DP Pumps Hydro-Unit Utility Line F, Инструкция по установке и эксплуатации

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9 Trouble-shooting
9.1 Trouble-shooting: pressure booster system
WARNING
Improper work to remedy faults
Risk of injury!
Ø
For any work performed to remedy faults, observe the relevant information
given in this operating manual and/or in the product literature provided by
the accessories manufacturer.
NOTE
Please contact DP Service before carrying out any work on the pump's internal
parts during the warranty period. Non-compliance will lead to forfeiture of
warranty cover and of any and all rights to claims for damages.
If problems occur that are not described in the following table, consultation with the DP
service is required.
A
Pressure booster system cuts out.
B
Pressure fluctuations on the discharge side.
C
Pressure booster system does not start up.
D
Pump running but not delivering water.
E
Insufficient delivery of pressure booster system.
F
Discharge-side pressure too low.
G
Discharge-side pressure too high.
H
Leakage at mechanical seal.
I
Motor/pump overheated.
J
Motor protection switch triggered.
K
Pressure booster system does not stop.
L
Excessive starting/stopping of pressure booster system.
M
Motor overheated.
Table 21: Trouble-shooting
A B C D E F G H I J K L M Possible cause Remedy
4)
✘ - ✘ - - - - - - - - - - Dry-running protection device not
connected Connect or bridge.
✘ - ✘ - - - - - - - - - - Mains supply interrupted Check and remedy defect if possible.
✘ - ✘ - - - - - - ✘ - - ✘ Phase failure Check individual phases and fuse.
✘ - ✘ - - - - - - ✘ - - ✘ Motor protection switch triggered or
set incorrectly / pump seized.
Compare setting with the motor’s
rating plate data and set accordingly.
Press reset key.
✘ - ✘ - - - - - - - - - - Control current fuse tripped. Check control current fuse. Replace if
required.
- - ✘ - - - - - - - - - - Lack of water Check inlet pressure.
- - ✘ - - - ✘ - - - - - - Inlet pressure higher than specified in
the purchase order Fit pressure reducer; contact the
manufacturer.
- - - - ✘ ✘ ✘ - ✘ ✘ ✘ - - Incorrect power supply; incorrect
speed. Check the mains power supply.
- ✘ ✘ ✘ ✘ ✘ - - ✘ - - ✘ ✘ Shut-off valves fully or partially closed Check, open as necessary.
4
Before any work on pressure-retaining components, release the pump set pressure and de-energise the pump set.