envea STACK 602, Руководство пользователя

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STACK 602 9 Maintenance
ENVEA UK Ltd
(PC-000848-MA Issue 5, December 2021)
vii
4.4 Supplying Purge Air
– Purge Blower Unit
4.4.1 Mounting the Blower
WARNING! – ELECTRIC SHOCK
Only connect to an earthed supply. This unit is a Class 1 construction
and must be connected to a Protective Earth connection (GND).
WARNING! – ELECTRIC SHOCK
This product must be connected to a power supply of the same voltage
(V) and frequency (Hz) as indicated on the product rating plate and
provided in the
Technical Data
section of the relevant product
manual.
WARNING! – ELECTRIC SHOCK
Do NOT reverse Live (L) and Neutral (N)!
The Neutral line is not fused.
E
WARNING! – ELECTRIC SHOCK
Ensure that the mains isolator is clearly marked and easily accessible
(within a 2m / 6½ft. radius) to allow the equipment to be switched
OFF.
CAUTION!
The small purge air blower is supplied with 10 m (33 ft.) flexible
tubing.
Do NOT add any additional restrictions to the tubing, as this will
reduce the air supply to the sensor heads.
CAUTION!
Ensure the enclosure lid of the purge blower is tightened fully (using ¼ -
turn screws). This ensures the filter can operate fully to keep the air
clean.
The small purge blower is designed to be wall-mounted with the air purge and
power connections pointing downwards (see items 4 and 6,
Figure 5
below). Four
mounting feet are supplied to enable easy fitting. Two 10m lengths of flexible
blower hose are supplied as standard. Using the Y-splitter with ¼ ” BSP
connections, the hoses attach directly to provide purge air to both the Tx and Rx.
Ensure that the distance from the purge blower to the Tx/Rx is less than 10m to
allow easy connection.
NOTE
: Ensure the sensor heads can be removed from the stack and put on the ground or
platform without disconnecting the flexible hoses or cabling.
The filter is a replaceable part. To remove the filter, slacken the screw on the filter
bracket (see item 9,
Figure 5
below). For more information and technical data,
consult the small blower unit manual (see page
11
).
E
All colour references are based on the standard ENVEA cables supplied.