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WARNING
To reduce the risk of serious injury, including elec-
tric shock or splashing fluid in the eyes or on the
skin, always follow this procedure before servicing
any part of the metering system and before check-
ing for loose or shorted wires.
1. Turn off the control, and unplug it.
2. Shut off the power to the pump(s).
3. Relieve the fluid pressure.
CAUTION
To avoid damaging the electronic components of the
pulse meter module (1)
D Do not lay anything on the module.
D Be sure the open side of the pulse module faces
up if you lay it down.
D Do not twist or force parts. Align parts properly
as instructed.
NOTE: All pulse meters are bi-directional.
To Install or Remove the Complete Pulse Meter
1. Observe the Warning and Caution above.
2. Disconnect the cable from the pulse module,
taking note of the wiring polarity.
3. Remove the old pulse meter and install the new
one, observing the original wiring polarity.
To Replace the Electronic Pulse Module
4. Observe the Warning and Caution at left.
5. If you are replacing the pulse module, disconnect
the cable, taking note of the wiring polarity.
6. Remove the screws, and lift off the pulse module.
7. Install a new pulse module (1). Align the notch on
the side of the pulse module with the notch on the
side of the metering unit. Use the new screws and
torque them oppositely and evenly to 3 to 5 in-lb
(0.34 to 0.57 N.m). See Fig. NO TAG.
2
308245
Installation
8. Connect the pulse module wires to the cable,
observing the original wiring polarity.
Replacement screws
Torque oppositely and
evenly to 3 to 5 in-lb
(0.34 to 0.57 N.m)
Fig. 1
To Verify the Accuracy of a Pulse Meter
Module
1. Use a clean, calibrated container. If using a single
container, be sure to clean it after each dispense.
2. Have pump air pressure at the lowest possible
setting for dispensing fluid.
3. Put the tip of the nozzle at the bottom of the
calibrated container.
4. If the tip of the dispense valve does not reach the
bottom of the calibrated container, use a length of
plastic tubing over the tip of the nozzle to ensure
liquid enters the container from the bottom.
5. Trigger the gun slowly so the fluid immediately
covers the tip of the dispense valve.
6. Dispense 1 quart of fluid according to the metered
display on the dispense valve.
7. Allow product to sit for 20 minutes, then compare
the actual, physical measurement in the calibrated
container to the measurement displayed on the
meter.
NOTE: The procedure above will determine if the
meter is accurately dispensing the product and mini-
mize testing errors. Some variance may occur depend-
ing on the viscosity of the fluid. If this procedure deter-
mines that the meter is not accurate, recalibrate the
meter as described in the service manual or replace
the meter or the electronics as necessary.
included
1
2
040
89
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