Maintenance; Lubrication; External Silicagel Cartridge - ITRON MZ Mode D'emploi

bearing in mind that the hazardous area
classification during meter replacement
may differ from that during normal me-
ter operations .
• The meter shall not be exposed to flames,
ionising radiation, and ultrasound .
• Pulse values and maximum frequencies
are given in Annex 1 . Electrical charac-
teristics and wiring of the socket are giv-
en in Annex 4 . The wiring of the trans-
mitters is written on the name plate of
the meter .
• Ambient temperature conditions must
be considered, including possible addi-
tional heating effects due to other de-
vices in immediate vicinity .

5 Maintenance

When properly installed and put into ser-
vice, the MZ need no particular attention
and will provide you with many years of
satisfactory service .

5.1 Lubrication

Meters equipped with an oil pump have to
be periodically lubricated . Oil is delivered
with the meter . Specific oil has to be used,
for example
• Aeroshell fluid 12 MIL6085A
• Isoflex PDP38 (Klüber)
• Anderol 401D (Mobil Oil)
• Univis P38 (Shell)
6
Quantity of oil to be filled:
a) On commissioning to fill the volume
between the pump and the bearings
DN Oil vol . (cm
50/80 4
100 5
150/200 6
b) In Service
DN Oil vol . (cm
50/80 0,5
100 0,8
150/200 1,0
c) Recommended lubrication periodicity
Application Lubrication periodicity
Dry gas, no dust 6 months
Gas comprising Monthly
light condensates
and little dust
Gas with high Weekly
percentage
of condensates
and dust .
BIOGAS
applications

5.2 External silicagel cartridge

The meter can be equipped with an ex-
ternal silicagel cartridge for installation in
severe environment conditions . The car-
tridge has to be replaced when its colour
has changed . To replace the cartridge,
unscrew the old cartridge, remove the
protective plug of the new cartridge and
screw it into the totaliser .
) Push
3
20
25
30
) Push
3
2-3
4
5