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SERVICE
SEQUENCE OF OPERATION
1 MAIN POWER switch OFF
2 Two-piece MAIN POWER switch: Switch 1 (S1) and Switch 2 (S2)
3 Live contact point: S1, Top Terminal (T)
PS(N) White → S1(T) Brown
Mains VAC
4 Live contact point: Fan Relay, R1, Terminal 2
PS(N) White → R1(2) Brown
Mains VAC
5 MAIN POWER switch ON
6 S1, Bottom Terminal (B), passes MAINS to Circuit Breaker 1 (CB1)
PS(N) White → CB1(T) Black
Mains VAC
7
S1, Bottom Terminal (B), passes MAINS to Fan Relay (R1),
Terminal 8
PS(N) White → R1(8) Purple
Mains VAC
8 CB1 passes MAINS to the 24VDC Power Supply (PS)
PS(N) White → PS(L) Grey
Mains VAC
9 CB1 passes MAINS to the Air Switch (AS1)
PS(N) White → AS1 Red
Mains VAC
10
PS provides 24VDC to the Machine Control (MC) on plug 15, pin 1
& 3, P15(1,3)
MC P15(3) Black → MC P15(1)
Red/Black
24 VDC
11 PS also provide 24VDC to S2, Top Terminal (T)
MC P15(3) Black → S2(T) Red/
White
24 VDC
12
S2, Bottom Terminal (B), provides a 24VDC “wake” signal to the
Machine Control, MC P10(5)
MC P15(3) Black → MC P15(6)
Orange
24 VDC
13
MAIN POWER switch ON, System in STANDBY, User Interface (UI) ready. Touch UI Pow-
er Icon ( ) to commence operation
14
System performs “open” safety test of the AS1, conrming 0VAC
is present on MC P9(6)
Chassis Ground → MC P9(6)
Orange
0 VAC
15 R1 closed by 24VDC from MC P10(1) to R1, Terminal 1
R1 (0) Brown → R1(1) Red/White
24 VDC
16 R1, Terminals 2, 4 6 and 8 are now common points of MAINS
PS (N) White → R1(2,4,6,8)
Mains VAC
17 S1 is now bypassed. R1, Terminal 2 & R1, Terminal 8 (Cool-down Bypass)
18 R1, Terminal 4, passes MAINS to the Cooling Fan, M2 M2 Begins Operation
19 R1, Terminal 4, passes MAINS to the Circuit Breaker 2, CB2
PS (N) White → CB2 Blue
Mains VAC
20 CB2, passes MAINS to the Main Motor System M1 (Figure 2a/2b)
PS (N) White → (3 Pin Main
Motor System Plug) Brown
Mains VAC
STEP OPERATIONS TEST POINTS