Manitowoc 2250 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-92
Published 06-24-16, Control # 241-01
Gear Oil
Hydraulic Cranes
Use a gear oil that meets MIL-L-2105C specification or API-
GL-5 classification. Change to one of the following
viscosities when the corresponding temperature range will
be encountered:
• Below -23°C (-10°F)—75W-90
• Above -23°C to 38°C (-10°F to 100°F)—80W-90
• Above 38°C (100°F)—85W-140
Hydraulic Oil
General
Optional thermostatically controlled heaters (120 V or 240 V)
can be installed in the hydraulic tank to aid in cold weather
startup.
The heaters are designed to keep the oil temperature 17°C
(30°F) warmer than ambient air temperature. Each heater is
equipped with an extension cord for connection to an owner-
furnished electric power supply.
NOTE: Hydraulic tank heaters must be unplugged when
the engine is running to prevent the hydraulic
system from overheating.
Change the oil in the hydraulic system to ISO Grade 15 when
the expected ambient temperature will remain at 0°C (32°F)
or below.
Change the oil in the hydraulic system to ISO Grade 46 when
the expected ambient temperature will remain above 0°C
(32°F).
Air System
Install the optional air dryer available from Manitowoc
Cranes.
Frequently inspect the moisture ejector at the air tanks for
proper operation. The moisture ejector has a heater that
prevents water from freezing in the ejector when the engine
is running.
Manually drain any moisture from the air tanks after the
engine is stopped before an idle period.
CIRCUIT BREAKERS
See Section 3 in the Service Manual for identification and
location of the circuit breakers used to protect the crane’s
electric circuits.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English