Refitting The Cartridge And Cover - ABB WaterMaster Instruction Manual

Electromagnetic Flowmeter
WaterMaster

4.8 Refitting the Cartridge and Cover

Warning. Ensure the transmitter is isolated from power supplies before refitting the cover.
Caution. To avoid damaging the cartridge during refitting, do not overtighten the cartridge screws.
C
C
D
Fig. 4.20 Refitting the Cartridge and Cover
Referring to Fig. 4.20:
1. Confirm that the cartridge to be fitted is of the correct power supply type by checking the label
on the side of the cartridge:
– AC cartridges have one black label on the cartridge side.
– DC (and low voltage AC) cartridges have two red DC labels – one on the cartridge side and
one on the cartridge rear plate.
2. Align the three cartridge screws
until the cartridge is held in position.
3. If necessary, rotate the cartridge to the required orientation before refitting the cover – see Fig. 4.8,
page 20 for details.
4. For high integrity/security installations, set DIP switch SW1 to the 'ON' (Read-only) position – see
Fig. 4.19, page 30.
5. Align the transmitter cover with the housing and tighten the four cover screws
6. For high integrity/security installations or where MID is required, fit anti-tamper seals to the security
D
fixtures .
IM/WM Issue 7
B
D
C
B
C
B
with the cartridge housing pillars and tighten the screws carefully
D
A
D
B
24V
Black Label on
AC Cartridge Side
4 Electrical Installation
Red Label
On DC (and
Low Voltage
AC) Cartridge
24V
Rear Plate
Red Label on DC
(and Low Voltage AC)
Cartridge Side
C
carefully.
A
31