Maintenance; Important Information Regarding The Refrigerant Used; Maintenance Activities; Disposal Requirements - Daikin Hydrocube EWWQ049KAW1M Manuel D'utilisation

Symptom 5.6: Flow switch is activated
P
OSSIBLE CAUSES
No water flow.
Symptom 5.7: Freeze-up protection is activated
P
OSSIBLE CAUSES
Water flow too low.
Inlet temperature to the evaporator is
too low.
Flow switch is not working or no
water flow.
Symptom 5.8: Compressor thermal protector is activated
P
OSSIBLE CAUSES
Compressor motor coil temperature
too high.
Symptom 6: Unit stops soon after operation
P
OSSIBLE CAUSES
The schedule timer is activated and
is in off mode.
One of the safety devices is
activated.
Voltage is too low.
Symptom 7: Unit runs continuously and the water temperature remains
higher than the temperature set on the controller
P
OSSIBLE CAUSES
The temperature setting on the
controller is too low.
The heat production in the water
circuit is too high.
Water flow is too high.
The circuit is limited.
Symptom 8: Excessive noises and vibrations of the unit
P
OSSIBLE CAUSES
Unit has not been fixed properly.
M
AINTENANCE
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.
If the unit is used for air conditioning application, the described
checks should be executed at least once a year. In case the unit is
used for other applications, the checks should be executed every
4 months.
Operation manual
15
C
ORRECTIVE ACTION
Check the water pump.
RESET
After finding the cause, the flow
switch is reset automatically, but the
controller still needs to be reset.
C
ORRECTIVE ACTION
Increase the water flow.
Increase the inlet water temperature.
Check the flow switch and the water
pump.
RESET
After temperature increase the
freeze-up is reset automatically, but
the circuit controller needs to be
reset.
C
ORRECTIVE ACTION
Compressor is not cooled sufficiently
by the refrigerant medium.
RESET
After temperature decrease the
thermal protector is reset
automatically, but the circuit
controller needs to be reset.
If the protector is activated
frequently, call your local dealer.
C
ORRECTIVE ACTION
Work according to the settings in the
schedule timer or disable the
schedule timer.
Check safety devices (refer to
Symptom 5: One of the following
safety devices is activated).
Test the voltage in the supply panel
and, if necessary, in the electrical
compartment of the unit (voltage
drop due to supply cables is too
high).
C
ORRECTIVE ACTION
Check and adjust the temperature
setting.
The cooling capacity of the unit is too
low. Call your local dealer.
Recalculate the water flow.
Check the "enable/disable capacity
limitation" remote contact.
C
ORRECTIVE ACTION
Fix the unit as described in the
installation manual.
Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply panel,
remove the fuses or open the protection devices of the
unit.
Do never clean the unit with water under pressure.

Important information regarding the refrigerant used

This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol.
Refrigerant type: R410A
(1)
GWP value: 2090
(1)
GWP = global warming potential
Periodical inspections for refrigerant leaks may be required
depending on European or local legislation. Please contact your local
dealer for more information.

Maintenance activities

The wiring and power supply must be checked by a
licensed electrician.
Field wiring and power supply
• Check the power supply voltage on the local supply panel.
The voltage should correspond to the voltage marked on the
identification label of the unit.
• Check the connections and make sure they are properly
fixed.
• Check the proper operation of the circuit breaker and the
earth leak detector provided on the local supply panel.
Internal wiring of the unit
Visually check the switch boxes on loose connections (terminals
and components). Make sure that the electrical components are
not damaged or loose.
Earth connection
Make sure that the earth wires are still connected properly and
that the earth terminals are tightened.
Refrigerant circuit
• Check for leaks inside the unit. In case a leak is detected, call
your local dealer.
• Check the working pressure of the unit. Refer to paragraph
"Switching the unit on" on page
Compressor
• Check on oil leaks. If there is an oil leak, call your local
dealer.
• Check for abnormal noises and vibrations. If the compressor
is damaged, call your local dealer.
Water supply
• Check if the water connection is still well fixed.
• Check the water quality (refer to the installation manual of the
unit for specifications of the water quality).
Water filters
• Check if the mesh width is 1 mm maximum.

Disposal requirements

Dismantling of the unit, treatment of the refrigerant, oil and any other
parts, should be done in accordance with the relevant local and
national regulations.
7.
EWWQ049~064KAW1M + ECB2+3MUCW
Packaged water-cooled water chillers
D-EOMHP01008-17EU_01