Before Starting An Atex-Approved Pump - Grundfos NB Montage- Und Betriebsanleitung

4. Identification
The nameplate on the pump head gives the following details:
• Data for the standard pump and
• data for the ATEX marking
- Technical file no.
- Serial no.
- Ex category
Type
NB 80-315/320 A-F-A-BAQE
Model
A 96539056 P2 0426 0001
Q m /h 3 H
127
p/t bar/°C
16/120
MAX
II 3Gc120°C
m n
min -1
33 1460
Made in
HUNGARY
Tech.file
96528409

5. Before starting an ATEX-approved pump

Check list
This check list must be strictly observed:
1. Check that the ATEX rating of both motor and pump corre-
sponds to the specified category.
See section 3. Scope of ATEX categories for NB, NBG, TP,
TPD pumps
If the motor and pump categories differ, the lower rating is
valid.
2. Check that the rubber parts of the pump are as ordered, see
nameplates.
3. Check that the shaft can rotate freely.
There must be no mechanical contact between impeller and
pump housing.
4. Check that the pump has been filled with liquid.
The pump must never run dry.
5. Check the direction of rotation of the motor, see arrow on top
of the fan cover.
6. Check that the liquid temperature never exceeds the maxi-
mum liquid temperature (t
max
7. Avoid overheating of the pump.
Operation against a closed discharge valve may cause over-
heating. Install a bypass with a pressure-relief non-return
valve.
8. The pump must be re-vented
- if the pump has been stopped for a period or
- if air has accumulated in the pump.
) stated on the nameplate.
Subject to alterations.
5