MK/MV – Medium Profile Series Unit Coolers (E206993_M)
1
TABLE OF CONTENTS
1
RECEIPT OF EQUIPMENT ____________________________________________________________ 6
1.1
INSPECTION __________________________________________________________________ 6
1.2
LOSS
OF
GAS
HOLDING
CHARGE ___________________________________________________ 6
2
UNIT INFORMATION AND DIMENSIONS _______________________________________________ 6
2.1
MODELS
COVERED _____________________________________________________________ 6
2.2
UNIT
DIMENSIONS _____________________________________________________________ 7
3
UNIT LOCATION AND MOUNTING ____________________________________________________ 7
3.1
UNIT
LOCATION _______________________________________________________________ 7
3.2
MOUNTING ___________________________________________________________________ 7
4
PIPING INSTALLATION _____________________________________________________________ 8
4.1
DRAIN
LINE ___________________________________________________________________ 8
4.2
REFRIGERATION
PIPING _________________________________________________________ 8
4.3
EVACUATION
AND
LEAK
TEST ____________________________________________________ 10
4.4
MK
HOT
GAS
DEFROST
PIPING ___________________________________________________ 10
4.5
REFRIGERANT
DISTRIBUTOR
NOZZLES _____________________________________________ 12
4.6
EXPANSION
VALVE ____________________________________________________________ 17
5
ELECTRICAL _____________________________________________________________________ 21
5.1
FIELD
WIRING ________________________________________________________________ 21
5.2
ELECTRICAL
DATA _____________________________________________________________ 21
6
AIR DEFROST SEQUENCE OF OPERATION _____________________________________________ 23
6.1
SEQUENCE
OF
OPERATION ______________________________________________________ 23
7
ELECTRIC DEFROST SEQUENCE OF OPERATION _________________________________________ 23
7.1
SEQUENCE
OF
OPERATION ______________________________________________________ 23
7.1.1
STEP A: NORMAL REFRIGERATION CYCLE _______________________________________ 23
7.1.2
STEP B: DEFROST CYCLE ____________________________________________________ 24
8
GAS DEFROST SEQUENCE OF OPERATION _____________________________________________ 29
8.1
HGE/HGG
3
PIPE
HOT
GAS
DEFROST ______________________________________________ 29
8.2
SEQUENCE
OF
OPERATION ______________________________________________________ 29
8.3
KGE/KGG
REVERSE
CYCLE
2
PIPE
KOOL
GAS
DEFROST _________________________________ 30
8.4
SEQUENCE
OF
OPERATION ______________________________________________________ 30
9
UNITS WITH
KE2 EVAP OEM CONTROLLER ____________________________________________ 32
9.1
SEQUENCE
OF
OPERATION ______________________________________________________ 32
9.2
DEFROST
OPERATION __________________________________________________________ 33
9.2.1
PUMP DOWN SETTINGS ____________________________________________________ 33
9.2.2
DEFROST SETTINGS ________________________________________________________ 34
9.2.3
DRAIN SETTINGS __________________________________________________________ 34
9.2.4
FAN DELAY SETTINGS ______________________________________________________ 34
