Trouble Shooting - Sanyo MLR-350 Instruction Manual

TROUBLE.SHOOTING
If the unit malfunctions, check out the following before calling for service.
1. If nothing operates even when switched on
1) Is there a power failure?
2)
Is the fuse blown or the circuit breaker inactivated?
Is unit connected to the power supply?
3)
2. When no key operation is available
1) Is the key lock set in OFF (L 0)?
3. When alarm lamp is lit and alarm buzzer sounds
Chamber temperature exceeds over high or over low temperature
1)
In this case, check chamber temperature setting, and high and low limlt temperature once more.
When the temperature of the chamber is not set between high and low limit temperature, it is
necessary to reset either high or low limit temperature.
Did you place a lot of heat load in the chamber at once?
The security system is activated shortly after the load has been placed.
,
Is there a surplus heat source insi(le the chamber?
Refer to Figure 2 for the acceptable limits for heat load inside the chamber.
When programmed operation is not conducted smoothly
4.
1) Did you set the temperature expecting temperature variation in a shorter period than capable given
the value of the pull up and pull down performance of this chamber?
The performance of this chamber shows page 21.
performance will be delayed.
Are high/low limit temperature setting correct?
These temperature should be set 5
all temperatures varied in all procedures.
the operation temperatures cannot be changed significantly owing to the existence of the limits for
temperature extremes.
range when the programmed operation is set.
Taking into consideration, set the time and temper ature.
°
C higher and lower than the highest and lowest temperature in
Once high/low limit temperature have been determined,
For this reason, the high/low limit temperature should be set at a wide
W hen the items are placed in the chamber, the