Graco Horizon Fluid Management Systems, Инструкция по эксплуатации

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Maintenance
Shutdown Procedure
WARNING
ELECTRIC SHOCK HAZARD
To reduce the risk of serious injury,
including electric shock or splashing fluid
in the eyes or on the skin, follow the
Shutdown Procedure before servicing any part of
the Horizon system and before checking for loose
or shorted wires.
1. Turn off the electrical power to all control modules.
2. Shut off the power to the pump(s).
3. Relieve fluid pressure as instructed in your pump
and/or dispensing valve manual(s).
Pulse Meter Service
CAUTION
To avoid damaging the electronic components of the
pulse meter module (1) :
1. Do not lay anything on the pulse meter.
2. Be sure the open side of the pulse meter faces
up if you lay it down.
3. Do not twist or force parts. Align parts properly
as instructed.
NOTE: See page 77 to order pulse meters or replace-
ment parts. The older Electronic Fluid Commander
meter, P/N 236763, is not directly compatible with the
Horizon system. Replace the electronic pulse module
with P/N 239367. See instructions below.
To Replace the Complete Pulse Meter
1. Follow the Shutdown Procedure above.
2. Disconnect the cable from the pulse meter, taking
note of the wiring polarity.
3. Remove the old pulse meter and install the new
one, following the original wiring polarity.
To Replace the Electronic Pulse Module
1. Follow the Shutdown Procedure above.
2. Disconnect the cable from the pulse meter, taking
note of the wiring polarity.
3. Remove the screws (A). Lift off the electronic pulse
module (1). See Fig. 14.
4. Install a new electronic pulse module. Align the
notches on the underside of the electronic module
with the cutaways in the top of the metering unit
(2). Use the new screws and torque them op-
positely and evenly to 10 to 12 in-lb (1.2 to
1.4 N
S
m).
5. Connect the pulse meter wires to the cable, follow-
ing the original wiring polarity.
To Replace the Metering Unit
1. Follow the Shutdown Procedure above.
2. Remove the screws. Lift off the electronic pulse
module (1). See Fig. 14.
3. Remove the old metering unit (2).
4. Install a new metering unit. Align the notches on
the underside of the electronic pulse module with
the cutaways in the top of the metering unit. Use
the new screws and torque them oppositely and
evenly to 10 to 12 in-lb (1.2 to 1.4 N
S
m).
Fig. 14
1
2
¡ Replacement screws included with items 1 and 2
©
Torque screws oppositely and evenly to 10--12 in-lb
(1.2--1.4 N
S
m)
¡©
A
P/N 238618 shown
06874