Idex Hale Sam, Technical Manual

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159
Table 78. Hale SAM System Level SCR Table – CONTINUED
SYMPTOM CAUSE REMEDY
LOW VOLTAGE CRITICAL Apparatus Charging Sys-
tem
Check system voltage with multime-
ter:
If voltage is low, troubleshoot and re-
pair apparatus charging system.
If voltage is fine, perform Voltage
Calibration (see paragraph 5.6,
page 184)
Equipment Failure SAM Pump Controller (analog to digi-
tal conversion circuit failed) See par-
agraph 4.4.2 (page 53).
LOW VOLTAGE WARNING Apparatus Charging Sys-
tem
Check system voltage with multime-
ter.
If voltage is low, troubleshoot and re-
pair apparatus charging system.
If voltage is fine, perform Voltage
Calibration (see paragraph 5.6,
page 184)
Wire Harness Damaged Check harness power connections
and circuit breakers. See para-
graph 4.3.5 (page 48) and sec-
tion 4.10.6 (page 115).
Equipment Failure SAM Pump Controller (analog to digi-
tal conversion circuit failed) See par-
agraph 4.4.2 (page 53).
POSSIBLE CAVITATION During drafting, SAM de-
tected cavitation
(SAM detected an in-
crease in rpm and no
change in discharge pres-
sure and/or flow. The
pump is not receiving
enough intake water flow
for the desired discharge
condition.)
Check suction hose/seals for leaks.
Replace suction hose with a larger
size and/or increase number of suc-
tion lines available on the apparatus.
During pumping from
tank, SAM detected cavi-
tation
Perform Water Tank-to-Pump Flow
Test (per NFPA 1901). Repair appa-
ratus as required.
During pumping from hy-
drant, SAM detected cavi-
tation
Check LDH/seals for leaks.
Verify SAM Bypass Venting functions
POSSIBLE VACUUM LEAK
(SAM Detected A Continued Decrease
In Suction Line Vacuum.)
Equipment Failure Check LDH/seals for leaks and
hoses for leaks and/or restrictions.
Perform NFPA pump vacuum test.