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4
Earth wiring
Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.
5
Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
6
Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
7
Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
8
Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
9
Oil leak
Check the compressor on oil leakage. If there is an oil leak, call
your local dealer.
10 Stop valves
Open the liquid line, discharge and suction (if provided) stop
valves completely.
11 Air inlet/outlet
Check that the air inlet and outlet of the unit is not obstructed by
paper sheets, cardboard, or any other material.
12 Power supply voltage
Check the power supply voltage on the local supply panel. The
voltage must correspond to the voltage on the identification label
of the unit.
Power supply connection and crankcase heating
In order to avoid compressor damage, it is necessary to
switch on the crankcase heater for at least 8 hours before
starting the compressor after a long period of standstill.
To switch on the crankcase heater proceed as follows:
1
Switch on the circuit breaker on the local supply panel. Make
sure that the unit is "OFF".
2
The crankcase heater is switched on automatically.
3
Check the supply voltage on the supply terminals L1, L2, L3, by
means of a voltmeter. The voltage must correspond to the
voltage indicated on the identification label of the unit. If the
voltmeter reads values which are not within the ranges specified
in the technical data, check the field wiring and replace the
supply cables if necessary.
4
Check the LED on the reverse phase protectors. If it lights up,
the phase order is correct. If not, switch off the circuit breaker
and call a licensed electrician to connect the wires of the power
supply cable in the correct phase order.
5
Check if the crankcase heaters are warming up.
After 8 hours, the unit is ready for operation.
General recommendations
Before switching on the unit, read following recommendations:
1
When the complete installation and all necessary settings have
been carried out, close all front panels of the unit.
2
The service panels of the switch boxes may only be opened by a
licensed electrician for maintenance purposes.
3
To avoid damage to the LCD display of the digital controller,
never switch off the power supply during winter.
Operation manual
5
O
PERATION
The ERAP units are equipped with a digital controller offering a user-
friendly way to set up, use and maintain the unit.
This part of the manual has a task-oriented, modular structure. Apart
from the first section, which gives a brief description of the controller
itself, each section or subsection deals with a specific task you can
perform with the unit.
Digital controller
User interface
The digital controller consists of an alphanumeric display, labelled
keys which you can press and a number of LEDs.
Digital built-in controller
Figure - Digital built-in controller
f
key, to enter the main menu
o
key, to start up or to shut down the unit.
p
key, to enter the safeties menu or to reset an alarm.
keys, to scroll up or down through the screens of a menu
g
(only in case W, X or C appears) or to raise, respectively
h
lower a setting.
q
key, to confirm a selection or a setting.
Digital remote controller (to be ordered separately)
Figure - Digital remote controller
o
key, to start up or to shut down the unit.
p
key, to enter the safeties menu or to reset an alarm.
key, to scroll through the screens of a menu (only in case
k
W, X or C appears) or to raise, respectively lower a
setting.
q
key, to confirm a selection or a setting.
u
key, to enter the readout menu.
s
key, to enter the setpoint menu.
z
key, to enter the user settings menu.
e
key, to enter the timers menu.
r
key, to enter the history menu.
t
key, to enter the info menu.
y
key, to enter the input/output status menu.
a
key, to enter the user password menu.
d
key, has no effect on ERAP units.
i
key, has no effect on ERAP units.
ERAP110~170MBYNN
Air-cooled condensing units
4PW22681-1
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