Daikin DRG0361DL00001S, Инструкция по эксплуатации

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49
SERVICING
S-8 Checking Contactor Contacts
SINGLE PHASE
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal injury
or death.
1. Disconnect the wire leads from the terminal (T) side
of the contactor.
2. With power ON, energize the contactor.
WARNING
Line Voltage now present.
VOLT/OHM
METER
T1
T2
L1 L2
CC
Ohmmeter for testing holding coil
Voltmeter for testing contacts
TESTING COMPRESSOR CONTACTOR
(Single Phase)
3. Using a voltmeter, test across terminals.
A. L1 - L2 - No voltage. Check breaker or fuses on
main power supply.
B. L2 - T1 - No voltage indicates CC1 contacts
open.
If a no voltage reading is obtained - replace the contactor.
THREE PHASE
Using a voltmeter, test across terminals.
A. L1-L2, L1-L3, and L2-L3 - If voltage is present,
proceed to B. If voltage is not present, check
breaker or fuses on main power supply..
B. T1-T2, T1-T3, and T2-T3 - If voltage readings are
not the same as in “A”, replace contactor.
VOLT/OHM
METER
CC
Ohmmeter for testing holding coil
Voltmeter for testing contacts
T1
L1
T3
L3
T2
L2
TESTING COMPRESSOR CONTACTOR
(Three Phase)
S-9 Checking Fan Relay Contacts
DSG:
The fan relays are incorporated into the control board. See
section S-313 for checking control board for single phase
gas models.
For 3 phase and belt drive models, the procedure for testing
the fan relay contacts will be the same as checking the
compressor contactor contacts (See section S-8).
DRC/DRH:
The E lectronic B lower T ime D elay R elay is used on PSC and
belt driven models.
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do so
may cause property damage, personal injury
or death.
Checking EBTDR High Voltage Contacts
1. With power off, remove wires from terminals NC,
COM, and NO.
2. Using a VOM, check for resistance from NO to COM.
Should read open. Next, check for resistance from NC
to COM. Should read closed.
3. If not as above, replace EBTDR.
Checking EBTDR Contact Operation
With power on:
1. Set the thermostat to the fan “on” position.