Heidolph RZR 2041 - Manual (Page 18)

18
E
6. Install shaft guard (P/N 509-08000-00)
A shaft guard (R) is available as an extra safety protection fea-
ture. This guard tube is held by 2 ea. screws (S) located at the
top of the stirrer chuck.
This guard, attached to the stirrer housing, is used to protect
the user from being hurt by the fast-spinning shaft.
OPERATION AND CONTROLS
1. Description
The HEIDOLPH stirrers RZR 2020, RZR 2021 and RZR 2041 are user-friendly and are specifi-
cally designed for laboratory use. They are equipped with a maintenance-free capacitor motor
with an effortless variable gear. An easy to use 2-stage gear provides the wide speed range. All
the elements are maintenance-free and free of wear and tear to a large extent.
The hollow drive shaft provides great flexibility for fast and easy paddle adjustment.
1.1
Overload protection
The RZR 2020, RZR 2021 and RZR 2041 are equipped with a thermal overload protection fea-
ture to prevent damage to the stirrer caused by overloading or blocking. In such cases the mo-
tor shuts itself off automatically. Once this mechanism has been triggered, the stirrer must be
allowed to cool down before being restarted via the ON/OFF switch (C). If the motor shuts itself
off due to overloading, this is indicated by a red pilot lamp (A).
1.2
Stirring shaft protection
A protective device made of plexi-glass (PMMA) is available as an optional accessory to protect
the user from injury. It is fastened to the housing and protects the operator from injuries result-
ing from splashes or from unintentional contact with the rotating shaft.
S
S
R
D
B
E (RZR 2021 / 2041)
C
A