Tweco 15XC CE Merlin PAK - Manual (Page 93)

Manual 0-2529 4 - 21 SERVICE
4.11 TROUBLESHOOTING GUIDE
TROUBLE POSSIBLE CAUSE REMEDY
A. No front panel LED
indicators lit. Fan and
pump off.
B. AC indicator on. Fan and
pump off.
(Causes 6 and 7 are only
for systems having re-
mote control panel)
1. No primary power. See
also Steps C and D (page
4-22)
2. Blown fuse (F2)
3. Faulty ON/OFF switch
(SW1)
4. Faulty voltage selection
board
1. No primary power See
also Steps C and D (page
4-22)
2. Blown fuse (F1 or F2)
3. Faulty ON/OFF switch
(SW1)
4. Faulty voltage selection
board
5. Faulty motor contactor
(MC1 or MC2)
6. Faulty switching control
board (relay K1 not ener-
gized to bypass remote E-
stop function)
7. Remote cable plugged into
J15; remote control panel
not connected on other
end of cable
8. Remote panel E-stop
button activated (or
faulty)
1. Check for proper three-
phase power at input
terminal board
2. Check and replace fuse if
necessary
3. Disconnect primary
power. Check each section
for continuity. Replace
switch if necessary
4. See test A (page 4-27) and
replace board if necessary
1. Check for proper three-
phase power at input
terminal board
2. Check and replace fuse if
necessary. See Test B
(page 4-28)
3. Disconnect primary
power. Check each section
for continuity. Replace
switch if necessary
4. See test A (page 4-27) and
replace board if necessary
5. See test C (page 4-29) and
replace contactor if neces-
sary
6. See test C. part 3 (page 4-
29)
7. Remove cable plug from
J15 or connect remote
panel correctly
8. Twist button clockwise to
release. If necessary, check
for continuity from J37-35
to J37-36