Maintenance And Cleaning - NEPTUN classic NCTF-O 3000 Instrucciones De Uso

Maintenance and cleaning

Attention! Dangerous electrical voltage.
Possible consequences: Death or severe injury.
Protective measures:
• Electrical units and installations with a rated voltage of U > 12 V AC or U >30 V DC located in the water:
Isolate the units and installations (switch off and disconnect from the power supply) before reaching into the
water.
• Isolate the unit before starting any work.
• Secure the unit to prevent unintentional switching on.
Attention! Ultra-violet radiation.
Possible consequences: Eye or skin injury from burns.
Protective measures:
• Never operate the UVC lamp outside its housing.
• Never operate the UVC lamp in a housing that is defective.
Opening the filter housing and cleaning the different filters
E, F, G
Unscrew the branch valve (12) and the attachment elements. Pull the clamps on both sides of the bottom strainer
casing (2) to the side and lift off the top strainer casing (1). Remove the foam filter (3) and the UVC clarifying unit
including pump (20), and the fine foam filters (22), bio surface elements (23) and the gravel bag (24).
Clean the bottom strainer casing (2) and the top strainer casing (1) with clear water using a brush. Wash out foam
filters (3, 22), bio-surface elements (23) and the gravel bag (24) under running water. Do not use chemical cleaning
agents as they would kill the micro-organisms in the different filter media. At the beginning, this entails a reduced filter
capacity.
Cleaning the pump
H, I
Unscrew pump (28) from the UVC water housing (26). Unscrew the pump lid (27) counter-clockwise (bayonet closure)
and remove rotor (29). Clean all components using clean water and a brush. After cleaning the pump, reassemble in
the reverse order.
Opening and cleaning the UVC water housing
J
Note!
For safety reasons the UVC lamp can only be switched on when the unit head has been correctly fitted into
the casing.
The UVC water housing (J, 26) is fastened to the unit head (31) by means of a bayonet closure. Press on the engage-
ment lug (30) at the unit head (31), turn the UVC water housing (26) counter-clockwise and carefully pull it off the unit
head (31). Clean the UVC water housing (26) under running water. Check the quartz glass (33) for damage and clean
its outer face with a moist cloth.
Note: For an optimum filter performance, we recommend to replace the UVC lamp after approx. 8000 operating hours.
Refer to 'Replace UVC lamp'.
Closing the UVC water housing
P, Q, R
Check the O ring (37) at the unit head (31) for damage. Place the O ring (37) on the recess at the unit head (31), then
carefully push the UVC water housing (26) on the unit head (31) by applying medium pressure. While doing so, slightly
turn the UVC water housing (26) to ensure that the tenons (39) and the grooves (40) of the bayonet closure intermesh.
Turn the UVC water housing (26) clockwise against the stop and allow to engage.
Reassembling the unit
S, T, U, V
Bolt the pump (28) to the UVC water housing (26) using the union nut. Insert fine foam filter (22) in the bottom strainer
casing (2), place the bio surface elements (23) and the gravel bag (24) in the bottom strainer casing (2). Insert the UVC
clarifying unit including the pump (20). Insert the foam filter (3). Attach the top strainer casing (1) and press it onto the
bottom strainer casing (2) until the clamps engage in the bottom strainer casing. Important: Guide the connection
cable (7) through the cable opening at the bottom strainer casing (2) and clip with the cable kink protection in the
bottom strainer casing (U, 37).
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