Table of Contents
Advertisement
MODEL 220
HYDRAULIC
IMPACT HAMMER
III.
OPERATING INSTRUCTIONS
K. HOT & COLD WEATHER OPERATION (CONTINUED)
Use the following procedures in cold weather: Below freezing weather calls for
particular care so that the hammer is gradually brought up to operating temperature
before submitting it to the shock loading of full driving force.
1. Be sure that the engine water/anti-freeze ratio is in the recommended range.
2. Always warm up the engine before applying any load.
3. In very cold weather (below 20°F / -7°C) the use of a reservoir heater is
recommended. The J&M 325 Power Unit is equipped with a "heater well" to
facilitate installation of an electric heater.
4. In extremely cold, arctic, conditions (below 0°F / -18°C) it may be necessary to
use a special, Arctic type, hydraulic oil. Consult J&M or your hydraulic oil
supplier for recommendations.
5. Consult the Caterpillar engine manual for appropriate, cold weather, engine
lubricant.
6. After the engine is warmed up, set engine speed to 1500 RPM. Turn the
FORWARD/REVERSE switch to REVERSE for 5 minutes. This will circulate
warmer hydraulic oil through, and warm, the Hydraulic Actuator.
7. With the engine running at 1500 RPM, operate the hammer in the short stroke
mode for approximately 3 minutes
8. The hammer may now be operated in the long stroke mode at 1500 engine
RPM.
9. DO NOT operate the engine above 1500 RPM until the hydraulic oil
temperature reaches 60°F (16°C)
10. In extreme cold climates, where 24 hour / day engine running is appropriate,
contact I C E for special "Arctic Circuit" information.
III-8
Advertisement
Table of Contents
