18
19
13 . Prior to reinstalling the discs, the drive shaft should be removed and the O-rings cleaned, inspected and lubricated with
Dow #7 silicone grease . The shaft can now be installed into the disc prior to installation .
14 . With the outlet disc assembled to the shaft, the orientation of the shaft to inlet disc can be assured by installing the set
with the through hole on the outlet disc at the 6 o’clock position . The easiest way to reassemble is to remove both disc
drives and assemble the outlet side first . Then each disc can be fitted on the shaft individually . At this point the transfer
valve cap assemblies can be reinstalled .
NOTE:
Both transfer caps only mount in one orientation . Prior to installation of cap assembly, be sure to check that the
stainless steel spring and the plastic spring support is in place and attached to the inside of the assembly .
15 . Wipe the outside edge of the O-ring on the cap and the inside
mating area of the valve with a clean cloth and reapply a thin
layer of Dow #7 silicone grease .
16 . Noting the one possible orientation of the transfer drive cap,
use one hand to press in and support the transfer drive cap
while using the opposing hand to start two screws in, one
on the top and one opposing it on the bottom . Tighten the
screws evenly so that the cap seats the O-ring without
getting pinched or damaged . Screws should only be hand
tightened with a 5/32” or 4 mm Allen wrench .
DO
NOT OVER TIGHTEN SCREWS.
NOTE:
Take care to be certain the meter cable
doesn’t get under the drive cap while tightening
as it will result in damaging the cable .
17 . Position the large white drive gear with the “A”
pointing toward the one o’clock position and then
press it onto the stainless steel drive shaft, making
sure it snaps and locks into position .
NOTE:
The white drive gear is splined to the drive
shaft and will only assemble in one orientation .
Because of this, it is not necessary that the discs and
gear be exactly positioned . The positioning needs to be
approximate but they have to fit on the shaft .
18 . Install the larger black reducing gear onto the stainless steel
shaft, then install the remaining smaller reducing gears from
left to right .
19 . Reinstall the grey reducing gear cover over the gears and affix
with the three stainless steel screws .
20 . Reinstall the drive motor by pressing the spring clip loop to the right, then rotate the motor as you are inserting it so the
gear of the motor meshes properly with the reducing gears .
21 . Release the spring clip loop and rotate the motor until the motor housing engages with the plastic nub inside the housing
that holds the motor in place, making sure that the top of the motor is flush with the top of the grey gear housing .
22 . Press the drive motor wires down into the strain relief of the drive cap .
23 . Reinstall the cover assembly .
After completing any valve maintenance involving the valve drive assembly or the transfer drive assembly, press and hold
the
NEXT
and
REGEN
buttons simultaneously for three to five seconds to perform a soft reset which will synchronize the control
valves positions .
SERVICE INSTRUCTIONS
FIGURE 3
Summary of Contents for Impression Plus IMP-1044TW
Page 22: ...22 REPLACEMENT PARTS...
