Zehnder Pumpen ZKH 20, Installation And Maintenance Instructions For Contractors

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9
STANDARDS
ZKH 20
conforms to the European directive 2014/35/EU
on electrical safety.
10
DISASSEMBLY
If a breakdown occurs, any service on the unit should be carried
out by a qualified engineer. In particular the
replacement of the power cable.
Disconnect the electrical supply before carrying out work
on the unit.
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GUARANTEE
ZKH 20
Zehnder Pumpen is guaranteed for 2 years for parts
and labour, subject to correct installation and use of the unit.
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TROUBLESHOOTING
Disconnect the electrical supply before carrying out any work.
FAULT DETECTED
• The pump does not start
• The pump does not lift
PROBABLE CAUSES
• The pump is not
connected to the power
supply
• The lock pin has not been
removed.
• The unit is not level.
• Power cut
• Float blocked
• Condensates inlet pipe
blocked
• Non-return valve blocked
• Discharge pipe blocked
ACTION NEEDED
• Plug in the unit.
• Remove the lock pin.
• Please check the unit with
a spirit level.
• Check the mains voltage.
• Clean the ZKH 20 tank.
• Clean the ZKH 20 inlet pipe.
• Clean the valve.
• Clean the discharge pipe.
INSTRUCTIONS RESERVED SOLELY FOR
QUALIFIED PROFESSIONALS
OPTIONAL:
if you connect the brown and black wires to the
control relays on your boiler, it will be switched off if the water
level rises too high in the unit.
ATTENTION: The maximum current admissible for our detec-
tion system is 0.5A.
To protect the electrical components in the
ZKH 20
, once the
alarm has been triggered, any water continuing to fill the tank
comes out through the overflow outlets in the cover.
BEFORE TURNING THE DEVICE ON, MAKE
SURE YOU REMOVE THE PROTECTIVE LOCK PIN
FROM THE REAR OF THE DEVICE
INSTRUCTIONS INTENDED SOLELY FOR
QUALIFIED PROFESSIONALS
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