Manntek DCC - Operation; General Notes and Daily Inspection

Operating Manual
PR-050823-0121 Version 161109 10 of 14
g. For sizes 2” and below, tape or paste performs satisfactory. When using thread tape, four wraps (covering all
necessary threads) are usually sufficient.
h. For sizes 2 1/2” and above, thread paste is recommended. If thread tape is used, eight wraps (covering all necessary
threads) are usually sufficient. Apply more wraps if necessary.
i. Over-tightening threads can be just as detrimental as insufficient tightening. For sizes 2” and below, hand tighten the
components and, with a wrench, tighten 3 full turns. For sizes 2 1/2” and above, hand tighten the components and,
with a wrench, tighten 2 full turns.
j. For stubborn to seal threads, apply a normal coating of thread paste followed by a normal layer of thread tape.
k. For extremely stubborn to seal threads, apply a normal coating of thread paste followed by a single layer of gauze
bandage followed by a single layer of gauze bandage followed by a normal layer of thread tape.
When this procedure is done, the connection becomes permanent. Extreme measures will be necessary to
disconnect these components. All other measures to deal the threads should be explored prior to use of this
technique.
The start-up may take place only when the DCCouplings has been mounted as instructed and the necessary
function tests and leak tests have been conducted by the approved authorities.
5 O PERATION
5.1 G ENERAL NOTES
Operators are obliged to provide qualified and trained personnel familiar with the handling of supply pipes,
safety couplings, any fluid being pumped as well as its danger potential. Such staff must also be familiar with
the applicable safety regulations and the regulations of the employer’s liability association. Notice also our
safety instructions (see chapter 2.1).
5.2 D AILY VISUAL INSPECTION
All couplings should be briefly inspected before each operation.
Inspect the coupling to be dry, clean and free of corrosion. Check for dirt and any obvious physical damage
(such as impacts, etc.).
Inspect the hose unit swivel for free rotation.
Inspect the tank- and hose unit for faultlessness and external signs of seizure.