Flowserve OR 42 - Manual (Page 10)

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With fluids having a normal transparency the
service life of the glow lamp is more than
10 000 hrs. It is, however, recommended to
replace the glow lamp each time the glass
cylinder is being cleaned.
When the content of the drying cartridge
has assumed a pink colour it can no longer
absorb moisture and must be replaced.
If frequent replacing is necessary check
equipment for tightness:
■ O-rings on light emitter and receiver .
■ Cable entries on light emitter and
receiver .
■ Gaskets of terminal boxes , gaskets of
glass cylinder, oil-seal rings.
ORT 4
A time-delayed alarm is given when the
switchpoint is exceeded. The time delay
prevents temporary variations in the
turbidity of the fluid from raising an alarm.
Time delay set at our factory: 10 s
To eliminate the time delay provide an exter-
nal wire link between terminals 19 and 20.
ORT 5
The ORT 5 features two alarm channels:
■ Channel A 1 operates without delay:
The corresponding relay contact can be
used for triggering a three way valve,
so that contaminated fluid is immediately
discharged from the system.
■ Channel A 2 operates with a delay which
is adjustable between 0.5 and 15 minutes
for start-up and purging purposes, when
at the beginning the turbidity is very high
without representing a case of alarm.
Tool: Screwdriver
1. Loosen stop screw of adjustor and
set required time delay.
2. Slightly tighten stop screw .
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1. After applying mains voltage the green
LED / must be permanently
illuminated (Fig. 1). ORT 5: If a three-way
valve is connected the fluid must flow
straight through.
2. Operate cleaning device . The green
LED / must extinguish.
ORT 4: The red LED must light up.
ORT 5: The red LED and after the set
time delay the red LED must light up. If
a three-way valve is connected it must
open to discharge the fluid.
3. Set cleaning device back to its initial
position. The red LEDs must extinguish.
Functional Test
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Cleaning of Glass Cylinder
1. Move the disc of the cleaning device
up and down. Note that dependent on the
adjusted time delay a temporary alarm
may be given.
2. Move the disc of the cleaning device
back to its initial position (operating bar
protrudes approx. 70 mm from the
sightglass). In case of strong
contamination of glass cylinder replace
plunger of the cleaning device.
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Exchange of Glass Cylinder
1. Close ball valves for inlet and outlet.
Open ball valve for rinsing .
2. Loosen hexagon head screws and
remove base with cleaning device.
3. Remove glass cylinder from below.
4. Check whether housing, lid and base are
completely dry inside. If not, dry with
compressed air. In case of cold fluids,
any moisture remaining in the housing
would lead to the glass cylinder becoming
covered with mist and therefore faulty
measurements.
5. Loosen screws and withdraw housing
from lid .
6. Remove O-rings, clean sealing surfaces
and insert new O-rings.
7. Replace housing and fix lid with
screws .
8. Hold new and dry glass cylinder at the
rim and push into housing from below until
it is located in the upper O-ring.
9. Insert plunger of the cleaning device
into glass cylinder. Screw base to
housing by using hexagon screws.
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10. Close ball valve for rinsing , open ball
valves for inlet and outlet.
11. Check zero-point adjustment and
calibration of the ORT 4/ORT 5.
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Replacement of Glow Lamp
1. Unscrew union nut (outside) of the lid
of the light emitter and remove lid.
2. Exchange glow lamp.
3. Replace lid of the light emitter. Take care
that locating pin fits the groove provided
on the light emitter. Tighten union nut.
4. Repeat calibration of zero point (0 %) and
measuring range (100 %).
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Replacement of Mains Fuse
1. Turn fuse carrier to the left and take off
(Fig. 1).
2. Exchange fuse. Required types:
ORT 4 ORT 5
230 V M 0.1 A 5 x 20 M 0.2 A 5 x 20
115 V M 0.2 A 5 x 20 M 0.4 A 5 x 20
3. Replace fuse carrier and turn to the
right.
Replacement of Cleaning Device
Tools: Spanner
Screwdriver
1. Close ball valves for inlet and outlet.
Open ball valve for rinsing .
2. Loosen hexagon head screws and
remove base with cleaning device.
3. Use screwdriver for bending open the
inside serrations of the fixing disc and
remove fixing disc.
4. Withdraw plunger and insert new plunger.
5. Mount new fixing disc. Make sure that the
serrations do not point towards the
plunger.
6. Remove O-rings from base, clean sealing
surfaces and insert new O-rings.
7. Push plunger of the cleaning device
into glass cylinder. Screw base to
housing by using hexagon screws.
8. Close ball valve for rinsing , open ball
valves for inlet and outlet.
9. Check zero-point adjustment and
calibration of the ORT 4/ORT 5.
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Adjustment of Time Delay
Clean glass cylinder at regular intervals – at
least once a week, dependent on the
degree of contamination of the fluid.
Replace glass cylinder if it is strongly
contaminated.
st lightup.
ORT 5: The red LED and after the set
time delay the red LED must light up. If
a three-way valve is connected it must
open to discha
Maintenance
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