Solenoid diaphragm pump
Series R/RS 204.1
Operating Instructions
TA 416
Rev.
11 en
04/2013
Subject to technical modifications!
www.sera-web.com
43
13
Foreseeable misuse
The following misuse is assigned to the life cycles of the ma-
chine.
CAUTION !
Misuse can result in danger to the operating personnel!
13.1 Transport
Tipping behavior during transport, loading and unloading
ignored.
Weight for lifting underestimated.
13.2 Assembly and installation
Power supply not fuse protected (no fuse/fuse too large,
power supply not conforming to standards).
No or improper fastening material of the pump.
Improper connection of the pressure pipes, wrong mate-
rial i.e. PTFE tape and unsuitable connection pieces.
Liquid pipes confused.
Threads overturned/damaged.
Pipes bent during connection in order to compensate for
alignment errors.
Supply voltage connected without earthed conductor.
Socket for safe disconnection of the power supply diffi-
cult to reach.
Mains plug cut off (direct connection), safe disconnection
impossible. Safe disconnection e.g. by 2-pin main
switch. Wrong connecting cables for supply voltage
(cross-section too small, wrong insulation).
Parts damaged (e.g. vent valve, flow meter broken off).
Wrongly dimensioned pressure and suction pipe.
Incorrect dimensioned and improperly fastened pump
panel (panel broken off).
Electronics opened in order to connect the mains cable
directly to the power supply
electric shock or damage
to the electronics.
The pumped medium is conveyed into the environment
in the case of pumps with automatic or manual vent
valve if the return pipe was improperly fitted or not fitted
at all.
„Danger for the operator“.
13.3 Start-up
Cover on vent openings (e.g. motor).
Suction or pressure pipes closed (i.e. foreign matters,
particle size, stop valves).
Operation without connected return pipe of the vent
valve.
Start-up with damaged system.
Wrong parameterization of the pump
inadvertent start.
Control cable and power cable laid in parallel
mal-
functions due to EMC.
13.4 Operation
Fault message ignored
faulty dosing / process error.
Pipes hit, pulsation damper not used
damage to the
pipes, medium is leaking.
Pumped medium contains particles or is contaminated.
External fuse bridged
no cut off in case of an error.
Ground wire removed
no cut off by fuse in case of an
error, supply voltage directly at the housing.
Insufficient lighting of the working place.
Arbitrary modification of the pump (valves,
internal fus
e, …).
Suction height too high, pump capacity too low
pro-
cess error.
13.5 Maintenance / Repair
Works carried out which are not described in the operat-
ing instructions (works on the stroke mechanism and the
Assembly pump, electronics opened).
Prescribed maintenance schedules ignored.
Use of wrong spare parts/oils (e.g. no
sera
original spare
parts, wrong viscosity).
Improper mounting of spare and wearing parts (e.g.
wrong tightening torque for pump body).
Oil level not checked.
Use of cables with damaged insulation.
No shut down / no protection against a restart before
maintenance work.
Pumped medium or utilities during an oil change insuffi-
ciently removed.
Restart without sufficient fastening.
Valves confused.
Sensor pipes confused.
Pipes not connected (e.g. suction- and pressure pipes,
gas pipes).
Gaskets damaged, medium is leaking.
Gaskets not fitted, medium is leaking.
Wearing of unsuitable protective clothing / no protective
clothing at all.
Operation of an uncleaned system.
Pumped medium contaminated with oil.
Poorly ventilated room.
