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Repair
72
333347F
Air Controls
Replace Air Control Solenoids
NOTE:
In order to replace the air control solenoids, the
system must be tipped back to access underneath the
electrical enclosure.
Disassembly (see F
1.
Turn main power switch OFF.
2.
Disconnect plug from power outlet or turn off circuit
breaker for incoming power.
3.
Close the bleed-type ball valve installed at the sys-
tem air inlet to relieve all air pressure in the system.
4.
Remove front access panel (10) from electrical
enclosure (1).
5.
Remove the transformer assembly; for 480V sys-
tems only
(see F
:
a.
Disconnect transformer wires from J2 connector
on AWB board and the main power switch.
b.
Remove three screws (142) and InvisiPac sys-
tem off of transformer assembly (140).
6.
Use 3/8 in. socket to remove two screws (8).
7.
Note location of each air line connection.
8.
Insert hands through access holes (FF), see F
52, in bottom of electrical enclosure then disconnect
air lines from air control solenoids (402).
9.
Disconnect air control solenoids cable
from MZLP
daughter board connector J13. Pull wire out of the
electrical enclosure.
10. Remove two screws (405) securing solenoids (402)
to air control assembly (9) then remove air control
solenoids.
Reassembly (see F
. 52):
1.
Use two screws (405) to secure new
solenoids (402) to air control assembly (409).
2.
Feed the new solenoid cable into the electrical
enclosure and attach cable to MZLP daughter board
connector J13.
3.
Insert hands through access holes (FF), see F
52, in bottom of electrical enclosure then connect air
lines to air control solenoids (402).
4.
Slide air control assembly (9) into place then use
two screws (8) to secure to electrical enclosure (1).
5.
For 480V systems, install transformer assembly
(140) with screws (142) and reconnect transformer
wires to J2 connector on AWB board and the main
power switch.
F
IG
. 52
F
IG
. 53
WLD
8
9
1
405
402
FF
WLD
140
142
Содержание 24T918
Страница 16: ...Component Identification 16 333347F ...
Страница 103: ...Accessories 333347F 103 ...
Страница 129: ...Technical Data 333347F 129 ...