-
Common faults and solutions of mold temperature machine
1. Mold temperature machine lacks media alarm
Fault analysis: There are two types of media shortage alarms for the mold temperature machine: the water temperature machine is a signal output by the pressure control, and the oil temperature machine is a signal output by the oil level switch (float switch).
Mold temperature machine liquid level indication
Solution to media shortage alarm in mold temperature machine:
(1) Confirm if there is a lack of media. The water temperature machine requires water pressure, and the oil temperature machine requires sufficient oil. If there is a lack of media, it needs to be supplemented
(2) If the media is not lacking, it may be due to a malfunction in the control components or pipeline blockage. If the machine needs to be replaced due to a malfunction or emergency, a false signal can be created to make the mold temperature machine work first.
2. Mold temperature machine overtemperature alarm
Fault analysis: Electric overheating is caused by a signal input from the temperature controller
resolvent:
(1) Normal overheating, temperature control is inaccurate and needs to be adjusted,
(2) Abnormal overheating, temperature control failure, replacement or provision of false signal output.
3. Overload of mold temperature machine pump
Fault analysis: Pump overload protection provides signal support through oil thermal protection
ABB overload protector
resolvent:
Excessive pump current, pump failure or thermal protection failure, thermal protection failure can provide false signals, pump failure must be replaced before use.
4. The mold temperature machine does not heat up
Fault analysis: The heating signal is output by the computer version to control the operation of the heating tube
resolvent:
(1) There are control system issues and broken heating tubes when not heating.
(2) False signals can be provided for control system faults before troubleshooting,
(3) The heating tube must be replaced before it can function properly.
5. The mold temperature machine does not cool down
Fault analysis: Cooling is controlled by an electromagnetic valve, and cooling water is introduced to cool the internal temperature of the equipment.
resolvent:
(1) Check if the cooling water is flowing, whether it is due to pipeline blockage or a faulty solenoid valve,
(2) The oil temperature machine can work normally without cooling water, but the temperature control is not accurate.
6. Pump damage
Solution: The motor needs to be repaired or replaced.
Suggest replacing the motor directly. Therefore, when selecting a mold warmer, it is important to check the brand of the pump. For example, the Ouneng model temperature machine uses Siemens motors, which have a long service life.
7. Mold temperature machine reverse phase alarm
Fault analysis: Power phase fault ensures pump forward rotation operation
Solution: The reverse phase protection device has malfunctioned. Or if the phase of the power cord is connected incorrectly, targeted treatment is needed.
8. Temperature not displayed
Fault analysis: Thermistor output signal to computer version or thermostat
Solution: If there is a problem with the temperature sensing cable or computer version, it needs to be replaced.
9. Continuous start and stop
Fault analysis: Short circuit of a certain component
Solution: Check which step is working and whether the working components in this step are short circuited
Refrigeration Encyclopedia
CN
EN
Official weibo/
Online message/
Contact us/
Legal notices
Production equipment
Production equipment
Production equipment
Production equipment
Production equipment
Production equipment
CCTV
