Viking Oxeo, Руководство по установке и обслуживанию

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Inst. and Maint. Manual | Oxeo PR LCP | F_101921 Rev 02 | 10-2022 | en
147
2. Pressurize the time delay unit and measure the delay time. Check the pressure on the test pres-
sure gauge.
If necessary, reset the delay time; see “Resetting the delay time” on page 147.
Otherwise, continue on to “Establishing the functional condition” on page 148
Resetting the delay time
3. Document the reason for changing the delay time and the value in writing (installation certifi-
cate) and have it confirmed by an expert.
4. Insert a hexagon wrench (size 4) into the front face of the adjusting spindle and set the time.
5. Test the delay time by pressurizing with test gas (nitrogen; 7.5bar (109 psi)). Check the pressure
on the test pressure gauge. Adjust the adjusting spindle until the required delay time is reached.
6. Secure the adjusting spindle using sealing wax.
The permitted deviation from the target value is:
•
± 10% when a pressure of 10 bar (145 psi) is applied [according to EN12094-2
and VdS]
•
+20/-0% [according to NFPA2001 and UL/FM]
The delay time can be infinitely set from 10 to 60 seconds (7 to 55.5 seconds in accor-
dance with UL/FM requirements).
One rotation gives a time change of approx. 3.2 seconds.
An adjustment in the clockwise direction reduces the delay time.
An adjustment in the counterclockwise direction extends the delay time.
The permitted deviation from the target value is:
•
± 10% when a pressure of 10 bar (145 psi) is applied [according to EN12094-2
and VdS]
•
+20/-0% [according to NFPA2001 and UL/FM]