(b) Check the following:
1 Hose and hose connections for cracks or crimps. Verify the
pump turns easily and the coupling set screws are tight between the pump and the
motor.
2 If L1 and L3 are illuminated, check for voltage at the motor
input, Q1 through Q3, S5A, and R3. Momentarily select the low-vacuum level and verify
the presence of voltage at R2.
3 If L1 is on and L3 fails to light, test L3 for an open circuit. Check
F2 (a 10A fuse) and S3 for a voltage presence.
4 If L1 and L3 are both off, test L1 for an open circuit. Check S1A
and S1B connections. Check for voltage outputs from D1 through D5, T1, S2A, and F1
on ac power. Check for voltage output from B1, B2, and S2B on internal 12vdc power.
Symptom: No internal battery power.
(2)
(a) Controls: Master-power switch: select ON VAC and RECHARGE.
(b) Check the following:
1 Verify the presence of voltage at D6. Check for a charging
current going through R1 into B1 and B2. Ensure L2 illuminates. Select internal 12vdc
power and test for the output of B1 and B2 through S2B (allow adequate recharge time
before testing for the battery output).
2 Verify the in-line "fast-on's" (yellow) leads are not interchanged
thus reversing the D7 anode and cathode connections.
b. Intermittent Suction. Use the following troubleshooting procedures to
troubleshoot the programmable suction pump in the intermittent suction mode of
operation.
Symptom: Poor intermittent operation.
(1)
(a) Controls:
1 Push the master-power switch ON. Select the intermittent-
suction mode by pushing the suction-mode button in.
2 Select the low-vacuum level by pushing in the suction-level
button.
3 Turn the vacuum control ON/OFF/ADJUST knob fully clockwise.
MD0365
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