Mitsubishi Electric EHSC-MEC Service Manual page 89

DISASSEMBLY PROCEDURE
12. How to remove the drain cock (primary circuit)
(1) Remove the front panel. (Refer to Procedure 1.)
(2) Swing the control box to the front. (Refer to Procedure 4.)
(3) Remove the drain cock (primary circuit).
Photo 12-1 (E*S* series)
Drain cock
13. How to remove the thermistor <liquid refrigerant temp.>
(TH2) / thermistor <flow water temp. & return water temp.>
(THW1, THW2)
(1) Remove the front panel. (Refer to Procedure 1.)
(2) Remove the control box cover. (Refer to Procedure 3.)
(3) Disconnect the following connectors on the control board.
▪ TH2 (CN21)
▪ THW1, THW2 (CNW12)
(4) Release the THW1, THW2 and TH2 lead wires from the
cable clamp, the 2 cable straps and the coated clamp.
Feed the lead wires out the control box without putting
strain on their connectors.
(5) Swing the control box to the front. (Refer to Procedure 4.)
(6) Remove the thermistors from the thermistor holders.
(Photos 13-2, 13-3 and 13-4)
Photo 13-2(EHS* series)
TH2 thermistor THW2 thermistor
Photo 13-3(EHPX series)
THW1 thermistor
OCH571D
Booster heater
THW1 thermistor
THW2 thermistor
89
PHOTOS/ FIGURES
Photo 12-2 (EHPX series)
Drain cock
Photo 13-1
Earth leakage
breakers (ECB1)
Connectors
(CN21)
(CNW12)
Cable strap Coated clamp
Photo 13-4(ERS* series)
THW2 thermistor TH2 thermistor
Booster heater
Cable
clamp
Cable strap
THW1 thermistor