ENGINEERING STANDARDS
Rosedale Products, Inc.
IOM
Issue Date: 29MAY96
3730 West Liberty Road
D6150STD.WP6
Revision:
Ann Arbor, MI 48103
n:\iom\
Revision Date:
Specification No.
7.3.4
PAGE: 3 of 6
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
Rosedale Engineering Standards are the property of Rosedale Products, Inc. A Rosedale standard or copy thereof shall not be distributed (except with express approval of Rosedale
Products, Inc.) to any individual or firm beyond the intended recipient firm or individual. Firms of individuals acting contrary to the above may be subject to suit, ineligibility for continued or
future employment, or removal from Rosedale's "Approved Manufacturers and Specialty Contractors List".
II.
Operation
Filter System Start-Up Procedure:
P rior to turning on the flow to the inlet service, please make the following checks:
1.
Check inside filter unit to be sure basket and filter bag (if applicable) are in housing and do not
require cleaning or replacement. If necessary install a clean filter basket and bag (if applicable).
2.
Check that filter unit cover is securely fastened to housing. You are now ready to open the flow
to the inlet service line. Slowly open the inlet service line approximately 25% of normal
operational flow (open slowly as not to displace filter bag inside the housing). After filter unit is
pressurized and vented, slowly open outlet service line unit valve until completely open.
Complete opening of inlet service line until desired flow rate is reached.
Once the desired service flow has been established, the filter will operate efficiently until dirty. However, under no
circumstances should more than
15 PSI Differential Pressure
through the filter be obtained. Operating the filter unit
with a high differential may cause filter bags to rupture and/or cause damage to filter system and downstream
equipment.
To prevent excessive drop through the filter unit, regular inspection of the filter media is required. Monitoring of
differential pressure through the housing can be utilized as a means of determining whether or not the filter media
needs cleaning or replacement.
Filter Media Cleaning/Replacement Procedure
(Side of duplex not in service):
The duplex system features continuous filtering capabilities. When it becomes necessary to clean or replace filter
media during continuous operating conditions, follow the procedure outlined below:
1.
Open balancing valve, if applicable, to equalize pressure in both housings.
2.
Unlock mechanical valve actuator assembly by removing the lynch pin.
3.
Slowly
move the mechanical valve actuator lever 90
E
to divert the flow to the clean filter vessel.
4.
Replace lynch pin to prevent accidental switching of fluid flow to filter being serviced.
5.
Close balancing valve, if applicable.
6.
Relieve the pressure from the filter vessel being serviced.
WARNING
CONTENTS UNDER PRESSURE
Reliev e Pressure in accordance
with Manufacturer's instructions
before opening Filter Vessel.
FAILURE TO DO SO MAY RESULT
IN SERIOUS BODILY INJURY.
7.
Drain housing sufficiently to access filter basket.
8.
Remove cover by loosening the cover eyenuts. The eyenuts in the slotted corners should be
loosened sufficiently to swing free. Loosen the third eyenut sufficiently to allow the top cover
and closure assembly to swing away from the top of the unit.
9.
Remove filter basket and clean thoroughly, remove the filter bag (if applicable) and throw away.
(Cleaning and reusing the filter bag is not recommended.)
