfaces are
clean and free of damage.
To secure the DL8000 cover:
Notes:
You must use a torque wrench for this procedure.
The bolt in position 9 (see Figure 2-3) is factory-installed. Be sure
that the bolts you install in positions 12 and 8 are the two longer
bolts with pre-drilled holes (for the Weights & Measures seal wires).
1. Swing the DL8000 cover up against the case.
2. Insert a bolt in position 1 (refer to Figure 2-3) and finger-tighten the
bolt until you feel resistance.
3. Insert a bolt in position 2 (refer to Figure 2-3) and finger-tighten the
bolt until you feel resistance.
4. Repeat step 3 for bolts in positions 3 through 16.
5. Using a torque wrench, tighten the bolt in position 1 to
specifications (24 to 29 Newton/meters or 18 to 21 foot/pounds of
force).
6. Tighten bolts in positions 2 through 16 to specifications.
Caution
Tighten the bolts in the numeric order shown in Figure 3-3 to prevent
deforming the cover and risking the integrity of the seal between cover
and case. You must install all the bolts.
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