TM 5-3895-385-23-1
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Table 1. Screed Electric Heater Malfunction Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Measure voltage (WP 0443, Vol
1. If voltage reads below 22 Volts
2) from ground to COM
Direct Current (VDC), proceed to
connection on time delay relay
next test.
(WP 0447, Vol 3, Figure 10).
2. If voltage reads a minimum of 22
VDC, replace light (WP 0243,
Vol 2).
6. Measure voltage (WP 0443, Vol
1. If voltage reads below 22 VDC,
3) from ground to COM
proceed to next test.
connection on time delay relay
(WP 0447, Vol 3, Figure 10).
2. If voltage reads a minimum of 22
VDC, replace time delay relay
(WP 0243, Vol 2).
7. Measure voltage (WP 0443, Vol
1. If voltage reads below 22 VDC,
3) from ground to post 1 on
proceed to malfunction 11.
toggle switch (WP 0447, Vol 3,
Figure 11).
2. If voltage reads a minimum of 22
VDC, proceed to malfunction 4.
2. Breaker tripped.
1. Check bottom side of screed
1. If tripped breakers are found,
electric heater box for tripped
press breaker in to reset, and
breakers (WP 0447, Vol 3,
proceed to next test.
Figure 5).
2. If no tripped breakers are found,
proceed to next malfunction.
2. Start BMPM engine (TM 5-3895-
385-10).
3. Turn on screed electric heat box
(TM 5-3895-385-10).
4. Check bottom side of screed
1. If tripped breakers are found,
electric heat box for tripped
proceed to malfunction 8.
breaker (WP 0447, Vol 3, Figure
5).
2. If no tripped breakers are found,
problem is resolved. Restore
equipment to original condition.
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