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Section I. DESCRIPTION AND USE OF CONTROLS AND INDICATORS | Up
TM-9-6115-668-13 5Kw 28VDC Auxiliary Power Unit (APU) MEP 952B Manual | Next
Control Cabinet Assembly, Description of Controls and Indicators (continued). |
TM 9-6115-668-13
Table 2-1 Control Cabinet Assembly, Description of Controls and Indicators.
Item
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
Function
AMPS L1 (OA) meter 0 - 600 A (P1)
Indicates current in line 1
UNDER/OVER FREQUENCY illuminated
H8 lights up if generator frequency is above or
pushbutton switch, red (H8, S4)
below setpoint; S4 cancels the fault message
AMPS L2 (OB) meter 0 - 600 A (P2)
Indicates current in line 2
UNDER/OVER VOLTAGE illuminated
H9 lights up if generator voltage is above or
pushbutton switch, red (H9, S5)
below setpoint; S5 cancels the fault message
GENERATOR OVER TEMPERATURE illu-
H10 lights up if generator overheats; S6 cancels
minated pushbutton switch, red (H10, S6)
the fault message
AMPS L3 (OC) meter 0 - 600 A (P3)
Indicates current in line 3
OVERLOAD illuminated pushbutton switch,
H13 lights up if generator overloads; S10 cancels
red (H13, S10)
the fault message
REVERSE POWER illuminated pushbutton
H11 lights up if reverse power is too high; S22
switch, red (H11, S22)
cancels the fault message
Lights (H6)
For front panel illumination; use PANEL
DIMMER switch/potentiometer (33) to turn on and
adjust brightness
BATTERY CHARGING CONTROL lamp,
Must go out after start; if H2 lights up during
red (H2)
operation, battery set is not being charged
VOLTAGE meter 0 - 250 V (P6)
Indicates line or phase voltages L-L or L-N
OIL PRESSURE lamp, red (H3)
Must go out after start; if H3 lights up during
operation, oil pressure is too low
OIL TEMP-CYLINDER HEAD lamp, red
Lights up when oil and/or cylinder head
(H4)
temperature is too high
FREQUENCY meter, digital display (P5)
Displays generator frequency
(400.0 ± 0.2 Hz during operation)
2 - 3
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