Specifications

1-5
JOHNSON CONTROLS
FORM 102.20-N1 (1109)
1
Long-Term Storage
Long-term storage is considered any period beyond
six (6) months from date of shipment. If long-term
storage is anticipated, contact the Johnson Controls
Sales representative for the proper instructions and
requirements for long-term storage. It is mandatory
that a detailed record be maintained during this long-
term period, such as, but not limited to: proper sealing
of the cabinet, rotation of the blowers and bearings,
and protection of all motors from moisture. Refer to
Form 50.20-NM3 “Long Term Storage Requirement -
Field Preparation” and Form 50.20-CL3 “Long Term
Storage Periodic Checklist and Logs”, copies of which
is included in this section.
Preventive Maintenance Prior to Long Term
Storage
The following precautions should be taken prior to
extended storage:
• Fan and motor bearings are to be greased per the
manufacturer’s specications.
• Motors and sheaves must be protected from
free moisture or high humidity. This may be
accomplished by 1) spraying components with
an anti-rust solution (P/N 026-37707-000) or 2)
disconnecting the belts and wrapping the sheaves
and motor and sealing them with plastic. Insert a
desiccant to absorb moisture that may penetrate
the plastic protection.
• The fan motor windings should be megged at
this time and recorded for comparison prior to
placing in service.
• If the fan housing was supplied with a drain con-
nection, this plug should be removed to prevent
moisture from accumulating in this portion of the
fan during storage.
Long-term storage is considered to be
any period beyond six (6) months from
date of shipment. If long-term storage
is anticipated, contact Johnson Con-
trols Sales representative at time of
order entry for the proper instructions
and requirements for long-term stor-
age. Refer to Form 50.20-NM3.
Periodic Fan Check
On a monthly basis, the fan and motor should be
rotated several times to replenish the bearing surfaces
with fresh grease.
The fan impeller should be left at approximately 180
degrees from that of the previous month to prevent the
belts from taking a set position.
It will be the responsibility of the cus-
tomer to submit a monthly log sheet
(MS577) showing the condition of the
unit and noting any discrepancies. A
copy of the log sheet should be sent
to the Johnson Controls Ofce, attn.:
Sales Representative.
Failure to perform the long-term stor-
age requirements will void the war-
ranty.