Daikin RZVF50 Installation Manual page 54

13.2 CAUTION (RZMF50~71BRV16)
THIS IS NECESSARY FOR AFTER
SERVICE, SO PLEASE REQUEST
CUSTOMER TO KEEP THIS PAPER.
CAUTION (NEW REFRIGERANT (R32 SERIES)
I I �
&
WARNING ELECTRIC SHOCK CAUTION
0 Caution about electric shock when do service inspection.
1. After intercept power supply, do not open outside panel for 1 O minutes.
2. Follow manufacturing label on electric box cover, please take off outdoor fan motor
connector to confirm voltage and body static electricity discharge.
0 General caution items when do service inspection
Caution to confirm compressor and fan motor running
Do not directly connect power input (3 Phase 50Hz) to compressor and fan motor.
(If not connect to print board (PCB), compressor and fan motor will be burned cut.)
Caution when recharge refigerant
1. To prevent the mixing of impurities, pressure resistance and contamination mix,
please use manifold gauge especially for R32.
2. Make sure to do Nitrogen blow if brazing when flare connection.
Apply ether oil or ester oil at inside flare only.
3. Do air light test at 4.1 7MPa
4. Do dry vaccum, make sure to charge refrigerant in liquid condition from liquid side
service port. (Compressor will be broken if charge from gas side service port.)
Caution when use outdoor PCB
Make sure to touch earth terminal and earthed metal before touch pcb,
to prevent electric shock.
Caution when break down diagnosis from letter code in remote control
Please refer to service guide or outdoor unit installation manual.
I Charging refrigerant I
• Charging the system with refrigerant
(For more infom,ation such as calculation method of additional refrigerant charge, additional
charge method, refrigerant charge caution, refer to the Installation Manual and Technical Guide.)
A. • For refrigerant charge, be sure to charge from the service port of the liquid side stop
£.!.l valve in liquid states.(lf you charge from the service port of the gas side stop valve,
it may break the compressor.)
• Never charge other than the specified refrigerant. (It may cause fire and bursting.)
Table 1. Chargeless piping length
Liquid piping size Pipe length which is not required additional charging
¢ 9.5 x tO.Bmm
1. In case of additional refrigerant charging
Please add refrigerant amount according to the following table.
Outdoor Liquid piping size
RZMF 50,71 BRV16 ¢ 9.5 x t0.8mm
2. Total refrigerant charging (Details please see service guide)
1. Please recover the refrigerant until becoming 0.09 MPa (gauge pressure: -0.011 MPa)
or less by the refrigerant recovery machine from slop valve service port
Qi<µd·gas side) at the same time.
2. Exchange service parts · modify leak point
3. Perform airtightness test · airi)Urge.
Please refer installation manual of outdoor unit or service guide.
4. Charge refrigerant aroount selected by table 2 from li<µd stop valve service port
Caution Do not tum on pa,ver during ev!DJation. The motor may be damaged
due to vacuum dischage.
Table 2 Charae refriaerant amount (After a leak etc ) ...
Outdoor Liquid piping size
RZM F 50 BRV16 ¢ 9.5 x t0.8mm
¢ 9.5 x t0.8mm
RZMF 71 BRV16
• Making a record of the added refrigerant charge amount
Be sure to record the piping length and added refrigerant charge amount or refrigerant recharge amount
with an oil-based or other indelible marker so the figures will not fade over time.
This information is necessary for after service and maintenance.
Liauid oioina size
Refrioerant oioino lenath
Additional refrigerant charging
Recharge of refrigerant
+15 m or less
15m
Piping length over chargeless,
Pipe length which
R32 additional amount (kg)
is not required
additional
charging
15m
0.375
Pipng length, R32 complete
additional amount (kg)
,s m 30m
5~10m
or less or less
1.09 1.09 1.465
1.30 1.30 1.675
¢ 9.5mm x tO.Bmm
m
kg
kg
How to execute a pumping-down
The outdoor unit is equiped with a high pressure switch to protect the compressor.
I I Never short-circuit the high pressure switch during pump-down operation
Caution
• It is not allowed to let the refrigerant out into the air.
The refrigerant should be recovered completely.
• Although pumping-down operation allows most of the refrigerant to be recovered in a short
period of time, some refrigerant will remain inside the indoor unit and the refrigerant piping.
Using a refrigerant recovery machine, recover remaining refrigerant from the stop valve
service port until the pressure falls to 0.09MPa (gauge pressure:-0.011 MPa) or less.
• Be sure to execute the pumping-down before refrigerant piping and wiring is taken off.
OFor pumping-down operation
r
1. Please follow the caution about electric shock when service inspection J
which attached on Top panel (Caution : Do not take off the connector X106A)
2. To prevent electric shock, please protect power input terminal block by insulation sheet
refer to below figure.
3. Turn on the power supply and carry out pumping-down operation according to the following procedure.
Outdoor Unit figure
hi..
To prevent electric shock when inspection, protect by use
ill
insulation sheet on ower in ut terminal block and print board A2P
OFor pumping-down operation
hi..
Do n ot remove the indoor unit until pump down operation finish.
ill
(It is dangerous when indoor fan automatically starts the operation.)
Pertom, pumping-down operation using the following procedure
Procedure
1 Confirm that stop valves both on
the liquid and gas sides are open.
2 Push the pumping-down button (BS1) on the
PC board of the outdoor unit for 5 seconds.
Close the stop valve on the liquid side
3
securely about 2 minutes after the
compressor started operation.
Once the compressor operation stops after
2 to 5 minutes, close the stop valve on the
gas side securely.
4 Turn off the power supply.
• If after finishing pumping-down operation the
outdoor unit does not operate, even when the
remote controller switch is turned on, the remote
controller may or may not indicate "U4".
But it is not a malfunction.
• To force of operation, turn off the main
power supply and turn it on again. Make sure
that stop valves both on liquid and gas sides are
open and be sure to operate the unit in cooling
operation during test run.
A,.. When installing and relocating, be sure to install the earth leakage breaker to protect
ill
from the electric shock disaster and fire due to leakage of electricity. For installing the
earth leakage breaker, request to the qualified electrician.
How to confirm of running condition by LED
When the power supply turns "ON", you can check
diagnosis of failure by service monitor (AP2)
* · · ·
on the outdoor print board LED
� ... LED light on
LEDfrash
e • • • LED light off • .. Not relate with diagnosis
LED
HA� P �H� 1 � P
* •
lc-c'-'
--c+ ,..,
Red
Green
Normal
Outdoor PCB defect Note1
¢-
*
•
Power input abnormal or outdoor PCB defect (Note2)
Protection device running (Note3)
¢-
(NOTE 1) Power off for more than 5 seconds, power ON again,
and confim, the diagnosis again.
(NOTE 2) Power off for more than 5 seconds, take OFF connection wiring
( indoor transmittion ) and power ON again. If after 10 seconds,
I J
outdoor PCB shows HAP it means indoor PCB defected.
(NOTE 3) There is phase internuption.
(NOTE 4) Previous abnormal history will be continuing display until power OFF.
After inspection, please power OFF.
Ocaution about break down diagnosis by remote control letter code.
Please refer to service guide or outdoor unit installation manual.
54
(for example,when moving or
reinstalli n g an i n door or outdoor uni t )
Insulation sheet
Protection method
Precaution
Compressor and outdoor unit fan will start
operation automatically. Indoor fan may auto-
matically start running. Pay attention to this.
• Do never leave the outdoor unit unattended
with opened front panel when power supply
is on.
• In case the stop valve on the liquid side is
not securely closed during compressor
operation, pumping-down operation cannot
be executed.
When you work alone, carry out after closing
the front plate. After turning the power supply
off, remove the insulation sheet.
Liquid stop valve
Close �
Gas stop valve
CloseEia
. . .
(ITEM)