Safety Specifications; In Conformity With The Requirements; Chapter 13: Troubleshooting Guide; Error And Warning Codes - Thermo Scientific Wellwash User Manual

Safety specifications

In conformity with the requirements

Wellwash bears the following markings:
Type 888
100–240 Vac, 50/60 Hz, 80 VA max., Class I
CE marking
cTÜVus
The safety specifications are also met under the following environmental
conditions in addition to or in excess of those stated in the operating conditions:
Altitude
Temperature
Humidity
Mains supply fluctuations
Installation category
(overvoltage category)
Pollution degree
Note!
1) The installation category (overvoltage category) defines the level of transient
overvoltage which the instrument is designed to withstand safely. It depends on the nature of the
electricity supply and its overvoltage protection means. For example, in CAT II which is the
category used for instruments in installations supplied from a supply comparable to public
mains, such as hospital and research laboratories and most industrial laboratories, the expected
transient overvoltage is 2500 V for a 230 V supply and 1500 V for a 120 V supply.
Note!
2) The pollution degree describes the amount of conductive pollution present in the
operating environment. Pollution degree 2 assumes that normally only nonconductive pollution,
such as dust, occurs with the exception of occasional conductivity caused by condensation.

Chapter 13: Troubleshooting Guide

Note!
Do not use the instrument if it appears to be malfunctioning.

Error and warning codes

When an error is detected, the current operation is terminated. After an error, it is best to abort the
current run and restart from the beginning after the problem is fixed. To abort, press the STOP button
after an error and accept by pressing the OK button.
The error (Table 11) and warning codes (Table 12) are presented below.
Up to 2000 m
+5°C to +40°C
Maximum relative humidity 80% for temperatures up to 31°C
decreasing linearly to 50% relative humidity at 40°C
±10% from nominal
II according to IEC 60664-1 (see Note 1)
2 according to IEC 60664-1 (see Note 2)
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