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RX-20/CMX-20
HydraMaster Corporation
Transport and/or Storage
Whenever your RX-20 is transported or
stored, it is recommended that the clean-
ing head be removed. The machine will
then sit flat on the floor and remain more
stable, especially during transport.
Freeze Warning and Protection
Your RX-20 can sustain damage from
freezing, as can any equipment that
functions with the use of water. Care
must be taken to protect this tool from
freezing just as you do your other equip-
ment. To protect it from freezing, sim-
ply blow air from a gas station air hose
through the solution quick connect with
the valve open. This will blow all water
from the valve, solution line, rotary union
and jet assembly. Open and close the
valve several times to ensure that all
water is removed.
Parts and Assemblies
HydraMaster has every part in stock. For
parts ordering or servicing call:
Parts Department
at (425) 775-7276 or
Service Department
at (425) 775-7275
Check for a registered HydraMaster
Service Center in your area.
Periodic Maintenance
Regular RX-20 only:
Check the oil in the gearbox. The
unit must be on a level surface to
get an accurate reading. Change
the oil in the gearbox every 100
hours. Use 80-90 weight gear oil to
reduce friction and allow the gear
box to run at a cooler temperature.
With the unit level, drain the oil. Next
fill the gearbox with new oil at the
oil port on the front until it dribbles
out of the inspection port.
NOTE:
Normal wear and tear on your
new gearbox will cause small amounts
of metal splinters to rub loose during
the first 10 hours of use. Therefore,
we recommend that you change the oil
after 10 hours, and after that every 100
hours.
High speed RX-20:
Check the oil the gearbox. Check
the oil level in the gearbox on a
monthly basis. This is a permanently
lubricated gearbox. You do not need
to change the oil. However, main-
taining the proper oil level is impor-
tant. To check the oil level, remove
the vent plug and look into the gear
box. Turn the star until you can see
the inspection hole in the gear. With
the RX-20 sitting flat on a table or
the floor, the oil level should be up
to, but not above, the middle of the
gear. If oil needs to be added, use a
quality 80-90 weight gear oil.
NOTE:
When checking the oil level in
the gearbox, you can use a toothpick as
a dip stick. The oil level should read
3
/
8
th of an inch.
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