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EN
951-180-074-EN Version
03, last updated 2019 / 07
1
1. Safety instructions
1.26 Existing residual risks
Residual risk
Remedy
Operating in a potentially explosive atmosphere
Use with non-standard-compliant varnishing
of grounded metals or a conductive surface
○
Prior to initial commissioning and then at regular intervals, inspect the varnishing and if neces-
sary have it replaced by a person competent to do so. The maximum permissible varnish layer
thickness is 0.2 mm and must not be exceeded under any circumstances.
Electrostatic hazard due to motor
contamination.
○
Immediately remove existing contamination using a moist cloth.
○
According to the specific operating conditions, clean the surface of the motor with a moist cloth at
regular intervals.
Heating of non-supplied lubrication points
in the ignition temperature range by an un-
detected malfunction within the centralized
lubrication system.
○
System design according to characteristics of the gerotor pump unit
Explosion hazard at excessively high tem-
perature increase
○
A volumetric flow meter must be used if the viscosity is <30 mm
2
/s and the pressure (P) is greater
than 30 bar.
Heating of components in the ignition tem-
perature range/formation of a potentially ex-
plosive atmosphere by agitated/swirled dust.
○
Avoid accumulated dust/remove any accumulated dust on a regular basis. Select an installation
location with the lowest possible dust level.
Strong heating of the motor due to jam at
high load or failure of motor circuit breaker.
○
Turn off the pump unit. Let parts cool off; remedy the cause. Replace/correctly configure the mo-
tor circuit breaker.
Generation of electrostatic charges, sparks
due to unsuitable clothing or tools.
○
Always use ESD clothing and ESD tools within potentially explosive atmospheres.
Generation of sparks by the dropping of
parts.
○
Secure parts against falling. If necessary, cover parts to avoid sparking.
Missing or insufficient grounding.
○
Check grounding of gerotor pump unit and connection made by customer.
Introduction of catalytic, unstable, or pyro-
phoric substances into the potentially explo-
sive atmosphere.
○
Ensure that none of these substances enter the potentially explosive atmosphere. Have all sub-
stances approved by the operator in advance.
Heating due to excessively high back pres-
sure or ceased feeding
○
Use a pressure-limiting valve
○
Set the pressure-limiting valve correctly