Primus D11, Service Manual

Page: 67 / 160

70284701
65
Section 7 Electronic Control Troubleshooting
71. WILL NOT RUN – ELECTRIC – MANUAL TIMER
(Sheet 1 of 3)
T051D
Is there voltage at
terminal C on the
drying timer?
NO
Correct wiring
between drying
timer and lint panel
switch.
YES
Is there voltage at
terminal B on the
drying timer?
NO
YES
Is there voltage across
terminals 7 and 8 of
CR1 relay?
Replace drying
timer.
NOTE: make sure drying
timer is in the "on"
position.
NO
YES
Correct the wiring
between CR1 relay
and terminal B on
drying timer.
Is there voltage across
terminal 3 and 5 of
CR1 relay?
Is there voltage
across terminals 2A
& 1A of push to
start switch?
Replace CR1 relay.
YES
NO
YES
NO
Replace push to
start switch.
Is there voltage across
COM and N.O. of
the airflow switch?
NOTE: This test to be
made with push to start
switch pressed in.
YES
Adjust the airflow
switch or replace if
inoperative.
NOTE: The N.O. contact is closed in the rest
position due to the physical
mounting of the switch.
NO
Is the unit equipped
with a time delay
board?
NO
Is there voltage across
H1-6 & H1-8 on
TMR1?
YES
Correct wiring to
TMR1.
NO
YES
Is there voltage across
DOB contacts on
TMR2?
Replace time
delay board.
YES
NO
Is there voltage across
terminals H1-4 &
H1-8 on TMR2?
YES
NO
CONTINUED
ON NEXT
PAGE.
Is there voltage across
terminals 5 & 3 on
the CR2 relay?
Replace CR2
relay.
YES
Is there voltage across
terminals 7 & 8 of
CR2 relay?
NO
Correct wiring
between CR2
relay and
airflow switch.
NO
YES
Is there voltage across
coils B & A of the
motor control relay?
Correct wiring
between motor
control relay
and airflow
switch.
NO
**
**
**
Check for proper
operation of
airflow switch.
**
**
** Tested with the start switch pressed in.
YES
With and without time delay boards.
Single and stacked units.
Single and three phase power supply.
T051D