12 INSTALLATION INSTRUCTIONS PUBLICATION DATE Nov 05 516828
7. HOW TO INSTALL A WASHER
First check if the concrete pad and/or riser conforms to the requirements.
7.1. MFR WASHERS OR RISER INSTALLATION ON A CONCRETE PAD.
The washer or riser is positioned on the pad over the bolts and spaced above the pad approximately 3/8 inch
to ½ inch using wooden “door-stop” wedges. The machine always needs to be installed level or very
slightly tipped, with front higher (not more then 1/8” - 3.5 mm front to back), and resting on the wedges.
Completely fill the space between the machine base frame or Riser and the pad with machinery grout under
all frame surfaces. Most machinery grout will begin to set in about 20 minutes to ½ hour. When the grout is
hardened to the touch, remove the wedges and fill in the gaps with additional grout. Be sure to leave a gap
under the middle frame member and an opening in the perimeter grout for water to drain out in case of a
leak. At this point “snug “ the washer, lock-washer and nut on each of the anchoring bolts to make sure the
washer or riser is level or very slightly tipped, with front higher, (do not over-tighten the nuts at this time).
Allow at least two hours (over night is preferred) before final tightening of the hold down nuts.
7.2. MFR WASHER INSTALLATION ON A STEEL BASE (RISER)
If the base profile is such that the bolt surfaces are tapered, we recommend the use of special tapered
washers against the base to avoid bending stress on the hold-down bolts. The steel base should be
supported by machinery grout between the base and the floor. (see installation procedure above).
When the base is installed (level or very slightly tipped with front higher) and the grout is cured, the washer
can then be positioned on the base and bolted in place. Use Bolt-Nut accordingly in the table given with
quality 8.8 for the bolt and 8 for the nut minimum. You will find a number of metal shims provided in the
installation accessories package found in the washer tub. With the washer sitting firmly (bolts not tightened)
on the base there may still be some slight “rock” in the washer. Use the shims to eliminate any movement
BEFORE the hold-down bolts are tightened. Simply pulling any rock out of a washer frame using the hold-
down bolts will stress the frame and could lead to premature bearing and or frame failures.
7.3. SECURELY FASTEN THE WASHER
Securely fasten the washer (and Riser) to the mounting base or foundation with washers and double nuts to
assure safety. RETIGHTEN these nuts AFTER THE WASHER HAS BEEN OPERATEING for a few days.
Recheck at six month intervals.
DO NOT FORGET to release the counter nut before checking otherwise it is not possible to verify the right
tightness of the washer (and riser).
DO NOT FORGET to Retighten the counter nut after the check.
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