Appendix C - Stormwater Management Plan

                                            SPEL COALESCER UNITS
The SPEL PuraceptorTM Class 1 separator and the SPEL StormceptorTM Class 1 by-pass separators incorporate
coalescer units. The coalescer units provide a coalescence process for the separation of small globules of light
liquid pollutants before final discharge to the surface water drain.
Coalescers are found in the second chamber of the SPEL PuraceptorTM and the second chamber of the SPEL
StormceptorTM Class 1
Prior to installation
1. Remove any strapping / ropes which have been used to hold the coalescer units from shifting in transit.
2 The access shaft(s) above the coalescer units should be covered to prevent ingress of
  concrete, dust, debris etc., which could clog the foam inserts.
3. On completion of installation, check that the coalescer unit is inserted securely into the base socket.        Retaining
On heavily polluted sites silt and contaminants may build up in the coalescer unit foam inserts                   clip
and add significantly to it’s weight. Use lifting chain sets that are on hooks at ground level
for safe lifting with a tripod or hoist.                                                                       Extension shaft

Installation
During installation, it is important that the foam inserts are not clogged with dust, debris or
drops of wet concrete. To safeguard against this, we recommend covering the access shaft
with a sheet of polythene, if not already covered.
                                                                                                      Static water level
Commissioning
On completion of installation, check the foam insert is fitted inside the stainless steel coalescer
unit and the coalescer unit is inserted securely into the base socket.                                               Lifting handle

Maintenance
1. Lift handle and coalescer unit out of the tank and place in a retained area so pollutants do not escape.          Coalescer unit

2. Remove foam insert and wash with normal water pressure ensuring the dirty water runs into the
   PuraceptorTM / StormceptorTM.
3. Make sure the hole in the centre of the coalescer foam is facing towards the manhole
   when installed in the tank.
4. Re-insert the foam insert into the stainless steel coalescer unit and re-insert the coalescer into the                  Figure 1. Coalescer unit with lifting chains
   PuraceptorTM / StormceptorTM. After the tank has been cleaned.

SPEL COALESCER UNITS GUIDE RAIL SYSTEM/LIFTING,                                                                 Handle with locating/
LOCATING AND LOCKING SYSTEM                                                                                     locking bracket to guide
                                                                                                                rail system
SPEL coalescer unit guide rail system
This facilitates easy insertion and removal of coalescer units. The system is robust, manufactured       Handle extension
                                                                                                         (optional extra with
throughout in stainless steel and is action positive, leaving no doubt the coalescer
                                                                                                         extension shafts)
unit is located properly.
Brackets fixed to the top and bottom of the coalescer unit simply engage the stainless steel
guide rail fixed to the top of the stub access shaft. The coalescer is then lowered in the normal way,
being guided at the correct angle into the conical base unit which finally locates the coalescer unit          Coalescer guide
into it’s final position.                                                                                      rail system
Extension guide rails can be incorporated into the SPEL extension shafts to suit
(preferably when ordered with the separator).
However, when the separator is full of water, debris or sludge accumulated over a period
could prevent the coalescer unit from re-seating correctly after servicing.
The coalescer unit lifting / locating / locking system ensures the coalescer unit is seated
correctly and can be locked into position to prevent tampering.                                                                                          Lifting hook
The stainless steel lifting handle can be extended to suit deep tank inverts and provide easy
access for lifting manually or with a tripod and hoist utilising the lifting hook.




                                                                                                                      Figure 2. SPEL coalescer unit guide rail
                                                                                                                      system/lifting, locating and locking system
                                                                                                                                                                        4