Techno Block WP Serie Manual De Uso Y Manutención página 30

How to lock the keyboard
1. Keep the
displayed and the keyboard is locked.
2. At this point it is only possible the viewing of the set point or the MAX o Min temperature stored and to
switch ON and OFF the light, the auxiliary output and the instrument.
To unlock the keyboard
Keep the and
ON/OFF function
By pushing the ON/OFF key, the instrument shows "OFF" for 5 sec. and the ON/OFF LED is switched ON.
During the OFF status, all the relays are switched OFF and the regulations are stopped;
N.B. During the OFF status the LED4 button is lighted.
10. WIRING
A wiring diagram, specific for the units of the WP-WS series, is enclosed with these use and maintenance
instructions.
11. MAINTENANCE AND REPAIRS
Suitable maintenance is crucial for obtaining longer life, perfect working conditions and high efficiency of the
unit as well as for ensuring the safety features provided by the manufacturer.
12 ROUTINE MAINTENANCE
Good operation of the unit requires the condenser to be cleaned periodically (frequency of cleaning depends on
the environment where the unit is installed).
Turn off the unit and clean it by blowing air from the inside outwards. Should no air jet be available, use a
long-haired brush and work on the outside of the condenser.
In case of water-cooled condensers have the unit cleaned by a plumber with special descaling agents.
WARNING
Use safety gloves to protect your hands from possible cuts.
WARNING
Disconnect the unit before working on it.
12.2 Periodical maintenance
Periodically check wear condition of electrical contacts and remote switches; if necessary replace them.
12.2 Service operations to be carried out by qualified technicians or by the manufacturer
Following operations shall be carried out by qualified technicians or by the manufacturer exclusively. Under no
circumstances the user is allowed to:
•
replace electrical components
•
work on the electric equipment
•
repair mechanical parts
•
work on the refrigerating system
•
work on the control panel, ON/OFF and emergency switches
•
work on protection and safety devices.
12.3 Troubleshooting
During operation following troubles may occur:
and keys pressed together for more than 3 s. The "POF" message will be
keys pressed together for more than 3s.