Safety Devices; Cleaning; Connecting The Unit; Electric Connection - Techno Block UT 1 Notice De Mode D'emploi Et D'entretien

The tightness test should be carried out without any harmful gas; preferably use nitrogen or other inert gas. The
equipment used should include a pressure limiting device and a regulator with pressure gauge, so that the max.
safety value is not exceeded. Keep the system under pressure for at least 5 hours, making sure that pressure does
not drop (Note: this should be checked at constant ambient temperature). Connect the vacuum pump until a
pressure of 1 mbar is reached; keep compressor shut down valves closed and maintain the recommended vacuum
level for at least 60 minutes.Open compressor shut down valves and repeat vacuum operations.
Charge the unit with liquid refrigerant through the charge valve placed on the liquid line. (Note: if possible, do not
carry out any quick charge from suction point).
6.6

Safety devices

2
WARNING
Above devices have been developed to safeguard the operator's safety.

6.7 Cleaning

Clean the unit carefully. Remove any dust, foreign substances and dirt possibly deposited during handling.
Use detergents and degreasers.
ATTENTION
Solvents are not allowed.
7

Connecting the unit

ATTENTION
Before connecting the unit make sure that mains voltage and frequency
the values shown in the data plate. Voltage tolerance: +/- 10% compared to nominal
value.

7.1 Electric connection

Connect the unit after checking the panel components.
When choosing the protective device take the following into consideration: should the
current
at installation point be higher than 10 KA, install a limiting device which reduces its peak value to 17 KA.
mechanical safety devices
The following
1. Fixed front and side protections for evaporator and condensing unit, secured by
locking screws.
2. External fan protections placed on the evaporating unit, secured with screws.
The following electrical safety devices
a. Protection of fans (belonging to motors) against high power absorption; with
automatic reset.
b. High pressure switch (only for special components) to protect against excessive
pressure; with automatic reset.
are supplied:
are supplied:
1
correspond to
prospective short-circuit
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