delta-mobrey 11DS Installation, Operation & Maintenance Instructions Manual

Installation, Operation &
Maintenance
Displacer type Vertical Level Control
Models 11/12/13/18DS
SAFETY INSTRUCTIONS
Please refer to SAFETY MANUAL
revision for installation.

Information ..points out useful tips,
recommendations and information for
efficient and trouble-free operation.
CAUTION! ..indicates a potentially dangerous
situation that can result in light injuries
or damage to equipment or the
environment, if not avoided.
WARNING! ..indicates a potentially dangerous
situation that can result in serious
injury or death, if not avoided.
WARNING! ..identifies hazards caused by electric
power. Should the safety instructions
not be observed, there is a risk of
serious or fatal injury.
WARNING! ..indicates a potentially dangerous
situation that can result in burns,
caused by hot surfaces or liquids, if not
avoided.
WARNING! ..indicates a potentially dangerous
situation in the hazardous area that can
result in serious injury or death, if not
avoided.
Ex applications ..special instructions for Ex applications.
CONTENTS
Foreword
Principle of Operation
Marking
Installation
Assembly
•
Special conditions of use
•
Wiring
•
Electrical rating
•
Putting into operation
Single switch (11DS-Single Alarm)
•
Single switch (12DS - Pump Controls)
•
Two switch (13DS - 2 Pumps Controls)
•
Two switch (18DS - 2 Alarms)
•
General Warnings
Earthing
Commissioning
Inspection and maintenance
Periodical visual inspection
•
Periodical functional verification
•
Replacement parts
Warrantee
Decommissioning
Disposal
Model code
Dimensions
Instructions
IP152/SI latest
www.delta-mobrey.com
IOM-VERT. DIS. IP-153—Rev.B: Jan 2023
Foreword
The unit is manufactured, checked and supplied in
accordance with our published specification, and when
installed and used in normal or prescribed applications, with
the lid in place and within the parameters set for mechanical
and electrical performance, will not cause danger or hazard
to life or limb.
Warning: Units must be selected and installed by
suitably trained and qualified personnel in accordance
with appropriate codes of practice so that the possibility
of failure resulting in injury or damage caused by
misuse or misapplication is avoided.
Warning: before installation check that the instrument
characteristics comply
requirements
Warning: The users attention is drawn to the fact that,
when the unit is 'live' with respect to electrical or
pressure supplies, a hazard may exist if the unit is
opened or dismantled
Warning: where any special condition of the product
has been required as identified by the last 4 digits of the
part number, follow the necessary safety instruction for
a correct installation.
Warning: Max thickness of paint is 0.2mm
If the equipment is likely to come into contact with aggressive
substances, suitable precautions should be taken that
prevent it from being adversely affected, thus ensuring that
the type of protection is not compromised. Aggressive
substances: e.g. acidic liquids or gases that may attack
metals or solvents that may affect non-metallic materials.
Suitable precautions: e.g. regular checks as part of routine
inspections or establishing from the material's data sheet that
it is resistant to specific chemicals.
Principle of operation
All models utilise the displacer and spring principle. As
the liquid level rises and progressively immerses the
displacer element the effective weight suspended on the
spring reduces and the consequent length of spring
change is used to provide magnet movement and operate
the switches). Vertical movement of the primary magnet A
in a glandless pressure tube simultaneously actuates
magnets B & C to switch the contacts (see Fig. 1).
Fig. 1 - Operating principle
with process and plant
1