Proline Low-temperature Thermostats
8
Safety information
YACE0072 / 21.08.07
1 Safety
information
1.1
General safety information
A laboratory thermostat heats and circulates liquids according to specified parameters. This involves
hazards due to high temperatures, fire and general hazards due to the application of electrical energy.
The user is largely protected by the application of relevant standards.
Further hazard sources may arise due to the type of tempering medium, e.g. by exceeding or
undercutting certain temperature thresholds or by the breakage of the container and reaction with the
heat carrier liquid.
It is not possible to consider all eventualities. They remain largely subject to the judgment and
responsibility of the operator.
The equipment may only be used as prescribed and as described in these operating instructions. This
includes operation by instructed specialist personnel.
The equipment fulfills the following classes of the EMC standard EN 61326-1:1997 VDE 0843-20:
Class A: Operation only on networks without connected domestic areas.
Class B: Equipment for operation on networks with connected domestic areas.
Class B*: Equipment fulfills Class B when a house connection > 100 A is involved. With unfavorable
network conditions disturbing voltage variations may otherwise occur.
The equipment is not rated for use under medical conditions according to DIN EN 60601-1 or
IEC 601-1.
1.2
Other safety information
•
Only connect equipment to PE grounded mains sockets.
•
At higher operating temperatures, parts of the bath cover can reach surface temperatures exceeding
70°C. Be careful when touching it
Æ
Risk of burning!
•
Use
suitable
hoses
Ì
•
Secure hose against slippage with the aid of hose clips. Avoid kinks in the hoses.
•
Check hoses from time to time for any possible material fatigue.
•
Thermal medium hoses and other hot parts must not come into contact with the mains cable.
•
With the use of thermostats as circulating thermostats hot liquid can be emitted when the hose
breaks, presenting a hazard to persons and material.
•
If no external load is connected, the pump outflow must be closed (use screw plugs) and the bypass
valve must be set to "internal"
Ì
•
Take into account the thermal expansion of the heat carrier oils with increasing bath temperature.
•
Depending on the heat carrier liquid used and the type of operation, toxic vapors can arise. Ensure
suitable extraction.
•
When changing the heat carrier liquid from water to a thermal transfer medium for temperatures
above 100°C, carefully remove all water residues, including from the hoses and loads.
When doing
this, also open the blanking caps of the pump outputs and inputs and blow compressed air
through all the pump outputs and inputs.
Æ
Risk of burning due to delay in boiling!
•
Withdraw the mains plug before cleaning, maintenance or moving the thermostat.
•
Specialist personnel must only carry out repairs in the control section.
•
Figures of temperature constancy and display accuracy apply under normal conditions according to
DIN 12876. Electromagnetic high frequency fields may in special cases lead to unfavorable values.
Safety is not impaired.
•
The following action may start the thermostat unintentionally from the standby mode: Previously
activated timer mode
Ì
7.12, "Start" command via interfaces
