RS COMPACT FREEZE TUNNEL, Руководство по эксплуатации и обслуживанию

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OPERATION & MAINTENANCE MANUAL
CompactFreezer
38
TROUBLE PROBABLE CAUSE REMEDY
freezer curtains
Relay or solenoid valve
Check relay or solenoid valve.
Correct cause or replace item(s), if
necessary
Temperature indicator
overshooting Liquid solenoid valve stuck
open Check for foreign material on valve
seat. Correct cause or replace parts,
if necessary
Temperature controller or
sensing element Refer to Manual on controller.
Check settings, sensing element and
its wiring and controller. Correct
cause or replace sensing element or
controller if necessary
Sensor projection too short Extend projection
Liquid nitrogen running on
floor under freezer Nozzle shooting over edge of
conveyor Adjust nozzle inwards so that spray
of nozzles are on product or on
conveyor area
Conveyor will not operate Power supply Check and restore power
Electrical short in motor or
drive controller or fuse blown
in drive controller Check motor and drive controller.
Correct cause or replace each, if
necessary
Jammed conveyor belt (motor
hums) Press the “E‐stop” button, check for
jam, and correct cause
Belt drive not activated. Activate belt drive.
Emergency stop is activated. Pull to reset the e‐stop button.
Thermo‐magnetic or circuit
breaker of motor (belt)
tripped out.
Check thermo‐magnetic or breaker.
Reset. Measure current to motor in
case of repeated
trip‐out.
Circulating fan motor(s) not
running Starter control dropped out
for some cause Manually spin fan blade to see if it
spins freely or there are evident bad
bearings if spins freely reset starter.
If motor does not start, check
electrical connections or perhaps
motor burned out. Find cause and
correct.
Fan motor pushbutton is not
on. Press the START button for the Fan
Motor on the control panel.
One of the upper doors is
open, or the limit switch is not
engaged Check each of the upper doors and
limit switches.
Banks of fan motors not
running (for variable speed
motors) or behaving
erratically Check display for error
message Refer to Section 16.0 of the Leeson
Manual to interpret messages and
suggested remedies
Check display – no error
message
Refer to Table for Check Points and
Suggested Remedies