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Replacing coalescence mats
To replace, wrap mat around supporting
basket and replace tensioners and Velcro
straps (fluffy side outwards). When
wrapping mat around basket ensure
no openings are left that could allow
wastewater to flow through untreated.
Avoid wrapping coalescence mats too
tightly to prevent damage.
5.2 Cleaning Coalescing Units
Coalescing unit must be removed
periodically for cleaning, the separator is
not functional during this process.
1.
Ensure inlet / outlet valves are closed
2.
Pull coalescence unit up above water
level in the separator, using a hoist
where necessary
3.
Allow water to drip into separator
before removing coalescing unit
4.
Clean unit in bucket, or appropriate
area, to contain wastewater for proper
disposal (contaminated water can be
poured back into separator)
5.
Completely remove all dirt by spraying
with clean water from either:
- a min. ¾ inch hose, under mains
pressure (min. 58psi), or
- a high pressure device at max
870psi and using cold water
6.
Only use cleaning products when
absolutely necessary (ensure cleaning
agent will not damage separator;
consult cleaning product MSDS details
for suitability), rinse thoroughly with a
high pressure device with max 870psi
and 140 °F (60 °C)
Removing coalescence mats
Mats need only be removed from basket
if soiling is particularly bad. Coalescence
mats are attached to a supporting basket
at top and bottom with tensioners and
Velcro strips (fluffy side outwards). Once
these are removed, mat can be unwound
from basket.
Tip –
Lengthy operational hold-ups can be
prevented by swapping dirty coalescence
units for clean back-up/spare coalescence
unit. The dirty coalescence unit can be
stored in a water-filled container until, to
prevent dirt drying hard onto unit, until it
can be cleaned.
5.3 Oil / Sludge Disposal
Maximum levels for emptying separator are
when:
•
80% of maximum oil storage has been
reached, and/or
•
50% of maximum sludge trap volume
has been reached.
Identification plate shows maximum
thicknesses of each layer (identification
plate is located inside separator).
Even if levels remain below these limits,
separator should be emptied at least every
year.
•
Contents of separator must be
disposed of by authorized disposal
company
•
Care must be taken not to damage
inside walls and internal equipment of
separator
•
Rinse down walls and base of
separator using hot water to loosen
hardened solids and suction out left
over slurry
•
Refill separator with clean water,
following initial set-up procedure (
See
3.2 Filling separator system - Pg 8
)
5.4 General Inspection
Prior to initial use, and thereafter at regular
five yearly intervals, a “properly qualified
technician”* must inspect the separator to
ensure it is in good condition and operating
properly – separator must be completely
emptied and cleaned before general
inspection can be carried out.
An integral part of every general inspection
is a water-tightness test carried out in
accordance with EN 858-2.
1.
Close inlet & outlet pipes
2.
Fill separator with water until full
3.
Check for changes in water level
indicating possible leaks - investigate/
repair/replace as required
*
“Properly qualified technician” is
defined as staff of independent
companies, independent experts, or
other institutions with certified special
technical knowledge on the operation,
maintenance and testing of the
separators described here, and have
the necessary equipment.