108
30AW
Maintenance
8
N°
Exchange
parts
name
Work procedure (IMPORTANT: Ensure gloves are
worn at all times to avoid risk of injury)
Remarks
Water
circuit
CAUTION:
To replace a water circuit part, first close the water
supply source valve and the valve of water pipe
connected to the unit.
(13)
Expansion
vessel
(Only H
versions)
1. Perform works from 1 to 4 of (1) and (3).
2. Remove the fixed band of the expansion vessel.
451tQDT
3. Remove the expansion vessel connection (flare nut).
4. Replace the packing to new one when installing the
expansion vessel.
IMPORTANT:
After the expansion vessel replacement repair,
open the water supply source valve and water
piping valve to pass water through the hydro unit, and
check that the expansion vessel connection has no
water leakage.
(14)
Relief
valve
1. Perform works from 1 to 4 of (1) and (2).
2. Remove the piping panel.
3. Remove the relief valve.
CAUTION:
The relief valve connection uses an O ring for water
TFBM#FDBSFGVMOPUUPTDSBUDIUIF0SJOHPUIFSXJTF
water leakage may occur.
IMPORTANT:
After the relief valve replacement repair, open the
water supply source valve and water piping valve to
pass water through the hydro unit, and check that
the relief valve connection has no water leakage.
Exiting water
Water Drain
Entering water
Water pump motor
Relief valve
BPHE
Water Pump
Flow switch
Automatic purge valve
Relief valve
Expansion vessel
Screw
Nut
Fixed band
on vessel
SM_30AW.indd 108
14-03-2011 14:46:40
Содержание 30AWH004HB
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Страница 39: ...39 30AW Inverter control size 008HB Electrical connections 4 SM_30AW indd 39 14 03 2011 14 42 42...
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Страница 120: ...120 30AW Spare Parts 9 For the spare parts refer to specific document SM_30AW indd 120 14 03 2011 14 47 00...
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Страница 137: ...137 30AW Additional Informations 11 11 1 Additional information SM_30AW indd 137 14 03 2011 14 47 25...